diff options
Diffstat (limited to 'drivers/s390/crypto/ap_queue.c')
| -rw-r--r-- | drivers/s390/crypto/ap_queue.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index 57028a35be98..1c08b282987c 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -630,6 +630,26 @@ static ssize_t chkstop_show(struct device *dev, static DEVICE_ATTR_RO(chkstop); +static ssize_t ap_functions_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ap_queue *aq = to_ap_queue(dev); + struct ap_queue_status status; + struct ap_tapq_gr2 info; + + status = ap_test_queue(aq->qid, 1, &info); + if (status.response_code > AP_RESPONSE_BUSY) { + AP_DBF_DBG("%s RC 0x%02x on tapq(0x%02x.%04x)\n", + __func__, status.response_code, + AP_QID_CARD(aq->qid), AP_QID_QUEUE(aq->qid)); + return -EIO; + } + + return sysfs_emit(buf, "0x%08X\n", info.fac); +} + +static DEVICE_ATTR_RO(ap_functions); + #ifdef CONFIG_ZCRYPT_DEBUG static ssize_t states_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -738,6 +758,7 @@ static struct attribute *ap_queue_dev_attrs[] = { &dev_attr_interrupt.attr, &dev_attr_config.attr, &dev_attr_chkstop.attr, + &dev_attr_ap_functions.attr, #ifdef CONFIG_ZCRYPT_DEBUG &dev_attr_states.attr, &dev_attr_last_err_rc.attr, |