#include <asm/ccwdev.h>
#include <asm/cio.h>
+#include <asm/chpid.h>
#include "cio.h"
#include "cio_debug.h"
#include "device.h"
#include "chsc.h"
#include "ioasm.h"
+#include "chp.h"
int
device_is_online(struct subchannel *sch)
ret = stsch(sch->schid, &sch->schib);
if (ret || !sch->schib.pmcw.dnv)
return -ENODEV;
- if (!sch->schib.pmcw.ena || sch->schib.scsw.actl == 0)
- /* Not operational or no activity -> done. */
+ if (!sch->schib.pmcw.ena)
+ /* Not operational -> done. */
return 0;
/* Stage 1: cancel io. */
if (!(sch->schib.scsw.actl & SCSW_ACTL_HALT_PEND) &&
/*
* 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);
queue_work(ccw_device_work, &cdev->private->kick_work);
* 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;
+ struct chp_id chpid;
+ chp_id_init(&chpid);
for (i = 0; i<8; i++) {
mask = 0x80 >> i;
if (!(sch->lpm & mask))
continue;
if (old_lpm & mask)
continue;
- chpid_is_actually_online(sch->schib.pmcw.chpid[i]);
+ chpid.id = sch->schib.pmcw.chpid[i];
+ if (!chp_is_registered(chpid))
+ css_schedule_eval_all();
}
}
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);
- 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(work);
- else {
+ if (sch->driver && sch->driver->notify) {
+ spin_unlock_irqrestore(cdev->ccwlock, flags);
+ ret = sch->driver->notify(&sch->dev, CIO_OPER);
+ spin_lock_irqsave(cdev->ccwlock, flags);
+ } else
+ ret = 0;
+ if (ret) {
/* Reenable channel measurements, if needed. */
+ spin_unlock_irqrestore(cdev->ccwlock, flags);
cmf_reenable(cdev);
+ spin_lock_irqsave(cdev->ccwlock, flags);
wake_up(&cdev->private->wait_q);
}
+ spin_unlock_irqrestore(cdev->ccwlock, flags);
+ if (!ret)
+ /* Driver doesn't want device back. */
+ ccw_device_do_unreg_rereg(work);
}
/*
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;
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)
- return;
- ret = (sch->driver && sch->driver->notify) ?
- sch->driver->notify(&sch->dev, CIO_NO_PATH) : 0;
+ 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. */
cdev->private->state = DEV_STATE_DISCONNECTED;
wake_up(&cdev->private->wait_q);
}
+out_unlock:
+ spin_unlock_irqrestore(cdev->ccwlock, flags);
}
void
default:
/* Reset oper notify indication after verify error. */
cdev->private->flags.donotify = 0;
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify);
- queue_work(ccw_device_notify_work, &cdev->private->kick_work);
- ccw_device_done(cdev, DEV_STATE_NOT_OPER);
+ if (cdev->online) {
+ PREPARE_WORK(&cdev->private->kick_work,
+ ccw_device_nopath_notify);
+ queue_work(ccw_device_notify_work,
+ &cdev->private->kick_work);
+ } else
+ ccw_device_done(cdev, DEV_STATE_NOT_OPER);
break;
}
}
{
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;
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 &&
- sch->driver->notify(&sch->dev, sch->lpm ? CIO_GONE : CIO_NO_PATH)) {
- 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;
+ 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);
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. */
/*
* 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;
sch = to_subchannel(cdev->dev.parent);
ccw_device_set_timeout(cdev, 0);
+ /* Start delayed path verification. */
+ ccw_device_online_verify(cdev, 0);
/* OK, i/o is dead now. Call interrupt handler. */
- cdev->private->state = DEV_STATE_ONLINE;
if (cdev->handler)
cdev->handler(cdev, cdev->private->intparm,
ERR_PTR(-EIO));
- if (!sch->lpm) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify);
- queue_work(ccw_device_notify_work, &cdev->private->kick_work);
- } else if (cdev->private->flags.doverify)
- /* Start delayed path verification. */
- ccw_device_online_verify(cdev, 0);
}
static void
ccw_device_set_timeout(cdev, 3*HZ);
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);
- return;
- }
- //FIXME: Can we get here?
- cdev->private->state = DEV_STATE_ONLINE;
+ /* Start delayed path verification. */
+ ccw_device_online_verify(cdev, 0);
if (cdev->handler)
cdev->handler(cdev, cdev->private->intparm,
ERR_PTR(-EIO));
cdev->private->state = DEV_STATE_TIMEOUT_KILL;
return;
}
- if (ret == -ENODEV) {
- 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);
- return;
- }
+ /* Start delayed path verification. */
+ ccw_device_online_verify(cdev, 0);
if (cdev->handler)
cdev->handler(cdev, cdev->private->intparm,
ERR_PTR(-EIO));
- if (!sch->lpm) {
- PREPARE_WORK(&cdev->private->kick_work,
- ccw_device_nopath_notify);
- queue_work(ccw_device_notify_work, &cdev->private->kick_work);
- } else
- /* Start delayed path verification. */
- ccw_device_online_verify(cdev, 0);
}
static void
/* 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 :/
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
git.openpandora.org / pandora-kernel.git / blobdiff