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path: root/drivers/s390/scsi/zfcp_aux.c
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Diffstat (limited to 'drivers/s390/scsi/zfcp_aux.c')
-rw-r--r--drivers/s390/scsi/zfcp_aux.c130
1 files changed, 66 insertions, 64 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 3d4e3e3..8af7dfb 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -25,16 +25,21 @@
* Sven Schuetz
*/
+#define KMSG_COMPONENT "zfcp"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
#include <linux/miscdevice.h>
+#include <linux/seq_file.h>
#include "zfcp_ext.h"
-static char *device;
+#define ZFCP_BUS_ID_SIZE 20
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 int zfcp_reqlist_alloc(struct zfcp_adapter *adapter)
@@ -67,46 +72,7 @@ int zfcp_reqlist_isempty(struct zfcp_adapter *adapter)
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) >= BUS_ID_SIZE)
- goto err_out;
- strncpy(zfcp_data.init_busid, token, 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("zfcp: %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;
@@ -114,17 +80,17 @@ static void __init zfcp_init_device_configure(void)
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);
@@ -154,6 +120,42 @@ static struct kmem_cache *zfcp_cache_create(int size, char *name)
return kmem_cache_create(name , size, align, 0, NULL);
}
+static void __init zfcp_init_device_setup(char *devstr)
+{
+ 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;
@@ -175,7 +177,6 @@ static int __init zfcp_module_init(void)
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);
@@ -186,21 +187,20 @@ static int __init zfcp_module_init(void)
retval = misc_register(&zfcp_cfdc_misc);
if (retval) {
- pr_err("zfcp: Registering the misc device zfcp_cfdc failed\n");
+ pr_err("Registering the misc device zfcp_cfdc failed\n");
goto out_misc;
}
retval = zfcp_ccw_register();
if (retval) {
- pr_err("zfcp: The zfcp device driver could not register with "
+ pr_err("The zfcp device driver could not register with "
"the common I/O layer\n");
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);
@@ -436,6 +436,16 @@ static void _zfcp_status_read_scheduler(struct work_struct *work)
stat_work));
}
+static void zfcp_print_sl(struct seq_file *m, struct service_level *sl)
+{
+ struct zfcp_adapter *adapter =
+ container_of(sl, struct zfcp_adapter, service_level);
+
+ seq_printf(m, "zfcp: %s microcode level %x\n",
+ dev_name(&adapter->ccw_device->dev),
+ adapter->fsf_lic_version);
+}
+
/**
* zfcp_adapter_enqueue - enqueue a new adapter to the list
* @ccw_device: pointer to the struct cc_device
@@ -500,6 +510,8 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler);
INIT_WORK(&adapter->scan_work, _zfcp_scan_ports_later);
+ adapter->service_level.seq_print = zfcp_print_sl;
+
/* mark adapter unusable as long as sysfs registration is not complete */
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
@@ -509,14 +521,11 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
&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);
- return 0;
+ if (!zfcp_adapter_scsi_register(adapter))
+ return 0;
sysfs_failed:
zfcp_adapter_debug_unregister(adapter);
@@ -555,14 +564,7 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
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_free_low_mem_buffers(adapter);
kfree(adapter->req_list);
kfree(adapter->fc_stats);
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