diff options
Diffstat (limited to 'drivers/s390/crypto/ap_bus.c')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index b3c350e9fc1d..4e1926cf7a3d 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -1557,6 +1557,31 @@ static ssize_t bindings_show(struct bus_type *bus, char *buf) static BUS_ATTR_RO(bindings); +static ssize_t features_show(struct bus_type *bus, char *buf) +{ + int n = 0; + + if (!ap_qci_info) /* QCI not supported */ + return sysfs_emit(buf, "-\n"); + + if (ap_qci_info->apsc) + n += sysfs_emit_at(buf, n, "APSC "); + if (ap_qci_info->apxa) + n += sysfs_emit_at(buf, n, "APXA "); + if (ap_qci_info->qact) + n += sysfs_emit_at(buf, n, "QACT "); + if (ap_qci_info->rc8a) + n += sysfs_emit_at(buf, n, "RC8A "); + if (ap_qci_info->apsb) + n += sysfs_emit_at(buf, n, "APSB "); + + sysfs_emit_at(buf, n == 0 ? 0 : n - 1, "\n"); + + return n; +} + +static BUS_ATTR_RO(features); + static struct attribute *ap_bus_attrs[] = { &bus_attr_ap_domain.attr, &bus_attr_ap_control_domain_mask.attr, @@ -1572,6 +1597,7 @@ static struct attribute *ap_bus_attrs[] = { &bus_attr_aqmask.attr, &bus_attr_scans.attr, &bus_attr_bindings.attr, + &bus_attr_features.attr, NULL, }; ATTRIBUTE_GROUPS(ap_bus); |