diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 20 | ||||
| -rw-r--r-- | drivers/s390/crypto/ap_bus.h | 3 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_pcixcc.c | 5 |
3 files changed, 23 insertions, 5 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 1294876..21077f4 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -282,6 +282,7 @@ static int ap_queue_enable_interruption(ap_qid_t qid, void *ind) * @psmid: The program supplied message identifier * @msg: The message text * @length: The message length + * @special: Special Bit * * Returns AP queue status structure. * Condition code 1 on NQAP can't happen because the L bit is 1. @@ -289,7 +290,8 @@ static int ap_queue_enable_interruption(ap_qid_t qid, void *ind) * because a segment boundary was reached. The NQAP is repeated. */ static inline struct ap_queue_status -__ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) +__ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length, + unsigned int special) { typedef struct { char _[length]; } msgblock; register unsigned long reg0 asm ("0") = qid | 0x40000000UL; @@ -299,6 +301,9 @@ __ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32); register unsigned long reg5 asm ("5") = (unsigned int) psmid; + if (special == 1) + reg0 |= 0x400000UL; + asm volatile ( "0: .long 0xb2ad0042\n" /* DQAP */ " brc 2,0b" @@ -312,13 +317,15 @@ int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) { struct ap_queue_status status; - status = __ap_send(qid, psmid, msg, length); + status = __ap_send(qid, psmid, msg, length, 0); switch (status.response_code) { case AP_RESPONSE_NORMAL: return 0; case AP_RESPONSE_Q_FULL: case AP_RESPONSE_RESET_IN_PROGRESS: return -EBUSY; + case AP_RESPONSE_REQ_FAC_NOT_INST: + return -EINVAL; default: /* Device is gone. */ return -ENODEV; } @@ -1008,7 +1015,7 @@ static int ap_probe_device_type(struct ap_device *ap_dev) } status = __ap_send(ap_dev->qid, 0x0102030405060708ULL, - msg, sizeof(msg)); + msg, sizeof(msg), 0); if (status.response_code != AP_RESPONSE_NORMAL) { rc = -ENODEV; goto out_free; @@ -1243,7 +1250,7 @@ static int ap_poll_write(struct ap_device *ap_dev, unsigned long *flags) /* Start the next request on the queue. */ ap_msg = list_entry(ap_dev->requestq.next, struct ap_message, list); status = __ap_send(ap_dev->qid, ap_msg->psmid, - ap_msg->message, ap_msg->length); + ap_msg->message, ap_msg->length, ap_msg->special); switch (status.response_code) { case AP_RESPONSE_NORMAL: atomic_inc(&ap_poll_requests); @@ -1261,6 +1268,7 @@ static int ap_poll_write(struct ap_device *ap_dev, unsigned long *flags) *flags |= 2; break; case AP_RESPONSE_MESSAGE_TOO_BIG: + case AP_RESPONSE_REQ_FAC_NOT_INST: return -EINVAL; default: return -ENODEV; @@ -1302,7 +1310,8 @@ static int __ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_ms if (list_empty(&ap_dev->requestq) && ap_dev->queue_count < ap_dev->queue_depth) { status = __ap_send(ap_dev->qid, ap_msg->psmid, - ap_msg->message, ap_msg->length); + ap_msg->message, ap_msg->length, + ap_msg->special); switch (status.response_code) { case AP_RESPONSE_NORMAL: list_add_tail(&ap_msg->list, &ap_dev->pendingq); @@ -1317,6 +1326,7 @@ static int __ap_queue_message(struct ap_device *ap_dev, struct ap_message *ap_ms ap_dev->requestq_count++; ap_dev->total_request_count++; return -EBUSY; + case AP_RESPONSE_REQ_FAC_NOT_INST: case AP_RESPONSE_MESSAGE_TOO_BIG: ap_dev->drv->receive(ap_dev, ap_msg, ERR_PTR(-EINVAL)); return -EINVAL; diff --git a/drivers/s390/crypto/ap_bus.h b/drivers/s390/crypto/ap_bus.h index fcf2497..c374667 100644 --- a/drivers/s390/crypto/ap_bus.h +++ b/drivers/s390/crypto/ap_bus.h @@ -87,6 +87,7 @@ struct ap_queue_status { #define AP_RESPONSE_INDEX_TOO_BIG 0x11 #define AP_RESPONSE_NO_FIRST_PART 0x13 #define AP_RESPONSE_MESSAGE_TOO_BIG 0x15 +#define AP_RESPONSE_REQ_FAC_NOT_INST 0x16 /* * Known device types @@ -161,6 +162,7 @@ struct ap_message { size_t length; /* Message length. */ void *private; /* ap driver private pointer. */ + unsigned int special:1; /* Used for special commands. */ }; #define AP_DEVICE(dt) \ @@ -176,6 +178,7 @@ static inline void ap_init_message(struct ap_message *ap_msg) { ap_msg->psmid = 0; ap_msg->length = 0; + ap_msg->special = 0; } /* diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c index 11ca6dc..addaadd 100644 --- a/drivers/s390/crypto/zcrypt_pcixcc.c +++ b/drivers/s390/crypto/zcrypt_pcixcc.c @@ -326,6 +326,11 @@ static int XCRB_msg_to_type6CPRB_msgX(struct zcrypt_device *zdev, function_code = ((unsigned char *)&msg->cprbx) + msg->cprbx.cprb_len; memcpy(msg->hdr.function_code, function_code, sizeof(msg->hdr.function_code)); + if (memcmp(function_code, "US", 2) == 0) + ap_msg->special = 1; + else + ap_msg->special = 0; + /* copy data block */ if (xcRB->request_data_length && copy_from_user(req_data, xcRB->request_data_address, |