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;
mutex_lock(&zfcp_data.config_mutex);
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, "syuas_1", NULL);
zfcp_erp_wait(unit->port->adapter);
flush_work(&unit->scsi_work);
zfcp_unit_put(unit);
out:
mutex_unlock(&zfcp_data.config_mutex);
return retval ? retval : (ssize_t) count;
}
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 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);
zfcp_scsi_scan(unit);
out:
put_device(&port->dev);
return retval ? retval : (ssize_t) count;
}
/**
* 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, ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED);
zfcp_erp_wait(unit->port->adapter);
out:
up(&zfcp_data.config_sema);
return retval ? retval : (ssize_t) count;
}
/**
* 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 (!unit)
goto out;
retval = 0;
zfcp_erp_unit_reopen(unit, 0);
zfcp_erp_wait(unit->port->adapter);
zfcp_unit_put(unit);
out:
up(&zfcp_data.config_sema);
return retval ? retval : (ssize_t) count;
}
/**
* 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, 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;
}
/* restart error recovery only if adapter is online */
if (unit->port->adapter->ccw_device->online != 1) {
retval = -ENXIO;
goto out;
}
zfcp_erp_modify_unit_status(unit, ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
zfcp_erp_unit_reopen(unit, ZFCP_STATUS_COMMON_ERP_FAILED);
out:
up(&zfcp_data.config_sema);
return retval ? retval : count;
}
static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
struct ccw_device *ccwdev;
struct zfcp_adapter *adapter;
struct zfcp_port *port;
struct zfcp_unit *unit;
ccwdev = get_ccwdev_by_busid(&zfcp_ccw_driver, busid);
if (!ccwdev)
return;
if (ccw_device_set_online(ccwdev))
goto out_ccwdev;
mutex_lock(&zfcp_data.config_mutex);
adapter = dev_get_drvdata(&ccwdev->dev);
if (!adapter)
goto out_unlock;
zfcp_adapter_get(adapter);
port = zfcp_get_port_by_wwpn(adapter, wwpn);
if (!port)
goto out_port;
zfcp_port_get(port);
unit = zfcp_unit_enqueue(port, lun);
if (IS_ERR(unit))
goto out_unit;
mutex_unlock(&zfcp_data.config_mutex);
zfcp_erp_unit_reopen(unit, 0, "auidc_1", NULL);
zfcp_erp_wait(adapter);
flush_work(&unit->scsi_work);
mutex_lock(&zfcp_data.config_mutex);
zfcp_unit_put(unit);
out_unit:
zfcp_port_put(port);
out_port:
zfcp_adapter_put(adapter);
out_unlock:
mutex_unlock(&zfcp_data.config_mutex);
out_ccwdev:
put_device(&ccwdev->dev);
return;
}
static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
struct ccw_device *cdev;
struct zfcp_adapter *adapter;
struct zfcp_port *port;
struct zfcp_unit *unit;
cdev = get_ccwdev_by_busid(&zfcp_ccw_driver, busid);
if (!cdev)
return;
if (ccw_device_set_online(cdev))
goto out_ccw_device;
adapter = zfcp_ccw_adapter_by_cdev(cdev);
if (!adapter)
goto out_ccw_device;
port = zfcp_get_port_by_wwpn(adapter, wwpn);
if (!port)
goto out_port;
unit = zfcp_unit_enqueue(port, lun);
if (IS_ERR(unit))
goto out_unit;
zfcp_erp_unit_reopen(unit, 0, "auidc_1", NULL);
zfcp_erp_wait(adapter);
flush_work(&unit->scsi_work);
out_unit:
put_device(&port->sysfs_device);
out_port:
zfcp_ccw_adapter_put(adapter);
out_ccw_device:
put_device(&cdev->dev);
return;
}
/**
* zfcp_erp_unit_shutdown - Shutdown unit
* @unit: Unit to shut down.
* @clear: Status flags to clear.
* @id: Id for debug trace event.
* @ref: Reference for debug trace event.
*/
void zfcp_erp_unit_shutdown(struct zfcp_unit *unit, int clear, char *id,
void *ref)
{
int flags = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
zfcp_erp_unit_reopen(unit, clear | flags, id, ref);
}