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-rw-r--r--drivers/s390/block/dasd.c237
-rw-r--r--drivers/s390/block/dasd_3990_erp.c47
-rw-r--r--drivers/s390/block/dasd_alias.c77
-rw-r--r--drivers/s390/block/dasd_diag.c20
-rw-r--r--drivers/s390/block/dasd_eckd.c170
-rw-r--r--drivers/s390/block/dasd_eckd.h4
-rw-r--r--drivers/s390/block/dasd_eer.c5
-rw-r--r--drivers/s390/block/dasd_fba.c11
-rw-r--r--drivers/s390/block/dasd_int.h13
-rw-r--r--drivers/s390/block/dasd_ioctl.c4
-rw-r--r--drivers/s390/block/dasd_proc.c7
-rw-r--r--drivers/s390/block/dcssblk.c2
-rw-r--r--drivers/s390/block/xpram.c2
13 files changed, 421 insertions, 178 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index aaccc8ecfa8f..fdb2e7c14506 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -24,7 +24,6 @@
#include <asm/ccwdev.h>
#include <asm/ebcdic.h>
#include <asm/idals.h>
-#include <asm/todclk.h>
#include <asm/itcw.h>
/* This is ugly... */
@@ -64,6 +63,7 @@ static void do_restore_device(struct work_struct *);
static void dasd_return_cqr_cb(struct dasd_ccw_req *, void *);
static void dasd_device_timeout(unsigned long);
static void dasd_block_timeout(unsigned long);
+static void __dasd_process_erp(struct dasd_device *, struct dasd_ccw_req *);
/*
* SECTION: Operations on the device structure.
@@ -960,7 +960,7 @@ static void dasd_device_timeout(unsigned long ptr)
device = (struct dasd_device *) ptr;
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
/* re-activate request queue */
- device->stopped &= ~DASD_STOPPED_PENDING;
+ dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
dasd_schedule_device_bh(device);
}
@@ -994,10 +994,9 @@ static void dasd_handle_killed_request(struct ccw_device *cdev,
return;
cqr = (struct dasd_ccw_req *) intparm;
if (cqr->status != DASD_CQR_IN_IO) {
- DBF_EVENT(DBF_DEBUG,
- "invalid status in handle_killed_request: "
- "bus_id %s, status %02x",
- dev_name(&cdev->dev), cqr->status);
+ DBF_EVENT_DEVID(DBF_DEBUG, cdev,
+ "invalid status in handle_killed_request: "
+ "%02x", cqr->status);
return;
}
@@ -1023,7 +1022,7 @@ void dasd_generic_handle_state_change(struct dasd_device *device)
/* First of all start sense subsystem status request. */
dasd_eer_snss(device);
- device->stopped &= ~DASD_STOPPED_PENDING;
+ dasd_device_remove_stop_bits(device, DASD_STOPPED_PENDING);
dasd_schedule_device_bh(device);
if (device->block)
dasd_schedule_block_bh(device->block);
@@ -1045,12 +1044,13 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
case -EIO:
break;
case -ETIMEDOUT:
- DBF_EVENT(DBF_WARNING, "%s(%s): request timed out\n",
- __func__, dev_name(&cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, cdev, "%s: "
+ "request timed out\n", __func__);
break;
default:
- DBF_EVENT(DBF_WARNING, "%s(%s): unknown error %ld\n",
- __func__, dev_name(&cdev->dev), PTR_ERR(irb));
+ DBF_EVENT_DEVID(DBF_WARNING, cdev, "%s: "
+ "unknown error %ld\n", __func__,
+ PTR_ERR(irb));
}
dasd_handle_killed_request(cdev, intparm);
return;
@@ -1405,6 +1405,20 @@ void dasd_schedule_device_bh(struct dasd_device *device)
tasklet_hi_schedule(&device->tasklet);
}
+void dasd_device_set_stop_bits(struct dasd_device *device, int bits)
+{
+ device->stopped |= bits;
+}
+EXPORT_SYMBOL_GPL(dasd_device_set_stop_bits);
+
+void dasd_device_remove_stop_bits(struct dasd_device *device, int bits)
+{
+ device->stopped &= ~bits;
+ if (!device->stopped)
+ wake_up(&generic_waitq);
+}
+EXPORT_SYMBOL_GPL(dasd_device_remove_stop_bits);
+
/*
* Queue a request to the head of the device ccw_queue.
* Start the I/O if possible.
@@ -1465,58 +1479,135 @@ static inline int _wait_for_wakeup(struct dasd_ccw_req *cqr)
}
/*
- * Queue a request to the tail of the device ccw_queue and wait for
- * it's completion.
+ * checks if error recovery is necessary, returns 1 if yes, 0 otherwise.
*/
-int dasd_sleep_on(struct dasd_ccw_req *cqr)
+static int __dasd_sleep_on_erp(struct dasd_ccw_req *cqr)
{
struct dasd_device *device;
- int rc;
+ dasd_erp_fn_t erp_fn;
+ if (cqr->status == DASD_CQR_FILLED)
+ return 0;
device = cqr->startdev;
+ if (test_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags)) {
+ if (cqr->status == DASD_CQR_TERMINATED) {
+ device->discipline->handle_terminated_request(cqr);
+ return 1;
+ }
+ if (cqr->status == DASD_CQR_NEED_ERP) {
+ erp_fn = device->discipline->erp_action(cqr);
+ erp_fn(cqr);
+ return 1;
+ }
+ if (cqr->status == DASD_CQR_FAILED)
+ dasd_log_sense(cqr, &cqr->irb);
+ if (cqr->refers) {
+ __dasd_process_erp(device, cqr);
+ return 1;
+ }
+ }
+ return 0;
+}
- cqr->callback = dasd_wakeup_cb;
- cqr->callback_data = (void *) &generic_waitq;
- dasd_add_request_tail(cqr);
- wait_event(generic_waitq, _wait_for_wakeup(cqr));
+static int __dasd_sleep_on_loop_condition(struct dasd_ccw_req *cqr)
+{
+ if (test_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags)) {
+ if (cqr->refers) /* erp is not done yet */
+ return 1;
+ return ((cqr->status != DASD_CQR_DONE) &&
+ (cqr->status != DASD_CQR_FAILED));
+ } else
+ return (cqr->status == DASD_CQR_FILLED);
+}
- if (cqr->status == DASD_CQR_DONE)
+static int _dasd_sleep_on(struct dasd_ccw_req *maincqr, int interruptible)
+{
+ struct dasd_device *device;
+ int rc;
+ struct list_head ccw_queue;
+ struct dasd_ccw_req *cqr;
+
+ INIT_LIST_HEAD(&ccw_queue);
+ maincqr->status = DASD_CQR_FILLED;
+ device = maincqr->startdev;
+ list_add(&maincqr->blocklist, &ccw_queue);
+ for (cqr = maincqr; __dasd_sleep_on_loop_condition(cqr);
+ cqr = list_first_entry(&ccw_queue,
+ struct dasd_ccw_req, blocklist)) {
+
+ if (__dasd_sleep_on_erp(cqr))
+ continue;
+ if (cqr->status != DASD_CQR_FILLED) /* could be failed */
+ continue;
+
+ /* Non-temporary stop condition will trigger fail fast */
+ if (device->stopped & ~DASD_STOPPED_PENDING &&
+ test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
+ (!dasd_eer_enabled(device))) {
+ cqr->status = DASD_CQR_FAILED;
+ continue;
+ }
+
+ /* Don't try to start requests if device is stopped */
+ if (interruptible) {
+ rc = wait_event_interruptible(
+ generic_waitq, !(device->stopped));
+ if (rc == -ERESTARTSYS) {
+ cqr->status = DASD_CQR_FAILED;
+ maincqr->intrc = rc;
+ continue;
+ }
+ } else
+ wait_event(generic_waitq, !(device->stopped));
+
+ cqr->callback = dasd_wakeup_cb;
+ cqr->callback_data = (void *) &generic_waitq;
+ dasd_add_request_tail(cqr);
+ if (interruptible) {
+ rc = wait_event_interruptible(
+ generic_waitq, _wait_for_wakeup(cqr));
+ if (rc == -ERESTARTSYS) {
+ dasd_cancel_req(cqr);
+ /* wait (non-interruptible) for final status */
+ wait_event(generic_waitq,
+ _wait_for_wakeup(cqr));
+ cqr->status = DASD_CQR_FAILED;
+ maincqr->intrc = rc;
+ continue;
+ }
+ } else
+ wait_event(generic_waitq, _wait_for_wakeup(cqr));
+ }
+
+ maincqr->endclk = get_clock();
+ if ((maincqr->status != DASD_CQR_DONE) &&
+ (maincqr->intrc != -ERESTARTSYS))
+ dasd_log_sense(maincqr, &maincqr->irb);
+ if (maincqr->status == DASD_CQR_DONE)
rc = 0;
- else if (cqr->intrc)
- rc = cqr->intrc;
+ else if (maincqr->intrc)
+ rc = maincqr->intrc;
else
rc = -EIO;
return rc;
}
/*
+ * Queue a request to the tail of the device ccw_queue and wait for
+ * it's completion.
+ */
+int dasd_sleep_on(struct dasd_ccw_req *cqr)
+{
+ return _dasd_sleep_on(cqr, 0);
+}
+
+/*
* Queue a request to the tail of the device ccw_queue and wait
* interruptible for it's completion.
*/
int dasd_sleep_on_interruptible(struct dasd_ccw_req *cqr)
{
- struct dasd_device *device;
- int rc;
-
- device = cqr->startdev;
- cqr->callback = dasd_wakeup_cb;
- cqr->callback_data = (void *) &generic_waitq;
- dasd_add_request_tail(cqr);
- rc = wait_event_interruptible(generic_waitq, _wait_for_wakeup(cqr));
- if (rc == -ERESTARTSYS) {
- dasd_cancel_req(cqr);
- /* wait (non-interruptible) for final status */
- wait_event(generic_waitq, _wait_for_wakeup(cqr));
- cqr->intrc = rc;
- }
-
- if (cqr->status == DASD_CQR_DONE)
- rc = 0;
- else if (cqr->intrc)
- rc = cqr->intrc;
- else
- rc = -EIO;
- return rc;
+ return _dasd_sleep_on(cqr, 1);
}
/*
@@ -1630,7 +1721,7 @@ static void dasd_block_timeout(unsigned long ptr)
block = (struct dasd_block *) ptr;
spin_lock_irqsave(get_ccwdev_lock(block->base->cdev), flags);
/* re-activate request queue */
- block->base->stopped &= ~DASD_STOPPED_PENDING;
+ dasd_device_remove_stop_bits(block->base, DASD_STOPPED_PENDING);
spin_unlock_irqrestore(get_ccwdev_lock(block->base->cdev), flags);
dasd_schedule_block_bh(block);
}
@@ -1657,11 +1748,10 @@ void dasd_block_clear_timer(struct dasd_block *block)
/*
* Process finished error recovery ccw.
*/
-static inline void __dasd_block_process_erp(struct dasd_block *block,
- struct dasd_ccw_req *cqr)
+static void __dasd_process_erp(struct dasd_device *device,
+ struct dasd_ccw_req *cqr)
{
dasd_erp_fn_t erp_fn;
- struct dasd_device *device = block->base;
if (cqr->status == DASD_CQR_DONE)
DBF_DEV_EVENT(DBF_NOTICE, device, "%s", "ERP successful");
@@ -1725,9 +1815,12 @@ static void __dasd_process_request_queue(struct dasd_block *block)
*/
if (!list_empty(&block->ccw_queue))
break;
- spin_lock_irqsave(get_ccwdev_lock(basedev->cdev), flags);
- basedev->stopped |= DASD_STOPPED_PENDING;
- spin_unlock_irqrestore(get_ccwdev_lock(basedev->cdev), flags);
+ spin_lock_irqsave(
+ get_ccwdev_lock(basedev->cdev), flags);
+ dasd_device_set_stop_bits(basedev,
+ DASD_STOPPED_PENDING);
+ spin_unlock_irqrestore(
+ get_ccwdev_lock(basedev->cdev), flags);
dasd_block_set_timer(block, HZ/2);
break;
}
@@ -1813,7 +1906,7 @@ restart:
cqr->status = DASD_CQR_FILLED;
cqr->retries = 255;
spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
- base->stopped |= DASD_STOPPED_QUIESCE;
+ dasd_device_set_stop_bits(base, DASD_STOPPED_QUIESCE);
spin_unlock_irqrestore(get_ccwdev_lock(base->cdev),
flags);
goto restart;
@@ -1821,7 +1914,7 @@ restart:
/* Process finished ERP request. */
if (cqr->refers) {
- __dasd_block_process_erp(block, cqr);
+ __dasd_process_erp(base, cqr);
goto restart;
}
@@ -1952,7 +2045,7 @@ restart_cb:
/* Process finished ERP request. */
if (cqr->refers) {
spin_lock_bh(&block->queue_lock);
- __dasd_block_process_erp(block, cqr);
+ __dasd_process_erp(block->base, cqr);
spin_unlock_bh(&block->queue_lock);
/* restart list_for_xx loop since dasd_process_erp
* might remove multiple elements */
@@ -2208,18 +2301,11 @@ int dasd_generic_probe(struct ccw_device *cdev,
{
int ret;
- ret = ccw_device_set_options(cdev, CCWDEV_DO_PATHGROUP);
- if (ret) {
- DBF_EVENT(DBF_WARNING,
- "dasd_generic_probe: could not set ccw-device options "
- "for %s\n", dev_name(&cdev->dev));
- return ret;
- }
ret = dasd_add_sysfs_files(cdev);
if (ret) {
- DBF_EVENT(DBF_WARNING,
- "dasd_generic_probe: could not add sysfs entries "
- "for %s\n", dev_name(&cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, cdev, "%s",
+ "dasd_generic_probe: could not add "
+ "sysfs entries");
return ret;
}
cdev->handler = &dasd_int_handler;
@@ -2418,16 +2504,16 @@ int dasd_generic_notify(struct ccw_device *cdev, int event)
cqr->status = DASD_CQR_QUEUED;
cqr->retries++;
}
- device->stopped |= DASD_STOPPED_DC_WAIT;
+ dasd_device_set_stop_bits(device, DASD_STOPPED_DC_WAIT);
dasd_device_clear_timer(device);
dasd_schedule_device_bh(device);
ret = 1;
break;
case CIO_OPER:
/* FIXME: add a sanity check. */
- device->stopped &= ~DASD_STOPPED_DC_WAIT;
+ dasd_device_remove_stop_bits(device, DASD_STOPPED_DC_WAIT);
if (device->stopped & DASD_UNRESUMED_PM) {
- device->stopped &= ~DASD_UNRESUMED_PM;
+ dasd_device_remove_stop_bits(device, DASD_UNRESUMED_PM);
dasd_restore_device(device);
ret = 1;
break;
@@ -2452,7 +2538,7 @@ int dasd_generic_pm_freeze(struct ccw_device *cdev)
if (IS_ERR(device))
return PTR_ERR(device);
/* disallow new I/O */
- device->stopped |= DASD_STOPPED_PM;
+ dasd_device_set_stop_bits(device, DASD_STOPPED_PM);
/* clear active requests */
INIT_LIST_HEAD(&freeze_queue);
spin_lock_irq(get_ccwdev_lock(cdev));
@@ -2504,14 +2590,18 @@ int dasd_generic_restore_device(struct ccw_device *cdev)
return PTR_ERR(device);
/* allow new IO again */
- device->stopped &= ~DASD_STOPPED_PM;
- device->stopped &= ~DASD_UNRESUMED_PM;
+ dasd_device_remove_stop_bits(device,
+ (DASD_STOPPED_PM | DASD_UNRESUMED_PM));
dasd_schedule_device_bh(device);
- if (device->discipline->restore)
+ /*
+ * call discipline restore function
+ * if device is stopped do nothing e.g. for disconnected devices
+ */
+ if (device->discipline->restore && !(device->stopped))
rc = device->discipline->restore(device);
- if (rc)
+ if (rc || device->stopped)
/*
* if the resume failed for the DASD we put it in
* an UNRESUMED stop state
@@ -2561,8 +2651,7 @@ static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
cqr->startdev = device;
cqr->memdev = device;
cqr->expires = 10*HZ;
- clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
- cqr->retries = 2;
+ cqr->retries = 256;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
index e8ff7b0c961d..44796ba4eb9b 100644
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -12,7 +12,6 @@
#include <linux/timer.h>
#include <linux/slab.h>
#include <asm/idals.h>
-#include <asm/todclk.h>
#define PRINTK_HEADER "dasd_erp(3990): "
@@ -70,8 +69,7 @@ dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status)
* processing until the started timer has expired or an related
* interrupt was received.
*/
-static void
-dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires)
+static void dasd_3990_erp_block_queue(struct dasd_ccw_req *erp, int expires)
{
struct dasd_device *device = erp->startdev;
@@ -81,10 +79,13 @@ dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires)
"blocking request queue for %is", expires/HZ);
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->stopped |= DASD_STOPPED_PENDING;
+ dasd_device_set_stop_bits(device, DASD_STOPPED_PENDING);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
erp->status = DASD_CQR_FILLED;
- dasd_block_set_timer(device->block, expires);
+ if (erp->block)
+ dasd_block_set_timer(erp->block, expires);
+ else
+ dasd_device_set_timer(device, expires);
}
/*
@@ -243,9 +244,13 @@ dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier)
* DESCRIPTION
* Setup ERP to do the ERP action 1 (see Reference manual).
* Repeat the operation on a different channel path.
- * If all alternate paths have been tried, the request is posted with a
- * permanent error.
- * Note: duplex handling is not implemented (yet).
+ * As deviation from the recommended recovery action, we reset the path mask
+ * after we have tried each path and go through all paths a second time.
+ * This will cover situations where only one path at a time is actually down,
+ * but all paths fail and recover just with the same sequence and timing as
+ * we try to use them (flapping links).
+ * If all alternate paths have been tried twice, the request is posted with
+ * a permanent error.
*
* PARAMETER
* erp pointer to the current ERP
@@ -254,17 +259,25 @@ dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier)
* erp pointer to the ERP
*
*/
-static struct dasd_ccw_req *
-dasd_3990_erp_action_1(struct dasd_ccw_req * erp)
+static struct dasd_ccw_req *dasd_3990_erp_action_1_sec(struct dasd_ccw_req *erp)
{
+ erp->function = dasd_3990_erp_action_1_sec;
+ dasd_3990_erp_alternate_path(erp);
+ return erp;
+}
+static struct dasd_ccw_req *dasd_3990_erp_action_1(struct dasd_ccw_req *erp)
+{
erp->function = dasd_3990_erp_action_1;
-
dasd_3990_erp_alternate_path(erp);
-
+ if (erp->status == DASD_CQR_FAILED) {
+ erp->status = DASD_CQR_FILLED;
+ erp->retries = 10;
+ erp->lpm = LPM_ANYPATH;
+ erp->function = dasd_3990_erp_action_1_sec;
+ }
return erp;
-
-} /* end dasd_3990_erp_action_1 */
+} /* end dasd_3990_erp_action_1(b) */
/*
* DASD_3990_ERP_ACTION_4
@@ -2295,6 +2308,7 @@ static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr)
return cqr;
}
+ ccw = cqr->cpaddr;
if (cqr->cpmode == 1) {
/* make a shallow copy of the original tcw but set new tsb */
erp->cpmode = 1;
@@ -2303,6 +2317,9 @@ static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr)
tsb = (struct tsb *) &tcw[1];
*tcw = *((struct tcw *)cqr->cpaddr);
tcw->tsb = (long)tsb;
+ } else if (ccw->cmd_code == DASD_ECKD_CCW_PSF) {
+ /* PSF cannot be chained from NOOP/TIC */
+ erp->cpaddr = cqr->cpaddr;
} else {
/* initialize request with default TIC to current ERP/CQR */
ccw = erp->cpaddr;
@@ -2487,6 +2504,8 @@ dasd_3990_erp_further_erp(struct dasd_ccw_req *erp)
erp = dasd_3990_erp_action_1(erp);
+ } else if (erp->function == dasd_3990_erp_action_1_sec) {
+ erp = dasd_3990_erp_action_1_sec(erp);
} else if (erp->function == dasd_3990_erp_action_5) {
/* retries have not been successful */
diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
index 70a008c00522..fd1231738ef4 100644
--- a/drivers/s390/block/dasd_alias.c
+++ b/drivers/s390/block/dasd_alias.c
@@ -152,6 +152,7 @@ static struct alias_lcu *_allocate_lcu(struct dasd_uid *uid)
INIT_WORK(&lcu->suc_data.worker, summary_unit_check_handling_work);
INIT_DELAYED_WORK(&lcu->ruac_data.dwork, lcu_update_work);
spin_lock_init(&lcu->lock);
+ init_completion(&lcu->lcu_setup);
return lcu;
out_err4:
@@ -240,6 +241,67 @@ int dasd_alias_make_device_known_to_lcu(struct dasd_device *device)
}
/*
+ * The first device to be registered on an LCU will have to do
+ * some additional setup steps to configure that LCU on the
+ * storage server. All further devices should wait with their
+ * initialization until the first device is done.
+ * To synchronize this work, the first device will call
+ * dasd_alias_lcu_setup_complete when it is done, and all
+ * other devices will wait for it with dasd_alias_wait_for_lcu_setup.
+ */
+void dasd_alias_lcu_setup_complete(struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ unsigned long flags;
+ struct alias_server *server;
+ struct alias_lcu *lcu;
+ struct dasd_uid *uid;
+
+ private = (struct dasd_eckd_private *) device->private;
+ uid = &private->uid;
+ lcu = NULL;
+ spin_lock_irqsave(&aliastree.lock, flags);
+ server = _find_server(uid);
+ if (server)
+ lcu = _find_lcu(server, uid);
+ spin_unlock_irqrestore(&aliastree.lock, flags);
+ if (!lcu) {
+ DBF_EVENT_DEVID(DBF_ERR, device->cdev,
+ "could not find lcu for %04x %02x",
+ uid->ssid, uid->real_unit_addr);
+ WARN_ON(1);
+ return;
+ }
+ complete_all(&lcu->lcu_setup);
+}
+
+void dasd_alias_wait_for_lcu_setup(struct dasd_device *device)
+{
+ struct dasd_eckd_private *private;
+ unsigned long flags;
+ struct alias_server *server;
+ struct alias_lcu *lcu;
+ struct dasd_uid *uid;
+
+ private = (struct dasd_eckd_private *) device->private;
+ uid = &private->uid;
+ lcu = NULL;
+ spin_lock_irqsave(&aliastree.lock, flags);
+ server = _find_server(uid);
+ if (server)
+ lcu = _find_lcu(server, uid);
+ spin_unlock_irqrestore(&aliastree.lock, flags);
+ if (!lcu) {
+ DBF_EVENT_DEVID(DBF_ERR, device->cdev,
+ "could not find lcu for %04x %02x",
+ uid->ssid, uid->real_unit_addr);
+ WARN_ON(1);
+ return;
+ }
+ wait_for_completion(&lcu->lcu_setup);
+}
+
+/*
* This function removes a device from the scope of alias management.
* The complicated part is to make sure that it is not in use by
* any of the workers. If necessary cancel the work.
@@ -755,11 +817,11 @@ static void __stop_device_on_lcu(struct dasd_device *device,
{
/* If pos == device then device is already locked! */
if (pos == device) {
- pos->stopped |= DASD_STOPPED_SU;
+ dasd_device_set_stop_bits(pos, DASD_STOPPED_SU);
return;
}
spin_lock(get_ccwdev_lock(pos->cdev));
- pos->stopped |= DASD_STOPPED_SU;
+ dasd_device_set_stop_bits(pos, DASD_STOPPED_SU);
spin_unlock(get_ccwdev_lock(pos->cdev));
}
@@ -793,26 +855,26 @@ static void _unstop_all_devices_on_lcu(struct alias_lcu *lcu)
list_for_each_entry(device, &lcu->active_devices, alias_list) {
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->stopped &= ~DASD_STOPPED_SU;
+ dasd_device_remove_stop_bits(device, DASD_STOPPED_SU);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
}
list_for_each_entry(device, &lcu->inactive_devices, alias_list) {
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->stopped &= ~DASD_STOPPED_SU;
+ dasd_device_remove_stop_bits(device, DASD_STOPPED_SU);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
}
list_for_each_entry(pavgroup, &lcu->grouplist, group) {
list_for_each_entry(device, &pavgroup->baselist, alias_list) {
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->stopped &= ~DASD_STOPPED_SU;
+ dasd_device_remove_stop_bits(device, DASD_STOPPED_SU);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev),
flags);
}
list_for_each_entry(device, &pavgroup->aliaslist, alias_list) {
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->stopped &= ~DASD_STOPPED_SU;
+ dasd_device_remove_stop_bits(device, DASD_STOPPED_SU);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev),
flags);
}
@@ -836,7 +898,8 @@ static void summary_unit_check_handling_work(struct work_struct *work)
/* 2. reset summary unit check */
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->stopped &= ~(DASD_STOPPED_SU | DASD_STOPPED_PENDING);
+ dasd_device_remove_stop_bits(device,
+ (DASD_STOPPED_SU | DASD_STOPPED_PENDING));
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
reset_summary_unit_check(lcu, device, suc_data->reason);
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 4e49b4a6c880..f64d0db881b4 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -24,7 +24,6 @@
#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/s390_ext.h>
-#include <asm/todclk.h>
#include <asm/vtoc.h>
#include <asm/diag.h>
@@ -145,6 +144,15 @@ dasd_diag_erp(struct dasd_device *device)
mdsk_term_io(device);
rc = mdsk_init_io(device, device->block->bp_block, 0, NULL);
+ if (rc == 4) {
+ if (!(device->features & DASD_FEATURE_READONLY)) {
+ dev_warn(&device->cdev->dev,
+ "The access mode of a DIAG device changed"
+ " to read-only");
+ device->features |= DASD_FEATURE_READONLY;
+ }
+ rc = 0;
+ }
if (rc)
dev_warn(&device->cdev->dev, "DIAG ERP failed with "
"rc=%d\n", rc);
@@ -433,16 +441,20 @@ dasd_diag_check_device(struct dasd_device *device)
for (sb = 512; sb < bsize; sb = sb << 1)
block->s2b_shift++;
rc = mdsk_init_io(device, block->bp_block, 0, NULL);
- if (rc) {
+ if (rc && (rc != 4)) {
dev_warn(&device->cdev->dev, "DIAG initialization "
"failed with rc=%d\n", rc);
rc = -EIO;
} else {
+ if (rc == 4)
+ device->features |= DASD_FEATURE_READONLY;
dev_info(&device->cdev->dev,
- "New DASD with %ld byte/block, total size %ld KB\n",
+ "New DASD with %ld byte/block, total size %ld KB%s\n",
(unsigned long) block->bp_block,
(unsigned long) (block->blocks <<
- block->s2b_shift) >> 1);
+ block->s2b_shift) >> 1,
+ (rc == 4) ? ", read-only device" : "");
+ rc = 0;
}
out_label:
free_page((long) label);
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 417b97cd3f94..5819dc02a143 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -24,7 +24,6 @@
#include <asm/idals.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
-#include <asm/todclk.h>
#include <asm/uaccess.h>
#include <asm/cio.h>
#include <asm/ccwdev.h>
@@ -78,6 +77,11 @@ MODULE_DEVICE_TABLE(ccw, dasd_eckd_ids);
static struct ccw_driver dasd_eckd_driver; /* see below */
+#define INIT_CQR_OK 0
+#define INIT_CQR_UNFORMATTED 1
+#define INIT_CQR_ERROR 2
+
+
/* initial attempt at a probe function. this can be simplified once
* the other detection code is gone */
static int
@@ -86,11 +90,12 @@ dasd_eckd_probe (struct ccw_device *cdev)
int ret;
/* set ECKD specific ccw-device options */
- ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE);
+ ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE |
+ CCWDEV_DO_PATHGROUP | CCWDEV_DO_MULTIPATH);
if (ret) {
- DBF_EVENT(DBF_WARNING,
- "dasd_eckd_probe: could not set ccw-device options "
- "for %s\n", dev_name(&cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, cdev, "%s",
+ "dasd_eckd_probe: could not set "
+ "ccw-device options");
return ret;
}
ret = dasd_generic_probe(cdev, &dasd_eckd_discipline);
@@ -749,8 +754,7 @@ static struct dasd_ccw_req *dasd_eckd_build_rcd_lpm(struct dasd_device *device,
cqr->block = NULL;
cqr->expires = 10*HZ;
cqr->lpm = lpm;
- clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
- cqr->retries = 2;
+ cqr->retries = 256;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
@@ -885,16 +889,15 @@ static int dasd_eckd_read_conf(struct dasd_device *device)
rc = dasd_eckd_read_conf_lpm(device, &conf_data,
&conf_len, lpm);
if (rc && rc != -EOPNOTSUPP) { /* -EOPNOTSUPP is ok */
- DBF_EVENT(DBF_WARNING,
+ DBF_EVENT_DEVID(DBF_WARNING, device->cdev,
"Read configuration data returned "
- "error %d for device: %s", rc,
- dev_name(&device->cdev->dev));
+ "error %d", rc);
return rc;
}
if (conf_data == NULL) {
- DBF_EVENT(DBF_WARNING, "No configuration "
- "data retrieved for device: %s",
- dev_name(&device->cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, device->cdev, "%s",
+ "No configuration data "
+ "retrieved");
continue; /* no error */
}
/* save first valid configuration data */
@@ -941,16 +944,14 @@ static int dasd_eckd_read_features(struct dasd_device *device)
sizeof(struct dasd_rssd_features)),
device);
if (IS_ERR(cqr)) {
- DBF_EVENT(DBF_WARNING, "Could not allocate initialization "
- "request for device: %s",
- dev_name(&device->cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, device->cdev, "%s", "Could not "
+ "allocate initialization request");
return PTR_ERR(cqr);
}
cqr->startdev = device;
cqr->memdev = device;
cqr->block = NULL;
- clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
- cqr->retries = 5;
+ cqr->retries = 256;
cqr->expires = 10 * HZ;
/* Prepare for Read Subsystem Data */
@@ -1012,9 +1013,9 @@ static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device,
}
psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data;
psf_ssc_data->order = PSF_ORDER_SSC;
- psf_ssc_data->suborder = 0x40;
+ psf_ssc_data->suborder = 0xc0;
if (enable_pav) {
- psf_ssc_data->suborder |= 0x88;
+ psf_ssc_data->suborder |= 0x08;
psf_ssc_data->reserved[0] = 0x88;
}
ccw = cqr->cpaddr;
@@ -1025,6 +1026,7 @@ static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device,
cqr->startdev = device;
cqr->memdev = device;
cqr->block = NULL;
+ cqr->retries = 256;
cqr->expires = 10*HZ;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
@@ -1057,7 +1059,7 @@ dasd_eckd_psf_ssc(struct dasd_device *device, int enable_pav)
/*
* Valide storage server of current device.
*/
-static int dasd_eckd_validate_server(struct dasd_device *device)
+static void dasd_eckd_validate_server(struct dasd_device *device)
{
int rc;
struct dasd_eckd_private *private;
@@ -1068,15 +1070,12 @@ static int dasd_eckd_validate_server(struct dasd_device *device)
else
enable_pav = 1;
rc = dasd_eckd_psf_ssc(device, enable_pav);
+
/* may be requested feature is not available on server,
* therefore just report error and go ahead */
private = (struct dasd_eckd_private *) device->private;
- DBF_EVENT(DBF_WARNING, "PSF-SSC on storage subsystem %s.%s.%04x "
- "returned rc=%d for device: %s",
- private->uid.vendor, private->uid.serial,
- private->uid.ssid, rc, dev_name(&device->cdev->dev));
- /* RE-Read Configuration Data */
- return dasd_eckd_read_conf(device);
+ DBF_EVENT_DEVID(DBF_WARNING, device->cdev, "PSF-SSC for SSID %04x "
+ "returned rc=%d", private->uid.ssid, rc);
}
/*
@@ -1090,6 +1089,15 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
struct dasd_block *block;
int is_known, rc;
+ if (!ccw_device_is_pathgroup(device->cdev)) {
+ dev_warn(&device->cdev->dev,
+ "A channel path group could not be established\n");
+ return -EIO;
+ }
+ if (!ccw_device_is_multipath(device->cdev)) {
+ dev_info(&device->cdev->dev,
+ "The DASD is not operating in multipath mode\n");
+ }
private = (struct dasd_eckd_private *) device->private;
if (!private) {
private = kzalloc(sizeof(*private), GFP_KERNEL | GFP_DMA);
@@ -1123,9 +1131,9 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
if (private->uid.type == UA_BASE_DEVICE) {
block = dasd_alloc_block();
if (IS_ERR(block)) {
- DBF_EVENT(DBF_WARNING, "could not allocate dasd "
- "block structure for device: %s",
- dev_name(&device->cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, device->cdev, "%s",
+ "could not allocate dasd "
+ "block structure");
rc = PTR_ERR(block);
goto out_err1;
}
@@ -1139,12 +1147,21 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
rc = is_known;
goto out_err2;
}
+ /*
+ * dasd_eckd_vaildate_server is done on the first device that
+ * is found for an LCU. All later other devices have to wait
+ * for it, so they will read the correct feature codes.
+ */
if (!is_known) {
- /* new lcu found */
- rc = dasd_eckd_validate_server(device); /* will switch pav on */
- if (rc)
- goto out_err3;
- }
+ dasd_eckd_validate_server(device);
+ dasd_alias_lcu_setup_complete(device);
+ } else
+ dasd_alias_wait_for_lcu_setup(device);
+
+ /* device may report different configuration data after LCU setup */
+ rc = dasd_eckd_read_conf(device);
+ if (rc)
+ goto out_err3;
/* Read Feature Codes */
dasd_eckd_read_features(device);
@@ -1153,9 +1170,8 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
rc = dasd_generic_read_dev_chars(device, DASD_ECKD_MAGIC,
&private->rdc_data, 64);
if (rc) {
- DBF_EVENT(DBF_WARNING,
- "Read device characteristics failed, rc=%d for "
- "device: %s", rc, dev_name(&device->cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, device->cdev,
+ "Read device characteristic failed, rc=%d", rc);
goto out_err3;
}
/* find the vaild cylinder size */
@@ -1256,12 +1272,29 @@ dasd_eckd_analysis_ccw(struct dasd_device *device)
cqr->block = NULL;
cqr->startdev = device;
cqr->memdev = device;
- cqr->retries = 0;
+ cqr->retries = 255;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
}
+/* differentiate between 'no record found' and any other error */
+static int dasd_eckd_analysis_evaluation(struct dasd_ccw_req *init_cqr)
+{
+ char *sense;
+ if (init_cqr->status == DASD_CQR_DONE)
+ return INIT_CQR_OK;
+ else if (init_cqr->status == DASD_CQR_NEED_ERP ||
+ init_cqr->status == DASD_CQR_FAILED) {
+ sense = dasd_get_sense(&init_cqr->irb);
+ if (sense && (sense[1] & SNS1_NO_REC_FOUND))
+ return INIT_CQR_UNFORMATTED;
+ else
+ return INIT_CQR_ERROR;
+ } else
+ return INIT_CQR_ERROR;
+}
+
/*
* This is the callback function for the init_analysis cqr. It saves
* the status of the initial analysis ccw before it frees it and kicks
@@ -1269,21 +1302,20 @@ dasd_eckd_analysis_ccw(struct dasd_device *device)
* dasd_eckd_do_analysis again (if the devices has not been marked
* for deletion in the meantime).
*/
-static void
-dasd_eckd_analysis_callback(struct dasd_ccw_req *init_cqr, void *data)
+static void dasd_eckd_analysis_callback(struct dasd_ccw_req *init_cqr,
+ void *data)
{
struct dasd_eckd_private *private;
struct dasd_device *device;
device = init_cqr->startdev;
private = (struct dasd_eckd_private *) device->private;
- private->init_cqr_status = init_cqr->status;
+ private->init_cqr_status = dasd_eckd_analysis_evaluation(init_cqr);
dasd_sfree_request(init_cqr, device);
dasd_kick_device(device);
}
-static int
-dasd_eckd_start_analysis(struct dasd_block *block)
+static int dasd_eckd_start_analysis(struct dasd_block *block)
{
struct dasd_eckd_private *private;
struct dasd_ccw_req *init_cqr;
@@ -1295,27 +1327,44 @@ dasd_eckd_start_analysis(struct dasd_block *block)
init_cqr->callback = dasd_eckd_analysis_callback;
init_cqr->callback_data = NULL;
init_cqr->expires = 5*HZ;
+ /* first try without ERP, so we can later handle unformatted
+ * devices as special case
+ */
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &init_cqr->flags);
+ init_cqr->retries = 0;
dasd_add_request_head(init_cqr);
return -EAGAIN;
}
-static int
-dasd_eckd_end_analysis(struct dasd_block *block)
+static int dasd_eckd_end_analysis(struct dasd_block *block)
{
struct dasd_device *device;
struct dasd_eckd_private *private;
struct eckd_count *count_area;
unsigned int sb, blk_per_trk;
int status, i;
+ struct dasd_ccw_req *init_cqr;
device = block->base;
private = (struct dasd_eckd_private *) device->private;
status = private->init_cqr_status;
private->init_cqr_status = -1;
- if (status != DASD_CQR_DONE) {
- dev_warn(&device->cdev->dev,
- "The DASD is not formatted\n");
+ if (status == INIT_CQR_ERROR) {
+ /* try again, this time with full ERP */
+ init_cqr = dasd_eckd_analysis_ccw(device);
+ dasd_sleep_on(init_cqr);
+ status = dasd_eckd_analysis_evaluation(init_cqr);
+ dasd_sfree_request(init_cqr, device);
+ }
+
+ if (status == INIT_CQR_UNFORMATTED) {
+ dev_warn(&device->cdev->dev, "The DASD is not formatted\n");
return -EMEDIUMTYPE;
+ } else if (status == INIT_CQR_ERROR) {
+ dev_err(&device->cdev->dev,
+ "Detecting the DASD disk layout failed because "
+ "of an I/O error\n");
+ return -EIO;
}
private->uses_cdl = 1;
@@ -1607,8 +1656,7 @@ dasd_eckd_format_device(struct dasd_device * device,
}
fcp->startdev = device;
fcp->memdev = device;
- clear_bit(DASD_CQR_FLAGS_USE_ERP, &fcp->flags);
- fcp->retries = 5; /* set retry counter to enable default ERP */
+ fcp->retries = 256;
fcp->buildclk = get_clock();
fcp->status = DASD_CQR_FILLED;
return fcp;
@@ -2690,6 +2738,7 @@ dasd_eckd_performance(struct dasd_device *device, void __user *argp)
cqr->startdev = device;
cqr->memdev = device;
cqr->retries = 0;
+ clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
cqr->expires = 10 * HZ;
/* Prepare for Read Subsystem Data */
@@ -3240,11 +3289,15 @@ int dasd_eckd_restore_device(struct dasd_device *device)
if (is_known < 0)
return is_known;
if (!is_known) {
- /* new lcu found */
- rc = dasd_eckd_validate_server(device); /* will switch pav on */
- if (rc)
- goto out_err;
- }
+ dasd_eckd_validate_server(device);
+ dasd_alias_lcu_setup_complete(device);
+ } else
+ dasd_alias_wait_for_lcu_setup(device);
+
+ /* RE-Read Configuration Data */
+ rc = dasd_eckd_read_conf(device);
+ if (rc)
+ goto out_err;
/* Read Feature Codes */
dasd_eckd_read_features(device);
@@ -3253,9 +3306,8 @@ int dasd_eckd_restore_device(struct dasd_device *device)
rc = dasd_generic_read_dev_chars(device, DASD_ECKD_MAGIC,
&temp_rdc_data, 64);
if (rc) {
- DBF_EVENT(DBF_WARNING,
- "Read device characteristics failed, rc=%d for "
- "device: %s", rc, dev_name(&device->cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, device->cdev,
+ "Read device characteristic failed, rc=%d", rc);
goto out_err;
}
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index ad45bcac3ce4..864d53c04201 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -414,6 +414,7 @@ struct alias_lcu {
struct summary_unit_check_work_data suc_data;
struct read_uac_work_data ruac_data;
struct dasd_ccw_req *rsu_cqr;
+ struct completion lcu_setup;
};
struct alias_pav_group {
@@ -460,5 +461,6 @@ int dasd_alias_remove_device(struct dasd_device *);
struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
-
+void dasd_alias_lcu_setup_complete(struct dasd_device *);
+void dasd_alias_wait_for_lcu_setup(struct dasd_device *);
#endif /* DASD_ECKD_H */
diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index d96039eae59b..1f3e967aaba8 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -536,7 +536,6 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
eerb = kzalloc(sizeof(struct eerbuffer), GFP_KERNEL);
if (!eerb)
return -ENOMEM;
- lock_kernel();
eerb->buffer_page_count = eer_pages;
if (eerb->buffer_page_count < 1 ||
eerb->buffer_page_count > INT_MAX / PAGE_SIZE) {
@@ -544,7 +543,6 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
DBF_EVENT(DBF_WARNING, "can't open device since module "
"parameter eer_pages is smaller than 1 or"
" bigger than %d", (int)(INT_MAX / PAGE_SIZE));
- unlock_kernel();
return -EINVAL;
}
eerb->buffersize = eerb->buffer_page_count * PAGE_SIZE;
@@ -552,14 +550,12 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
GFP_KERNEL);
if (!eerb->buffer) {
kfree(eerb);
- unlock_kernel();
return -ENOMEM;
}
if (dasd_eer_allocate_buffer_pages(eerb->buffer,
eerb->buffer_page_count)) {
kfree(eerb->buffer);
kfree(eerb);
- unlock_kernel();
return -ENOMEM;
}
filp->private_data = eerb;
@@ -567,7 +563,6 @@ static int dasd_eer_open(struct inode *inp, struct file *filp)
list_add(&eerb->list, &bufferlist);
spin_unlock_irqrestore(&bufferlock, flags);
- unlock_kernel();
return nonseekable_open(inp,filp);
}
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index f245377e8e27..0f152444ac77 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -20,7 +20,6 @@
#include <asm/idals.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
-#include <asm/todclk.h>
#include <asm/ccwdev.h>
#include "dasd_int.h"
@@ -141,9 +140,8 @@ dasd_fba_check_characteristics(struct dasd_device *device)
}
block = dasd_alloc_block();
if (IS_ERR(block)) {
- DBF_EVENT(DBF_WARNING, "could not allocate dasd block "
- "structure for device: %s",
- dev_name(&device->cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, cdev, "%s", "could not allocate "
+ "dasd block structure");
device->private = NULL;
kfree(private);
return PTR_ERR(block);
@@ -155,9 +153,8 @@ dasd_fba_check_characteristics(struct dasd_device *device)
rc = dasd_generic_read_dev_chars(device, DASD_FBA_MAGIC,
&private->rdc_data, 32);
if (rc) {
- DBF_EVENT(DBF_WARNING, "Read device characteristics returned "
- "error %d for device: %s",
- rc, dev_name(&device->cdev->dev));
+ DBF_EVENT_DEVID(DBF_WARNING, cdev, "Read device "
+ "characteristics returned error %d", rc);
device->block = NULL;
dasd_free_block(block);
device->private = NULL;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 8afd9fa00875..e4c2143dabf6 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -108,6 +108,16 @@ do { \
d_data); \
} while(0)
+#define DBF_EVENT_DEVID(d_level, d_cdev, d_str, d_data...) \
+do { \
+ struct ccw_dev_id __dev_id; \
+ ccw_device_get_id(d_cdev, &__dev_id); \
+ debug_sprintf_event(dasd_debug_area, \
+ d_level, \
+ "0.%x.%04x " d_str "\n", \
+ __dev_id.ssid, __dev_id.devno, d_data); \
+} while (0)
+
#define DBF_EXC(d_level, d_str, d_data...)\
do { \
debug_sprintf_exception(dasd_debug_area, \
@@ -595,6 +605,9 @@ int dasd_generic_restore_device(struct ccw_device *);
int dasd_generic_read_dev_chars(struct dasd_device *, int, void *, int);
char *dasd_get_sense(struct irb *);
+void dasd_device_set_stop_bits(struct dasd_device *, int);
+void dasd_device_remove_stop_bits(struct dasd_device *, int);
+
/* externals in dasd_devmap.c */
extern int dasd_max_devindex;
extern int dasd_probeonly;
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index f756a1b0c57a..478bcdb90b6f 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -101,7 +101,7 @@ static int dasd_ioctl_quiesce(struct dasd_block *block)
pr_info("%s: The DASD has been put in the quiesce "
"state\n", dev_name(&base->cdev->dev));
spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
- base->stopped |= DASD_STOPPED_QUIESCE;
+ dasd_device_set_stop_bits(base, DASD_STOPPED_QUIESCE);
spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags);
return 0;
}
@@ -122,7 +122,7 @@ static int dasd_ioctl_resume(struct dasd_block *block)
pr_info("%s: I/O operations have been resumed "
"on the DASD\n", dev_name(&base->cdev->dev));
spin_lock_irqsave(get_ccwdev_lock(base->cdev), flags);
- base->stopped &= ~DASD_STOPPED_QUIESCE;
+ dasd_device_remove_stop_bits(base, DASD_STOPPED_QUIESCE);
spin_unlock_irqrestore(get_ccwdev_lock(base->cdev), flags);
dasd_schedule_block_bh(block);
diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c
index 654daa3cdfda..6315fbd8e68b 100644
--- a/drivers/s390/block/dasd_proc.c
+++ b/drivers/s390/block/dasd_proc.c
@@ -14,6 +14,7 @@
#define KMSG_COMPONENT "dasd"
#include <linux/ctype.h>
+#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/vmalloc.h>
#include <linux/proc_fs.h>
@@ -215,7 +216,7 @@ dasd_statistics_read(char *page, char **start, off_t off,
}
prof = &dasd_global_profile;
- /* prevent couter 'overflow' on output */
+ /* prevent counter 'overflow' on output */
for (factor = 1; (prof->dasd_io_reqs / factor) > 9999999;
factor *= 10);
@@ -272,10 +273,10 @@ dasd_statistics_write(struct file *file, const char __user *user_buf,
DBF_EVENT(DBF_DEBUG, "/proc/dasd/statictics: '%s'\n", buffer);
/* check for valid verbs */
- for (str = buffer; isspace(*str); str++);
+ str = skip_spaces(buffer);
if (strncmp(str, "set", 3) == 0 && isspace(str[3])) {
/* 'set xxx' was given */
- for (str = str + 4; isspace(*str); str++);
+ str = skip_spaces(str + 4);
if (strcmp(str, "on") == 0) {
/* switch on statistics profiling */
dasd_profile_level = DASD_PROFILE_ON;
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index f76f4bd82b9f..9b43ae94beba 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -1005,7 +1005,7 @@ static int dcssblk_thaw(struct device *dev)
return 0;
}
-static struct dev_pm_ops dcssblk_pm_ops = {
+static const struct dev_pm_ops dcssblk_pm_ops = {
.freeze = dcssblk_freeze,
.thaw = dcssblk_thaw,
.restore = dcssblk_restore,
diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index 116d1b3eeb15..118de392af63 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -407,7 +407,7 @@ static int xpram_restore(struct device *dev)
return 0;
}
-static struct dev_pm_ops xpram_pm_ops = {
+static const struct dev_pm_ops xpram_pm_ops = {
.restore = xpram_restore,
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.