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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.c167
1 files changed, 33 insertions, 134 deletions
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 6bba8092957..8867443b806 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -268,7 +268,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
switch (state) {
case DEV_STATE_NOT_OPER:
CIO_DEBUG(KERN_WARNING, 2,
- "SenseID : unknown device %04x on subchannel "
+ "cio: SenseID : unknown device %04x on subchannel "
"0.%x.%04x\n", cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
break;
@@ -293,7 +293,8 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
return;
}
/* Issue device info message. */
- CIO_DEBUG(KERN_INFO, 2, "SenseID : device 0.%x.%04x reports: "
+ CIO_DEBUG(KERN_INFO, 2,
+ "cio: SenseID : device 0.%x.%04x reports: "
"CU Type/Mod = %04X/%02X, Dev Type/Mod = "
"%04X/%02X\n",
cdev->private->dev_id.ssid,
@@ -303,7 +304,7 @@ ccw_device_recog_done(struct ccw_device *cdev, int state)
break;
case DEV_STATE_BOXED:
CIO_DEBUG(KERN_WARNING, 2,
- "SenseID : boxed device %04x on subchannel "
+ "cio: SenseID : boxed device %04x on subchannel "
"0.%x.%04x\n", cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
break;
@@ -388,7 +389,7 @@ ccw_device_done(struct ccw_device *cdev, int state)
if (state == DEV_STATE_BOXED)
CIO_DEBUG(KERN_WARNING, 2,
- "Boxed device %04x on subchannel %04x\n",
+ "cio: Boxed device %04x on subchannel %04x\n",
cdev->private->dev_id.devno, sch->schid.sch_no);
if (cdev->private->flags.donotify) {
@@ -445,7 +446,8 @@ static void __ccw_device_get_common_pgid(struct ccw_device *cdev)
if (cdev->private->pgid[last].inf.ps.state1 ==
SNID_STATE1_RESET)
/* No previous pgid found */
- memcpy(&cdev->private->pgid[0], &css[0]->global_pgid,
+ memcpy(&cdev->private->pgid[0],
+ &channel_subsystems[0]->global_pgid,
sizeof(struct pgid));
else
/* Use existing pgid */
@@ -542,51 +544,6 @@ ccw_device_recog_timeout(struct ccw_device *cdev, enum dev_event dev_event)
}
-static void
-ccw_device_nopath_notify(struct work_struct *work)
-{
- struct ccw_device_private *priv;
- struct ccw_device *cdev;
- struct subchannel *sch;
- int ret;
- unsigned long flags;
-
- priv = container_of(work, struct ccw_device_private, kick_work);
- cdev = priv->cdev;
- spin_lock_irqsave(cdev->ccwlock, flags);
- sch = to_subchannel(cdev->dev.parent);
- /* Extra sanity. */
- if (sch->lpm)
- goto out_unlock;
- if (sch->driver && sch->driver->notify) {
- spin_unlock_irqrestore(cdev->ccwlock, flags);
- ret = sch->driver->notify(&sch->dev, CIO_NO_PATH);
- spin_lock_irqsave(cdev->ccwlock, flags);
- } else
- ret = 0;
- if (!ret) {
- if (get_device(&sch->dev)) {
- /* Driver doesn't want to keep device. */
- cio_disable_subchannel(sch);
- if (get_device(&cdev->dev)) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_call_sch_unregister);
- queue_work(ccw_device_work,
- &cdev->private->kick_work);
- } else
- put_device(&sch->dev);
- }
- } else {
- cio_disable_subchannel(sch);
- ccw_device_set_timeout(cdev, 0);
- cdev->private->flags.fake_irb = 0;
- cdev->private->state = DEV_STATE_DISCONNECTED;
- wake_up(&cdev->private->wait_q);
- }
-out_unlock:
- spin_unlock_irqrestore(cdev->ccwlock, flags);
-}
-
void
ccw_device_verify_done(struct ccw_device *cdev, int err)
{
@@ -630,12 +587,9 @@ ccw_device_verify_done(struct ccw_device *cdev, int err)
default:
/* Reset oper notify indication after verify error. */
cdev->private->flags.donotify = 0;
- if (cdev->online) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify);
- queue_work(ccw_device_notify_work,
- &cdev->private->kick_work);
- } else
+ if (cdev->online)
+ dev_fsm_event(cdev, DEV_EVENT_NOTOPER);
+ else
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
break;
}
@@ -689,11 +643,7 @@ ccw_device_disband_done(struct ccw_device *cdev, int err)
break;
default:
cdev->private->flags.donotify = 0;
- if (get_device(&cdev->dev)) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_call_sch_unregister);
- queue_work(ccw_device_work, &cdev->private->kick_work);
- }
+ dev_fsm_event(cdev, DEV_EVENT_NOTOPER);
ccw_device_done(cdev, DEV_STATE_NOT_OPER);
break;
}
@@ -764,59 +714,16 @@ ccw_device_recog_notoper(struct ccw_device *cdev, enum dev_event dev_event)
}
/*
- * Handle not operational event while offline.
+ * Handle not operational event in non-special state.
*/
-static void
-ccw_device_offline_notoper(struct ccw_device *cdev, enum dev_event dev_event)
+static void ccw_device_generic_notoper(struct ccw_device *cdev,
+ enum dev_event dev_event)
{
struct subchannel *sch;
cdev->private->state = DEV_STATE_NOT_OPER;
sch = to_subchannel(cdev->dev.parent);
- if (get_device(&cdev->dev)) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_call_sch_unregister);
- queue_work(ccw_device_work, &cdev->private->kick_work);
- }
- wake_up(&cdev->private->wait_q);
-}
-
-/*
- * Handle not operational event while online.
- */
-static void
-ccw_device_online_notoper(struct ccw_device *cdev, enum dev_event dev_event)
-{
- struct subchannel *sch;
- int ret;
-
- sch = to_subchannel(cdev->dev.parent);
- if (sch->driver->notify) {
- spin_unlock_irq(cdev->ccwlock);
- ret = sch->driver->notify(&sch->dev,
- sch->lpm ? CIO_GONE : CIO_NO_PATH);
- spin_lock_irq(cdev->ccwlock);
- } else
- ret = 0;
- if (ret) {
- ccw_device_set_timeout(cdev, 0);
- cdev->private->flags.fake_irb = 0;
- cdev->private->state = DEV_STATE_DISCONNECTED;
- wake_up(&cdev->private->wait_q);
- return;
- }
- cdev->private->state = DEV_STATE_NOT_OPER;
- cio_disable_subchannel(sch);
- if (sch->schib.scsw.actl != 0) {
- // FIXME: not-oper indication to device driver ?
- ccw_device_call_handler(cdev);
- }
- if (get_device(&cdev->dev)) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_call_sch_unregister);
- queue_work(ccw_device_work, &cdev->private->kick_work);
- }
- wake_up(&cdev->private->wait_q);
+ css_schedule_eval(sch->schid);
}
/*
@@ -914,18 +821,9 @@ ccw_device_online_timeout(struct ccw_device *cdev, enum dev_event dev_event)
cdev->private->state = DEV_STATE_TIMEOUT_KILL;
return;
}
- if (ret == -ENODEV) {
- struct subchannel *sch;
-
- sch = to_subchannel(cdev->dev.parent);
- if (!sch->lpm) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify);
- queue_work(ccw_device_notify_work,
- &cdev->private->kick_work);
- } else
- dev_fsm_event(cdev, DEV_EVENT_NOTOPER);
- } else if (cdev->handler)
+ if (ret == -ENODEV)
+ dev_fsm_event(cdev, DEV_EVENT_NOTOPER);
+ else if (cdev->handler)
cdev->handler(cdev, cdev->private->intparm,
ERR_PTR(-ETIMEDOUT));
}
@@ -946,9 +844,10 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event)
/* Basic sense hasn't started. Try again. */
ccw_device_do_sense(cdev, irb);
else {
- printk(KERN_INFO "Huh? %s(%s): unsolicited "
- "interrupt...\n",
- __FUNCTION__, cdev->dev.bus_id);
+ CIO_MSG_EVENT(2, "Huh? 0.%x.%04x: unsolicited "
+ "interrupt during w4sense...\n",
+ cdev->private->dev_id.ssid,
+ cdev->private->dev_id.devno);
if (cdev->handler)
cdev->handler (cdev, 0, irb);
}
@@ -1215,8 +1114,8 @@ ccw_device_nop(struct ccw_device *cdev, enum dev_event dev_event)
static void
ccw_device_bug(struct ccw_device *cdev, enum dev_event dev_event)
{
- printk(KERN_EMERG "dev_jumptable[%i][%i] == NULL\n",
- cdev->private->state, dev_event);
+ CIO_MSG_EVENT(0, "dev_jumptable[%i][%i] == NULL\n",
+ cdev->private->state, dev_event);
BUG();
}
@@ -1231,7 +1130,7 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = {
[DEV_EVENT_VERIFY] = ccw_device_nop,
},
[DEV_STATE_SENSE_PGID] = {
- [DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_sense_pgid_irq,
[DEV_EVENT_TIMEOUT] = ccw_device_onoff_timeout,
[DEV_EVENT_VERIFY] = ccw_device_nop,
@@ -1243,50 +1142,50 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = {
[DEV_EVENT_VERIFY] = ccw_device_nop,
},
[DEV_STATE_OFFLINE] = {
- [DEV_EVENT_NOTOPER] = ccw_device_offline_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_offline_irq,
[DEV_EVENT_TIMEOUT] = ccw_device_nop,
[DEV_EVENT_VERIFY] = ccw_device_nop,
},
[DEV_STATE_VERIFY] = {
- [DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_verify_irq,
[DEV_EVENT_TIMEOUT] = ccw_device_onoff_timeout,
[DEV_EVENT_VERIFY] = ccw_device_delay_verify,
},
[DEV_STATE_ONLINE] = {
- [DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_irq,
[DEV_EVENT_TIMEOUT] = ccw_device_online_timeout,
[DEV_EVENT_VERIFY] = ccw_device_online_verify,
},
[DEV_STATE_W4SENSE] = {
- [DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_w4sense,
[DEV_EVENT_TIMEOUT] = ccw_device_nop,
[DEV_EVENT_VERIFY] = ccw_device_online_verify,
},
[DEV_STATE_DISBAND_PGID] = {
- [DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_disband_irq,
[DEV_EVENT_TIMEOUT] = ccw_device_onoff_timeout,
[DEV_EVENT_VERIFY] = ccw_device_nop,
},
[DEV_STATE_BOXED] = {
- [DEV_EVENT_NOTOPER] = ccw_device_offline_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_stlck_done,
[DEV_EVENT_TIMEOUT] = ccw_device_stlck_done,
[DEV_EVENT_VERIFY] = ccw_device_nop,
},
/* states to wait for i/o completion before doing something */
[DEV_STATE_CLEAR_VERIFY] = {
- [DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_clear_verify,
[DEV_EVENT_TIMEOUT] = ccw_device_nop,
[DEV_EVENT_VERIFY] = ccw_device_nop,
},
[DEV_STATE_TIMEOUT_KILL] = {
- [DEV_EVENT_NOTOPER] = ccw_device_online_notoper,
+ [DEV_EVENT_NOTOPER] = ccw_device_generic_notoper,
[DEV_EVENT_INTERRUPT] = ccw_device_killing_irq,
[DEV_EVENT_TIMEOUT] = ccw_device_killing_timeout,
[DEV_EVENT_VERIFY] = ccw_device_nop, //FIXME
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-04 15:28:11 +0000