aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/s390/scsi/zfcp_ccw.c73
-rw-r--r--drivers/s390/scsi/zfcp_dbf.c20
-rw-r--r--drivers/s390/scsi/zfcp_dbf.h1
-rw-r--r--drivers/s390/scsi/zfcp_def.h1
-rw-r--r--drivers/s390/scsi/zfcp_ext.h1
5 files changed, 86 insertions, 10 deletions
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index e8b7cee..de1bcfa 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -38,17 +38,23 @@ void zfcp_ccw_adapter_put(struct zfcp_adapter *adapter)
spin_unlock_irqrestore(&zfcp_ccw_adapter_ref_lock, flags);
}
-static int zfcp_ccw_activate(struct ccw_device *cdev)
-
+/**
+ * zfcp_ccw_activate - activate adapter and wait for it to finish
+ * @cdev: pointer to belonging ccw device
+ * @clear: Status flags to clear.
+ * @tag: s390dbf trace record tag
+ */
+static int zfcp_ccw_activate(struct ccw_device *cdev, int clear, char *tag)
{
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
if (!adapter)
return 0;
+ zfcp_erp_clear_adapter_status(adapter, clear);
zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
- "ccresu2");
+ tag);
zfcp_erp_wait(adapter);
flush_work(&adapter->scan_work);
@@ -163,26 +169,29 @@ static int zfcp_ccw_set_online(struct ccw_device *cdev)
BUG_ON(!zfcp_reqlist_isempty(adapter->req_list));
adapter->req_no = 0;
- zfcp_ccw_activate(cdev);
+ zfcp_ccw_activate(cdev, 0, "ccsonl1");
zfcp_ccw_adapter_put(adapter);
return 0;
}
/**
- * zfcp_ccw_set_offline - set_offline function of zfcp driver
+ * zfcp_ccw_offline_sync - shut down adapter and wait for it to finish
* @cdev: pointer to belonging ccw device
+ * @set: Status flags to set.
+ * @tag: s390dbf trace record tag
*
* This function gets called by the common i/o layer and sets an adapter
* into state offline.
*/
-static int zfcp_ccw_set_offline(struct ccw_device *cdev)
+static int zfcp_ccw_offline_sync(struct ccw_device *cdev, int set, char *tag)
{
struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
if (!adapter)
return 0;
- zfcp_erp_adapter_shutdown(adapter, 0, "ccsoff1");
+ zfcp_erp_set_adapter_status(adapter, set);
+ zfcp_erp_adapter_shutdown(adapter, 0, tag);
zfcp_erp_wait(adapter);
zfcp_ccw_adapter_put(adapter);
@@ -190,6 +199,18 @@ static int zfcp_ccw_set_offline(struct ccw_device *cdev)
}
/**
+ * zfcp_ccw_set_offline - set_offline function of zfcp driver
+ * @cdev: pointer to belonging ccw device
+ *
+ * This function gets called by the common i/o layer and sets an adapter
+ * into state offline.
+ */
+static int zfcp_ccw_set_offline(struct ccw_device *cdev)
+{
+ return zfcp_ccw_offline_sync(cdev, 0, "ccsoff1");
+}
+
+/**
* zfcp_ccw_notify - ccw notify function
* @cdev: pointer to belonging ccw device
* @event: indicates if adapter was detached or attached
@@ -206,6 +227,11 @@ static int zfcp_ccw_notify(struct ccw_device *cdev, int event)
switch (event) {
case CIO_GONE:
+ if (atomic_read(&adapter->status) &
+ ZFCP_STATUS_ADAPTER_SUSPENDED) { /* notification ignore */
+ zfcp_dbf_hba_basic("ccnigo1", adapter);
+ break;
+ }
dev_warn(&cdev->dev, "The FCP device has been detached\n");
zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti1");
break;
@@ -215,6 +241,11 @@ static int zfcp_ccw_notify(struct ccw_device *cdev, int event)
zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti2");
break;
case CIO_OPER:
+ if (atomic_read(&adapter->status) &
+ ZFCP_STATUS_ADAPTER_SUSPENDED) { /* notification ignore */
+ zfcp_dbf_hba_basic("ccniop1", adapter);
+ break;
+ }
dev_info(&cdev->dev, "The FCP device is operational again\n");
zfcp_erp_set_adapter_status(adapter,
ZFCP_STATUS_COMMON_RUNNING);
@@ -250,6 +281,28 @@ static void zfcp_ccw_shutdown(struct ccw_device *cdev)
zfcp_ccw_adapter_put(adapter);
}
+static int zfcp_ccw_suspend(struct ccw_device *cdev)
+{
+ zfcp_ccw_offline_sync(cdev, ZFCP_STATUS_ADAPTER_SUSPENDED, "ccsusp1");
+ return 0;
+}
+
+static int zfcp_ccw_thaw(struct ccw_device *cdev)
+{
+ /* trace records for thaw and final shutdown during suspend
+ can only be found in system dump until the end of suspend
+ but not after resume because it's based on the memory image
+ right after the very first suspend (freeze) callback */
+ zfcp_ccw_activate(cdev, 0, "ccthaw1");
+ return 0;
+}
+
+static int zfcp_ccw_resume(struct ccw_device *cdev)
+{
+ zfcp_ccw_activate(cdev, ZFCP_STATUS_ADAPTER_SUSPENDED, "ccresu1");
+ return 0;
+}
+
struct ccw_driver zfcp_ccw_driver = {
.driver = {
.owner = THIS_MODULE,
@@ -262,7 +315,7 @@ struct ccw_driver zfcp_ccw_driver = {
.set_offline = zfcp_ccw_set_offline,
.notify = zfcp_ccw_notify,
.shutdown = zfcp_ccw_shutdown,
- .freeze = zfcp_ccw_set_offline,
- .thaw = zfcp_ccw_activate,
- .restore = zfcp_ccw_activate,
+ .freeze = zfcp_ccw_suspend,
+ .thaw = zfcp_ccw_thaw,
+ .restore = zfcp_ccw_resume,
};
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 96d1462..8b18dc0 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -163,6 +163,26 @@ void zfcp_dbf_hba_bit_err(char *tag, struct zfcp_fsf_req *req)
spin_unlock_irqrestore(&dbf->hba_lock, flags);
}
+/**
+ * zfcp_dbf_hba_basic - trace event for basic adapter events
+ * @adapter: pointer to struct zfcp_adapter
+ */
+void zfcp_dbf_hba_basic(char *tag, struct zfcp_adapter *adapter)
+{
+ struct zfcp_dbf *dbf = adapter->dbf;
+ struct zfcp_dbf_hba *rec = &dbf->hba_buf;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dbf->hba_lock, flags);
+ memset(rec, 0, sizeof(*rec));
+
+ memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
+ rec->id = ZFCP_DBF_HBA_BASIC;
+
+ debug_event(dbf->hba, 1, rec, sizeof(*rec));
+ spin_unlock_irqrestore(&dbf->hba_lock, flags);
+}
+
static void zfcp_dbf_set_common(struct zfcp_dbf_rec *rec,
struct zfcp_adapter *adapter,
struct zfcp_port *port,
diff --git a/drivers/s390/scsi/zfcp_dbf.h b/drivers/s390/scsi/zfcp_dbf.h
index 714f087..3ac7a4b 100644
--- a/drivers/s390/scsi/zfcp_dbf.h
+++ b/drivers/s390/scsi/zfcp_dbf.h
@@ -154,6 +154,7 @@ enum zfcp_dbf_hba_id {
ZFCP_DBF_HBA_RES = 1,
ZFCP_DBF_HBA_USS = 2,
ZFCP_DBF_HBA_BIT = 3,
+ ZFCP_DBF_HBA_BASIC = 4,
};
/**
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 527ba48..53f2b7d 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -76,6 +76,7 @@ struct zfcp_reqlist;
#define ZFCP_STATUS_ADAPTER_SIOSL_ISSUED 0x00000004
#define ZFCP_STATUS_ADAPTER_XCONFIG_OK 0x00000008
#define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010
+#define ZFCP_STATUS_ADAPTER_SUSPENDED 0x00000040
#define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100
#define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200
#define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED 0x00000400
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 03627cfd..5830fe2 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -53,6 +53,7 @@ extern void zfcp_dbf_hba_fsf_uss(char *, struct zfcp_fsf_req *);
extern void zfcp_dbf_hba_fsf_res(char *, struct zfcp_fsf_req *);
extern void zfcp_dbf_hba_bit_err(char *, struct zfcp_fsf_req *);
extern void zfcp_dbf_hba_berr(struct zfcp_dbf *, struct zfcp_fsf_req *);
+extern void zfcp_dbf_hba_basic(char *, struct zfcp_adapter *);
extern void zfcp_dbf_san_req(char *, struct zfcp_fsf_req *, u32);
extern void zfcp_dbf_san_res(char *, struct zfcp_fsf_req *);
extern void zfcp_dbf_san_in_els(char *, struct zfcp_fsf_req *);
generated by cgit v1.1 at 2024-05-23 21:47:56 +0000