aboutsummaryrefslogtreecommitdiff
path: root/drivers/s390/cio
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/ccwreq.c3
-rw-r--r--drivers/s390/cio/device.c1
-rw-r--r--drivers/s390/cio/device_pgid.c29
-rw-r--r--drivers/s390/cio/fcx.c4
-rw-r--r--drivers/s390/cio/io_sch.h1
-rw-r--r--drivers/s390/cio/qdio_main.c3
-rw-r--r--drivers/s390/cio/qdio_perf.c2
-rw-r--r--drivers/s390/cio/qdio_perf.h1
-rw-r--r--drivers/s390/cio/qdio_setup.c10
9 files changed, 28 insertions, 26 deletions
diff --git a/drivers/s390/cio/ccwreq.c b/drivers/s390/cio/ccwreq.c
index 9509e386093..7a28a3029a3 100644
--- a/drivers/s390/cio/ccwreq.c
+++ b/drivers/s390/cio/ccwreq.c
@@ -49,7 +49,6 @@ static u16 ccwreq_next_path(struct ccw_device *cdev)
*/
static void ccwreq_stop(struct ccw_device *cdev, int rc)
{
- struct subchannel *sch = to_subchannel(cdev->dev.parent);
struct ccw_request *req = &cdev->private->req;
if (req->done)
@@ -57,7 +56,6 @@ static void ccwreq_stop(struct ccw_device *cdev, int rc)
req->done = 1;
ccw_device_set_timeout(cdev, 0);
memset(&cdev->private->irb, 0, sizeof(struct irb));
- sch->lpm = sch->schib.pmcw.pam;
if (rc && rc != -ENODEV && req->drc)
rc = req->drc;
req->callback(cdev, req->data, rc);
@@ -80,7 +78,6 @@ static void ccwreq_do(struct ccw_device *cdev)
continue;
}
/* Perform start function. */
- sch->lpm = 0xff;
memset(&cdev->private->irb, 0, sizeof(struct irb));
rc = cio_start(sch, cp, (u8) req->mask);
if (rc == 0) {
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 73901c9e260..a6c7d5426fb 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1519,6 +1519,7 @@ static int ccw_device_console_enable(struct ccw_device *cdev,
sch->driver = &io_subchannel_driver;
/* Initialize the ccw_device structure. */
cdev->dev.parent= &sch->dev;
+ sch_set_cdev(sch, cdev);
io_subchannel_recog(cdev, sch);
/* Now wait for the async. recognition to come to an end. */
spin_lock_irq(cdev->ccwlock);
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c
index aad188e43b4..6facb5499a6 100644
--- a/drivers/s390/cio/device_pgid.c
+++ b/drivers/s390/cio/device_pgid.c
@@ -142,7 +142,7 @@ static void spid_do(struct ccw_device *cdev)
u8 fn;
/* Use next available path that is not already in correct state. */
- req->lpm = lpm_adjust(req->lpm, sch->schib.pmcw.pam & ~sch->vpm);
+ req->lpm = lpm_adjust(req->lpm, cdev->private->pgid_todo_mask);
if (!req->lpm)
goto out_nopath;
/* Channel program setup. */
@@ -254,15 +254,15 @@ static void pgid_analyze(struct ccw_device *cdev, struct pgid **p,
*p = first;
}
-static u8 pgid_to_vpm(struct ccw_device *cdev)
+static u8 pgid_to_donepm(struct ccw_device *cdev)
{
struct subchannel *sch = to_subchannel(cdev->dev.parent);
struct pgid *pgid;
int i;
int lpm;
- u8 vpm = 0;
+ u8 donepm = 0;
- /* Set VPM bits for paths which are already in the target state. */
+ /* Set bits for paths which are already in the target state. */
for (i = 0; i < 8; i++) {
lpm = 0x80 >> i;
if ((cdev->private->pgid_valid_mask & lpm) == 0)
@@ -282,10 +282,10 @@ static u8 pgid_to_vpm(struct ccw_device *cdev)
if (pgid->inf.ps.state3 != SNID_STATE3_SINGLE_PATH)
continue;
}
- vpm |= lpm;
+ donepm |= lpm;
}
- return vpm;
+ return donepm;
}
static void pgid_fill(struct ccw_device *cdev, struct pgid *pgid)
@@ -307,6 +307,7 @@ static void snid_done(struct ccw_device *cdev, int rc)
int mismatch = 0;
int reserved = 0;
int reset = 0;
+ u8 donepm;
if (rc)
goto out;
@@ -316,18 +317,20 @@ static void snid_done(struct ccw_device *cdev, int rc)
else if (mismatch)
rc = -EOPNOTSUPP;
else {
- sch->vpm = pgid_to_vpm(cdev);
+ donepm = pgid_to_donepm(cdev);
+ sch->vpm = donepm & sch->opm;
+ cdev->private->pgid_todo_mask &= ~donepm;
pgid_fill(cdev, pgid);
}
out:
CIO_MSG_EVENT(2, "snid: device 0.%x.%04x: rc=%d pvm=%02x vpm=%02x "
- "mism=%d rsvd=%d reset=%d\n", id->ssid, id->devno, rc,
- cdev->private->pgid_valid_mask, sch->vpm, mismatch,
- reserved, reset);
+ "todo=%02x mism=%d rsvd=%d reset=%d\n", id->ssid,
+ id->devno, rc, cdev->private->pgid_valid_mask, sch->vpm,
+ cdev->private->pgid_todo_mask, mismatch, reserved, reset);
switch (rc) {
case 0:
/* Anything left to do? */
- if (sch->vpm == sch->schib.pmcw.pam) {
+ if (cdev->private->pgid_todo_mask == 0) {
verify_done(cdev, sch->vpm == 0 ? -EACCES : 0);
return;
}
@@ -411,6 +414,7 @@ static void verify_start(struct ccw_device *cdev)
struct ccw_dev_id *devid = &cdev->private->dev_id;
sch->vpm = 0;
+ sch->lpm = sch->schib.pmcw.pam;
/* Initialize request data. */
memset(req, 0, sizeof(*req));
req->timeout = PGID_TIMEOUT;
@@ -442,11 +446,14 @@ static void verify_start(struct ccw_device *cdev)
*/
void ccw_device_verify_start(struct ccw_device *cdev)
{
+ struct subchannel *sch = to_subchannel(cdev->dev.parent);
+
CIO_TRACE_EVENT(4, "vrfy");
CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id));
/* Initialize PGID data. */
memset(cdev->private->pgid, 0, sizeof(cdev->private->pgid));
cdev->private->pgid_valid_mask = 0;
+ cdev->private->pgid_todo_mask = sch->schib.pmcw.pam;
/*
* Initialize pathgroup and multipath state with target values.
* They may change in the course of path verification.
diff --git a/drivers/s390/cio/fcx.c b/drivers/s390/cio/fcx.c
index 61677dfbdc9..ca5e9bb9d45 100644
--- a/drivers/s390/cio/fcx.c
+++ b/drivers/s390/cio/fcx.c
@@ -163,7 +163,7 @@ void tcw_finalize(struct tcw *tcw, int num_tidaws)
/* Add tcat to tccb. */
tccb = tcw_get_tccb(tcw);
tcat = (struct tccb_tcat *) &tccb->tca[tca_size(tccb)];
- memset(tcat, 0, sizeof(tcat));
+ memset(tcat, 0, sizeof(*tcat));
/* Calculate tcw input/output count and tcat transport count. */
count = calc_dcw_count(tccb);
if (tcw->w && (tcw->flags & TCW_FLAGS_OUTPUT_TIDA))
@@ -269,7 +269,7 @@ EXPORT_SYMBOL(tccb_init);
*/
void tsb_init(struct tsb *tsb)
{
- memset(tsb, 0, sizeof(tsb));
+ memset(tsb, 0, sizeof(*tsb));
}
EXPORT_SYMBOL(tsb_init);
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h
index d72ae4c93af..b9ce712a7f2 100644
--- a/drivers/s390/cio/io_sch.h
+++ b/drivers/s390/cio/io_sch.h
@@ -150,6 +150,7 @@ struct ccw_device_private {
struct ccw_request req; /* internal I/O request */
int iretry;
u8 pgid_valid_mask; /* mask of valid PGIDs */
+ u8 pgid_todo_mask; /* mask of PGIDs to be adjusted */
struct {
unsigned int fast:1; /* post with "channel end" */
unsigned int repall:1; /* report every interrupt status */
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 4be6e84b959..b2275c5000e 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -486,7 +486,8 @@ static int get_inbound_buffer_frontier(struct qdio_q *q)
case SLSB_P_INPUT_PRIMED:
inbound_primed(q, count);
q->first_to_check = add_buf(q->first_to_check, count);
- atomic_sub(count, &q->nr_buf_used);
+ if (atomic_sub(count, &q->nr_buf_used) == 0)
+ qdio_perf_stat_inc(&perf_stats.inbound_queue_full);
break;
case SLSB_P_INPUT_ERROR:
announce_buffer_error(q, count);
diff --git a/drivers/s390/cio/qdio_perf.c b/drivers/s390/cio/qdio_perf.c
index 968e3c7c263..54f7c325a3e 100644
--- a/drivers/s390/cio/qdio_perf.c
+++ b/drivers/s390/cio/qdio_perf.c
@@ -64,6 +64,8 @@ static int qdio_perf_proc_show(struct seq_file *m, void *v)
(long)atomic_long_read(&perf_stats.fast_requeue));
seq_printf(m, "Number of outbound target full condition\t: %li\n",
(long)atomic_long_read(&perf_stats.outbound_target_full));
+ seq_printf(m, "Number of inbound queue full condition\t\t: %li\n",
+ (long)atomic_long_read(&perf_stats.inbound_queue_full));
seq_printf(m, "Number of outbound tasklet mod_timer calls\t: %li\n",
(long)atomic_long_read(&perf_stats.debug_tl_out_timer));
seq_printf(m, "Number of stop polling calls\t\t\t: %li\n",
diff --git a/drivers/s390/cio/qdio_perf.h b/drivers/s390/cio/qdio_perf.h
index ff4504ce1e3..12454231dc8 100644
--- a/drivers/s390/cio/qdio_perf.h
+++ b/drivers/s390/cio/qdio_perf.h
@@ -36,6 +36,7 @@ struct qdio_perf_stats {
atomic_long_t outbound_handler;
atomic_long_t fast_requeue;
atomic_long_t outbound_target_full;
+ atomic_long_t inbound_queue_full;
/* for debugging */
atomic_long_t debug_tl_out_timer;
diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 18d54fc21ce..8c2dea5fa2b 100644
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -48,7 +48,6 @@ static void set_impl_params(struct qdio_irq *irq_ptr,
if (!irq_ptr)
return;
- WARN_ON((unsigned long)&irq_ptr->qib & 0xff);
irq_ptr->qib.pfmt = qib_param_field_format;
if (qib_param_field)
memcpy(irq_ptr->qib.parm, qib_param_field,
@@ -82,14 +81,12 @@ static int __qdio_allocate_qs(struct qdio_q **irq_ptr_qs, int nr_queues)
q = kmem_cache_alloc(qdio_q_cache, GFP_KERNEL);
if (!q)
return -ENOMEM;
- WARN_ON((unsigned long)q & 0xff);
q->slib = (struct slib *) __get_free_page(GFP_KERNEL);
if (!q->slib) {
kmem_cache_free(qdio_q_cache, q);
return -ENOMEM;
}
- WARN_ON((unsigned long)q->slib & 0x7ff);
irq_ptr_qs[i] = q;
}
return 0;
@@ -131,7 +128,7 @@ static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr,
/* fill in sbal */
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++) {
q->sbal[j] = *sbals_array++;
- WARN_ON((unsigned long)q->sbal[j] & 0xff);
+ BUG_ON((unsigned long)q->sbal[j] & 0xff);
}
/* fill in slib */
@@ -147,11 +144,6 @@ static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr,
/* fill in sl */
for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; j++)
q->sl->element[j].sbal = (unsigned long)q->sbal[j];
-
- DBF_EVENT("sl-slsb-sbal");
- DBF_HEX(q->sl, sizeof(void *));
- DBF_HEX(&q->slsb, sizeof(void *));
- DBF_HEX(q->sbal, sizeof(void *));
}
static void setup_queues(struct qdio_irq *irq_ptr,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 12:06:41 +0000