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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.c73
1 files changed, 37 insertions, 36 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 13299f902676..f6b9188c5af5 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -55,6 +55,7 @@ int chsc_error_from_response(int response)
case 0x0004:
return -EOPNOTSUPP;
case 0x000b:
+ case 0x0107: /* "Channel busy" for the op 0x003d */
return -EBUSY;
case 0x0100:
case 0x0102:
@@ -237,26 +238,6 @@ void chsc_chp_offline(struct chp_id chpid)
for_each_subchannel_staged(s390_subchannel_remove_chpid, NULL, &link);
}
-static int s390_process_res_acc_new_sch(struct subchannel_id schid, void *data)
-{
- struct schib schib;
- /*
- * We don't know the device yet, but since a path
- * may be available now to the device we'll have
- * to do recognition again.
- * Since we don't have any idea about which chpid
- * that beast may be on we'll have to do a stsch
- * on all devices, grr...
- */
- if (stsch_err(schid, &schib))
- /* We're through */
- return -ENXIO;
-
- /* Put it on the slow path. */
- css_schedule_eval(schid);
- return 0;
-}
-
static int __s390_process_res_acc(struct subchannel *sch, void *data)
{
spin_lock_irq(sch->lock);
@@ -287,8 +268,8 @@ static void s390_process_res_acc(struct chp_link *link)
* The more information we have (info), the less scanning
* will we have to do.
*/
- for_each_subchannel_staged(__s390_process_res_acc,
- s390_process_res_acc_new_sch, link);
+ for_each_subchannel_staged(__s390_process_res_acc, NULL, link);
+ css_schedule_reprobe();
}
static int
@@ -663,19 +644,6 @@ static int s390_subchannel_vary_chpid_on(struct subchannel *sch, void *data)
return 0;
}
-static int
-__s390_vary_chpid_on(struct subchannel_id schid, void *data)
-{
- struct schib schib;
-
- if (stsch_err(schid, &schib))
- /* We're through */
- return -ENXIO;
- /* Put it on the slow path. */
- css_schedule_eval(schid);
- return 0;
-}
-
/**
* chsc_chp_vary - propagate channel-path vary operation to subchannels
* @chpid: channl-path ID
@@ -694,7 +662,8 @@ int chsc_chp_vary(struct chp_id chpid, int on)
/* Try to update the channel path description. */
chp_update_desc(chp);
for_each_subchannel_staged(s390_subchannel_vary_chpid_on,
- __s390_vary_chpid_on, &chpid);
+ NULL, &chpid);
+ css_schedule_reprobe();
} else
for_each_subchannel_staged(s390_subchannel_vary_chpid_off,
NULL, &chpid);
@@ -1234,3 +1203,35 @@ out:
return ret;
}
EXPORT_SYMBOL_GPL(chsc_scm_info);
+
+/**
+ * chsc_pnso_brinfo() - Perform Network-Subchannel Operation, Bridge Info.
+ * @schid: id of the subchannel on which PNSO is performed
+ * @brinfo_area: request and response block for the operation
+ * @resume_token: resume token for multiblock response
+ * @cnc: Boolean change-notification control
+ *
+ * brinfo_area must be allocated by the caller with get_zeroed_page(GFP_KERNEL)
+ *
+ * Returns 0 on success.
+ */
+int chsc_pnso_brinfo(struct subchannel_id schid,
+ struct chsc_pnso_area *brinfo_area,
+ struct chsc_brinfo_resume_token resume_token,
+ int cnc)
+{
+ memset(brinfo_area, 0, sizeof(*brinfo_area));
+ brinfo_area->request.length = 0x0030;
+ brinfo_area->request.code = 0x003d; /* network-subchannel operation */
+ brinfo_area->m = schid.m;
+ brinfo_area->ssid = schid.ssid;
+ brinfo_area->sch = schid.sch_no;
+ brinfo_area->cssid = schid.cssid;
+ brinfo_area->oc = 0; /* Store-network-bridging-information list */
+ brinfo_area->resume_token = resume_token;
+ brinfo_area->n = (cnc != 0);
+ if (chsc(brinfo_area))
+ return -EIO;
+ return chsc_error_from_response(brinfo_area->response.code);
+}
+EXPORT_SYMBOL_GPL(chsc_pnso_brinfo);