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[SCSI] zfcp: consolidate sysfs things into one file.

Browse source 
zfcp was using three files to deal with sysfs representation
for adapters, ports and units. The consolidation into one file
prevents code-duplication and eases maintainability.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Swen Schillig 2008-07-02 10:56:38 +02:00 committed by James Bottomley
parent 317e6b6519
commit 6022192070
9 changed files with 539 additions and 893 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/s390/scsi/Makefile
View file

@ -3,7 +3,6 @@
#
zfcp-objs := zfcp_aux.o zfcp_ccw.o zfcp_scsi.o zfcp_erp.o zfcp_qdio.o \
zfcp_fsf.o zfcp_dbf.o zfcp_sysfs_adapter.o zfcp_sysfs_port.o \
zfcp_sysfs_unit.o zfcp_fc.o zfcp_cfdc.o
zfcp_fsf.o zfcp_dbf.o zfcp_sysfs.o zfcp_fc.o zfcp_cfdc.o
obj-$(CONFIG_ZFCP) += zfcp.o

42
drivers/s390/scsi/zfcp_aux.c
View file

@ -262,6 +262,11 @@ struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *adapter,
return NULL;
}
static void zfcp_sysfs_unit_release(struct device *dev)
{
kfree(container_of(dev, struct zfcp_unit, sysfs_device));
}
/**
* zfcp_unit_enqueue - enqueue unit to unit list of a port.
* @port: pointer to port where unit is added
@ -311,7 +316,8 @@ struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *port, fcp_lun_t fcp_lun)
if (device_register(&unit->sysfs_device))
goto err_out_free;
if (zfcp_sysfs_unit_create_files(&unit->sysfs_device)) {
if (sysfs_create_group(&unit->sysfs_device.kobj,
&zfcp_sysfs_unit_attrs)) {
device_unregister(&unit->sysfs_device);
return ERR_PTR(-EIO);
}
@ -351,7 +357,7 @@ void zfcp_unit_dequeue(struct zfcp_unit *unit)
write_unlock_irq(&zfcp_data.config_lock);
unit->port->units--;
zfcp_port_put(unit->port);
zfcp_sysfs_unit_remove_files(&unit->sysfs_device);
sysfs_remove_group(&unit->sysfs_device.kobj, &zfcp_sysfs_unit_attrs);
device_unregister(&unit->sysfs_device);
}
@ -527,7 +533,8 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
dev_set_drvdata(&ccw_device->dev, adapter);
if (zfcp_sysfs_adapter_create_files(&ccw_device->dev))
if (sysfs_create_group(&ccw_device->dev.kobj,
&zfcp_sysfs_adapter_attrs))
goto sysfs_failed;
adapter->generic_services.parent = &adapter->ccw_device->dev;
@ -550,7 +557,8 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
return 0;
generic_services_failed:
zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
sysfs_remove_group(&ccw_device->dev.kobj,
&zfcp_sysfs_adapter_attrs);
sysfs_failed:
zfcp_adapter_debug_unregister(adapter);
debug_register_failed:
@ -578,7 +586,8 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
cancel_work_sync(&adapter->stat_work);
zfcp_adapter_scsi_unregister(adapter);
device_unregister(&adapter->generic_services);
zfcp_sysfs_adapter_remove_files(&adapter->ccw_device->dev);
sysfs_remove_group(&adapter->ccw_device->dev.kobj,
&zfcp_sysfs_adapter_attrs);
dev_set_drvdata(&adapter->ccw_device->dev, NULL);
/* sanity check: no pending FSF requests */
spin_lock_irqsave(&adapter->req_list_lock, flags);
@ -606,6 +615,11 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
kfree(adapter);
}
static void zfcp_sysfs_port_release(struct device *dev)
{
kfree(container_of(dev, struct zfcp_port, sysfs_device));
}
/**
* zfcp_port_enqueue - enqueue port to port list of adapter
* @adapter: adapter where remote port is added
@ -623,6 +637,7 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn,
u32 status, u32 d_id)
{
struct zfcp_port *port;
int retval;
char *bus_id;
port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL);
@ -685,7 +700,14 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, wwn_t wwpn,
if (device_register(&port->sysfs_device))
goto err_out_free;
if (zfcp_sysfs_port_create_files(&port->sysfs_device, status)) {
if (status & ZFCP_STATUS_PORT_WKA)
retval = sysfs_create_group(&port->sysfs_device.kobj,
&zfcp_sysfs_ns_port_attrs);
else
retval = sysfs_create_group(&port->sysfs_device.kobj,
&zfcp_sysfs_port_attrs);
if (retval) {
device_unregister(&port->sysfs_device);
goto err_out;
}
@ -727,8 +749,12 @@ void zfcp_port_dequeue(struct zfcp_port *port)
fc_remote_port_delete(port->rport);
port->rport = NULL;
zfcp_adapter_put(port->adapter);
zfcp_sysfs_port_remove_files(&port->sysfs_device,
atomic_read(&port->status));
if (atomic_read(&port->status) & ZFCP_STATUS_PORT_WKA)
sysfs_remove_group(&port->sysfs_device.kobj,
&zfcp_sysfs_ns_port_attrs);
else
sysfs_remove_group(&port->sysfs_device.kobj,
&zfcp_sysfs_port_attrs);
device_unregister(&port->sysfs_device);
}

9
drivers/s390/scsi/zfcp_def.h
View file

@ -627,11 +627,6 @@ struct zfcp_adapter {
struct work_struct scan_work;
};
/*
* the struct device sysfs_device must be at the beginning of this structure.
* pointer to struct device is used to free port structure in release function
* of the device. don't change!
*/
struct zfcp_port {
struct device sysfs_device; /* sysfs device */
struct fc_rport *rport; /* rport of fc transport class */
@ -655,10 +650,6 @@ struct zfcp_port {
u32 supported_classes;
};
/* the struct device sysfs_device must be at the beginning of this structure.
* pointer to struct device is used to free unit structure in release function
* of the device. don't change!
*/
struct zfcp_unit {
struct device sysfs_device; /* sysfs device */
struct list_head list; /* list of logical units */

16
drivers/s390/scsi/zfcp_ext.h
View file

@ -13,15 +13,13 @@
extern struct zfcp_data zfcp_data;
/******************************** SYSFS *************************************/
extern int zfcp_sysfs_adapter_create_files(struct device *);
extern void zfcp_sysfs_adapter_remove_files(struct device *);
extern int zfcp_sysfs_port_create_files(struct device *, u32);
extern void zfcp_sysfs_port_remove_files(struct device *, u32);
extern int zfcp_sysfs_unit_create_files(struct device *);
extern void zfcp_sysfs_unit_remove_files(struct device *);
extern void zfcp_sysfs_port_release(struct device *);
extern void zfcp_sysfs_unit_release(struct device *);
/* zfcp_sysfs.c */
extern struct attribute_group zfcp_sysfs_unit_attrs;
extern struct attribute_group zfcp_sysfs_adapter_attrs;
extern struct attribute_group zfcp_sysfs_ns_port_attrs;
extern struct attribute_group zfcp_sysfs_port_attrs;
extern struct device_attribute *zfcp_sysfs_sdev_attrs[];
extern struct device_attribute *zfcp_sysfs_shost_attrs[];
/**************************** CONFIGURATION *********************************/
extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, fcp_lun_t);

206
drivers/s390/scsi/zfcp_scsi.c
View file

@ -520,209 +520,6 @@ struct fc_function_template zfcp_transport_functions = {
.disable_target_scan = 1,
};
#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; \
struct zfcp_unit *unit; \
\
sdev = to_scsi_device(dev); \
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",
unit->port->adapter->ccw_device->dev.bus_id);
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", unit->port->wwpn);
ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", unit->fcp_lun);
static 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 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;
}
static ssize_t zfcp_sysfs_adapter_request_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, "%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);
}
static ssize_t zfcp_sysfs_adapter_mb_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, "%llu %llu\n",
(unsigned long long) stat_info.input_mb,
(unsigned long long) stat_info.output_mb);
}
static ssize_t zfcp_sysfs_adapter_sec_active_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, "%llu\n",
(unsigned long long) stat_info.seconds_act);
}
static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
static DEVICE_ATTR(requests, S_IRUGO, zfcp_sysfs_adapter_request_show, NULL);
static DEVICE_ATTR(megabytes, S_IRUGO, zfcp_sysfs_adapter_mb_show, NULL);
static DEVICE_ATTR(seconds_active, S_IRUGO,
zfcp_sysfs_adapter_sec_active_show, NULL);
static struct device_attribute *zfcp_a_stats_attrs[] = {
&dev_attr_utilization,
&dev_attr_requests,
&dev_attr_megabytes,
&dev_attr_seconds_active,
NULL
};
struct zfcp_data zfcp_data = {
.scsi_host_template = {
.name = "zfcp",
@ -743,7 +540,6 @@ struct zfcp_data zfcp_data = {
.use_clustering = 1,
.sdev_attrs = zfcp_sysfs_sdev_attrs,
.max_sectors = (ZFCP_MAX_SBALES_PER_REQ * 8),
.shost_attrs = zfcp_a_stats_attrs,
.shost_attrs = zfcp_sysfs_shost_attrs,
},
};

496
drivers/s390/scsi/zfcp_sysfs.c Normal file
View file

@ -0,0 +1,496 @@
/*
* zfcp device driver
*
* sysfs attributes.
*
* Copyright IBM Corporation 2008
*/
#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",
adapter->peer_wwnn);
ZFCP_DEFINE_ATTR(zfcp_adapter, adapter, peer_wwpn, "0x%016llx\n",
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;
wwn_t wwpn;
int retval = 0;
down(&zfcp_data.config_sema);
if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_REMOVE) {
retval = -EBUSY;
goto out;
}
if (strict_strtoull(buf, 0, &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, &adapter->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;
fcp_lun_t 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, &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;
fcp_lun_t fcp_lun;
int retval = 0;
down(&zfcp_data.config_sema);
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE) {
retval = -EBUSY;
goto out;
}
if (strict_strtoull(buf, 0, &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, &port->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_ns_attrs[] = {
&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_ns_port_attrs - sysfs attributes for nameserver
*/
struct attribute_group zfcp_sysfs_ns_port_attrs = {
.attrs = zfcp_port_ns_attrs,
};
static struct attribute *zfcp_port_no_ns_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_no_ns_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",
unit->port->adapter->ccw_device->dev.bus_id);
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n", unit->port->wwpn);
ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n", 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);
struct device_attribute *zfcp_sysfs_shost_attrs[] = {
&dev_attr_utilization,
&dev_attr_requests,
&dev_attr_megabytes,
&dev_attr_seconds_active,
NULL
};

232
drivers/s390/scsi/zfcp_sysfs_adapter.c
View file

@ -1,232 +0,0 @@
/*
* zfcp device driver
*
* sysfs attributes for CCW device.
*
* Copyright IBM Corporation 2002, 2008
*/
#include "zfcp_ext.h"
/**
* ZFCP_DEFINE_ADAPTER_ATTR
* @_name: name of show attribute
* @_format: format string
* @_value: value to print
*
* Generates attributes for an adapter.
*/
#define ZFCP_DEFINE_ADAPTER_ATTR(_name, _format, _value) \
static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct zfcp_adapter *adapter; \
\
adapter = dev_get_drvdata(dev); \
return sprintf(buf, _format, _value); \
} \
\
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
ZFCP_DEFINE_ADAPTER_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
ZFCP_DEFINE_ADAPTER_ATTR(peer_wwnn, "0x%016llx\n", adapter->peer_wwnn);
ZFCP_DEFINE_ADAPTER_ATTR(peer_wwpn, "0x%016llx\n", adapter->peer_wwpn);
ZFCP_DEFINE_ADAPTER_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
ZFCP_DEFINE_ADAPTER_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
ZFCP_DEFINE_ADAPTER_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
ZFCP_DEFINE_ADAPTER_ATTR(hardware_version, "0x%08x\n",
adapter->hardware_version);
ZFCP_DEFINE_ADAPTER_ATTR(in_recovery, "%d\n", atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status));
/**
* zfcp_sysfs_port_rescan - trigger manual port rescan
* @dev: pointer to belonging device
* @attr: pointer to struct device_attribute
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*/
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;
int ret;
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status))
return -EBUSY;
ret = zfcp_scan_ports(adapter);
return ret ? ret : (ssize_t) count;
}
static DEVICE_ATTR(port_rescan, S_IWUSR, NULL, zfcp_sysfs_port_rescan_store);
/**
* zfcp_sysfs_port_remove_store - remove a port from sysfs tree
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*
* Store function of the "port_remove" attribute of an adapter.
*/
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;
struct zfcp_port *port;
wwn_t wwpn;
char *endp;
int retval = 0;
down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
retval = -EBUSY;
goto out;
}
wwpn = simple_strtoull(buf, &endp, 0);
if ((endp + 1) < (buf + count)) {
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, &adapter->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 DEVICE_ATTR(port_remove, S_IWUSR, NULL, zfcp_sysfs_port_remove_store);
/**
* zfcp_sysfs_adapter_failed_store - failed state of adapter
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*
* Store function of the "failed" attribute of an adapter.
* If a "0" gets written to "failed", error recovery will be
* started for the belonging adapter.
*/
static ssize_t
zfcp_sysfs_adapter_failed_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_adapter *adapter;
unsigned int val;
char *endp;
int retval = 0;
down(&zfcp_data.config_sema);
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status)) {
retval = -EBUSY;
goto out;
}
val = simple_strtoul(buf, &endp, 0);
if (((endp + 1) < (buf + count)) || (val != 0)) {
retval = -EINVAL;
goto out;
}
zfcp_erp_modify_adapter_status(adapter, 44, NULL,
ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED, 93,
NULL);
zfcp_erp_wait(adapter);
out:
up(&zfcp_data.config_sema);
return retval ? retval : (ssize_t) count;
}
/**
* zfcp_sysfs_adapter_failed_show - failed state of adapter
* @dev: pointer to belonging device
* @buf: pointer to input buffer
*
* Show function of "failed" attribute of adapter. Will be
* "0" if adapter is working, otherwise "1".
*/
static ssize_t
zfcp_sysfs_adapter_failed_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct zfcp_adapter *adapter;
adapter = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &adapter->status))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_adapter_failed_show,
zfcp_sysfs_adapter_failed_store);
static struct attribute *zfcp_adapter_attrs[] = {
&dev_attr_failed.attr,
&dev_attr_in_recovery.attr,
&dev_attr_port_remove.attr,
&dev_attr_port_rescan.attr,
&dev_attr_peer_wwnn.attr,
&dev_attr_peer_wwpn.attr,
&dev_attr_peer_d_id.attr,
&dev_attr_card_version.attr,
&dev_attr_lic_version.attr,
&dev_attr_status.attr,
&dev_attr_hardware_version.attr,
NULL
};
static struct attribute_group zfcp_adapter_attr_group = {
.attrs = zfcp_adapter_attrs,
};
/**
* zfcp_sysfs_create_adapter_files - create sysfs adapter files
* @dev: pointer to belonging device
*
* Create all attributes of the sysfs representation of an adapter.
*/
int
zfcp_sysfs_adapter_create_files(struct device *dev)
{
return sysfs_create_group(&dev->kobj, &zfcp_adapter_attr_group);
}
/**
* zfcp_sysfs_remove_adapter_files - remove sysfs adapter files
* @dev: pointer to belonging device
*
* Remove all attributes of the sysfs representation of an adapter.
*/
void
zfcp_sysfs_adapter_remove_files(struct device *dev)
{
sysfs_remove_group(&dev->kobj, &zfcp_adapter_attr_group);
}

278
drivers/s390/scsi/zfcp_sysfs_port.c
View file

@ -1,278 +0,0 @@
/*
* zfcp device driver
*
* sysfs attributes for zfcp port.
*
* Copyright IBM Corporation 2002, 2008
*/
#include "zfcp_ext.h"
/**
* zfcp_sysfs_port_release - gets called when a struct device port is released
* @dev: pointer to belonging device
*/
void
zfcp_sysfs_port_release(struct device *dev)
{
kfree(dev);
}
/**
* ZFCP_DEFINE_PORT_ATTR
* @_name: name of show attribute
* @_format: format string
* @_value: value to print
*
* Generates attributes for a port.
*/
#define ZFCP_DEFINE_PORT_ATTR(_name, _format, _value) \
static ssize_t zfcp_sysfs_port_##_name##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct zfcp_port *port; \
\
port = dev_get_drvdata(dev); \
return sprintf(buf, _format, _value); \
} \
\
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_port_##_name##_show, NULL);
ZFCP_DEFINE_PORT_ATTR(status, "0x%08x\n", atomic_read(&port->status));
ZFCP_DEFINE_PORT_ATTR(in_recovery, "%d\n", atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status));
ZFCP_DEFINE_PORT_ATTR(access_denied, "%d\n", atomic_test_mask
(ZFCP_STATUS_COMMON_ACCESS_DENIED, &port->status));
/**
* zfcp_sysfs_unit_add_store - add a unit to sysfs tree
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*
* Store function of the "unit_add" attribute of a port.
*/
static ssize_t
zfcp_sysfs_unit_add_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
fcp_lun_t fcp_lun;
char *endp;
struct zfcp_port *port;
struct zfcp_unit *unit;
int retval = -EINVAL;
down(&zfcp_data.config_sema);
port = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status)) {
retval = -EBUSY;
goto out;
}
fcp_lun = simple_strtoull(buf, &endp, 0);
if ((endp + 1) < (buf + count))
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);
/**
* zfcp_sysfs_unit_remove_store - remove a unit from sysfs tree
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*/
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;
struct zfcp_unit *unit;
fcp_lun_t fcp_lun;
char *endp;
int retval = 0;
down(&zfcp_data.config_sema);
port = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status)) {
retval = -EBUSY;
goto out;
}
fcp_lun = simple_strtoull(buf, &endp, 0);
if ((endp + 1) < (buf + count)) {
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, &port->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);
/**
* zfcp_sysfs_port_failed_store - failed state of port
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*
* Store function of the "failed" attribute of a port.
* If a "0" gets written to "failed", error recovery will be
* started for the belonging port.
*/
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;
unsigned int val;
char *endp;
int retval = 0;
down(&zfcp_data.config_sema);
port = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &port->status)) {
retval = -EBUSY;
goto out;
}
val = simple_strtoul(buf, &endp, 0);
if (((endp + 1) < (buf + count)) || (val != 0)) {
retval = -EINVAL;
goto out;
}
zfcp_erp_modify_port_status(port, 45, NULL,
ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, 96, NULL);
zfcp_erp_wait(port->adapter);
out:
up(&zfcp_data.config_sema);
return retval ? retval : (ssize_t) count;
}
/**
* zfcp_sysfs_port_failed_show - failed state of port
* @dev: pointer to belonging device
* @buf: pointer to input buffer
*
* Show function of "failed" attribute of port. Will be
* "0" if port is working, otherwise "1".
*/
static ssize_t
zfcp_sysfs_port_failed_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct zfcp_port *port;
port = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &port->status))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_port_failed_show,
zfcp_sysfs_port_failed_store);
/**
* zfcp_port_common_attrs
* sysfs attributes that are common for all kind of fc ports.
*/
static struct attribute *zfcp_port_common_attrs[] = {
&dev_attr_failed.attr,
&dev_attr_in_recovery.attr,
&dev_attr_status.attr,
&dev_attr_access_denied.attr,
NULL
};
static struct attribute_group zfcp_port_common_attr_group = {
.attrs = zfcp_port_common_attrs,
};
/**
* zfcp_port_no_ns_attrs
* sysfs attributes not to be used for nameserver ports.
*/
static struct attribute *zfcp_port_no_ns_attrs[] = {
&dev_attr_unit_add.attr,
&dev_attr_unit_remove.attr,
NULL
};
static struct attribute_group zfcp_port_no_ns_attr_group = {
.attrs = zfcp_port_no_ns_attrs,
};
/**
* zfcp_sysfs_port_create_files - create sysfs port files
* @dev: pointer to belonging device
*
* Create all attributes of the sysfs representation of a port.
*/
int
zfcp_sysfs_port_create_files(struct device *dev, u32 flags)
{
int retval;
retval = sysfs_create_group(&dev->kobj, &zfcp_port_common_attr_group);
if ((flags & ZFCP_STATUS_PORT_WKA) || retval)
return retval;
retval = sysfs_create_group(&dev->kobj, &zfcp_port_no_ns_attr_group);
if (retval)
sysfs_remove_group(&dev->kobj, &zfcp_port_common_attr_group);
return retval;
}
/**
* zfcp_sysfs_port_remove_files - remove sysfs port files
* @dev: pointer to belonging device
*
* Remove all attributes of the sysfs representation of a port.
*/
void
zfcp_sysfs_port_remove_files(struct device *dev, u32 flags)
{
sysfs_remove_group(&dev->kobj, &zfcp_port_common_attr_group);
if (!(flags & ZFCP_STATUS_PORT_WKA))
sysfs_remove_group(&dev->kobj, &zfcp_port_no_ns_attr_group);
}

150
drivers/s390/scsi/zfcp_sysfs_unit.c
View file

@ -1,150 +0,0 @@
/*
* zfcp device driver
*
* sysfs interface for zfcp unit.
*
* Copyright IBM Corporation 2002, 2008
*/
#include "zfcp_ext.h"
/**
* zfcp_sysfs_unit_release - gets called when a struct device unit is released
* @dev: pointer to belonging device
*/
void
zfcp_sysfs_unit_release(struct device *dev)
{
kfree(dev);
}
/**
* ZFCP_DEFINE_UNIT_ATTR
* @_name: name of show attribute
* @_format: format string
* @_value: value to print
*
* Generates attribute for a unit.
*/
#define ZFCP_DEFINE_UNIT_ATTR(_name, _format, _value) \
static ssize_t zfcp_sysfs_unit_##_name##_show(struct device *dev, struct device_attribute *attr, \
char *buf) \
{ \
struct zfcp_unit *unit; \
\
unit = dev_get_drvdata(dev); \
return sprintf(buf, _format, _value); \
} \
\
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_unit_##_name##_show, NULL);
ZFCP_DEFINE_UNIT_ATTR(status, "0x%08x\n", atomic_read(&unit->status));
ZFCP_DEFINE_UNIT_ATTR(in_recovery, "%d\n", atomic_test_mask
(ZFCP_STATUS_COMMON_ERP_INUSE, &unit->status));
ZFCP_DEFINE_UNIT_ATTR(access_denied, "%d\n", atomic_test_mask
(ZFCP_STATUS_COMMON_ACCESS_DENIED, &unit->status));
ZFCP_DEFINE_UNIT_ATTR(access_shared, "%d\n", atomic_test_mask
(ZFCP_STATUS_UNIT_SHARED, &unit->status));
ZFCP_DEFINE_UNIT_ATTR(access_readonly, "%d\n", atomic_test_mask
(ZFCP_STATUS_UNIT_READONLY, &unit->status));
/**
* zfcp_sysfs_unit_failed_store - failed state of unit
* @dev: pointer to belonging device
* @buf: pointer to input buffer
* @count: number of bytes in buffer
*
* Store function of the "failed" attribute of a unit.
* If a "0" gets written to "failed", error recovery will be
* started for the belonging unit.
*/
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;
unsigned int val;
char *endp;
int retval = 0;
down(&zfcp_data.config_sema);
unit = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &unit->status)) {
retval = -EBUSY;
goto out;
}
val = simple_strtoul(buf, &endp, 0);
if (((endp + 1) < (buf + count)) || (val != 0)) {
retval = -EINVAL;
goto out;
}
zfcp_erp_modify_unit_status(unit, 46, NULL,
ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED, 97, NULL);
zfcp_erp_wait(unit->port->adapter);
out:
up(&zfcp_data.config_sema);
return retval ? retval : (ssize_t) count;
}
/**
* zfcp_sysfs_unit_failed_show - failed state of unit
* @dev: pointer to belonging device
* @buf: pointer to input buffer
*
* Show function of "failed" attribute of unit. Will be
* "0" if unit is working, otherwise "1".
*/
static ssize_t
zfcp_sysfs_unit_failed_show(struct device *dev, struct device_attribute *attr, char *buf)
{
struct zfcp_unit *unit;
unit = dev_get_drvdata(dev);
if (atomic_test_mask(ZFCP_STATUS_COMMON_ERP_FAILED, &unit->status))
return sprintf(buf, "1\n");
else
return sprintf(buf, "0\n");
}
static DEVICE_ATTR(failed, S_IWUSR | S_IRUGO, zfcp_sysfs_unit_failed_show,
zfcp_sysfs_unit_failed_store);
static struct attribute *zfcp_unit_attrs[] = {
&dev_attr_failed.attr,
&dev_attr_in_recovery.attr,
&dev_attr_status.attr,
&dev_attr_access_denied.attr,
&dev_attr_access_shared.attr,
&dev_attr_access_readonly.attr,
NULL
};
static struct attribute_group zfcp_unit_attr_group = {
.attrs = zfcp_unit_attrs,
};
/**
* zfcp_sysfs_create_unit_files - create sysfs unit files
* @dev: pointer to belonging device
*
* Create all attributes of the sysfs representation of a unit.
*/
int
zfcp_sysfs_unit_create_files(struct device *dev)
{
return sysfs_create_group(&dev->kobj, &zfcp_unit_attr_group);
}
/**
* zfcp_sysfs_remove_unit_files - remove sysfs unit files
* @dev: pointer to belonging device
*
* Remove all attributes of the sysfs representation of a unit.
*/
void
zfcp_sysfs_unit_remove_files(struct device *dev)
{
sysfs_remove_group(&dev->kobj, &zfcp_unit_attr_group);
}