From: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Date: Thu, 2 Oct 2014 12:48:46 +0000 (+0200)
Subject: s390/zcrypt: Toleration of new crypto hardware
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=42f4dd613fe808676126472bbe1283e452201148;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

s390/zcrypt: Toleration of new crypto hardware

The zcrypt device driver will accept the new crypto adapter
in toleration mode. A new sysfs attribute 'raw_hwtype' will
expose the raw hardware type.

Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
---

diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 51e6aa0e2e58..99485415dcc2 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -664,6 +664,17 @@ static ssize_t ap_hwtype_show(struct device *dev,
 }
 
 static DEVICE_ATTR(hwtype, 0444, ap_hwtype_show, NULL);
+
+static ssize_t ap_raw_hwtype_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct ap_device *ap_dev = to_ap_dev(dev);
+
+	return snprintf(buf, PAGE_SIZE, "%d\n", ap_dev->raw_hwtype);
+}
+
+static DEVICE_ATTR(raw_hwtype, 0444, ap_raw_hwtype_show, NULL);
+
 static ssize_t ap_depth_show(struct device *dev, struct device_attribute *attr,
 			     char *buf)
 {
@@ -734,6 +745,7 @@ static DEVICE_ATTR(ap_functions, 0444, ap_functions_show, NULL);
 
 static struct attribute *ap_dev_attrs[] = {
 	&dev_attr_hwtype.attr,
+	&dev_attr_raw_hwtype.attr,
 	&dev_attr_depth.attr,
 	&dev_attr_request_count.attr,
 	&dev_attr_requestq_count.attr,
@@ -1417,9 +1429,13 @@ static void ap_scan_bus(struct work_struct *unused)
 				continue;
 			}
 			break;
+		case 11:
+			ap_dev->device_type = 10;
+			break;
 		default:
 			ap_dev->device_type = device_type;
 		}
+		ap_dev->raw_hwtype = device_type;
 
 		rc = ap_query_functions(qid, &device_functions);
 		if (!rc)
diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h
index db92e9fa5c07..055a0f956d17 100644
--- a/drivers/s390/crypto/ap_bus.h
+++ b/drivers/s390/crypto/ap_bus.h
@@ -161,6 +161,7 @@ struct ap_device {
 	ap_qid_t qid;			/* AP queue id. */
 	int queue_depth;		/* AP queue depth.*/
 	int device_type;		/* AP device type. */
+	int raw_hwtype;			/* AP raw hardware type. */
 	unsigned int functions;		/* AP device function bitfield. */
 	int unregistered;		/* marks AP device as unregistered */
 	struct timer_list timeout;	/* Timer for request timeouts. */