*
* Module interface and handling of zfcp data structures.
*
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
*/
/*
#define ZFCP_BUS_ID_SIZE 20
-static char *device;
-
MODULE_AUTHOR("IBM Deutschland Entwicklung GmbH - linux390@de.ibm.com");
MODULE_DESCRIPTION("FCP HBA driver");
MODULE_LICENSE("GPL");
-module_param(device, charp, 0400);
+static char *init_device;
+module_param_named(device, init_device, charp, 0400);
MODULE_PARM_DESC(device, "specify initial device");
+static struct kmem_cache *zfcp_cache_hw_align(const char *name,
+ unsigned long size)
+{
+ return kmem_cache_create(name, size, roundup_pow_of_two(size), 0, NULL);
+}
+
static int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
{
int idx;
return 1;
}
-static int __init zfcp_device_setup(char *devstr)
-{
- char *token;
- char *str;
-
- if (!devstr)
- return 0;
-
- /* duplicate devstr and keep the original for sysfs presentation*/
- str = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
- if (!str)
- return 0;
-
- strcpy(str, devstr);
-
- token = strsep(&str, ",");
- if (!token || strlen(token) >= ZFCP_BUS_ID_SIZE)
- goto err_out;
- strncpy(zfcp_data.init_busid, token, ZFCP_BUS_ID_SIZE);
-
- token = strsep(&str, ",");
- if (!token || strict_strtoull(token, 0,
- (unsigned long long *) &zfcp_data.init_wwpn))
- goto err_out;
-
- token = strsep(&str, ",");
- if (!token || strict_strtoull(token, 0,
- (unsigned long long *) &zfcp_data.init_fcp_lun))
- goto err_out;
-
- kfree(str);
- return 1;
-
- err_out:
- kfree(str);
- pr_err("%s is not a valid SCSI device\n", devstr);
- return 0;
-}
-
-static void __init zfcp_init_device_configure(void)
+static void __init zfcp_init_device_configure(char *busid, u64 wwpn, u64 lun)
{
struct zfcp_adapter *adapter;
struct zfcp_port *port;
down(&zfcp_data.config_sema);
read_lock_irq(&zfcp_data.config_lock);
- adapter = zfcp_get_adapter_by_busid(zfcp_data.init_busid);
+ adapter = zfcp_get_adapter_by_busid(busid);
if (adapter)
zfcp_adapter_get(adapter);
read_unlock_irq(&zfcp_data.config_lock);
if (!adapter)
goto out_adapter;
- port = zfcp_port_enqueue(adapter, zfcp_data.init_wwpn, 0, 0);
+ port = zfcp_port_enqueue(adapter, wwpn, 0, 0);
if (IS_ERR(port))
goto out_port;
- unit = zfcp_unit_enqueue(port, zfcp_data.init_fcp_lun);
+ unit = zfcp_unit_enqueue(port, lun);
if (IS_ERR(unit))
goto out_unit;
up(&zfcp_data.config_sema);
ccw_device_set_online(adapter->ccw_device);
zfcp_erp_wait(adapter);
- wait_event(adapter->erp_done_wqh,
- !(atomic_read(&unit->status) &
- ZFCP_STATUS_UNIT_SCSI_WORK_PENDING));
+ flush_work(&unit->scsi_work);
down(&zfcp_data.config_sema);
zfcp_unit_put(unit);
return;
}
-static struct kmem_cache *zfcp_cache_create(int size, char *name)
+static void __init zfcp_init_device_setup(char *devstr)
{
- int align = 1;
- while ((size - align) > 0)
- align <<= 1;
- return kmem_cache_create(name , size, align, 0, NULL);
+ char *token;
+ char *str;
+ char busid[ZFCP_BUS_ID_SIZE];
+ u64 wwpn, lun;
+
+ /* duplicate devstr and keep the original for sysfs presentation*/
+ str = kmalloc(strlen(devstr) + 1, GFP_KERNEL);
+ if (!str)
+ return;
+
+ strcpy(str, devstr);
+
+ token = strsep(&str, ",");
+ if (!token || strlen(token) >= ZFCP_BUS_ID_SIZE)
+ goto err_out;
+ strncpy(busid, token, ZFCP_BUS_ID_SIZE);
+
+ token = strsep(&str, ",");
+ if (!token || strict_strtoull(token, 0, (unsigned long long *) &wwpn))
+ goto err_out;
+
+ token = strsep(&str, ",");
+ if (!token || strict_strtoull(token, 0, (unsigned long long *) &lun))
+ goto err_out;
+
+ kfree(str);
+ zfcp_init_device_configure(busid, wwpn, lun);
+ return;
+
+ err_out:
+ kfree(str);
+ pr_err("%s is not a valid SCSI device\n", devstr);
}
static int __init zfcp_module_init(void)
{
int retval = -ENOMEM;
- zfcp_data.fsf_req_qtcb_cache = zfcp_cache_create(
- sizeof(struct zfcp_fsf_req_qtcb), "zfcp_fsf");
- if (!zfcp_data.fsf_req_qtcb_cache)
+ zfcp_data.gpn_ft_cache = zfcp_cache_hw_align("zfcp_gpn",
+ sizeof(struct ct_iu_gpn_ft_req));
+ if (!zfcp_data.gpn_ft_cache)
goto out;
- zfcp_data.sr_buffer_cache = zfcp_cache_create(
- sizeof(struct fsf_status_read_buffer), "zfcp_sr");
+ zfcp_data.qtcb_cache = zfcp_cache_hw_align("zfcp_qtcb",
+ sizeof(struct fsf_qtcb));
+ if (!zfcp_data.qtcb_cache)
+ goto out_qtcb_cache;
+
+ zfcp_data.sr_buffer_cache = zfcp_cache_hw_align("zfcp_sr",
+ sizeof(struct fsf_status_read_buffer));
if (!zfcp_data.sr_buffer_cache)
goto out_sr_cache;
- zfcp_data.gid_pn_cache = zfcp_cache_create(
- sizeof(struct zfcp_gid_pn_data), "zfcp_gid");
+ zfcp_data.gid_pn_cache = zfcp_cache_hw_align("zfcp_gid",
+ sizeof(struct zfcp_gid_pn_data));
if (!zfcp_data.gid_pn_cache)
goto out_gid_cache;
- zfcp_data.work_queue = create_singlethread_workqueue("zfcp_wq");
-
- INIT_LIST_HEAD(&zfcp_data.adapter_list_head);
sema_init(&zfcp_data.config_sema, 1);
rwlock_init(&zfcp_data.config_lock);
goto out_ccw_register;
}
- if (zfcp_device_setup(device))
- zfcp_init_device_configure();
-
- goto out;
+ if (init_device)
+ zfcp_init_device_setup(init_device);
+ return 0;
out_ccw_register:
misc_deregister(&zfcp_cfdc_misc);
out_gid_cache:
kmem_cache_destroy(zfcp_data.sr_buffer_cache);
out_sr_cache:
- kmem_cache_destroy(zfcp_data.fsf_req_qtcb_cache);
+ kmem_cache_destroy(zfcp_data.qtcb_cache);
+out_qtcb_cache:
+ kmem_cache_destroy(zfcp_data.gpn_ft_cache);
out:
return retval;
}
struct zfcp_port *port;
list_for_each_entry(port, &adapter->port_list_head, list)
- if ((port->wwpn == wwpn) && !(atomic_read(&port->status) &
- (ZFCP_STATUS_PORT_NO_WWPN | ZFCP_STATUS_COMMON_REMOVE)))
+ if ((port->wwpn == wwpn) &&
+ !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_REMOVE))
return port;
return NULL;
}
atomic_set(&unit->refcount, 0);
init_waitqueue_head(&unit->remove_wq);
+ INIT_WORK(&unit->scsi_work, zfcp_scsi_scan);
unit->port = port;
unit->fcp_lun = fcp_lun;
static int zfcp_allocate_low_mem_buffers(struct zfcp_adapter *adapter)
{
/* must only be called with zfcp_data.config_sema taken */
- adapter->pool.fsf_req_erp =
- mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
- if (!adapter->pool.fsf_req_erp)
+ adapter->pool.erp_req =
+ mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req));
+ if (!adapter->pool.erp_req)
+ return -ENOMEM;
+
+ adapter->pool.gid_pn_req =
+ mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req));
+ if (!adapter->pool.gid_pn_req)
return -ENOMEM;
- adapter->pool.fsf_req_scsi =
- mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
- if (!adapter->pool.fsf_req_scsi)
+ adapter->pool.scsi_req =
+ mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req));
+ if (!adapter->pool.scsi_req)
return -ENOMEM;
- adapter->pool.fsf_req_abort =
- mempool_create_slab_pool(1, zfcp_data.fsf_req_qtcb_cache);
- if (!adapter->pool.fsf_req_abort)
+ adapter->pool.scsi_abort =
+ mempool_create_kmalloc_pool(1, sizeof(struct zfcp_fsf_req));
+ if (!adapter->pool.scsi_abort)
return -ENOMEM;
- adapter->pool.fsf_req_status_read =
+ adapter->pool.status_read_req =
mempool_create_kmalloc_pool(FSF_STATUS_READS_RECOM,
sizeof(struct zfcp_fsf_req));
- if (!adapter->pool.fsf_req_status_read)
+ if (!adapter->pool.status_read_req)
return -ENOMEM;
- adapter->pool.data_status_read =
+ adapter->pool.qtcb_pool =
+ mempool_create_slab_pool(4, zfcp_data.qtcb_cache);
+ if (!adapter->pool.qtcb_pool)
+ return -ENOMEM;
+
+ adapter->pool.status_read_data =
mempool_create_slab_pool(FSF_STATUS_READS_RECOM,
zfcp_data.sr_buffer_cache);
- if (!adapter->pool.data_status_read)
+ if (!adapter->pool.status_read_data)
return -ENOMEM;
- adapter->pool.data_gid_pn =
+ adapter->pool.gid_pn_data =
mempool_create_slab_pool(1, zfcp_data.gid_pn_cache);
- if (!adapter->pool.data_gid_pn)
+ if (!adapter->pool.gid_pn_data)
return -ENOMEM;
return 0;
static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
{
/* zfcp_data.config_sema must be held */
- if (adapter->pool.fsf_req_erp)
- mempool_destroy(adapter->pool.fsf_req_erp);
- if (adapter->pool.fsf_req_scsi)
- mempool_destroy(adapter->pool.fsf_req_scsi);
- if (adapter->pool.fsf_req_abort)
- mempool_destroy(adapter->pool.fsf_req_abort);
- if (adapter->pool.fsf_req_status_read)
- mempool_destroy(adapter->pool.fsf_req_status_read);
- if (adapter->pool.data_status_read)
- mempool_destroy(adapter->pool.data_status_read);
- if (adapter->pool.data_gid_pn)
- mempool_destroy(adapter->pool.data_gid_pn);
+ if (adapter->pool.erp_req)
+ mempool_destroy(adapter->pool.erp_req);
+ if (adapter->pool.scsi_req)
+ mempool_destroy(adapter->pool.scsi_req);
+ if (adapter->pool.scsi_abort)
+ mempool_destroy(adapter->pool.scsi_abort);
+ if (adapter->pool.qtcb_pool)
+ mempool_destroy(adapter->pool.qtcb_pool);
+ if (adapter->pool.status_read_req)
+ mempool_destroy(adapter->pool.status_read_req);
+ if (adapter->pool.status_read_data)
+ mempool_destroy(adapter->pool.status_read_data);
+ if (adapter->pool.gid_pn_data)
+ mempool_destroy(adapter->pool.gid_pn_data);
}
/**
int zfcp_status_read_refill(struct zfcp_adapter *adapter)
{
while (atomic_read(&adapter->stat_miss) > 0)
- if (zfcp_fsf_status_read(adapter)) {
+ if (zfcp_fsf_status_read(adapter->qdio)) {
if (atomic_read(&adapter->stat_miss) >= 16) {
- zfcp_erp_adapter_reopen(adapter, 0, 103, NULL);
+ zfcp_erp_adapter_reopen(adapter, 0, "axsref1",
+ NULL);
return 1;
}
break;
adapter->fsf_lic_version);
}
+static int zfcp_setup_adapter_work_queue(struct zfcp_adapter *adapter)
+{
+ char name[TASK_COMM_LEN];
+
+ snprintf(name, sizeof(name), "zfcp_q_%s",
+ dev_name(&adapter->ccw_device->dev));
+ adapter->work_queue = create_singlethread_workqueue(name);
+
+ if (adapter->work_queue)
+ return 0;
+ return -ENOMEM;
+}
+
+static void zfcp_destroy_adapter_work_queue(struct zfcp_adapter *adapter)
+{
+ if (adapter->work_queue)
+ destroy_workqueue(adapter->work_queue);
+ adapter->work_queue = NULL;
+
+}
+
/**
* zfcp_adapter_enqueue - enqueue a new adapter to the list
* @ccw_device: pointer to the struct cc_device
if (!adapter)
return -ENOMEM;
+ adapter->gs = kzalloc(sizeof(struct zfcp_wka_ports), GFP_KERNEL);
+ if (!adapter->gs) {
+ kfree(adapter);
+ return -ENOMEM;
+ }
+
+ adapter->qdio = kzalloc(sizeof(struct zfcp_qdio), GFP_KERNEL);
+ if (!adapter->qdio)
+ goto qdio_mem_failed;
+
+ adapter->qdio->adapter = adapter;
+
ccw_device->handler = NULL;
adapter->ccw_device = ccw_device;
atomic_set(&adapter->refcount, 0);
- if (zfcp_qdio_allocate(adapter))
+ if (zfcp_qdio_allocate(adapter->qdio, ccw_device))
goto qdio_allocate_failed;
if (zfcp_allocate_low_mem_buffers(adapter))
if (zfcp_reqlist_alloc(adapter))
goto failed_low_mem_buffers;
- if (zfcp_adapter_debug_register(adapter))
+ if (zfcp_dbf_adapter_register(adapter))
goto debug_register_failed;
+ if (zfcp_setup_adapter_work_queue(adapter))
+ goto work_queue_failed;
+
init_waitqueue_head(&adapter->remove_wq);
init_waitqueue_head(&adapter->erp_thread_wqh);
init_waitqueue_head(&adapter->erp_done_wqh);
spin_lock_init(&adapter->req_list_lock);
- spin_lock_init(&adapter->hba_dbf_lock);
- spin_lock_init(&adapter->san_dbf_lock);
- spin_lock_init(&adapter->scsi_dbf_lock);
- spin_lock_init(&adapter->rec_dbf_lock);
- spin_lock_init(&adapter->req_q_lock);
+ spin_lock_init(&adapter->qdio->req_q_lock);
+ spin_lock_init(&adapter->qdio->stat_lock);
rwlock_init(&adapter->erp_lock);
rwlock_init(&adapter->abort_lock);
&zfcp_sysfs_adapter_attrs))
goto sysfs_failed;
- write_lock_irq(&zfcp_data.config_lock);
atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
- list_add_tail(&adapter->list, &zfcp_data.adapter_list_head);
- write_unlock_irq(&zfcp_data.config_lock);
-
- zfcp_fc_nameserver_init(adapter);
+ zfcp_fc_wka_ports_init(adapter);
if (!zfcp_adapter_scsi_register(adapter))
return 0;
sysfs_failed:
- zfcp_adapter_debug_unregister(adapter);
+ zfcp_destroy_adapter_work_queue(adapter);
+work_queue_failed:
+ zfcp_dbf_adapter_unregister(adapter->dbf);
debug_register_failed:
dev_set_drvdata(&ccw_device->dev, NULL);
kfree(adapter->req_list);
failed_low_mem_buffers:
zfcp_free_low_mem_buffers(adapter);
qdio_allocate_failed:
- zfcp_qdio_free(adapter);
+ zfcp_qdio_free(adapter->qdio);
+ kfree(adapter->qdio);
+qdio_mem_failed:
kfree(adapter);
return -ENOMEM;
}
cancel_work_sync(&adapter->scan_work);
cancel_work_sync(&adapter->stat_work);
+ zfcp_fc_wka_ports_force_offline(adapter->gs);
zfcp_adapter_scsi_unregister(adapter);
sysfs_remove_group(&adapter->ccw_device->dev.kobj,
&zfcp_sysfs_adapter_attrs);
if (!retval)
return;
- zfcp_adapter_debug_unregister(adapter);
-
- /* remove specified adapter data structure from list */
- write_lock_irq(&zfcp_data.config_lock);
- list_del(&adapter->list);
- write_unlock_irq(&zfcp_data.config_lock);
-
- zfcp_qdio_free(adapter);
-
+ zfcp_destroy_adapter_work_queue(adapter);
+ zfcp_dbf_adapter_unregister(adapter->dbf);
+ zfcp_qdio_free(adapter->qdio);
zfcp_free_low_mem_buffers(adapter);
kfree(adapter->req_list);
kfree(adapter->fc_stats);
kfree(adapter->stats_reset_data);
+ kfree(adapter->gs);
+ kfree(adapter->qdio);
kfree(adapter);
}
init_waitqueue_head(&port->remove_wq);
INIT_LIST_HEAD(&port->unit_list_head);
- INIT_WORK(&port->gid_pn_work, zfcp_erp_port_strategy_open_lookup);
+ 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;
/* mark port unusable as long as sysfs registration is not complete */
atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status);
dev_set_drvdata(&port->sysfs_device, port);
read_lock_irq(&zfcp_data.config_lock);
- if (!(status & ZFCP_STATUS_PORT_NO_WWPN))
- if (zfcp_get_port_by_wwpn(adapter, wwpn)) {
- read_unlock_irq(&zfcp_data.config_lock);
- goto err_out_free;
- }
+ if (zfcp_get_port_by_wwpn(adapter, wwpn)) {
+ read_unlock_irq(&zfcp_data.config_lock);
+ goto err_out_free;
+ }
read_unlock_irq(&zfcp_data.config_lock);
if (device_register(&port->sysfs_device))
*/
void zfcp_port_dequeue(struct zfcp_port *port)
{
- wait_event(port->remove_wq, atomic_read(&port->refcount) == 0);
write_lock_irq(&zfcp_data.config_lock);
list_del(&port->list);
write_unlock_irq(&zfcp_data.config_lock);
- if (port->rport)
- fc_remote_port_delete(port->rport);
- port->rport = NULL;
+ if (port->rport) {
+ port->rport->dd_data = NULL;
+ port->rport = NULL;
+ }
+ wait_event(port->remove_wq, atomic_read(&port->refcount) == 0);
+ cancel_work_sync(&port->rport_work); /* usually not necessary */
zfcp_adapter_put(port->adapter);
sysfs_remove_group(&port->sysfs_device.kobj, &zfcp_sysfs_port_attrs);
device_unregister(&port->sysfs_device);