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path: root/drivers/s390/cio/chsc.c
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Diffstat (limited to 'drivers/s390/cio/chsc.c')
-rw-r--r--drivers/s390/cio/chsc.c121
1 files changed, 44 insertions, 77 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 597c0c76a2a..e7ba16a74ef 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -89,7 +89,8 @@ int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
/* Copy data */
ret = 0;
memset(ssd, 0, sizeof(struct chsc_ssd_info));
- if ((ssd_area->st != 0) && (ssd_area->st != 2))
+ if ((ssd_area->st != SUBCHANNEL_TYPE_IO) &&
+ (ssd_area->st != SUBCHANNEL_TYPE_MSG))
goto out_free;
ssd->path_mask = ssd_area->path_mask;
ssd->fla_valid_mask = ssd_area->fla_valid_mask;
@@ -132,20 +133,16 @@ static void terminate_internal_io(struct subchannel *sch)
device_set_intretry(sch);
/* Call handler. */
if (sch->driver && sch->driver->termination)
- sch->driver->termination(&sch->dev);
+ sch->driver->termination(sch);
}
-static int
-s390_subchannel_remove_chpid(struct device *dev, void *data)
+static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data)
{
int j;
int mask;
- struct subchannel *sch;
- struct chp_id *chpid;
+ struct chp_id *chpid = data;
struct schib schib;
- sch = to_subchannel(dev);
- chpid = data;
for (j = 0; j < 8; j++) {
mask = 0x80 >> j;
if ((sch->schib.pmcw.pim & mask) &&
@@ -158,7 +155,7 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
spin_lock_irq(sch->lock);
stsch(sch->schid, &schib);
- if (!schib.pmcw.dnv)
+ if (!css_sch_is_valid(&schib))
goto out_unreg;
memcpy(&sch->schib, &schib, sizeof(struct schib));
/* Check for single path devices. */
@@ -172,12 +169,12 @@ s390_subchannel_remove_chpid(struct device *dev, void *data)
terminate_internal_io(sch);
/* Re-start path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
}
} else {
/* trigger path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
else if (sch->lpm == mask)
goto out_unreg;
}
@@ -201,12 +198,10 @@ void chsc_chp_offline(struct chp_id chpid)
if (chp_get_status(chpid) <= 0)
return;
- bus_for_each_dev(&css_bus_type, NULL, &chpid,
- s390_subchannel_remove_chpid);
+ for_each_subchannel_staged(s390_subchannel_remove_chpid, NULL, &chpid);
}
-static int
-s390_process_res_acc_new_sch(struct subchannel_id schid)
+static int s390_process_res_acc_new_sch(struct subchannel_id schid, void *data)
{
struct schib schib;
/*
@@ -252,18 +247,10 @@ static int get_res_chpid_mask(struct chsc_ssd_info *ssd,
return 0;
}
-static int
-__s390_process_res_acc(struct subchannel_id schid, void *data)
+static int __s390_process_res_acc(struct subchannel *sch, void *data)
{
int chp_mask, old_lpm;
- struct res_acc_data *res_data;
- struct subchannel *sch;
-
- res_data = data;
- sch = get_subchannel_by_schid(schid);
- if (!sch)
- /* Check if a subchannel is newly available. */
- return s390_process_res_acc_new_sch(schid);
+ struct res_acc_data *res_data = data;
spin_lock_irq(sch->lock);
chp_mask = get_res_chpid_mask(&sch->ssd_info, res_data);
@@ -279,10 +266,10 @@ __s390_process_res_acc(struct subchannel_id schid, void *data)
if (!old_lpm && sch->lpm)
device_trigger_reprobe(sch);
else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
out:
spin_unlock_irq(sch->lock);
- put_device(&sch->dev);
+
return 0;
}
@@ -305,7 +292,8 @@ static void s390_process_res_acc (struct res_acc_data *res_data)
* The more information we have (info), the less scanning
* will we have to do.
*/
- for_each_subchannel(__s390_process_res_acc, res_data);
+ for_each_subchannel_staged(__s390_process_res_acc,
+ s390_process_res_acc_new_sch, res_data);
}
static int
@@ -499,8 +487,7 @@ void chsc_process_crw(void)
} while (sei_area->flags & 0x80);
}
-static int
-__chp_add_new_sch(struct subchannel_id schid)
+static int __chp_add_new_sch(struct subchannel_id schid, void *data)
{
struct schib schib;
@@ -514,45 +501,37 @@ __chp_add_new_sch(struct subchannel_id schid)
}
-static int
-__chp_add(struct subchannel_id schid, void *data)
+static int __chp_add(struct subchannel *sch, void *data)
{
int i, mask;
- struct chp_id *chpid;
- struct subchannel *sch;
-
- chpid = data;
- sch = get_subchannel_by_schid(schid);
- if (!sch)
- /* Check if the subchannel is now available. */
- return __chp_add_new_sch(schid);
+ struct chp_id *chpid = data;
+
spin_lock_irq(sch->lock);
for (i=0; i<8; i++) {
mask = 0x80 >> i;
if ((sch->schib.pmcw.pim & mask) &&
- (sch->schib.pmcw.chpid[i] == chpid->id)) {
- if (stsch(sch->schid, &sch->schib) != 0) {
- /* Endgame. */
- spin_unlock_irq(sch->lock);
- return -ENXIO;
- }
+ (sch->schib.pmcw.chpid[i] == chpid->id))
break;
- }
}
if (i==8) {
spin_unlock_irq(sch->lock);
return 0;
}
+ if (stsch(sch->schid, &sch->schib)) {
+ spin_unlock_irq(sch->lock);
+ css_schedule_eval(sch->schid);
+ return 0;
+ }
sch->lpm = ((sch->schib.pmcw.pim &
sch->schib.pmcw.pam &
sch->schib.pmcw.pom)
| mask) & sch->opm;
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
spin_unlock_irq(sch->lock);
- put_device(&sch->dev);
+
return 0;
}
@@ -564,7 +543,8 @@ void chsc_chp_online(struct chp_id chpid)
CIO_TRACE_EVENT(2, dbf_txt);
if (chp_get_status(chpid) != 0)
- for_each_subchannel(__chp_add, &chpid);
+ for_each_subchannel_staged(__chp_add, __chp_add_new_sch,
+ &chpid);
}
static void __s390_subchannel_vary_chpid(struct subchannel *sch,
@@ -589,7 +569,7 @@ static void __s390_subchannel_vary_chpid(struct subchannel *sch,
if (!old_lpm)
device_trigger_reprobe(sch);
else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
break;
}
sch->opm &= ~mask;
@@ -603,37 +583,29 @@ static void __s390_subchannel_vary_chpid(struct subchannel *sch,
terminate_internal_io(sch);
/* Re-start path verification. */
if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
}
} else if (!sch->lpm) {
if (device_trigger_verify(sch) != 0)
css_schedule_eval(sch->schid);
} else if (sch->driver && sch->driver->verify)
- sch->driver->verify(&sch->dev);
+ sch->driver->verify(sch);
break;
}
spin_unlock_irqrestore(sch->lock, flags);
}
-static int s390_subchannel_vary_chpid_off(struct device *dev, void *data)
+static int s390_subchannel_vary_chpid_off(struct subchannel *sch, void *data)
{
- struct subchannel *sch;
- struct chp_id *chpid;
-
- sch = to_subchannel(dev);
- chpid = data;
+ struct chp_id *chpid = data;
__s390_subchannel_vary_chpid(sch, *chpid, 0);
return 0;
}
-static int s390_subchannel_vary_chpid_on(struct device *dev, void *data)
+static int s390_subchannel_vary_chpid_on(struct subchannel *sch, void *data)
{
- struct subchannel *sch;
- struct chp_id *chpid;
-
- sch = to_subchannel(dev);
- chpid = data;
+ struct chp_id *chpid = data;
__s390_subchannel_vary_chpid(sch, *chpid, 1);
return 0;
@@ -643,13 +615,7 @@ static int
__s390_vary_chpid_on(struct subchannel_id schid, void *data)
{
struct schib schib;
- struct subchannel *sch;
- sch = get_subchannel_by_schid(schid);
- if (sch) {
- put_device(&sch->dev);
- return 0;
- }
if (stsch_err(schid, &schib))
/* We're through */
return -ENXIO;
@@ -669,12 +635,13 @@ int chsc_chp_vary(struct chp_id chpid, int on)
* Redo PathVerification on the devices the chpid connects to
*/
- bus_for_each_dev(&css_bus_type, NULL, &chpid, on ?
- s390_subchannel_vary_chpid_on :
- s390_subchannel_vary_chpid_off);
if (on)
- /* Scan for new devices on varied on path. */
- for_each_subchannel(__s390_vary_chpid_on, NULL);
+ for_each_subchannel_staged(s390_subchannel_vary_chpid_on,
+ __s390_vary_chpid_on, &chpid);
+ else
+ for_each_subchannel_staged(s390_subchannel_vary_chpid_off,
+ NULL, &chpid);
+
return 0;
}
@@ -1075,7 +1042,7 @@ chsc_determine_css_characteristics(void)
scsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
if (!scsc_area) {
- CIO_MSG_EVENT(0, "Was not able to determine available"
+ CIO_MSG_EVENT(0, "Was not able to determine available "
"CHSCs due to no memory.\n");
return -ENOMEM;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 07:35:51 +0000