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 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 void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
struct ccw_device *cdev;
struct zfcp_adapter *adapter;
struct zfcp_port *port;
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;
flush_work(&port->rport_work);
zfcp_unit_add(port, lun);
put_device(&port->dev);
out_port:
zfcp_ccw_adapter_put(adapter);
out_ccw_device:
put_device(&cdev->dev);
return;
}
static void zfcp_port_release(struct device *dev)
{
struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
zfcp_ccw_adapter_put(port->adapter);
kfree(port);
}
/**
* zfcp_port_enqueue - enqueue port to port list of adapter
* @adapter: adapter where remote port is added
* @wwpn: WWPN of the remote port to be enqueued
* @status: initial status for the port
* @d_id: destination id of the remote port to be enqueued
* Returns: pointer to enqueued port on success, ERR_PTR on error
*
* All port internal structures are set up and the sysfs entry is generated.
* d_id is used to enqueue ports with a well known address like the Directory
* Service for nameserver lookup.
*/
struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
u32 status, u32 d_id)
{
struct zfcp_port *port;
int retval = -ENOMEM;
kref_get(&adapter->ref);
port = zfcp_get_port_by_wwpn(adapter, wwpn);
if (port) {
put_device(&port->dev);
retval = -EEXIST;
goto err_out;
}
port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL);
if (!port)
goto err_out;
rwlock_init(&port->unit_list_lock);
INIT_LIST_HEAD(&port->unit_list);
atomic_set(&port->units, 0);
INIT_WORK(&port->gid_pn_work, zfcp_fc_port_did_lookup);
INIT_WORK(&port->test_link_work, zfcp_fc_link_test_work);
INIT_WORK(&port->rport_work, zfcp_scsi_rport_work);
port->adapter = adapter;
port->d_id = d_id;
port->wwpn = wwpn;
port->rport_task = RPORT_NONE;
port->dev.parent = &adapter->ccw_device->dev;
port->dev.groups = zfcp_port_attr_groups;
port->dev.release = zfcp_port_release;
if (dev_set_name(&port->dev, "0x%016llx", (unsigned long long)wwpn)) {
kfree(port);
goto err_out;
}
retval = -EINVAL;
if (device_register(&port->dev)) {
put_device(&port->dev);
goto err_out;
}
write_lock_irq(&adapter->port_list_lock);
list_add_tail(&port->list, &adapter->port_list);
write_unlock_irq(&adapter->port_list_lock);
atomic_or(status | ZFCP_STATUS_COMMON_RUNNING, &port->status);
return port;
err_out:
zfcp_ccw_adapter_put(adapter);
return ERR_PTR(retval);
}
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;
}
void zfcp_adapter_unregister(struct zfcp_adapter *adapter)
{
struct ccw_device *cdev = adapter->ccw_device;
cancel_work_sync(&adapter->scan_work);
cancel_work_sync(&adapter->stat_work);
zfcp_destroy_adapter_work_queue(adapter);
zfcp_fc_wka_ports_force_offline(adapter->gs);
zfcp_adapter_scsi_unregister(adapter);
sysfs_remove_group(&cdev->dev.kobj, &zfcp_sysfs_adapter_attrs);
zfcp_erp_thread_kill(adapter);
zfcp_dbf_adapter_unregister(adapter->dbf);
zfcp_qdio_destroy(adapter->qdio);
zfcp_ccw_adapter_put(adapter); /* final put to release */
}
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;
mutex_lock(&zfcp_sysfs_port_units_mutex);
if (atomic_read(&port->units) > 0) {
retval = -EBUSY;
mutex_unlock(&zfcp_sysfs_port_units_mutex);
goto out;
}
/* port is about to be removed, so no more unit_add */
atomic_set(&port->units, -1);
mutex_unlock(&zfcp_sysfs_port_units_mutex);
write_lock_irq(&adapter->port_list_lock);
list_del(&port->list);
write_unlock_irq(&adapter->port_list_lock);
put_device(&port->dev);
zfcp_erp_port_shutdown(port, 0, "syprs_1");
zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
out:
zfcp_ccw_adapter_put(adapter);
return retval ? retval : (ssize_t) count;
}
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 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->dev);
out_port:
zfcp_ccw_adapter_put(adapter);
out_ccw_device:
put_device(&cdev->dev);
return;
}
static long zfcp_cfdc_dev_ioctl(struct file *file, unsigned int command,
unsigned long arg)
{
struct zfcp_cfdc_data *data;
struct zfcp_cfdc_data __user *data_user;
struct zfcp_adapter *adapter;
struct zfcp_fsf_req *req;
struct zfcp_fsf_cfdc *fsf_cfdc;
int retval;
if (command != ZFCP_CFDC_IOC)
return -ENOTTY;
if (is_compat_task())
data_user = compat_ptr(arg);
else
data_user = (void __user *)arg;
if (!data_user)
return -EINVAL;
fsf_cfdc = kmalloc(sizeof(struct zfcp_fsf_cfdc), GFP_KERNEL);
if (!fsf_cfdc)
return -ENOMEM;
data = kmalloc(sizeof(struct zfcp_cfdc_data), GFP_KERNEL);
if (!data) {
retval = -ENOMEM;
goto no_mem_sense;
}
retval = copy_from_user(data, data_user, sizeof(*data));
if (retval) {
retval = -EFAULT;
goto free_buffer;
}
if (data->signature != 0xCFDCACDF) {
retval = -EINVAL;
goto free_buffer;
}
retval = zfcp_cfdc_set_fsf(fsf_cfdc, data->command);
adapter = zfcp_cfdc_get_adapter(data->devno);
if (!adapter) {
retval = -ENXIO;
goto free_buffer;
}
retval = zfcp_cfdc_sg_setup(data->command, fsf_cfdc->sg,
data_user->control_file);
if (retval)
goto adapter_put;
req = zfcp_fsf_control_file(adapter, fsf_cfdc);
if (IS_ERR(req)) {
retval = PTR_ERR(req);
goto free_sg;
}
if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
retval = -ENXIO;
goto free_fsf;
}
zfcp_cfdc_req_to_sense(data, req);
retval = copy_to_user(data_user, data, sizeof(*data_user));
if (retval) {
retval = -EFAULT;
goto free_fsf;
}
if (data->command & ZFCP_CFDC_UPLOAD)
retval = zfcp_cfdc_copy_to_user(&data_user->control_file,
fsf_cfdc->sg);
free_fsf:
zfcp_fsf_req_free(req);
free_sg:
zfcp_sg_free_table(fsf_cfdc->sg, ZFCP_CFDC_PAGES);
adapter_put:
zfcp_ccw_adapter_put(adapter);
free_buffer:
kfree(data);
no_mem_sense:
kfree(fsf_cfdc);
return retval;
}