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path: root/drivers/s390/crypto/zcrypt_pcica.c
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Diffstat (limited to 'drivers/s390/crypto/zcrypt_pcica.c')
-rw-r--r--drivers/s390/crypto/zcrypt_pcica.c82
1 files changed, 42 insertions, 40 deletions
diff --git a/drivers/s390/crypto/zcrypt_pcica.c b/drivers/s390/crypto/zcrypt_pcica.c
index b6a4ecdc802..7a743f4c646 100644
--- a/drivers/s390/crypto/zcrypt_pcica.c
+++ b/drivers/s390/crypto/zcrypt_pcica.c
@@ -1,9 +1,7 @@
/*
- * linux/drivers/s390/crypto/zcrypt_pcica.c
- *
* zcrypt 2.1.0
*
- * Copyright (C) 2001, 2006 IBM Corporation
+ * Copyright IBM Corp. 2001, 2006
* Author(s): Robert Burroughs
* Eric Rossman (edrossma@us.ibm.com)
*
@@ -26,10 +24,14 @@
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#define KMSG_COMPONENT "zcrypt"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/init.h>
#include <linux/err.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
#include <asm/uaccess.h>
#include "ap_bus.h"
@@ -52,13 +54,11 @@ static struct ap_device_id zcrypt_pcica_ids[] = {
{ /* end of list */ },
};
-#ifndef CONFIG_ZCRYPT_MONOLITHIC
MODULE_DEVICE_TABLE(ap, zcrypt_pcica_ids);
MODULE_AUTHOR("IBM Corporation");
MODULE_DESCRIPTION("PCICA Cryptographic Coprocessor device driver, "
- "Copyright 2001, 2006 IBM Corporation");
+ "Copyright IBM Corp. 2001, 2006");
MODULE_LICENSE("GPL");
-#endif
static int zcrypt_pcica_probe(struct ap_device *ap_dev);
static void zcrypt_pcica_remove(struct ap_device *ap_dev);
@@ -68,8 +68,8 @@ static void zcrypt_pcica_receive(struct ap_device *, struct ap_message *,
static struct ap_driver zcrypt_pcica_driver = {
.probe = zcrypt_pcica_probe,
.remove = zcrypt_pcica_remove,
- .receive = zcrypt_pcica_receive,
.ids = zcrypt_pcica_ids,
+ .request_timeout = PCICA_CLEANUP_TIME,
};
/**
@@ -191,10 +191,10 @@ static int ICACRT_msg_to_type4CRT_msg(struct zcrypt_device *zdev,
*
* Returns 0 on success or -EFAULT.
*/
-static inline int convert_type84(struct zcrypt_device *zdev,
- struct ap_message *reply,
- char __user *outputdata,
- unsigned int outputdatalength)
+static int convert_type84(struct zcrypt_device *zdev,
+ struct ap_message *reply,
+ char __user *outputdata,
+ unsigned int outputdatalength)
{
struct type84_hdr *t84h = reply->message;
char *data;
@@ -202,6 +202,10 @@ static inline int convert_type84(struct zcrypt_device *zdev,
if (t84h->len < sizeof(*t84h) + outputdatalength) {
/* The result is too short, the PCICA card may not do that.. */
zdev->online = 0;
+ pr_err("Cryptographic device %x failed and was set offline\n",
+ zdev->ap_dev->qid);
+ ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%drc%d",
+ zdev->ap_dev->qid, zdev->online, t84h->code);
return -EAGAIN; /* repeat the request on a different device. */
}
BUG_ON(t84h->len > PCICA_MAX_RESPONSE_SIZE);
@@ -225,10 +229,11 @@ static int convert_response(struct zcrypt_device *zdev,
return convert_type84(zdev, reply,
outputdata, outputdatalength);
default: /* Unknown response type, this should NEVER EVER happen */
- PRINTK("Unrecognized Message Header: %08x%08x\n",
- *(unsigned int *) reply->message,
- *(unsigned int *) (reply->message+4));
zdev->online = 0;
+ pr_err("Cryptographic device %x failed and was set offline\n",
+ zdev->ap_dev->qid);
+ ZCRYPT_DBF_DEV(DBF_ERR, zdev, "dev%04xo%dfail",
+ zdev->ap_dev->qid, zdev->online);
return -EAGAIN; /* repeat the request on a different device. */
}
}
@@ -249,17 +254,21 @@ static void zcrypt_pcica_receive(struct ap_device *ap_dev,
.type = TYPE82_RSP_CODE,
.reply_code = REP82_ERROR_MACHINE_FAILURE,
};
- struct type84_hdr *t84h = reply->message;
+ struct type84_hdr *t84h;
int length;
/* Copy the reply message to the request message buffer. */
- if (IS_ERR(reply))
+ if (IS_ERR(reply)) {
memcpy(msg->message, &error_reply, sizeof(error_reply));
- else if (t84h->code == TYPE84_RSP_CODE) {
+ goto out;
+ }
+ t84h = reply->message;
+ if (t84h->code == TYPE84_RSP_CODE) {
length = min(PCICA_MAX_RESPONSE_SIZE, (int) t84h->len);
memcpy(msg->message, reply->message, length);
} else
memcpy(msg->message, reply->message, sizeof error_reply);
+out:
complete((struct completion *) msg->private);
}
@@ -279,9 +288,11 @@ static long zcrypt_pcica_modexpo(struct zcrypt_device *zdev,
struct completion work;
int rc;
- ap_msg.message = (void *) kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL);
+ ap_init_message(&ap_msg);
+ ap_msg.message = kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL);
if (!ap_msg.message)
return -ENOMEM;
+ ap_msg.receive = zcrypt_pcica_receive;
ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
atomic_inc_return(&zcrypt_step);
ap_msg.private = &work;
@@ -290,18 +301,13 @@ static long zcrypt_pcica_modexpo(struct zcrypt_device *zdev,
goto out_free;
init_completion(&work);
ap_queue_message(zdev->ap_dev, &ap_msg);
- rc = wait_for_completion_interruptible_timeout(
- &work, PCICA_CLEANUP_TIME);
- if (rc > 0)
+ rc = wait_for_completion_interruptible(&work);
+ if (rc == 0)
rc = convert_response(zdev, &ap_msg, mex->outputdata,
mex->outputdatalength);
- else {
- /* Signal pending or message timed out. */
+ else
+ /* Signal pending. */
ap_cancel_message(zdev->ap_dev, &ap_msg);
- if (rc == 0)
- /* Message timed out. */
- rc = -ETIME;
- }
out_free:
kfree(ap_msg.message);
return rc;
@@ -321,9 +327,11 @@ static long zcrypt_pcica_modexpo_crt(struct zcrypt_device *zdev,
struct completion work;
int rc;
- ap_msg.message = (void *) kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL);
+ ap_init_message(&ap_msg);
+ ap_msg.message = kmalloc(PCICA_MAX_MESSAGE_SIZE, GFP_KERNEL);
if (!ap_msg.message)
return -ENOMEM;
+ ap_msg.receive = zcrypt_pcica_receive;
ap_msg.psmid = (((unsigned long long) current->pid) << 32) +
atomic_inc_return(&zcrypt_step);
ap_msg.private = &work;
@@ -332,18 +340,13 @@ static long zcrypt_pcica_modexpo_crt(struct zcrypt_device *zdev,
goto out_free;
init_completion(&work);
ap_queue_message(zdev->ap_dev, &ap_msg);
- rc = wait_for_completion_interruptible_timeout(
- &work, PCICA_CLEANUP_TIME);
- if (rc > 0)
+ rc = wait_for_completion_interruptible(&work);
+ if (rc == 0)
rc = convert_response(zdev, &ap_msg, crt->outputdata,
crt->outputdatalength);
- else {
- /* Signal pending or message timed out. */
+ else
+ /* Signal pending. */
ap_cancel_message(zdev->ap_dev, &ap_msg);
- if (rc == 0)
- /* Message timed out. */
- rc = -ETIME;
- }
out_free:
kfree(ap_msg.message);
return rc;
@@ -378,6 +381,7 @@ static int zcrypt_pcica_probe(struct ap_device *ap_dev)
zdev->min_mod_size = PCICA_MIN_MOD_SIZE;
zdev->max_mod_size = PCICA_MAX_MOD_SIZE;
zdev->speed_rating = PCICA_SPEED_RATING;
+ zdev->max_exp_bit_length = PCICA_MAX_MOD_SIZE;
ap_dev->reply = &zdev->reply;
ap_dev->private = zdev;
rc = zcrypt_device_register(zdev);
@@ -412,7 +416,5 @@ void zcrypt_pcica_exit(void)
ap_driver_unregister(&zcrypt_pcica_driver);
}
-#ifndef CONFIG_ZCRYPT_MONOLITHIC
module_init(zcrypt_pcica_init);
module_exit(zcrypt_pcica_exit);
-#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-07 15:35:55 +0000