If a ccw device did not respond in time during internal io, we set it
into boxed state. With this patch we have the following behaviour:
* the ccw driver will get a notification if the device was online and
goes into the boxed state
* if the device was disconnected and got boxed nothing special is to be
done (it will be handled in reprobing later)
* if the device got boxed while initial sensing it will be unregistered
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
#define CIO_OPER 0x0004
/* Sick revalidation of device. */
#define CIO_REVALIDATE 0x0008
#define CIO_OPER 0x0004
/* Sick revalidation of device. */
#define CIO_REVALIDATE 0x0008
+/* Device did not respond in time. */
+#define CIO_BOXED 0x0010
/**
* struct ccw_dev_id - unique identifier for ccw devices
/**
* struct ccw_dev_id - unique identifier for ccw devices
ret = 0;
switch (event) {
case CIO_GONE:
ret = 0;
switch (event) {
case CIO_GONE:
case CIO_NO_PATH:
/* First of all call extended error reporting. */
dasd_eer_write(device, NULL, DASD_EER_NOPATH);
case CIO_NO_PATH:
/* First of all call extended error reporting. */
dasd_eer_write(device, NULL, DASD_EER_NOPATH);
return;
}
switch (cdev->private->state) {
return;
}
switch (cdev->private->state) {
+ case DEV_STATE_BOXED:
+ /* Device did not respond in time. */
case DEV_STATE_NOT_OPER:
cdev->private->flags.recog_done = 1;
/* Remove device found not operational. */
case DEV_STATE_NOT_OPER:
cdev->private->flags.recog_done = 1;
/* Remove device found not operational. */
if (atomic_dec_and_test(&ccw_device_init_count))
wake_up(&ccw_device_init_wq);
break;
if (atomic_dec_and_test(&ccw_device_init_count))
wake_up(&ccw_device_init_wq);
break;
- case DEV_STATE_BOXED:
- /* Device did not respond in time. */
case DEV_STATE_OFFLINE:
/*
* We can't register the device in interrupt context so
case DEV_STATE_OFFLINE:
/*
* We can't register the device in interrupt context so
old_lpm = 0;
if (sch->lpm != old_lpm)
__recover_lost_chpids(sch, old_lpm);
old_lpm = 0;
if (sch->lpm != old_lpm)
__recover_lost_chpids(sch, old_lpm);
- if (cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID) {
- if (state == DEV_STATE_NOT_OPER) {
- cdev->private->flags.recog_done = 1;
- cdev->private->state = DEV_STATE_DISCONNECTED;
- wake_up(&cdev->private->wait_q);
- return;
- }
- /* Boxed devices don't need extra treatment. */
+ if (cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID &&
+ (state == DEV_STATE_NOT_OPER || state == DEV_STATE_BOXED)) {
+ cdev->private->flags.recog_done = 1;
+ cdev->private->state = DEV_STATE_DISCONNECTED;
+ wake_up(&cdev->private->wait_q);
+ return;
}
notify = 0;
same_dev = 0; /* Keep the compiler quiet... */
}
notify = 0;
same_dev = 0; /* Keep the compiler quiet... */
sch->schid.ssid, sch->schid.sch_no);
break;
case DEV_STATE_OFFLINE:
sch->schid.ssid, sch->schid.sch_no);
break;
case DEV_STATE_OFFLINE:
- if (cdev->private->state == DEV_STATE_DISCONNECTED_SENSE_ID) {
same_dev = ccw_device_handle_oper(cdev);
notify = 1;
}
same_dev = ccw_device_handle_oper(cdev);
notify = 1;
}
" subchannel 0.%x.%04x\n",
cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
" subchannel 0.%x.%04x\n",
cdev->private->dev_id.devno,
sch->schid.ssid, sch->schid.sch_no);
+ if (cdev->id.cu_type != 0) { /* device was recognized before */
+ cdev->private->flags.recog_done = 1;
+ cdev->private->state = DEV_STATE_BOXED;
+ wake_up(&cdev->private->wait_q);
+ return;
+ }
break;
}
cdev->private->state = state;
break;
}
cdev->private->state = state;
cdev->private->state = state;
cdev->private->state = state;
-
- if (state == DEV_STATE_BOXED)
+ if (state == DEV_STATE_BOXED) {
CIO_MSG_EVENT(0, "Boxed device %04x on subchannel %04x\n",
cdev->private->dev_id.devno, sch->schid.sch_no);
CIO_MSG_EVENT(0, "Boxed device %04x on subchannel %04x\n",
cdev->private->dev_id.devno, sch->schid.sch_no);
+ if (cdev->online && !ccw_device_notify(cdev, CIO_BOXED))
+ ccw_device_schedule_sch_unregister(cdev);
+ cdev->private->flags.donotify = 0;
+ }
if (cdev->private->flags.donotify) {
cdev->private->flags.donotify = 0;
if (cdev->private->flags.donotify) {
cdev->private->flags.donotify = 0;
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
"ccnoti4", NULL);
break;
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
"ccnoti4", NULL);
break;
+ case CIO_BOXED:
+ dev_warn(&adapter->ccw_device->dev,
+ "The ccw device did not respond in time.\n");
+ zfcp_erp_adapter_shutdown(adapter, 0, "ccnoti5", NULL);
+ break;