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-rw-r--r--drivers/s390/block/dasd.c134
-rw-r--r--drivers/s390/block/dasd_devmap.c101
-rw-r--r--drivers/s390/block/dasd_diag.c26
-rw-r--r--drivers/s390/block/dasd_eckd.c219
-rw-r--r--drivers/s390/block/dasd_erp.c18
-rw-r--r--drivers/s390/block/dasd_fba.c36
-rw-r--r--drivers/s390/block/dasd_genhd.c1
-rw-r--r--drivers/s390/block/dasd_int.h10
-rw-r--r--drivers/s390/block/dasd_ioctl.c59
-rw-r--r--drivers/s390/block/dcssblk.c37
-rw-r--r--drivers/s390/block/scm_blk.c38
-rw-r--r--drivers/s390/block/scm_blk.h2
-rw-r--r--drivers/s390/block/scm_blk_cluster.c6
-rw-r--r--drivers/s390/block/xpram.c24
14 files changed, 542 insertions, 169 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index d72a9216ee2..1eef0f58695 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -38,9 +38,6 @@
*/
#define DASD_CHANQ_MAX_SIZE 4
-#define DASD_SLEEPON_START_TAG (void *) 1
-#define DASD_SLEEPON_END_TAG (void *) 2
-
/*
* SECTION: exported variables of dasd.c
*/
@@ -701,10 +698,11 @@ static void dasd_profile_start(struct dasd_block *block,
}
spin_lock(&block->profile.lock);
- if (block->profile.data)
+ if (block->profile.data) {
block->profile.data->dasd_io_nr_req[counter]++;
if (rq_data_dir(req) == READ)
block->profile.data->dasd_read_nr_req[counter]++;
+ }
spin_unlock(&block->profile.lock);
/*
@@ -1787,11 +1785,11 @@ static void __dasd_device_process_ccw_queue(struct dasd_device *device,
list_for_each_safe(l, n, &device->ccw_queue) {
cqr = list_entry(l, struct dasd_ccw_req, devlist);
- /* Stop list processing at the first non-final request. */
+ /* Skip any non-final request. */
if (cqr->status == DASD_CQR_QUEUED ||
cqr->status == DASD_CQR_IN_IO ||
cqr->status == DASD_CQR_CLEAR_PENDING)
- break;
+ continue;
if (cqr->status == DASD_CQR_ERROR) {
__dasd_device_recovery(device, cqr);
}
@@ -2183,7 +2181,7 @@ static int _dasd_sleep_on(struct dasd_ccw_req *maincqr, int interruptible)
test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
(!dasd_eer_enabled(device))) {
cqr->status = DASD_CQR_FAILED;
- cqr->intrc = -EAGAIN;
+ cqr->intrc = -ENOLINK;
continue;
}
/* Don't try to start requests if device is stopped */
@@ -2395,6 +2393,12 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
rc = cqr->intrc;
else
rc = -EIO;
+
+ /* kick tasklets */
+ dasd_schedule_device_bh(device);
+ if (device->block)
+ dasd_schedule_block_bh(device->block);
+
return rc;
}
@@ -2402,8 +2406,7 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
* Cancels a request that was started with dasd_sleep_on_req.
* This is useful to timeout requests. The request will be
* terminated if it is currently in i/o.
- * Returns 1 if the request has been terminated.
- * 0 if there was no need to terminate the request (not started yet)
+ * Returns 0 if request termination was successful
* negative error code if termination failed
* Cancellation of a request is an asynchronous operation! The calling
* function has to wait until the request is properly returned via callback.
@@ -2440,7 +2443,6 @@ int dasd_cancel_req(struct dasd_ccw_req *cqr)
return rc;
}
-
/*
* SECTION: Operations of the dasd_block layer.
*/
@@ -2537,6 +2539,16 @@ static void __dasd_process_request_queue(struct dasd_block *block)
__blk_end_request_all(req, -EIO);
continue;
}
+ if (test_bit(DASD_FLAG_ABORTALL, &basedev->flags) &&
+ (basedev->features & DASD_FEATURE_FAILFAST ||
+ blk_noretry_request(req))) {
+ DBF_DEV_EVENT(DBF_ERR, basedev,
+ "Rejecting failfast request %p",
+ req);
+ blk_start_request(req);
+ __blk_end_request_all(req, -ETIMEDOUT);
+ continue;
+ }
cqr = basedev->discipline->build_cp(basedev, block, req);
if (IS_ERR(cqr)) {
if (PTR_ERR(cqr) == -EBUSY)
@@ -2575,8 +2587,10 @@ static void __dasd_process_request_queue(struct dasd_block *block)
*/
cqr->callback_data = (void *) req;
cqr->status = DASD_CQR_FILLED;
+ req->completion_data = cqr;
blk_start_request(req);
list_add_tail(&cqr->blocklist, &block->ccw_queue);
+ INIT_LIST_HEAD(&cqr->devlist);
dasd_profile_start(block, cqr, req);
}
}
@@ -2590,8 +2604,17 @@ static void __dasd_cleanup_cqr(struct dasd_ccw_req *cqr)
req = (struct request *) cqr->callback_data;
dasd_profile_end(cqr->block, cqr, req);
status = cqr->block->base->discipline->free_cp(cqr, req);
- if (status <= 0)
- error = status ? status : -EIO;
+ if (status < 0)
+ error = status;
+ else if (status == 0) {
+ if (cqr->intrc == -EPERM)
+ error = -EBADE;
+ else if (cqr->intrc == -ENOLINK ||
+ cqr->intrc == -ETIMEDOUT)
+ error = cqr->intrc;
+ else
+ error = -EIO;
+ }
__blk_end_request_all(req, error);
}
@@ -2692,6 +2715,7 @@ static void __dasd_block_start_head(struct dasd_block *block)
test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
(!dasd_eer_enabled(block->base))) {
cqr->status = DASD_CQR_FAILED;
+ cqr->intrc = -ENOLINK;
dasd_schedule_block_bh(block);
continue;
}
@@ -2864,6 +2888,82 @@ static void do_dasd_request(struct request_queue *queue)
}
/*
+ * Block timeout callback, called from the block layer
+ *
+ * request_queue lock is held on entry.
+ *
+ * Return values:
+ * BLK_EH_RESET_TIMER if the request should be left running
+ * BLK_EH_NOT_HANDLED if the request is handled or terminated
+ * by the driver.
+ */
+enum blk_eh_timer_return dasd_times_out(struct request *req)
+{
+ struct dasd_ccw_req *cqr = req->completion_data;
+ struct dasd_block *block = req->q->queuedata;
+ struct dasd_device *device;
+ int rc = 0;
+
+ if (!cqr)
+ return BLK_EH_NOT_HANDLED;
+
+ device = cqr->startdev ? cqr->startdev : block->base;
+ if (!device->blk_timeout)
+ return BLK_EH_RESET_TIMER;
+ DBF_DEV_EVENT(DBF_WARNING, device,
+ " dasd_times_out cqr %p status %x",
+ cqr, cqr->status);
+
+ spin_lock(&block->queue_lock);
+ spin_lock(get_ccwdev_lock(device->cdev));
+ cqr->retries = -1;
+ cqr->intrc = -ETIMEDOUT;
+ if (cqr->status >= DASD_CQR_QUEUED) {
+ spin_unlock(get_ccwdev_lock(device->cdev));
+ rc = dasd_cancel_req(cqr);
+ } else if (cqr->status == DASD_CQR_FILLED ||
+ cqr->status == DASD_CQR_NEED_ERP) {
+ cqr->status = DASD_CQR_TERMINATED;
+ spin_unlock(get_ccwdev_lock(device->cdev));
+ } else if (cqr->status == DASD_CQR_IN_ERP) {
+ struct dasd_ccw_req *searchcqr, *nextcqr, *tmpcqr;
+
+ list_for_each_entry_safe(searchcqr, nextcqr,
+ &block->ccw_queue, blocklist) {
+ tmpcqr = searchcqr;
+ while (tmpcqr->refers)
+ tmpcqr = tmpcqr->refers;
+ if (tmpcqr != cqr)
+ continue;
+ /* searchcqr is an ERP request for cqr */
+ searchcqr->retries = -1;
+ searchcqr->intrc = -ETIMEDOUT;
+ if (searchcqr->status >= DASD_CQR_QUEUED) {
+ spin_unlock(get_ccwdev_lock(device->cdev));
+ rc = dasd_cancel_req(searchcqr);
+ spin_lock(get_ccwdev_lock(device->cdev));
+ } else if ((searchcqr->status == DASD_CQR_FILLED) ||
+ (searchcqr->status == DASD_CQR_NEED_ERP)) {
+ searchcqr->status = DASD_CQR_TERMINATED;
+ rc = 0;
+ } else if (searchcqr->status == DASD_CQR_IN_ERP) {
+ /*
+ * Shouldn't happen; most recent ERP
+ * request is at the front of queue
+ */
+ continue;
+ }
+ break;
+ }
+ spin_unlock(get_ccwdev_lock(device->cdev));
+ }
+ dasd_schedule_block_bh(block);
+ spin_unlock(&block->queue_lock);
+
+ return rc ? BLK_EH_RESET_TIMER : BLK_EH_NOT_HANDLED;
+}
+
+/*
* Allocate and initialize request queue and default I/O scheduler.
*/
static int dasd_alloc_queue(struct dasd_block *block)
@@ -2879,12 +2979,12 @@ static int dasd_alloc_queue(struct dasd_block *block)
elevator_exit(block->request_queue->elevator);
block->request_queue->elevator = NULL;
+ mutex_lock(&block->request_queue->sysfs_lock);
rc = elevator_init(block->request_queue, "deadline");
- if (rc) {
+ if (rc)
blk_cleanup_queue(block->request_queue);
- return rc;
- }
- return 0;
+ mutex_unlock(&block->request_queue->sysfs_lock);
+ return rc;
}
/*
@@ -3286,7 +3386,7 @@ int dasd_generic_set_offline(struct ccw_device *cdev)
if (test_bit(DASD_FLAG_SAFE_OFFLINE_RUNNING, &device->flags)) {
/*
- * safe offline allready running
+ * safe offline already running
* could only be called by normal offline so safe_offline flag
* needs to be removed to run normal offline and kill all I/O
*/
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index a71bb8aaca1..2ead7e78c45 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -930,7 +930,7 @@ dasd_use_raw_store(struct device *dev, struct device_attribute *attr,
if (IS_ERR(devmap))
return PTR_ERR(devmap);
- if ((strict_strtoul(buf, 10, &val) != 0) || val > 1)
+ if ((kstrtoul(buf, 10, &val) != 0) || val > 1)
return -EINVAL;
spin_lock(&dasd_devmap_lock);
@@ -1225,7 +1225,7 @@ dasd_expires_store(struct device *dev, struct device_attribute *attr,
if (IS_ERR(device))
return -ENODEV;
- if ((strict_strtoul(buf, 10, &val) != 0) ||
+ if ((kstrtoul(buf, 10, &val) != 0) ||
(val > DASD_EXPIRES_MAX) || val == 0) {
dasd_put_device(device);
return -EINVAL;
@@ -1240,6 +1240,101 @@ dasd_expires_store(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(expires, 0644, dasd_expires_show, dasd_expires_store);
+static ssize_t
+dasd_retries_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_device *device;
+ int len;
+
+ device = dasd_device_from_cdev(to_ccwdev(dev));
+ if (IS_ERR(device))
+ return -ENODEV;
+ len = snprintf(buf, PAGE_SIZE, "%lu\n", device->default_retries);
+ dasd_put_device(device);
+ return len;
+}
+
+static ssize_t
+dasd_retries_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dasd_device *device;
+ unsigned long val;
+
+ device = dasd_device_from_cdev(to_ccwdev(dev));
+ if (IS_ERR(device))
+ return -ENODEV;
+
+ if ((kstrtoul(buf, 10, &val) != 0) ||
+ (val > DASD_RETRIES_MAX)) {
+ dasd_put_device(device);
+ return -EINVAL;
+ }
+
+ if (val)
+ device->default_retries = val;
+
+ dasd_put_device(device);
+ return count;
+}
+
+static DEVICE_ATTR(retries, 0644, dasd_retries_show, dasd_retries_store);
+
+static ssize_t
+dasd_timeout_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct dasd_device *device;
+ int len;
+
+ device = dasd_device_from_cdev(to_ccwdev(dev));
+ if (IS_ERR(device))
+ return -ENODEV;
+ len = snprintf(buf, PAGE_SIZE, "%lu\n", device->blk_timeout);
+ dasd_put_device(device);
+ return len;
+}
+
+static ssize_t
+dasd_timeout_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dasd_device *device;
+ struct request_queue *q;
+ unsigned long val, flags;
+
+ device = dasd_device_from_cdev(to_ccwdev(dev));
+ if (IS_ERR(device) || !device->block)
+ return -ENODEV;
+
+ if ((kstrtoul(buf, 10, &val) != 0) ||
+ val > UINT_MAX / HZ) {
+ dasd_put_device(device);
+ return -EINVAL;
+ }
+ q = device->block->request_queue;
+ if (!q) {
+ dasd_put_device(device);
+ return -ENODEV;
+ }
+ spin_lock_irqsave(&device->block->request_queue_lock, flags);
+ if (!val)
+ blk_queue_rq_timed_out(q, NULL);
+ else
+ blk_queue_rq_timed_out(q, dasd_times_out);
+
+ device->blk_timeout = val;
+
+ blk_queue_rq_timeout(q, device->blk_timeout * HZ);
+ spin_unlock_irqrestore(&device->block->request_queue_lock, flags);
+
+ dasd_put_device(device);
+ return count;
+}
+
+static DEVICE_ATTR(timeout, 0644,
+ dasd_timeout_show, dasd_timeout_store);
+
static ssize_t dasd_reservation_policy_show(struct device *dev,
struct device_attribute *attr,
char *buf)
@@ -1350,6 +1445,8 @@ static struct attribute * dasd_attrs[] = {
&dev_attr_erplog.attr,
&dev_attr_failfast.attr,
&dev_attr_expires.attr,
+ &dev_attr_retries.attr,
+ &dev_attr_timeout.attr,
&dev_attr_reservation_policy.attr,
&dev_attr_last_known_reservation_state.attr,
&dev_attr_safe_offline.attr,
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index cc060335852..c062f1620c5 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -359,6 +359,7 @@ dasd_diag_check_device(struct dasd_device *device)
}
device->default_expires = DIAG_TIMEOUT;
+ device->default_retries = DIAG_MAX_RETRIES;
/* Figure out position of label block */
switch (private->rdc_data.vdev_class) {
@@ -503,7 +504,7 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev,
struct dasd_diag_req *dreq;
struct dasd_diag_bio *dbio;
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
char *dst;
unsigned int count, datasize;
sector_t recid, first_rec, last_rec;
@@ -524,10 +525,10 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev,
/* Check struct bio and count the number of blocks for the request. */
count = 0;
rq_for_each_segment(bv, req, iter) {
- if (bv->bv_len & (blksize - 1))
+ if (bv.bv_len & (blksize - 1))
/* Fba can only do full blocks. */
return ERR_PTR(-EINVAL);
- count += bv->bv_len >> (block->s2b_shift + 9);
+ count += bv.bv_len >> (block->s2b_shift + 9);
}
/* Paranoia. */
if (count != last_rec - first_rec + 1)
@@ -544,8 +545,8 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev,
dbio = dreq->bio;
recid = first_rec;
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
- for (off = 0; off < bv->bv_len; off += blksize) {
+ dst = page_address(bv.bv_page) + bv.bv_offset;
+ for (off = 0; off < bv.bv_len; off += blksize) {
memset(dbio, 0, sizeof (struct dasd_diag_bio));
dbio->type = rw_cmd;
dbio->block_number = recid + 1;
@@ -555,7 +556,7 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev,
recid++;
}
}
- cqr->retries = DIAG_MAX_RETRIES;
+ cqr->retries = memdev->default_retries;
cqr->buildclk = get_tod_clock();
if (blk_noretry_request(req) ||
block->base->features & DASD_FEATURE_FAILFAST)
@@ -582,7 +583,10 @@ dasd_diag_free_cp(struct dasd_ccw_req *cqr, struct request *req)
static void dasd_diag_handle_terminated_request(struct dasd_ccw_req *cqr)
{
- cqr->status = DASD_CQR_FILLED;
+ if (cqr->retries < 0)
+ cqr->status = DASD_CQR_FAILED;
+ else
+ cqr->status = DASD_CQR_FILLED;
};
/* Fill in IOCTL data for device. */
@@ -641,8 +645,8 @@ dasd_diag_init(void)
}
ASCEBC(dasd_diag_discipline.ebcname, 4);
- service_subclass_irq_register();
- register_external_interrupt(0x2603, dasd_ext_handler);
+ irq_subclass_register(IRQ_SUBCLASS_SERVICE_SIGNAL);
+ register_external_irq(EXT_IRQ_CP_SERVICE, dasd_ext_handler);
dasd_diag_discipline_pointer = &dasd_diag_discipline;
return 0;
}
@@ -650,8 +654,8 @@ dasd_diag_init(void)
static void __exit
dasd_diag_cleanup(void)
{
- unregister_external_interrupt(0x2603, dasd_ext_handler);
- service_subclass_irq_unregister();
+ unregister_external_irq(EXT_IRQ_CP_SERVICE, dasd_ext_handler);
+ irq_subclass_unregister(IRQ_SUBCLASS_SERVICE_SIGNAL);
dasd_diag_discipline_pointer = NULL;
}
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 6a44b27623e..2e8e0755070 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -85,6 +85,8 @@ MODULE_DEVICE_TABLE(ccw, dasd_eckd_ids);
static struct ccw_driver dasd_eckd_driver; /* see below */
+static void *rawpadpage;
+
#define INIT_CQR_OK 0
#define INIT_CQR_UNFORMATTED 1
#define INIT_CQR_ERROR 2
@@ -1682,6 +1684,9 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
/* set default timeout */
device->default_expires = DASD_EXPIRES;
+ /* set default retry count */
+ device->default_retries = DASD_RETRIES;
+
if (private->gneq) {
value = 1;
for (i = 0; i < private->gneq->timeout.value; i++)
@@ -2072,6 +2077,7 @@ dasd_eckd_build_format(struct dasd_device *base,
int intensity = 0;
int r0_perm;
int nr_tracks;
+ int use_prefix;
startdev = dasd_alias_get_start_dev(base);
if (!startdev)
@@ -2101,28 +2107,46 @@ dasd_eckd_build_format(struct dasd_device *base,
intensity = fdata->intensity;
}
+ use_prefix = base_priv->features.feature[8] & 0x01;
+
switch (intensity) {
case 0x00: /* Normal format */
case 0x08: /* Normal format, use cdl. */
cplength = 2 + (rpt*nr_tracks);
- datasize = sizeof(struct PFX_eckd_data) +
- sizeof(struct LO_eckd_data) +
- rpt * nr_tracks * sizeof(struct eckd_count);
+ if (use_prefix)
+ datasize = sizeof(struct PFX_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ rpt * nr_tracks * sizeof(struct eckd_count);
+ else
+ datasize = sizeof(struct DE_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ rpt * nr_tracks * sizeof(struct eckd_count);
break;
case 0x01: /* Write record zero and format track. */
case 0x09: /* Write record zero and format track, use cdl. */
cplength = 2 + rpt * nr_tracks;
- datasize = sizeof(struct PFX_eckd_data) +
- sizeof(struct LO_eckd_data) +
- sizeof(struct eckd_count) +
- rpt * nr_tracks * sizeof(struct eckd_count);
+ if (use_prefix)
+ datasize = sizeof(struct PFX_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ sizeof(struct eckd_count) +
+ rpt * nr_tracks * sizeof(struct eckd_count);
+ else
+ datasize = sizeof(struct DE_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ sizeof(struct eckd_count) +
+ rpt * nr_tracks * sizeof(struct eckd_count);
break;
case 0x04: /* Invalidate track. */
case 0x0c: /* Invalidate track, use cdl. */
cplength = 3;
- datasize = sizeof(struct PFX_eckd_data) +
- sizeof(struct LO_eckd_data) +
- sizeof(struct eckd_count);
+ if (use_prefix)
+ datasize = sizeof(struct PFX_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ sizeof(struct eckd_count);
+ else
+ datasize = sizeof(struct DE_eckd_data) +
+ sizeof(struct LO_eckd_data) +
+ sizeof(struct eckd_count);
break;
default:
dev_warn(&startdev->cdev->dev,
@@ -2142,14 +2166,25 @@ dasd_eckd_build_format(struct dasd_device *base,
switch (intensity & ~0x08) {
case 0x00: /* Normal format. */
- prefix(ccw++, (struct PFX_eckd_data *) data,
- fdata->start_unit, fdata->stop_unit,
- DASD_ECKD_CCW_WRITE_CKD, base, startdev);
- /* grant subsystem permission to format R0 */
- if (r0_perm)
- ((struct PFX_eckd_data *)data)
- ->define_extent.ga_extended |= 0x04;
- data += sizeof(struct PFX_eckd_data);
+ if (use_prefix) {
+ prefix(ccw++, (struct PFX_eckd_data *) data,
+ fdata->start_unit, fdata->stop_unit,
+ DASD_ECKD_CCW_WRITE_CKD, base, startdev);
+ /* grant subsystem permission to format R0 */
+ if (r0_perm)
+ ((struct PFX_eckd_data *)data)
+ ->define_extent.ga_extended |= 0x04;
+ data += sizeof(struct PFX_eckd_data);
+ } else {
+ define_extent(ccw++, (struct DE_eckd_data *) data,
+ fdata->start_unit, fdata->stop_unit,
+ DASD_ECKD_CCW_WRITE_CKD, startdev);
+ /* grant subsystem permission to format R0 */
+ if (r0_perm)
+ ((struct DE_eckd_data *) data)
+ ->ga_extended |= 0x04;
+ data += sizeof(struct DE_eckd_data);
+ }
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, (struct LO_eckd_data *) data,
fdata->start_unit, 0, rpt*nr_tracks,
@@ -2158,11 +2193,18 @@ dasd_eckd_build_format(struct dasd_device *base,
data += sizeof(struct LO_eckd_data);
break;
case 0x01: /* Write record zero + format track. */
- prefix(ccw++, (struct PFX_eckd_data *) data,
- fdata->start_unit, fdata->stop_unit,
- DASD_ECKD_CCW_WRITE_RECORD_ZERO,
- base, startdev);
- data += sizeof(struct PFX_eckd_data);
+ if (use_prefix) {
+ prefix(ccw++, (struct PFX_eckd_data *) data,
+ fdata->start_unit, fdata->stop_unit,
+ DASD_ECKD_CCW_WRITE_RECORD_ZERO,
+ base, startdev);
+ data += sizeof(struct PFX_eckd_data);
+ } else {
+ define_extent(ccw++, (struct DE_eckd_data *) data,
+ fdata->start_unit, fdata->stop_unit,
+ DASD_ECKD_CCW_WRITE_RECORD_ZERO, startdev);
+ data += sizeof(struct DE_eckd_data);
+ }
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, (struct LO_eckd_data *) data,
fdata->start_unit, 0, rpt * nr_tracks + 1,
@@ -2171,10 +2213,17 @@ dasd_eckd_build_format(struct dasd_device *base,
data += sizeof(struct LO_eckd_data);
break;
case 0x04: /* Invalidate track. */
- prefix(ccw++, (struct PFX_eckd_data *) data,
- fdata->start_unit, fdata->stop_unit,
- DASD_ECKD_CCW_WRITE_CKD, base, startdev);
- data += sizeof(struct PFX_eckd_data);
+ if (use_prefix) {
+ prefix(ccw++, (struct PFX_eckd_data *) data,
+ fdata->start_unit, fdata->stop_unit,
+ DASD_ECKD_CCW_WRITE_CKD, base, startdev);
+ data += sizeof(struct PFX_eckd_data);
+ } else {
+ define_extent(ccw++, (struct DE_eckd_data *) data,
+ fdata->start_unit, fdata->stop_unit,
+ DASD_ECKD_CCW_WRITE_CKD, startdev);
+ data += sizeof(struct DE_eckd_data);
+ }
ccw[-1].flags |= CCW_FLAG_CC;
locate_record(ccw++, (struct LO_eckd_data *) data,
fdata->start_unit, 0, 1,
@@ -2378,6 +2427,10 @@ sleep:
static void dasd_eckd_handle_terminated_request(struct dasd_ccw_req *cqr)
{
+ if (cqr->retries < 0) {
+ cqr->status = DASD_CQR_FAILED;
+ return;
+ }
cqr->status = DASD_CQR_FILLED;
if (cqr->block && (cqr->startdev != cqr->block->base)) {
dasd_eckd_reset_ccw_to_base_io(cqr);
@@ -2498,7 +2551,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single(
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
char *dst;
unsigned int off;
int count, cidaw, cplength, datasize;
@@ -2520,13 +2573,13 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single(
count = 0;
cidaw = 0;
rq_for_each_segment(bv, req, iter) {
- if (bv->bv_len & (blksize - 1))
+ if (bv.bv_len & (blksize - 1))
/* Eckd can only do full blocks. */
return ERR_PTR(-EINVAL);
- count += bv->bv_len >> (block->s2b_shift + 9);
+ count += bv.bv_len >> (block->s2b_shift + 9);
#if defined(CONFIG_64BIT)
- if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
- cidaw += bv->bv_len >> (block->s2b_shift + 9);
+ if (idal_is_needed (page_address(bv.bv_page), bv.bv_len))
+ cidaw += bv.bv_len >> (block->s2b_shift + 9);
#endif
}
/* Paranoia. */
@@ -2597,16 +2650,16 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single(
last_rec - recid + 1, cmd, basedev, blksize);
}
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
+ dst = page_address(bv.bv_page) + bv.bv_offset;
if (dasd_page_cache) {
char *copy = kmem_cache_alloc(dasd_page_cache,
GFP_DMA | __GFP_NOWARN);
if (copy && rq_data_dir(req) == WRITE)
- memcpy(copy + bv->bv_offset, dst, bv->bv_len);
+ memcpy(copy + bv.bv_offset, dst, bv.bv_len);
if (copy)
- dst = copy + bv->bv_offset;
+ dst = copy + bv.bv_offset;
}
- for (off = 0; off < bv->bv_len; off += blksize) {
+ for (off = 0; off < bv.bv_len; off += blksize) {
sector_t trkid = recid;
unsigned int recoffs = sector_div(trkid, blk_per_trk);
rcmd = cmd;
@@ -2659,7 +2712,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single(
cqr->block = block;
cqr->expires = startdev->default_expires * HZ; /* default 5 minutes */
cqr->lpm = startdev->path_data.ppm;
- cqr->retries = 256;
+ cqr->retries = startdev->default_retries;
cqr->buildclk = get_tod_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
@@ -2682,7 +2735,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
char *dst, *idaw_dst;
unsigned int cidaw, cplength, datasize;
unsigned int tlf;
@@ -2760,8 +2813,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
idaw_dst = NULL;
idaw_len = 0;
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
- seg_len = bv->bv_len;
+ dst = page_address(bv.bv_page) + bv.bv_offset;
+ seg_len = bv.bv_len;
while (seg_len) {
if (new_track) {
trkid = recid;
@@ -2834,7 +2887,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
cqr->block = block;
cqr->expires = startdev->default_expires * HZ; /* default 5 minutes */
cqr->lpm = startdev->path_data.ppm;
- cqr->retries = 256;
+ cqr->retries = startdev->default_retries;
cqr->buildclk = get_tod_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
@@ -2968,7 +3021,7 @@ static int prepare_itcw(struct itcw *itcw,
dcw = itcw_add_dcw(itcw, pfx_cmd, 0,
&pfxdata, sizeof(pfxdata), total_data_size);
- return IS_ERR(dcw) ? PTR_ERR(dcw) : 0;
+ return PTR_RET(dcw);
}
static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
@@ -2986,7 +3039,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
{
struct dasd_ccw_req *cqr;
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
char *dst;
unsigned int trkcount, ctidaw;
unsigned char cmd;
@@ -3072,8 +3125,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
new_track = 1;
recid = first_rec;
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
- seg_len = bv->bv_len;
+ dst = page_address(bv.bv_page) + bv.bv_offset;
+ seg_len = bv.bv_len;
while (seg_len) {
if (new_track) {
trkid = recid;
@@ -3105,9 +3158,9 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
}
} else {
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
+ dst = page_address(bv.bv_page) + bv.bv_offset;
last_tidaw = itcw_add_tidaw(itcw, 0x00,
- dst, bv->bv_len);
+ dst, bv.bv_len);
if (IS_ERR(last_tidaw)) {
ret = -EINVAL;
goto out_error;
@@ -3127,7 +3180,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
cqr->block = block;
cqr->expires = startdev->default_expires * HZ; /* default 5 minutes */
cqr->lpm = startdev->path_data.ppm;
- cqr->retries = 256;
+ cqr->retries = startdev->default_retries;
cqr->buildclk = get_tod_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
@@ -3171,6 +3224,8 @@ static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
fcx_multitrack = private->features.feature[40] & 0x20;
data_size = blk_rq_bytes(req);
+ if (data_size % blksize)
+ return ERR_PTR(-EINVAL);
/* tpm write request add CBC data on each track boundary */
if (rq_data_dir(req) == WRITE)
data_size += (last_trk - first_trk) * 4;
@@ -3223,25 +3278,33 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
char *dst;
unsigned char cmd;
unsigned int trkcount;
unsigned int seg_len, len_to_track_end;
unsigned int first_offs;
unsigned int cidaw, cplength, datasize;
- sector_t first_trk, last_trk;
+ sector_t first_trk, last_trk, sectors;
+ sector_t start_padding_sectors, end_sector_offset, end_padding_sectors;
unsigned int pfx_datasize;
/*
* raw track access needs to be mutiple of 64k and on 64k boundary
+ * For read requests we can fix an incorrect alignment by padding
+ * the request with dummy pages.
*/
- if ((blk_rq_pos(req) % DASD_RAW_SECTORS_PER_TRACK) != 0) {
- cqr = ERR_PTR(-EINVAL);
- goto out;
- }
- if (((blk_rq_pos(req) + blk_rq_sectors(req)) %
- DASD_RAW_SECTORS_PER_TRACK) != 0) {
+ start_padding_sectors = blk_rq_pos(req) % DASD_RAW_SECTORS_PER_TRACK;
+ end_sector_offset = (blk_rq_pos(req) + blk_rq_sectors(req)) %
+ DASD_RAW_SECTORS_PER_TRACK;
+ end_padding_sectors = (DASD_RAW_SECTORS_PER_TRACK - end_sector_offset) %
+ DASD_RAW_SECTORS_PER_TRACK;
+ basedev = block->base;
+ if ((start_padding_sectors || end_padding_sectors) &&
+ (rq_data_dir(req) == WRITE)) {
+ DBF_DEV_EVENT(DBF_ERR, basedev,
+ "raw write not track aligned (%lu,%lu) req %p",
+ start_padding_sectors, end_padding_sectors, req);
cqr = ERR_PTR(-EINVAL);
goto out;
}
@@ -3251,7 +3314,6 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
DASD_RAW_SECTORS_PER_TRACK;
trkcount = last_trk - first_trk + 1;
first_offs = 0;
- basedev = block->base;
if (rq_data_dir(req) == READ)
cmd = DASD_ECKD_CCW_READ_TRACK;
@@ -3300,12 +3362,26 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
}
idaws = (unsigned long *)(cqr->data + pfx_datasize);
-
len_to_track_end = 0;
-
+ if (start_padding_sectors) {
+ ccw[-1].flags |= CCW_FLAG_CC;
+ ccw->cmd_code = cmd;
+ /* maximum 3390 track size */
+ ccw->count = 57326;
+ /* 64k map to one track */
+ len_to_track_end = 65536 - start_padding_sectors * 512;
+ ccw->cda = (__u32)(addr_t)idaws;
+ ccw->flags |= CCW_FLAG_IDA;
+ ccw->flags |= CCW_FLAG_SLI;
+ ccw++;
+ for (sectors = 0; sectors < start_padding_sectors; sectors += 8)
+ idaws = idal_create_words(idaws, rawpadpage, PAGE_SIZE);
+ }
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
- seg_len = bv->bv_len;
+ dst = page_address(bv.bv_page) + bv.bv_offset;
+ seg_len = bv.bv_len;
+ if (cmd == DASD_ECKD_CCW_READ_TRACK)
+ memset(dst, 0, seg_len);
if (!len_to_track_end) {
ccw[-1].flags |= CCW_FLAG_CC;
ccw->cmd_code = cmd;
@@ -3321,7 +3397,8 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
len_to_track_end -= seg_len;
idaws = idal_create_words(idaws, dst, seg_len);
}
-
+ for (sectors = 0; sectors < end_padding_sectors; sectors += 8)
+ idaws = idal_create_words(idaws, rawpadpage, PAGE_SIZE);
if (blk_noretry_request(req) ||
block->base->features & DASD_FEATURE_FAILFAST)
set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
@@ -3330,7 +3407,7 @@ static struct dasd_ccw_req *dasd_raw_build_cp(struct dasd_device *startdev,
cqr->block = block;
cqr->expires = startdev->default_expires * HZ;
cqr->lpm = startdev->path_data.ppm;
- cqr->retries = 256;
+ cqr->retries = startdev->default_retries;
cqr->buildclk = get_tod_clock();
cqr->status = DASD_CQR_FILLED;
@@ -3347,7 +3424,7 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req)
struct dasd_eckd_private *private;
struct ccw1 *ccw;
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
char *dst, *cda;
unsigned int blksize, blk_per_trk, off;
sector_t recid;
@@ -3365,8 +3442,8 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req)
if (private->uses_cdl == 0 || recid > 2*blk_per_trk)
ccw++;
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
- for (off = 0; off < bv->bv_len; off += blksize) {
+ dst = page_address(bv.bv_page) + bv.bv_offset;
+ for (off = 0; off < bv.bv_len; off += blksize) {
/* Skip locate record. */
if (private->uses_cdl && recid <= 2*blk_per_trk)
ccw++;
@@ -3377,7 +3454,7 @@ dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req)
cda = (char *)((addr_t) ccw->cda);
if (dst != cda) {
if (rq_data_dir(req) == READ)
- memcpy(dst, cda, bv->bv_len);
+ memcpy(dst, cda, bv.bv_len);
kmem_cache_free(dasd_page_cache,
(void *)((addr_t)cda & PAGE_MASK));
}
@@ -4472,12 +4549,19 @@ dasd_eckd_init(void)
kfree(dasd_reserve_req);
return -ENOMEM;
}
+ rawpadpage = (void *)__get_free_page(GFP_KERNEL);
+ if (!rawpadpage) {
+ kfree(path_verification_worker);
+ kfree(dasd_reserve_req);
+ return -ENOMEM;
+ }
ret = ccw_driver_register(&dasd_eckd_driver);
if (!ret)
wait_for_device_probe();
else {
kfree(path_verification_worker);
kfree(dasd_reserve_req);
+ free_page((unsigned long)rawpadpage);
}
return ret;
}
@@ -4488,6 +4572,7 @@ dasd_eckd_cleanup(void)
ccw_driver_unregister(&dasd_eckd_driver);
kfree(path_verification_worker);
kfree(dasd_reserve_req);
+ free_page((unsigned long)rawpadpage);
}
module_init(dasd_eckd_init);
diff --git a/drivers/s390/block/dasd_erp.c b/drivers/s390/block/dasd_erp.c
index 3250cb471f7..e1e88486b2b 100644
--- a/drivers/s390/block/dasd_erp.c
+++ b/drivers/s390/block/dasd_erp.c
@@ -124,10 +124,15 @@ dasd_default_erp_action(struct dasd_ccw_req *cqr)
struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *cqr)
{
int success;
+ unsigned long long startclk, stopclk;
+ struct dasd_device *startdev;
BUG_ON(cqr->refers == NULL || cqr->function == NULL);
success = cqr->status == DASD_CQR_DONE;
+ startclk = cqr->startclk;
+ stopclk = cqr->stopclk;
+ startdev = cqr->startdev;
/* free all ERPs - but NOT the original cqr */
while (cqr->refers != NULL) {
@@ -142,6 +147,9 @@ struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *cqr)
}
/* set corresponding status to original cqr */
+ cqr->startclk = startclk;
+ cqr->stopclk = stopclk;
+ cqr->startdev = startdev;
if (success)
cqr->status = DASD_CQR_DONE;
else {
@@ -159,6 +167,16 @@ dasd_log_sense(struct dasd_ccw_req *cqr, struct irb *irb)
struct dasd_device *device;
device = cqr->startdev;
+ if (cqr->intrc == -ETIMEDOUT) {
+ dev_err(&device->cdev->dev,
+ "A timeout error occurred for cqr %p", cqr);
+ return;
+ }
+ if (cqr->intrc == -ENOLINK) {
+ dev_err(&device->cdev->dev,
+ "A transport error occurred for cqr %p", cqr);
+ return;
+ }
/* dump sense data */
if (device->discipline && device->discipline->dump_sense)
device->discipline->dump_sense(device, cqr, irb);
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 4dd0e2f6047..2c8e68bf9a1 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -29,6 +29,8 @@
#endif /* PRINTK_HEADER */
#define PRINTK_HEADER "dasd(fba):"
+#define FBA_DEFAULT_RETRIES 32
+
#define DASD_FBA_CCW_WRITE 0x41
#define DASD_FBA_CCW_READ 0x42
#define DASD_FBA_CCW_LOCATE 0x43
@@ -167,6 +169,7 @@ dasd_fba_check_characteristics(struct dasd_device *device)
}
device->default_expires = DASD_EXPIRES;
+ device->default_retries = FBA_DEFAULT_RETRIES;
device->path_data.opm = LPM_ANYPATH;
readonly = dasd_device_is_ro(device);
@@ -257,7 +260,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
char *dst;
int count, cidaw, cplength, datasize;
sector_t recid, first_rec, last_rec;
@@ -280,13 +283,13 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
count = 0;
cidaw = 0;
rq_for_each_segment(bv, req, iter) {
- if (bv->bv_len & (blksize - 1))
+ if (bv.bv_len & (blksize - 1))
/* Fba can only do full blocks. */
return ERR_PTR(-EINVAL);
- count += bv->bv_len >> (block->s2b_shift + 9);
+ count += bv.bv_len >> (block->s2b_shift + 9);
#if defined(CONFIG_64BIT)
- if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
- cidaw += bv->bv_len / blksize;
+ if (idal_is_needed (page_address(bv.bv_page), bv.bv_len))
+ cidaw += bv.bv_len / blksize;
#endif
}
/* Paranoia. */
@@ -323,16 +326,16 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
}
recid = first_rec;
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
+ dst = page_address(bv.bv_page) + bv.bv_offset;
if (dasd_page_cache) {
char *copy = kmem_cache_alloc(dasd_page_cache,
GFP_DMA | __GFP_NOWARN);
if (copy && rq_data_dir(req) == WRITE)
- memcpy(copy + bv->bv_offset, dst, bv->bv_len);
+ memcpy(copy + bv.bv_offset, dst, bv.bv_len);
if (copy)
- dst = copy + bv->bv_offset;
+ dst = copy + bv.bv_offset;
}
- for (off = 0; off < bv->bv_len; off += blksize) {
+ for (off = 0; off < bv.bv_len; off += blksize) {
/* Locate record for stupid devices. */
if (private->rdc_data.mode.bits.data_chain == 0) {
ccw[-1].flags |= CCW_FLAG_CC;
@@ -369,7 +372,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
cqr->memdev = memdev;
cqr->block = block;
cqr->expires = memdev->default_expires * HZ; /* default 5 minutes */
- cqr->retries = 32;
+ cqr->retries = memdev->default_retries;
cqr->buildclk = get_tod_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
@@ -381,7 +384,7 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req)
struct dasd_fba_private *private;
struct ccw1 *ccw;
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
char *dst, *cda;
unsigned int blksize, off;
int status;
@@ -396,8 +399,8 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req)
if (private->rdc_data.mode.bits.data_chain != 0)
ccw++;
rq_for_each_segment(bv, req, iter) {
- dst = page_address(bv->bv_page) + bv->bv_offset;
- for (off = 0; off < bv->bv_len; off += blksize) {
+ dst = page_address(bv.bv_page) + bv.bv_offset;
+ for (off = 0; off < bv.bv_len; off += blksize) {
/* Skip locate record. */
if (private->rdc_data.mode.bits.data_chain == 0)
ccw++;
@@ -408,7 +411,7 @@ dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req)
cda = (char *)((addr_t) ccw->cda);
if (dst != cda) {
if (rq_data_dir(req) == READ)
- memcpy(dst, cda, bv->bv_len);
+ memcpy(dst, cda, bv.bv_len);
kmem_cache_free(dasd_page_cache,
(void *)((addr_t)cda & PAGE_MASK));
}
@@ -425,7 +428,10 @@ out:
static void dasd_fba_handle_terminated_request(struct dasd_ccw_req *cqr)
{
- cqr->status = DASD_CQR_FILLED;
+ if (cqr->retries < 0)
+ cqr->status = DASD_CQR_FAILED;
+ else
+ cqr->status = DASD_CQR_FILLED;
};
static int
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index f64921756ad..f224d59c4b6 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -87,7 +87,6 @@ void dasd_gendisk_free(struct dasd_block *block)
{
if (block->gdp) {
del_gendisk(block->gdp);
- block->gdp->queue = NULL;
block->gdp->private_data = NULL;
put_disk(block->gdp);
block->gdp = NULL;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 0785bd9bd5b..690001af0d0 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -224,6 +224,8 @@ struct dasd_ccw_req {
/* default expiration time*/
#define DASD_EXPIRES 300
#define DASD_EXPIRES_MAX 40000000
+#define DASD_RETRIES 256
+#define DASD_RETRIES_MAX 32768
/* per dasd_ccw_req flags */
#define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */
@@ -466,6 +468,9 @@ struct dasd_device {
/* default expiration time in s */
unsigned long default_expires;
+ unsigned long default_retries;
+
+ unsigned long blk_timeout;
struct dentry *debugfs_dentry;
struct dasd_profile profile;
@@ -519,7 +524,10 @@ struct dasd_block {
#define DASD_FLAG_SUSPENDED 9 /* The device was suspended */
#define DASD_FLAG_SAFE_OFFLINE 10 /* safe offline processing requested*/
#define DASD_FLAG_SAFE_OFFLINE_RUNNING 11 /* safe offline running */
+#define DASD_FLAG_ABORTALL 12 /* Abort all noretry requests */
+#define DASD_SLEEPON_START_TAG ((void *) 1)
+#define DASD_SLEEPON_END_TAG ((void *) 2)
void dasd_put_device_wake(struct dasd_device *);
@@ -660,6 +668,8 @@ void dasd_free_device(struct dasd_device *);
struct dasd_block *dasd_alloc_block(void);
void dasd_free_block(struct dasd_block *);
+enum blk_eh_timer_return dasd_times_out(struct request *req);
+
void dasd_enable_device(struct dasd_device *);
void dasd_set_target_state(struct dasd_device *, int);
void dasd_kick_device(struct dasd_device *);
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index 8be1b51e931..25a0f2f8b0b 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -141,6 +141,59 @@ static int dasd_ioctl_resume(struct dasd_block *block)
}
/*
+ * Abort all failfast I/O on a device.
+ */
+static int dasd_ioctl_abortio(struct dasd_block *block)
+{
+ unsigned long flags;
+ struct dasd_device *base;
+ struct dasd_ccw_req *cqr, *n;
+
+ base = block->base;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (test_and_set_bit(DASD_FLAG_ABORTALL, &base->flags))
+ return 0;
+ DBF_DEV_EVENT(DBF_NOTICE, base, "%s", "abortall flag set");
+
+ spin_lock_irqsave(&block->request_queue_lock, flags);
+ spin_lock(&block->queue_lock);
+ list_for_each_entry_safe(cqr, n, &block->ccw_queue, blocklist) {
+ if (test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags) &&
+ cqr->callback_data &&
+ cqr->callback_data != DASD_SLEEPON_START_TAG &&
+ cqr->callback_data != DASD_SLEEPON_END_TAG) {
+ spin_unlock(&block->queue_lock);
+ blk_abort_request(cqr->callback_data);
+ spin_lock(&block->queue_lock);
+ }
+ }
+ spin_unlock(&block->queue_lock);
+ spin_unlock_irqrestore(&block->request_queue_lock, flags);
+
+ dasd_schedule_block_bh(block);
+ return 0;
+}
+
+/*
+ * Allow I/O on a device
+ */
+static int dasd_ioctl_allowio(struct dasd_block *block)
+{
+ struct dasd_device *base;
+
+ base = block->base;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (test_and_clear_bit(DASD_FLAG_ABORTALL, &base->flags))
+ DBF_DEV_EVENT(DBF_NOTICE, base, "%s", "abortall flag unset");
+
+ return 0;
+}
+
+/*
* performs formatting of _device_ according to _fdata_
* Note: The discipline's format_function is assumed to deliver formatting
* commands to format multiple units of the device. In terms of the ECKD
@@ -458,6 +511,12 @@ int dasd_ioctl(struct block_device *bdev, fmode_t mode,
case BIODASDRESUME:
rc = dasd_ioctl_resume(block);
break;
+ case BIODASDABORTIO:
+ rc = dasd_ioctl_abortio(block);
+ break;
+ case BIODASDALLOWIO:
+ rc = dasd_ioctl_allowio(block);
+ break;
case BIODASDFMT:
rc = dasd_ioctl_format(bdev, argp);
break;
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 6eca019bcf3..0f471750327 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -304,12 +304,6 @@ dcssblk_load_segment(char *name, struct segment_info **seg_info)
return rc;
}
-static void dcssblk_unregister_callback(struct device *dev)
-{
- device_unregister(dev);
- put_device(dev);
-}
-
/*
* device attribute for switching shared/nonshared (exclusive)
* operation (show + store)
@@ -397,7 +391,13 @@ removeseg:
blk_cleanup_queue(dev_info->dcssblk_queue);
dev_info->gd->queue = NULL;
put_disk(dev_info->gd);
- rc = device_schedule_callback(dev, dcssblk_unregister_callback);
+ up_write(&dcssblk_devices_sem);
+
+ if (device_remove_file_self(dev, attr)) {
+ device_unregister(dev);
+ put_device(dev);
+ }
+ return rc;
out:
up_write(&dcssblk_devices_sem);
return rc;
@@ -593,7 +593,7 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
dev_info->start = dcssblk_find_lowest_addr(dev_info);
dev_info->end = dcssblk_find_highest_addr(dev_info);
- dev_set_name(&dev_info->dev, dev_info->segment_name);
+ dev_set_name(&dev_info->dev, "%s", dev_info->segment_name);
dev_info->dev.release = dcssblk_release_segment;
dev_info->dev.groups = dcssblk_dev_attr_groups;
INIT_LIST_HEAD(&dev_info->lh);
@@ -808,18 +808,19 @@ static void
dcssblk_make_request(struct request_queue *q, struct bio *bio)
{
struct dcssblk_dev_info *dev_info;
- struct bio_vec *bvec;
+ struct bio_vec bvec;
+ struct bvec_iter iter;
unsigned long index;
unsigned long page_addr;
unsigned long source_addr;
unsigned long bytes_done;
- int i;
bytes_done = 0;
dev_info = bio->bi_bdev->bd_disk->private_data;
if (dev_info == NULL)
goto fail;
- if ((bio->bi_sector & 7) != 0 || (bio->bi_size & 4095) != 0)
+ if ((bio->bi_iter.bi_sector & 7) != 0 ||
+ (bio->bi_iter.bi_size & 4095) != 0)
/* Request is not page-aligned. */
goto fail;
if (bio_end_sector(bio) > get_capacity(bio->bi_bdev->bd_disk)) {
@@ -842,22 +843,22 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio)
}
}
- index = (bio->bi_sector >> 3);
- bio_for_each_segment(bvec, bio, i) {
+ index = (bio->bi_iter.bi_sector >> 3);
+ bio_for_each_segment(bvec, bio, iter) {
page_addr = (unsigned long)
- page_address(bvec->bv_page) + bvec->bv_offset;
+ page_address(bvec.bv_page) + bvec.bv_offset;
source_addr = dev_info->start + (index<<12) + bytes_done;
- if (unlikely((page_addr & 4095) != 0) || (bvec->bv_len & 4095) != 0)
+ if (unlikely((page_addr & 4095) != 0) || (bvec.bv_len & 4095) != 0)
// More paranoia.
goto fail;
if (bio_data_dir(bio) == READ) {
memcpy((void*)page_addr, (void*)source_addr,
- bvec->bv_len);
+ bvec.bv_len);
} else {
memcpy((void*)source_addr, (void*)page_addr,
- bvec->bv_len);
+ bvec.bv_len);
}
- bytes_done += bvec->bv_len;
+ bytes_done += bvec.bv_len;
}
bio_endio(bio, 0);
return;
diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c
index 5d73e6e49af..76bed1743db 100644
--- a/drivers/s390/block/scm_blk.c
+++ b/drivers/s390/block/scm_blk.c
@@ -118,22 +118,6 @@ static void scm_request_done(struct scm_request *scmrq)
spin_unlock_irqrestore(&list_lock, flags);
}
-static int scm_open(struct block_device *blkdev, fmode_t mode)
-{
- return scm_get_ref();
-}
-
-static void scm_release(struct gendisk *gendisk, fmode_t mode)
-{
- scm_put_ref();
-}
-
-static const struct block_device_operations scm_blk_devops = {
- .owner = THIS_MODULE,
- .open = scm_open,
- .release = scm_release,
-};
-
static bool scm_permit_request(struct scm_blk_dev *bdev, struct request *req)
{
return rq_data_dir(req) != WRITE || bdev->state != SCM_WR_PROHIBIT;
@@ -146,7 +130,7 @@ static void scm_request_prepare(struct scm_request *scmrq)
struct aidaw *aidaw = scmrq->aidaw;
struct msb *msb = &scmrq->aob->msb[0];
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
msb->bs = MSB_BS_4K;
scmrq->aob->request.msb_count = 1;
@@ -158,9 +142,9 @@ static void scm_request_prepare(struct scm_request *scmrq)
msb->data_addr = (u64) aidaw;
rq_for_each_segment(bv, scmrq->request, iter) {
- WARN_ON(bv->bv_offset);
- msb->blk_count += bv->bv_len >> 12;
- aidaw->data_addr = (u64) page_address(bv->bv_page);
+ WARN_ON(bv.bv_offset);
+ msb->blk_count += bv.bv_len >> 12;
+ aidaw->data_addr = (u64) page_address(bv.bv_page);
aidaw++;
}
}
@@ -223,8 +207,12 @@ static void scm_blk_request(struct request_queue *rq)
int ret;
while ((req = blk_peek_request(rq))) {
- if (req->cmd_type != REQ_TYPE_FS)
+ if (req->cmd_type != REQ_TYPE_FS) {
+ blk_start_request(req);
+ blk_dump_rq_flags(req, KMSG_COMPONENT " bad request");
+ blk_end_request_all(req, -EIO);
continue;
+ }
if (!scm_permit_request(bdev, req)) {
scm_ensure_queue_restart(bdev);
@@ -252,7 +240,7 @@ static void scm_blk_request(struct request_queue *rq)
atomic_inc(&bdev->queued_reqs);
blk_start_request(req);
- ret = scm_start_aob(scmrq->aob);
+ ret = eadm_start_aob(scmrq->aob);
if (ret) {
SCM_LOG(5, "no subchannel");
scm_request_requeue(scmrq);
@@ -316,7 +304,7 @@ static void scm_blk_handle_error(struct scm_request *scmrq)
}
restart:
- if (!scm_start_aob(scmrq->aob))
+ if (!eadm_start_aob(scmrq->aob))
return;
requeue:
@@ -359,6 +347,10 @@ static void scm_blk_tasklet(struct scm_blk_dev *bdev)
blk_run_queue(bdev->rq);
}
+static const struct block_device_operations scm_blk_devops = {
+ .owner = THIS_MODULE,
+};
+
int scm_blk_dev_setup(struct scm_blk_dev *bdev, struct scm_device *scmdev)
{
struct request_queue *rq;
diff --git a/drivers/s390/block/scm_blk.h b/drivers/s390/block/scm_blk.h
index 8b387b32fd6..e59331e6c2e 100644
--- a/drivers/s390/block/scm_blk.h
+++ b/drivers/s390/block/scm_blk.h
@@ -107,7 +107,7 @@ extern debug_info_t *scm_debug;
static inline void SCM_LOG_HEX(int level, void *data, int length)
{
- if (level > scm_debug->level)
+ if (!debug_level_enabled(scm_debug, level))
return;
while (length > 0) {
debug_event(scm_debug, level, data, length);
diff --git a/drivers/s390/block/scm_blk_cluster.c b/drivers/s390/block/scm_blk_cluster.c
index c0d102e3a48..9aae909d47a 100644
--- a/drivers/s390/block/scm_blk_cluster.c
+++ b/drivers/s390/block/scm_blk_cluster.c
@@ -122,7 +122,7 @@ static void scm_prepare_cluster_request(struct scm_request *scmrq)
struct aidaw *aidaw = scmrq->aidaw;
struct msb *msb = &scmrq->aob->msb[0];
struct req_iterator iter;
- struct bio_vec *bv;
+ struct bio_vec bv;
int i = 0;
u64 addr;
@@ -163,7 +163,7 @@ static void scm_prepare_cluster_request(struct scm_request *scmrq)
i++;
}
rq_for_each_segment(bv, req, iter) {
- aidaw->data_addr = (u64) page_address(bv->bv_page);
+ aidaw->data_addr = (u64) page_address(bv.bv_page);
aidaw++;
i++;
}
@@ -187,7 +187,7 @@ bool scm_need_cluster_request(struct scm_request *scmrq)
void scm_initiate_cluster_request(struct scm_request *scmrq)
{
scm_prepare_cluster_request(scmrq);
- if (scm_start_aob(scmrq->aob))
+ if (eadm_start_aob(scmrq->aob))
scm_request_requeue(scmrq);
}
diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index 464dd29d06c..6969d39f1e2 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -184,25 +184,26 @@ static unsigned long xpram_highest_page_index(void)
static void xpram_make_request(struct request_queue *q, struct bio *bio)
{
xpram_device_t *xdev = bio->bi_bdev->bd_disk->private_data;
- struct bio_vec *bvec;
+ struct bio_vec bvec;
+ struct bvec_iter iter;
unsigned int index;
unsigned long page_addr;
unsigned long bytes;
- int i;
- if ((bio->bi_sector & 7) != 0 || (bio->bi_size & 4095) != 0)
+ if ((bio->bi_iter.bi_sector & 7) != 0 ||
+ (bio->bi_iter.bi_size & 4095) != 0)
/* Request is not page-aligned. */
goto fail;
- if ((bio->bi_size >> 12) > xdev->size)
+ if ((bio->bi_iter.bi_size >> 12) > xdev->size)
/* Request size is no page-aligned. */
goto fail;
- if ((bio->bi_sector >> 3) > 0xffffffffU - xdev->offset)
+ if ((bio->bi_iter.bi_sector >> 3) > 0xffffffffU - xdev->offset)
goto fail;
- index = (bio->bi_sector >> 3) + xdev->offset;
- bio_for_each_segment(bvec, bio, i) {
+ index = (bio->bi_iter.bi_sector >> 3) + xdev->offset;
+ bio_for_each_segment(bvec, bio, iter) {
page_addr = (unsigned long)
- kmap(bvec->bv_page) + bvec->bv_offset;
- bytes = bvec->bv_len;
+ kmap(bvec.bv_page) + bvec.bv_offset;
+ bytes = bvec.bv_len;
if ((page_addr & 4095) != 0 || (bytes & 4095) != 0)
/* More paranoia. */
goto fail;
@@ -257,6 +258,7 @@ static int __init xpram_setup_sizes(unsigned long pages)
unsigned long mem_needed;
unsigned long mem_auto;
unsigned long long size;
+ char *sizes_end;
int mem_auto_no;
int i;
@@ -275,8 +277,8 @@ static int __init xpram_setup_sizes(unsigned long pages)
mem_auto_no = 0;
for (i = 0; i < xpram_devs; i++) {
if (sizes[i]) {
- size = simple_strtoull(sizes[i], &sizes[i], 0);
- switch (sizes[i][0]) {
+ size = simple_strtoull(sizes[i], &sizes_end, 0);
+ switch (*sizes_end) {
case 'g':
case 'G':
size <<= 20;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 18:20:38 +0000