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path: root/drivers/s390/cio/device_fsm.c
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Diffstat (limited to 'drivers/s390/cio/device_fsm.c')
-rw-r--r--drivers/s390/cio/device_fsm.c66
1 files changed, 40 insertions, 26 deletions
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 09c7672..51238e7 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -186,15 +186,14 @@ ccw_device_handle_oper(struct ccw_device *cdev)
/*
* Check if cu type and device type still match. If
* not, it is certainly another device and we have to
- * de- and re-register. Also check here for non-matching devno.
+ * de- and re-register.
*/
if (cdev->id.cu_type != cdev->private->senseid.cu_type ||
cdev->id.cu_model != cdev->private->senseid.cu_model ||
cdev->id.dev_type != cdev->private->senseid.dev_type ||
- cdev->id.dev_model != cdev->private->senseid.dev_model ||
- cdev->private->dev_id.devno != sch->schib.pmcw.dev) {
+ cdev->id.dev_model != cdev->private->senseid.dev_model) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_do_unreg_rereg, cdev);
+ ccw_device_do_unreg_rereg);
queue_work(ccw_device_work, &cdev->private->kick_work);
return 0;
}
@@ -207,7 +206,7 @@ ccw_device_handle_oper(struct ccw_device *cdev)
* been varied online on the SE so we have to find out by magic (i. e. driving
* the channel subsystem to device selection and updating our path masks).
*/
-static inline void
+static void
__recover_lost_chpids(struct subchannel *sch, int old_lpm)
{
int mask, i;
@@ -329,19 +328,21 @@ ccw_device_sense_id_done(struct ccw_device *cdev, int err)
}
static void
-ccw_device_oper_notify(void *data)
+ccw_device_oper_notify(struct work_struct *work)
{
+ struct ccw_device_private *priv;
struct ccw_device *cdev;
struct subchannel *sch;
int ret;
- cdev = data;
+ priv = container_of(work, struct ccw_device_private, kick_work);
+ cdev = priv->cdev;
sch = to_subchannel(cdev->dev.parent);
ret = (sch->driver && sch->driver->notify) ?
sch->driver->notify(&sch->dev, CIO_OPER) : 0;
if (!ret)
/* Driver doesn't want device back. */
- ccw_device_do_unreg_rereg(cdev);
+ ccw_device_do_unreg_rereg(work);
else {
/* Reenable channel measurements, if needed. */
cmf_reenable(cdev);
@@ -377,8 +378,7 @@ ccw_device_done(struct ccw_device *cdev, int state)
if (cdev->private->flags.donotify) {
cdev->private->flags.donotify = 0;
- PREPARE_WORK(&cdev->private->kick_work, ccw_device_oper_notify,
- cdev);
+ PREPARE_WORK(&cdev->private->kick_work, ccw_device_oper_notify);
queue_work(ccw_device_notify_work, &cdev->private->kick_work);
}
wake_up(&cdev->private->wait_q);
@@ -387,7 +387,7 @@ ccw_device_done(struct ccw_device *cdev, int state)
put_device (&cdev->dev);
}
-static inline int cmp_pgid(struct pgid *p1, struct pgid *p2)
+static int cmp_pgid(struct pgid *p1, struct pgid *p2)
{
char *c1;
char *c2;
@@ -528,13 +528,15 @@ ccw_device_recog_timeout(struct ccw_device *cdev, enum dev_event dev_event)
static void
-ccw_device_nopath_notify(void *data)
+ccw_device_nopath_notify(struct work_struct *work)
{
+ struct ccw_device_private *priv;
struct ccw_device *cdev;
struct subchannel *sch;
int ret;
- cdev = data;
+ priv = container_of(work, struct ccw_device_private, kick_work);
+ cdev = priv->cdev;
sch = to_subchannel(cdev->dev.parent);
/* Extra sanity. */
if (sch->lpm)
@@ -547,8 +549,7 @@ ccw_device_nopath_notify(void *data)
cio_disable_subchannel(sch);
if (get_device(&cdev->dev)) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_call_sch_unregister,
- cdev);
+ ccw_device_call_sch_unregister);
queue_work(ccw_device_work,
&cdev->private->kick_work);
} else
@@ -607,7 +608,7 @@ ccw_device_verify_done(struct ccw_device *cdev, int err)
/* Reset oper notify indication after verify error. */
cdev->private->flags.donotify = 0;
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify, cdev);
+ ccw_device_nopath_notify);
queue_work(ccw_device_notify_work, &cdev->private->kick_work);
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
break;
@@ -674,6 +675,10 @@ ccw_device_offline(struct ccw_device *cdev)
{
struct subchannel *sch;
+ if (ccw_device_is_orphan(cdev)) {
+ ccw_device_done(cdev, DEV_STATE_OFFLINE);
+ return 0;
+ }
sch = to_subchannel(cdev->dev.parent);
if (stsch(sch->schid, &sch->schib) || !sch->schib.pmcw.dnv)
return -ENODEV;
@@ -738,7 +743,7 @@ ccw_device_offline_notoper(struct ccw_device *cdev, enum dev_event dev_event)
sch = to_subchannel(cdev->dev.parent);
if (get_device(&cdev->dev)) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_call_sch_unregister, cdev);
+ ccw_device_call_sch_unregister);
queue_work(ccw_device_work, &cdev->private->kick_work);
}
wake_up(&cdev->private->wait_q);
@@ -769,7 +774,7 @@ ccw_device_online_notoper(struct ccw_device *cdev, enum dev_event dev_event)
}
if (get_device(&cdev->dev)) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_call_sch_unregister, cdev);
+ ccw_device_call_sch_unregister);
queue_work(ccw_device_work, &cdev->private->kick_work);
}
wake_up(&cdev->private->wait_q);
@@ -837,6 +842,8 @@ ccw_device_irq(struct ccw_device *cdev, enum dev_event dev_event)
call_handler_unsol:
if (cdev->handler)
cdev->handler (cdev, 0, irb);
+ if (cdev->private->flags.doverify)
+ ccw_device_online_verify(cdev, 0);
return;
}
/* Accumulate status and find out if a basic sense is needed. */
@@ -874,7 +881,7 @@ ccw_device_online_timeout(struct ccw_device *cdev, enum dev_event dev_event)
sch = to_subchannel(cdev->dev.parent);
if (!sch->lpm) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify, cdev);
+ ccw_device_nopath_notify);
queue_work(ccw_device_notify_work,
&cdev->private->kick_work);
} else
@@ -887,7 +894,7 @@ ccw_device_online_timeout(struct ccw_device *cdev, enum dev_event dev_event)
/*
* Got an interrupt for a basic sense.
*/
-void
+static void
ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event)
{
struct irb *irb;
@@ -969,7 +976,7 @@ ccw_device_killing_irq(struct ccw_device *cdev, enum dev_event dev_event)
ERR_PTR(-EIO));
if (!sch->lpm) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify, cdev);
+ ccw_device_nopath_notify);
queue_work(ccw_device_notify_work, &cdev->private->kick_work);
} else if (cdev->private->flags.doverify)
/* Start delayed path verification. */
@@ -992,7 +999,7 @@ ccw_device_killing_timeout(struct ccw_device *cdev, enum dev_event dev_event)
sch = to_subchannel(cdev->dev.parent);
if (!sch->lpm) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify, cdev);
+ ccw_device_nopath_notify);
queue_work(ccw_device_notify_work,
&cdev->private->kick_work);
} else
@@ -1021,7 +1028,7 @@ void device_kill_io(struct subchannel *sch)
if (ret == -ENODEV) {
if (!sch->lpm) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify, cdev);
+ ccw_device_nopath_notify);
queue_work(ccw_device_notify_work,
&cdev->private->kick_work);
} else
@@ -1033,7 +1040,7 @@ void device_kill_io(struct subchannel *sch)
ERR_PTR(-EIO));
if (!sch->lpm) {
PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify, cdev);
+ ccw_device_nopath_notify);
queue_work(ccw_device_notify_work, &cdev->private->kick_work);
} else
/* Start delayed path verification. */
@@ -1104,7 +1111,8 @@ device_trigger_reprobe(struct subchannel *sch)
/* Update some values. */
if (stsch(sch->schid, &sch->schib))
return;
-
+ if (!sch->schib.pmcw.dnv)
+ return;
/*
* The pim, pam, pom values may not be accurate, but they are the best
* we have before performing device selection :/
@@ -1118,7 +1126,13 @@ device_trigger_reprobe(struct subchannel *sch)
sch->schib.pmcw.mp = 1;
sch->schib.pmcw.intparm = (__u32)(unsigned long)sch;
/* We should also udate ssd info, but this has to wait. */
- ccw_device_start_id(cdev, 0);
+ /* Check if this is another device which appeared on the same sch. */
+ if (sch->schib.pmcw.dev != cdev->private->dev_id.devno) {
+ PREPARE_WORK(&cdev->private->kick_work,
+ ccw_device_move_to_orphanage);
+ queue_work(ccw_device_work, &cdev->private->kick_work);
+ } else
+ ccw_device_start_id(cdev, 0);
}
static void
generated by cgit v0.10.2 at 2024-11-21 09:27:06 (GMT)