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

/*
 * zfcp device driver
 *
 * sysfs attributes.
 *
 * Copyright IBM Corporation 2008
 */

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

#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 = dev_get_drvdata(dev);			       \
									       \
	return sprintf(buf, _format, _value);				       \
}									       \
static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO,				       \
		     zfcp_sysfs_##_feat##_##_name##_show, NULL);

ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n",
		 atomic_read(&adapter->status));
ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n",
		 (unsigned long long) adapter->peer_wwnn);
ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n",
		 (unsigned long long) adapter->peer_wwpn);
ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n",
		 adapter->peer_d_id);
ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n",
		 adapter->hydra_version);
ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, lic_version, "0x%08x\n",
		 adapter->fsf_lic_version);
ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, hardware_version, "0x%08x\n",
		 adapter->hardware_version);
ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, 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 = dev_get_drvdata(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 = dev_get_drvdata(dev);			       \
	unsigned long val;						       \
	int retval = 0;							       \
									       \
	down(&zfcp_data.config_sema);					       \
	if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_REMOVE) {	       \
		retval = -EBUSY;					       \
		goto out;						       \
	}								       \
									       \
	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:									       \
	up(&zfcp_data.config_sema);					       \
	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_adapter, adapter, adapter, 44, 93);
ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, 45, 96);
ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, 46, 97);

static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
					    struct device_attribute *attr,
					    const char *buf, size_t count)
{
	struct zfcp_adapter *adapter = dev_get_drvdata(dev);
	int ret;

	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE)
		return -EBUSY;

	ret = zfcp_scan_ports(adapter);
	return ret ? ret : (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 zfcp_adapter *adapter = dev_get_drvdata(dev);
	struct zfcp_port *port;
	u64 wwpn;
	int retval = 0;
	LIST_HEAD(port_remove_lh);

	down(&zfcp_data.config_sema);
	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) {
		retval = -EBUSY;
		goto out;
	}

	if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) {
		retval = -EINVAL;
		goto out;
	}

	write_lock_irq(&zfcp_data.config_lock);
	port = zfcp_get_port_by_wwpn(adapter, wwpn);
	if (port && (atomic_read(&port->refcount) == 0)) {
		zfcp_port_get(port);
		atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
		list_move(&port->list, &port_remove_lh);
	} else
		port = NULL;
	write_unlock_irq(&zfcp_data.config_lock);

	if (!port) {
		retval = -ENXIO;
		goto out;
	}

	zfcp_erp_port_shutdown(port, 0, 92, NULL);
	zfcp_erp_wait(adapter);
	zfcp_port_put(port);
	zfcp_port_dequeue(port);
 out:
	up(&zfcp_data.config_sema);
	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 = dev_get_drvdata(dev);
	struct zfcp_unit *unit;
	u64 fcp_lun;
	int retval = -EINVAL;

	down(&zfcp_data.config_sema);
	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
		retval = -EBUSY;
		goto out;
	}

	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;

	retval = 0;

	zfcp_erp_unit_reopen(unit, 0, 94, NULL);
	zfcp_erp_wait(unit->port->adapter);
	zfcp_unit_put(unit);
out:
	up(&zfcp_data.config_sema);
	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 = dev_get_drvdata(dev);
	struct zfcp_unit *unit;
	u64 fcp_lun;
	int retval = 0;
	LIST_HEAD(unit_remove_lh);

	down(&zfcp_data.config_sema);
	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
		retval = -EBUSY;
		goto out;
	}

	if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) {
		retval = -EINVAL;
		goto out;
	}

	write_lock_irq(&zfcp_data.config_lock);
	unit = zfcp_get_unit_by_lun(port, fcp_lun);
	if (unit && (atomic_read(&unit->refcount) == 0)) {
		zfcp_unit_get(unit);
		atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
		list_move(&unit->list, &unit_remove_lh);
	} else
		unit = NULL;

	write_unlock_irq(&zfcp_data.config_lock);

	if (!unit) {
		retval = -ENXIO;
		goto out;
	}

	zfcp_erp_unit_shutdown(unit, 0, 95, NULL);
	zfcp_erp_wait(unit->port->adapter);
	zfcp_unit_put(unit);
	zfcp_unit_dequeue(unit);
out:
	up(&zfcp_data.config_sema);
	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 flags;						\
	unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc;	\
									\
	spin_lock_irqsave(&lat->lock, flags);				\
	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_irqrestore(&lat->lock, flags);			\
									\
	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, 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, 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_adapter *adapter =
		(struct zfcp_adapter *) scsi_host->hostdata[0];

	return sprintf(buf, "%d\n", atomic_read(&adapter->qdio_outb_full));
}
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	*
	6	* Copyright IBM Corporation 2008
	7	*/
	8
ecf39d42 CS	9	#define KMSG_COMPONENT "zfcp"
	10	#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
	11
60221920 SS	12	#include "zfcp_ext.h"
	13
	14	#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
	15	struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
	16	_show, _store)
	17	#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
	18	static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
	19	struct device_attribute *at,\
	20	char *buf) \
	21	{ \
	22	struct _feat_def *_feat = dev_get_drvdata(dev); \
	23	\
	24	return sprintf(buf, _format, _value); \
	25	} \
	26	static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
	27	zfcp_sysfs_##_feat##_##_name##_show, NULL);
	28
	29	ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, status, "0x%08x\n",
	30	atomic_read(&adapter->status));
	31	ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwnn, "0x%016llx\n",
7ba58c9c	32	(unsigned long long) adapter->peer_wwnn);
60221920	33	ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n",
7ba58c9c	34	(unsigned long long) adapter->peer_wwpn);
60221920 SS	35	ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_d_id, "0x%06x\n",
	36	adapter->peer_d_id);
	37	ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, card_version, "0x%04x\n",
	38	adapter->hydra_version);
	39	ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, lic_version, "0x%08x\n",
	40	adapter->fsf_lic_version);
	41	ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, hardware_version, "0x%08x\n",
	42	adapter->hardware_version);
	43	ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, in_recovery, "%d\n",
	44	(atomic_read(&adapter->status) &
	45	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
	46
	47	ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
	48	atomic_read(&port->status));
	49	ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
	50	(atomic_read(&port->status) &
	51	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
	52	ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
	53	(atomic_read(&port->status) &
	54	ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
	55
	56	ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
	57	atomic_read(&unit->status));
	58	ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
	59	(atomic_read(&unit->status) &
	60	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
	61	ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
	62	(atomic_read(&unit->status) &
	63	ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
	64	ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
	65	(atomic_read(&unit->status) &
	66	ZFCP_STATUS_UNIT_SHARED) != 0);
	67	ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
	68	(atomic_read(&unit->status) &
	69	ZFCP_STATUS_UNIT_READONLY) != 0);
	70
	71	#define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id) \
	72	static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev, \
	73	struct device_attribute *attr, \
	74	char *buf) \
	75	{ \
	76	struct _feat_def *_feat = dev_get_drvdata(dev); \
	77	\
	78	if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED) \
	79	return sprintf(buf, "1\n"); \
	80	else \
	81	return sprintf(buf, "0\n"); \
	82	} \
	83	static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \
	84	struct device_attribute *attr,\
	85	const char *buf, size_t count)\
	86	{ \
	87	struct _feat_def *_feat = dev_get_drvdata(dev); \
	88	unsigned long val; \
	89	int retval = 0; \
	90	\
	91	down(&zfcp_data.config_sema); \
	92	if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_REMOVE) { \
	93	retval = -EBUSY; \
	94	goto out; \
	95	} \
	96	\
	97	if (strict_strtoul(buf, 0, &val) \|\| val != 0) { \
	98	retval = -EINVAL; \
99	goto out; \
100	} \
101	\
102	zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL, \
103	ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\
104	zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED, \
105	_reopen_id, NULL); \
106	zfcp_erp_wait(_adapter); \
107	out: \
108	up(&zfcp_data.config_sema); \
109	return retval ? retval : (ssize_t) count; \
110	} \
111	static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR \| S_IRUGO, \
112	zfcp_sysfs_##_feat##_failed_show, \
113	zfcp_sysfs_##_feat##_failed_store);
114
115	ZFCP_SYSFS_FAILED(zfcp_adapter, adapter, adapter, 44, 93);
116	ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, 45, 96);
117	ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, 46, 97);
118
119	static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
120	struct device_attribute *attr,
121	const char *buf, size_t count)
122	{
123	struct zfcp_adapter *adapter = dev_get_drvdata(dev);
124	int ret;
125
126	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE)
127	return -EBUSY;
128
129	ret = zfcp_scan_ports(adapter);
130	return ret ? ret : (ssize_t) count;
131	}
132	static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
133	zfcp_sysfs_port_rescan_store);
134
135	static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
136	struct device_attribute *attr,
137	const char *buf, size_t count)
138	{
139	struct zfcp_adapter *adapter = dev_get_drvdata(dev);
140	struct zfcp_port *port;
7ba58c9c	141	u64 wwpn;
60221920	142	int retval = 0;
0406289e	143	LIST_HEAD(port_remove_lh);
60221920 SS	144
	145	down(&zfcp_data.config_sema);
	146	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) {
	147	retval = -EBUSY;
	148	goto out;
	149	}
	150
7ba58c9c	151	if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn)) {
60221920 SS	152	retval = -EINVAL;
	153	goto out;
	154	}
	155
	156	write_lock_irq(&zfcp_data.config_lock);
	157	port = zfcp_get_port_by_wwpn(adapter, wwpn);
	158	if (port && (atomic_read(&port->refcount) == 0)) {
	159	zfcp_port_get(port);
	160	atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status);
0406289e	161	list_move(&port->list, &port_remove_lh);
60221920 SS	162	} else
	163	port = NULL;
	164	write_unlock_irq(&zfcp_data.config_lock);
	165
	166	if (!port) {
	167	retval = -ENXIO;
	168	goto out;
	169	}
	170
	171	zfcp_erp_port_shutdown(port, 0, 92, NULL);
	172	zfcp_erp_wait(adapter);
	173	zfcp_port_put(port);
	174	zfcp_port_dequeue(port);
	175	out:
	176	up(&zfcp_data.config_sema);
	177	return retval ? retval : (ssize_t) count;
	178	}
	179	static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
	180	zfcp_sysfs_port_remove_store);
	181
	182	static struct attribute *zfcp_adapter_attrs[] = {
	183	&dev_attr_adapter_failed.attr,
	184	&dev_attr_adapter_in_recovery.attr,
	185	&dev_attr_adapter_port_remove.attr,
	186	&dev_attr_adapter_port_rescan.attr,
	187	&dev_attr_adapter_peer_wwnn.attr,
	188	&dev_attr_adapter_peer_wwpn.attr,
	189	&dev_attr_adapter_peer_d_id.attr,
	190	&dev_attr_adapter_card_version.attr,
	191	&dev_attr_adapter_lic_version.attr,
	192	&dev_attr_adapter_status.attr,
	193	&dev_attr_adapter_hardware_version.attr,
	194	NULL
	195	};
	196
	197	struct attribute_group zfcp_sysfs_adapter_attrs = {
	198	.attrs = zfcp_adapter_attrs,
	199	};
	200
	201	static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
	202	struct device_attribute *attr,
	203	const char *buf, size_t count)
	204	{
	205	struct zfcp_port *port = dev_get_drvdata(dev);
	206	struct zfcp_unit *unit;
7ba58c9c	207	u64 fcp_lun;
60221920 SS	208	int retval = -EINVAL;
	209
	210	down(&zfcp_data.config_sema);
	211	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
	212	retval = -EBUSY;
	213	goto out;
	214	}
	215
7ba58c9c	216	if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
60221920 SS	217	goto out;
	218
	219	unit = zfcp_unit_enqueue(port, fcp_lun);
	220	if (IS_ERR(unit))
	221	goto out;
	222
	223	retval = 0;
	224
	225	zfcp_erp_unit_reopen(unit, 0, 94, NULL);
	226	zfcp_erp_wait(unit->port->adapter);
	227	zfcp_unit_put(unit);
	228	out:
	229	up(&zfcp_data.config_sema);
	230	return retval ? retval : (ssize_t) count;
	231	}
	232	static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
	233
	234	static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
	235	struct device_attribute *attr,
	236	const char *buf, size_t count)
	237	{
	238	struct zfcp_port *port = dev_get_drvdata(dev);
	239	struct zfcp_unit *unit;
7ba58c9c	240	u64 fcp_lun;
60221920	241	int retval = 0;
0406289e	242	LIST_HEAD(unit_remove_lh);
60221920 SS	243
	244	down(&zfcp_data.config_sema);
	245	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
	246	retval = -EBUSY;
	247	goto out;
	248	}
	249
7ba58c9c	250	if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun)) {
60221920 SS	251	retval = -EINVAL;
	252	goto out;
	253	}
	254
	255	write_lock_irq(&zfcp_data.config_lock);
	256	unit = zfcp_get_unit_by_lun(port, fcp_lun);
	257	if (unit && (atomic_read(&unit->refcount) == 0)) {
	258	zfcp_unit_get(unit);
	259	atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status);
0406289e	260	list_move(&unit->list, &unit_remove_lh);
60221920 SS	261	} else
	262	unit = NULL;
	263
	264	write_unlock_irq(&zfcp_data.config_lock);
	265
	266	if (!unit) {
	267	retval = -ENXIO;
	268	goto out;
	269	}
	270
	271	zfcp_erp_unit_shutdown(unit, 0, 95, NULL);
	272	zfcp_erp_wait(unit->port->adapter);
	273	zfcp_unit_put(unit);
	274	zfcp_unit_dequeue(unit);
	275	out:
	276	up(&zfcp_data.config_sema);
	277	return retval ? retval : (ssize_t) count;
	278	}
	279	static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
	280
5ab944f9	281	static struct attribute *zfcp_port_attrs[] = {
60221920 SS	282	&dev_attr_unit_add.attr,
	283	&dev_attr_unit_remove.attr,
	284	&dev_attr_port_failed.attr,
	285	&dev_attr_port_in_recovery.attr,
	286	&dev_attr_port_status.attr,
	287	&dev_attr_port_access_denied.attr,
	288	NULL
	289	};
	290
	291	/**
	292	* zfcp_sysfs_port_attrs - sysfs attributes for all other ports
	293	*/
	294	struct attribute_group zfcp_sysfs_port_attrs = {
5ab944f9	295	.attrs = zfcp_port_attrs,
60221920 SS	296	};
	297
	298	static struct attribute *zfcp_unit_attrs[] = {
	299	&dev_attr_unit_failed.attr,
	300	&dev_attr_unit_in_recovery.attr,
	301	&dev_attr_unit_status.attr,
	302	&dev_attr_unit_access_denied.attr,
	303	&dev_attr_unit_access_shared.attr,
	304	&dev_attr_unit_access_readonly.attr,
	305	NULL
	306	};
	307
	308	struct attribute_group zfcp_sysfs_unit_attrs = {
	309	.attrs = zfcp_unit_attrs,
	310	};
	311
	312	#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
	313	static ssize_t \
	314	zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
	315	struct device_attribute *attr, \
	316	char *buf) { \
	317	struct scsi_device *sdev = to_scsi_device(dev); \
	318	struct zfcp_unit *unit = sdev->hostdata; \
	319	struct zfcp_latencies *lat = &unit->latencies; \
	320	struct zfcp_adapter *adapter = unit->port->adapter; \
	321	unsigned long flags; \
	322	unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
	323	\
	324	spin_lock_irqsave(&lat->lock, flags); \
	325	fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
	326	fmin = lat->_name.fabric.min * adapter->timer_ticks; \
	327	fmax = lat->_name.fabric.max * adapter->timer_ticks; \
	328	csum = lat->_name.channel.sum * adapter->timer_ticks; \
	329	cmin = lat->_name.channel.min * adapter->timer_ticks; \
	330	cmax = lat->_name.channel.max * adapter->timer_ticks; \
	331	cc = lat->_name.counter; \
	332	spin_unlock_irqrestore(&lat->lock, flags); \
	333	\
	334	do_div(fsum, 1000); \
	335	do_div(fmin, 1000); \
	336	do_div(fmax, 1000); \
	337	do_div(csum, 1000); \
	338	do_div(cmin, 1000); \
	339	do_div(cmax, 1000); \
	340	\
	341	return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
	342	fmin, fmax, fsum, cmin, cmax, csum, cc); \
	343	} \
	344	static ssize_t \
	345	zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
	346	struct device_attribute *attr, \
	347	const char *buf, size_t count) \
	348	{ \
	349	struct scsi_device *sdev = to_scsi_device(dev); \
	350	struct zfcp_unit *unit = sdev->hostdata; \
	351	struct zfcp_latencies *lat = &unit->latencies; \
	352	unsigned long flags; \
	353	\
	354	spin_lock_irqsave(&lat->lock, flags); \
	355	lat->_name.fabric.sum = 0; \
	356	lat->_name.fabric.min = 0xFFFFFFFF; \
	357	lat->_name.fabric.max = 0; \
	358	lat->_name.channel.sum = 0; \
	359	lat->_name.channel.min = 0xFFFFFFFF; \
360	lat->_name.channel.max = 0; \
361	lat->_name.counter = 0; \
362	spin_unlock_irqrestore(&lat->lock, flags); \
363	\
364	return (ssize_t) count; \
365	} \
366	static DEVICE_ATTR(_name##_latency, S_IWUSR \| S_IRUGO, \
367	zfcp_sysfs_unit_##_name##_latency_show, \
368	zfcp_sysfs_unit_##_name##_latency_store);
369
370	ZFCP_DEFINE_LATENCY_ATTR(read);
371	ZFCP_DEFINE_LATENCY_ATTR(write);
372	ZFCP_DEFINE_LATENCY_ATTR(cmd);
373
374	#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
375	static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
376	struct device_attribute *attr,\
377	char *buf) \
378	{ \
379	struct scsi_device *sdev = to_scsi_device(dev); \
380	struct zfcp_unit *unit = sdev->hostdata; \
381	\
382	return sprintf(buf, _format, _value); \
383	} \
384	static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
385
386	ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
b9d3aed7	387	dev_name(&unit->port->adapter->ccw_device->dev));
7ba58c9c SS	388	ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
	389	(unsigned long long) unit->port->wwpn);
	390	ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n",
	391	(unsigned long long) unit->fcp_lun);
60221920 SS	392
	393	struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
	394	&dev_attr_fcp_lun,
	395	&dev_attr_wwpn,
	396	&dev_attr_hba_id,
	397	&dev_attr_read_latency,
	398	&dev_attr_write_latency,
	399	&dev_attr_cmd_latency,
	400	NULL
	401	};
	402
	403	static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
	404	struct device_attribute *attr,
	405	char *buf)
	406	{
	407	struct Scsi_Host *scsi_host = dev_to_shost(dev);
	408	struct fsf_qtcb_bottom_port *qtcb_port;
	409	struct zfcp_adapter *adapter;
	410	int retval;
	411
	412	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
	413	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
	414	return -EOPNOTSUPP;
	415
	416	qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
	417	if (!qtcb_port)
	418	return -ENOMEM;
	419
	420	retval = zfcp_fsf_exchange_port_data_sync(adapter, qtcb_port);
	421	if (!retval)
	422	retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
	423	qtcb_port->cb_util, qtcb_port->a_util);
	424	kfree(qtcb_port);
	425	return retval;
	426	}
	427	static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
	428
	429	static int zfcp_sysfs_adapter_ex_config(struct device *dev,
	430	struct fsf_statistics_info *stat_inf)
	431	{
	432	struct Scsi_Host *scsi_host = dev_to_shost(dev);
	433	struct fsf_qtcb_bottom_config *qtcb_config;
	434	struct zfcp_adapter *adapter;
	435	int retval;
	436
	437	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
	438	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
	439	return -EOPNOTSUPP;
	440
	441	qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
	442	GFP_KERNEL);
	443	if (!qtcb_config)
	444	return -ENOMEM;
	445
	446	retval = zfcp_fsf_exchange_config_data_sync(adapter, qtcb_config);
	447	if (!retval)
	448	*stat_inf = qtcb_config->stat_info;
	449
	450	kfree(qtcb_config);
	451	return retval;
	452	}
	453
	454	#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
	455	static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
456	struct device_attribute *attr,\
457	char *buf) \
458	{ \
459	struct fsf_statistics_info stat_info; \
460	int retval; \
461	\
462	retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
463	if (retval) \
464	return retval; \
465	\
466	return sprintf(buf, _format, ## _arg); \
467	} \
468	static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
469
470	ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
471	(unsigned long long) stat_info.input_req,
472	(unsigned long long) stat_info.output_req,
473	(unsigned long long) stat_info.control_req);
474
475	ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
476	(unsigned long long) stat_info.input_mb,
477	(unsigned long long) stat_info.output_mb);
478
479	ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
480	(unsigned long long) stat_info.seconds_act);
481
2450d3e7 SR	482	static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
	483	struct device_attribute *attr,
	484	char *buf)
	485	{
	486	struct Scsi_Host *scsi_host = class_to_shost(dev);
	487	struct zfcp_adapter *adapter =
	488	(struct zfcp_adapter *) scsi_host->hostdata[0];
	489
	490	return sprintf(buf, "%d\n", atomic_read(&adapter->qdio_outb_full));
	491	}
	492	static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
	493
60221920 SS	494	struct device_attribute *zfcp_sysfs_shost_attrs[] = {
	495	&dev_attr_utilization,
	496	&dev_attr_requests,
	497	&dev_attr_megabytes,
	498	&dev_attr_seconds_active,
2450d3e7	499	&dev_attr_queue_full,
60221920 SS	500	NULL
60221920 SS	501	};