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path: root/drivers/s390/block/dasd.c
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Diffstat (limited to 'drivers/s390/block/dasd.c')
-rw-r--r--drivers/s390/block/dasd.c101
1 files changed, 46 insertions, 55 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index e21465ecb60f..13a337faef43 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1448,9 +1448,9 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
cqr->starttime = jiffies;
cqr->retries--;
if (!test_bit(DASD_CQR_VERIFY_PATH, &cqr->flags)) {
- cqr->lpm &= device->path_data.opm;
+ cqr->lpm &= dasd_path_get_opm(device);
if (!cqr->lpm)
- cqr->lpm = device->path_data.opm;
+ cqr->lpm = dasd_path_get_opm(device);
}
if (cqr->cpmode == 1) {
rc = ccw_device_tm_start(device->cdev, cqr->cpaddr,
@@ -1483,8 +1483,8 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
DBF_DEV_EVENT(DBF_WARNING, device,
"start_IO: selected paths gone (%x)",
cqr->lpm);
- } else if (cqr->lpm != device->path_data.opm) {
- cqr->lpm = device->path_data.opm;
+ } else if (cqr->lpm != dasd_path_get_opm(device)) {
+ cqr->lpm = dasd_path_get_opm(device);
DBF_DEV_EVENT(DBF_DEBUG, device, "%s",
"start_IO: selected paths gone,"
" retry on all paths");
@@ -1493,11 +1493,10 @@ int dasd_start_IO(struct dasd_ccw_req *cqr)
"start_IO: all paths in opm gone,"
" do path verification");
dasd_generic_last_path_gone(device);
- device->path_data.opm = 0;
- device->path_data.ppm = 0;
- device->path_data.npm = 0;
- device->path_data.tbvpm =
- ccw_device_get_path_mask(device->cdev);
+ dasd_path_no_path(device);
+ dasd_path_set_tbvpm(device,
+ ccw_device_get_path_mask(
+ device->cdev));
}
break;
case -ENODEV:
@@ -1642,7 +1641,7 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
switch (PTR_ERR(irb)) {
case -EIO:
if (cqr && cqr->status == DASD_CQR_CLEAR_PENDING) {
- device = (struct dasd_device *) cqr->startdev;
+ device = cqr->startdev;
cqr->status = DASD_CQR_CLEARED;
dasd_device_clear_timer(device);
wake_up(&dasd_flush_wq);
@@ -1755,13 +1754,13 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
*/
if (!test_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags) &&
cqr->retries > 0) {
- if (cqr->lpm == device->path_data.opm)
+ if (cqr->lpm == dasd_path_get_opm(device))
DBF_DEV_EVENT(DBF_DEBUG, device,
"default ERP in fastpath "
"(%i retries left)",
cqr->retries);
if (!test_bit(DASD_CQR_VERIFY_PATH, &cqr->flags))
- cqr->lpm = device->path_data.opm;
+ cqr->lpm = dasd_path_get_opm(device);
cqr->status = DASD_CQR_QUEUED;
next = cqr;
} else
@@ -2002,17 +2001,18 @@ static void __dasd_device_check_path_events(struct dasd_device *device)
{
int rc;
- if (device->path_data.tbvpm) {
- if (device->stopped & ~(DASD_STOPPED_DC_WAIT |
- DASD_UNRESUMED_PM))
- return;
- rc = device->discipline->verify_path(
- device, device->path_data.tbvpm);
- if (rc)
- dasd_device_set_timer(device, 50);
- else
- device->path_data.tbvpm = 0;
- }
+ if (!dasd_path_get_tbvpm(device))
+ return;
+
+ if (device->stopped &
+ ~(DASD_STOPPED_DC_WAIT | DASD_UNRESUMED_PM))
+ return;
+ rc = device->discipline->verify_path(device,
+ dasd_path_get_tbvpm(device));
+ if (rc)
+ dasd_device_set_timer(device, 50);
+ else
+ dasd_path_clear_all_verify(device);
};
/*
@@ -3684,14 +3684,12 @@ int dasd_generic_notify(struct ccw_device *cdev, int event)
case CIO_GONE:
case CIO_BOXED:
case CIO_NO_PATH:
- device->path_data.opm = 0;
- device->path_data.ppm = 0;
- device->path_data.npm = 0;
+ dasd_path_no_path(device);
ret = dasd_generic_last_path_gone(device);
break;
case CIO_OPER:
ret = 1;
- if (device->path_data.opm)
+ if (dasd_path_get_opm(device))
ret = dasd_generic_path_operational(device);
break;
}
@@ -3702,48 +3700,32 @@ EXPORT_SYMBOL_GPL(dasd_generic_notify);
void dasd_generic_path_event(struct ccw_device *cdev, int *path_event)
{
- int chp;
- __u8 oldopm, eventlpm;
struct dasd_device *device;
+ int chp, oldopm;
device = dasd_device_from_cdev_locked(cdev);
if (IS_ERR(device))
return;
+
+ oldopm = dasd_path_get_opm(device);
for (chp = 0; chp < 8; chp++) {
- eventlpm = 0x80 >> chp;
if (path_event[chp] & PE_PATH_GONE) {
- oldopm = device->path_data.opm;
- device->path_data.opm &= ~eventlpm;
- device->path_data.ppm &= ~eventlpm;
- device->path_data.npm &= ~eventlpm;
- if (oldopm && !device->path_data.opm) {
- dev_warn(&device->cdev->dev,
- "No verified channel paths remain "
- "for the device\n");
- DBF_DEV_EVENT(DBF_WARNING, device,
- "%s", "last verified path gone");
- dasd_eer_write(device, NULL, DASD_EER_NOPATH);
- dasd_device_set_stop_bits(device,
- DASD_STOPPED_DC_WAIT);
- }
+ dasd_path_notoper(device, chp);
}
if (path_event[chp] & PE_PATH_AVAILABLE) {
- device->path_data.opm &= ~eventlpm;
- device->path_data.ppm &= ~eventlpm;
- device->path_data.npm &= ~eventlpm;
- device->path_data.tbvpm |= eventlpm;
+ dasd_path_available(device, chp);
dasd_schedule_device_bh(device);
}
if (path_event[chp] & PE_PATHGROUP_ESTABLISHED) {
- if (!(device->path_data.opm & eventlpm) &&
- !(device->path_data.tbvpm & eventlpm)) {
+ if (!dasd_path_is_operational(device, chp) &&
+ !dasd_path_need_verify(device, chp)) {
/*
* we can not establish a pathgroup on an
* unavailable path, so trigger a path
* verification first
*/
- device->path_data.tbvpm |= eventlpm;
- dasd_schedule_device_bh(device);
+ dasd_path_available(device, chp);
+ dasd_schedule_device_bh(device);
}
DBF_DEV_EVENT(DBF_WARNING, device, "%s",
"Pathgroup re-established\n");
@@ -3751,17 +3733,26 @@ void dasd_generic_path_event(struct ccw_device *cdev, int *path_event)
device->discipline->kick_validate(device);
}
}
+ if (oldopm && !dasd_path_get_opm(device)) {
+ dev_warn(&device->cdev->dev,
+ "No verified channel paths remain for the device\n");
+ DBF_DEV_EVENT(DBF_WARNING, device,
+ "%s", "last verified path gone");
+ dasd_eer_write(device, NULL, DASD_EER_NOPATH);
+ dasd_device_set_stop_bits(device,
+ DASD_STOPPED_DC_WAIT);
+ }
dasd_put_device(device);
}
EXPORT_SYMBOL_GPL(dasd_generic_path_event);
int dasd_generic_verify_path(struct dasd_device *device, __u8 lpm)
{
- if (!device->path_data.opm && lpm) {
- device->path_data.opm = lpm;
+ if (!dasd_path_get_opm(device) && lpm) {
+ dasd_path_set_opm(device, lpm);
dasd_generic_path_operational(device);
} else
- device->path_data.opm |= lpm;
+ dasd_path_add_opm(device, lpm);
return 0;
}
EXPORT_SYMBOL_GPL(dasd_generic_verify_path);
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-30 06:32:02 +0300