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path: root/drivers/s390/crypto
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Diffstat (limited to 'drivers/s390/crypto')
-rw-r--r--drivers/s390/crypto/zcrypt_api.c105
1 files changed, 81 insertions, 24 deletions
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 7ca25e77bd6a..854a6e58dfea 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -41,6 +41,9 @@
#include <linux/debugfs.h>
#include <asm/debug.h>
+#define CREATE_TRACE_POINTS
+#include <asm/trace/zcrypt.h>
+
#include "zcrypt_api.h"
#include "zcrypt_debug.h"
@@ -55,6 +58,12 @@ MODULE_DESCRIPTION("Cryptographic Coprocessor interface, " \
"Copyright IBM Corp. 2001, 2012");
MODULE_LICENSE("GPL");
+/*
+ * zcrypt tracepoint functions
+ */
+EXPORT_TRACEPOINT_SYMBOL(s390_zcrypt_req);
+EXPORT_TRACEPOINT_SYMBOL(s390_zcrypt_rep);
+
static int zcrypt_hwrng_seed = 1;
module_param_named(hwrng_seed, zcrypt_hwrng_seed, int, S_IRUSR|S_IRGRP);
MODULE_PARM_DESC(hwrng_seed, "Turn on/off hwrng auto seed, default is 1 (on).");
@@ -224,10 +233,15 @@ static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex)
struct zcrypt_queue *zq, *pref_zq;
unsigned int weight, pref_weight;
unsigned int func_code;
- int rc;
+ int qid = 0, rc = -ENODEV;
+
+ trace_s390_zcrypt_req(mex, TP_ICARSAMODEXPO);
+
+ if (mex->outputdatalength < mex->inputdatalength) {
+ rc = -EINVAL;
+ goto out;
+ }
- if (mex->outputdatalength < mex->inputdatalength)
- return -EINVAL;
/*
* As long as outputdatalength is big enough, we can set the
* outputdatalength equal to the inputdatalength, since that is the
@@ -237,7 +251,7 @@ static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex)
rc = get_rsa_modex_fc(mex, &func_code);
if (rc)
- return rc;
+ goto out;
pref_zc = NULL;
pref_zq = NULL;
@@ -269,15 +283,21 @@ static long zcrypt_rsa_modexpo(struct ica_rsa_modexpo *mex)
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
spin_unlock(&zcrypt_list_lock);
- if (!pref_zq)
- return -ENODEV;
+ if (!pref_zq) {
+ rc = -ENODEV;
+ goto out;
+ }
+ qid = pref_zq->queue->qid;
rc = pref_zq->ops->rsa_modexpo(pref_zq, mex);
spin_lock(&zcrypt_list_lock);
zcrypt_drop_queue(pref_zc, pref_zq, weight);
spin_unlock(&zcrypt_list_lock);
+out:
+ trace_s390_zcrypt_rep(mex, func_code, rc,
+ AP_QID_CARD(qid), AP_QID_QUEUE(qid));
return rc;
}
@@ -287,10 +307,15 @@ static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt)
struct zcrypt_queue *zq, *pref_zq;
unsigned int weight, pref_weight;
unsigned int func_code;
- int rc;
+ int qid = 0, rc = -ENODEV;
+
+ trace_s390_zcrypt_req(crt, TP_ICARSACRT);
+
+ if (crt->outputdatalength < crt->inputdatalength) {
+ rc = -EINVAL;
+ goto out;
+ }
- if (crt->outputdatalength < crt->inputdatalength)
- return -EINVAL;
/*
* As long as outputdatalength is big enough, we can set the
* outputdatalength equal to the inputdatalength, since that is the
@@ -300,7 +325,7 @@ static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt)
rc = get_rsa_crt_fc(crt, &func_code);
if (rc)
- return rc;
+ goto out;
pref_zc = NULL;
pref_zq = NULL;
@@ -332,15 +357,21 @@ static long zcrypt_rsa_crt(struct ica_rsa_modexpo_crt *crt)
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
spin_unlock(&zcrypt_list_lock);
- if (!pref_zq)
- return -ENODEV;
+ if (!pref_zq) {
+ rc = -ENODEV;
+ goto out;
+ }
+ qid = pref_zq->queue->qid;
rc = pref_zq->ops->rsa_modexpo_crt(pref_zq, crt);
spin_lock(&zcrypt_list_lock);
zcrypt_drop_queue(pref_zc, pref_zq, weight);
spin_unlock(&zcrypt_list_lock);
+out:
+ trace_s390_zcrypt_rep(crt, func_code, rc,
+ AP_QID_CARD(qid), AP_QID_QUEUE(qid));
return rc;
}
@@ -352,11 +383,13 @@ static long zcrypt_send_cprb(struct ica_xcRB *xcRB)
unsigned int weight, pref_weight;
unsigned int func_code;
unsigned short *domain;
- int rc;
+ int qid = 0, rc = -ENODEV;
+
+ trace_s390_zcrypt_req(xcRB, TB_ZSECSENDCPRB);
rc = get_cprb_fc(xcRB, &ap_msg, &func_code, &domain);
if (rc)
- return rc;
+ goto out;
pref_zc = NULL;
pref_zq = NULL;
@@ -391,18 +424,25 @@ static long zcrypt_send_cprb(struct ica_xcRB *xcRB)
pref_zq = zcrypt_pick_queue(pref_zc, pref_zq, weight);
spin_unlock(&zcrypt_list_lock);
- if (!pref_zq)
- return -ENODEV;
+ if (!pref_zq) {
+ rc = -ENODEV;
+ goto out;
+ }
/* in case of auto select, provide the correct domain */
+ qid = pref_zq->queue->qid;
if (*domain == (unsigned short) AUTOSELECT)
- *domain = AP_QID_QUEUE(pref_zq->queue->qid);
+ *domain = AP_QID_QUEUE(qid);
rc = pref_zq->ops->send_cprb(pref_zq, xcRB, &ap_msg);
spin_lock(&zcrypt_list_lock);
zcrypt_drop_queue(pref_zc, pref_zq, weight);
spin_unlock(&zcrypt_list_lock);
+
+out:
+ trace_s390_zcrypt_rep(xcRB, func_code, rc,
+ AP_QID_CARD(qid), AP_QID_QUEUE(qid));
return rc;
}
@@ -439,7 +479,9 @@ static long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb)
unsigned int weight, pref_weight;
unsigned int func_code;
struct ap_message ap_msg;
- int rc;
+ int qid = 0, rc = -ENODEV;
+
+ trace_s390_zcrypt_req(xcrb, TP_ZSENDEP11CPRB);
target_num = (unsigned short) xcrb->targets_num;
@@ -449,13 +491,17 @@ static long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb)
struct ep11_target_dev __user *uptr;
targets = kcalloc(target_num, sizeof(*targets), GFP_KERNEL);
- if (!targets)
- return -ENOMEM;
+ if (!targets) {
+ rc = -ENOMEM;
+ goto out;
+ }
uptr = (struct ep11_target_dev __force __user *) xcrb->targets;
if (copy_from_user(targets, uptr,
- target_num * sizeof(*targets)))
- return -EFAULT;
+ target_num * sizeof(*targets))) {
+ rc = -EFAULT;
+ goto out;
+ }
}
rc = get_ep11cprb_fc(xcrb, &ap_msg, &func_code);
@@ -501,6 +547,7 @@ static long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb)
goto out_free;
}
+ qid = pref_zq->queue->qid;
rc = pref_zq->ops->send_ep11_cprb(pref_zq, xcrb, &ap_msg);
spin_lock(&zcrypt_list_lock);
@@ -509,6 +556,9 @@ static long zcrypt_send_ep11_cprb(struct ep11_urb *xcrb)
out_free:
kfree(targets);
+out:
+ trace_s390_zcrypt_rep(xcrb, func_code, rc,
+ AP_QID_CARD(qid), AP_QID_QUEUE(qid));
return rc;
}
@@ -520,11 +570,13 @@ static long zcrypt_rng(char *buffer)
unsigned int func_code;
struct ap_message ap_msg;
unsigned int domain;
- int rc;
+ int qid = 0, rc = -ENODEV;
+
+ trace_s390_zcrypt_req(buffer, TP_HWRNGCPRB);
rc = get_rng_fc(&ap_msg, &func_code, &domain);
if (rc)
- return rc;
+ goto out;
pref_zc = NULL;
pref_zq = NULL;
@@ -555,11 +607,16 @@ static long zcrypt_rng(char *buffer)
if (!pref_zq)
return -ENODEV;
+ qid = pref_zq->queue->qid;
rc = pref_zq->ops->rng(pref_zq, buffer, &ap_msg);
spin_lock(&zcrypt_list_lock);
zcrypt_drop_queue(pref_zc, pref_zq, weight);
spin_unlock(&zcrypt_list_lock);
+
+out:
+ trace_s390_zcrypt_rep(buffer, func_code, rc,
+ AP_QID_CARD(qid), AP_QID_QUEUE(qid));
return rc;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-19 13:53:11 +0000