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authorHarald Freudenberger <freude@linux.ibm.com>2018-10-01 15:29:01 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2018-10-09 11:21:37 +0200
commitaa55bf5f022271903fe8a71e08be3e217e1b6363 (patch)
treea965c4bf8283edb8eda3f4aa9b4b94390127a0ad /drivers/s390/crypto/ap_bus.c
parenta17b92e0487f0bfbb1c5d0bdf26c64dddfc31ac4 (diff)
s390/zcrypt: add ap_adapter_mask sysfs attribute
This patch provides a new sysfs attribute file /sys/bus/ap/ap_adapter_mask. This read-only attribute refrects the apm field as it is found in the PQAP(QCI) crypto info. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/ap_bus.c')
-rw-r--r--drivers/s390/crypto/ap_bus.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 15bca7583bb9..048665e4f13d 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1037,6 +1037,21 @@ static ssize_t ap_usage_domain_mask_show(struct bus_type *bus, char *buf)
static BUS_ATTR_RO(ap_usage_domain_mask);
+static ssize_t ap_adapter_mask_show(struct bus_type *bus, char *buf)
+{
+ if (!ap_configuration) /* QCI not supported */
+ return snprintf(buf, PAGE_SIZE, "not supported\n");
+
+ return snprintf(buf, PAGE_SIZE,
+ "0x%08x%08x%08x%08x%08x%08x%08x%08x\n",
+ ap_configuration->apm[0], ap_configuration->apm[1],
+ ap_configuration->apm[2], ap_configuration->apm[3],
+ ap_configuration->apm[4], ap_configuration->apm[5],
+ ap_configuration->apm[6], ap_configuration->apm[7]);
+}
+
+static BUS_ATTR_RO(ap_adapter_mask);
+
static ssize_t ap_interrupts_show(struct bus_type *bus, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%d\n",
@@ -1195,6 +1210,7 @@ static struct bus_attribute *const ap_bus_attrs[] = {
&bus_attr_ap_domain,
&bus_attr_ap_control_domain_mask,
&bus_attr_ap_usage_domain_mask,
+ &bus_attr_ap_adapter_mask,
&bus_attr_config_time,
&bus_attr_poll_thread,
&bus_attr_ap_interrupts,

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