diff options
Diffstat (limited to 'drivers/s390/crypto/ap_bus.c')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 77 |
1 files changed, 49 insertions, 28 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 327255da115a..4feb27215ab6 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -169,6 +169,19 @@ static int ap_configuration_available(void) return test_facility(12); } +static inline struct ap_queue_status +__pqap_tapq(ap_qid_t qid, unsigned long *info) +{ + register unsigned long reg0 asm ("0") = qid; + register struct ap_queue_status reg1 asm ("1"); + register unsigned long reg2 asm ("2") = 0UL; + + asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */ + : "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc"); + *info = reg2; + return reg1; +} + /** * ap_test_queue(): Test adjunct processor queue. * @qid: The AP queue number @@ -179,17 +192,15 @@ static int ap_configuration_available(void) static inline struct ap_queue_status ap_test_queue(ap_qid_t qid, unsigned long *info) { - register unsigned long reg0 asm ("0") = qid; - register struct ap_queue_status reg1 asm ("1"); - register unsigned long reg2 asm ("2") = 0UL; + struct ap_queue_status aqs; + unsigned long _info; if (test_facility(15)) - reg0 |= 1UL << 23; /* set APFT T bit*/ - asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */ - : "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc"); + qid |= 1UL << 23; /* set APFT T bit*/ + aqs = __pqap_tapq(qid, &_info); if (info) - *info = reg2; - return reg1; + *info = _info; + return aqs; } /** @@ -237,14 +248,12 @@ ap_queue_interruption_control(ap_qid_t qid, void *ind) * * Returns 0 on success, or -EOPNOTSUPP. */ -static inline int ap_query_configuration(void) +static inline int __ap_query_configuration(void) { register unsigned long reg0 asm ("0") = 0x04000000UL; register unsigned long reg1 asm ("1") = -EINVAL; register void *reg2 asm ("2") = (void *) ap_configuration; - if (!ap_configuration) - return -EOPNOTSUPP; asm volatile( ".long 0xb2af0000\n" /* PQAP(QCI) */ "0: la %1,0\n" @@ -257,6 +266,13 @@ static inline int ap_query_configuration(void) return reg1; } +static inline int ap_query_configuration(void) +{ + if (!ap_configuration) + return -EOPNOTSUPP; + return __ap_query_configuration(); +} + /** * ap_init_configuration(): Allocate and query configuration array. */ @@ -346,6 +362,26 @@ static int ap_queue_enable_interruption(struct ap_device *ap_dev, void *ind) } } +static inline struct ap_queue_status +__nqap(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) +{ + typedef struct { char _[length]; } msgblock; + register unsigned long reg0 asm ("0") = qid | 0x40000000UL; + register struct ap_queue_status reg1 asm ("1"); + register unsigned long reg2 asm ("2") = (unsigned long) msg; + register unsigned long reg3 asm ("3") = (unsigned long) length; + register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32); + register unsigned long reg5 asm ("5") = psmid & 0xffffffff; + + asm volatile ( + "0: .long 0xb2ad0042\n" /* NQAP */ + " brc 2,0b" + : "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3) + : "d" (reg4), "d" (reg5), "m" (*(msgblock *) msg) + : "cc"); + return reg1; +} + /** * __ap_send(): Send message to adjunct processor queue. * @qid: The AP queue number @@ -363,24 +399,9 @@ static inline struct ap_queue_status __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; - register struct ap_queue_status reg1 asm ("1"); - register unsigned long reg2 asm ("2") = (unsigned long) msg; - register unsigned long reg3 asm ("3") = (unsigned long) length; - register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32); - register unsigned long reg5 asm ("5") = psmid & 0xffffffff; - if (special == 1) - reg0 |= 0x400000UL; - - asm volatile ( - "0: .long 0xb2ad0042\n" /* NQAP */ - " brc 2,0b" - : "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3) - : "d" (reg4), "d" (reg5), "m" (*(msgblock *) msg) - : "cc" ); - return reg1; + qid |= 0x400000UL; + return __nqap(qid, psmid, msg, length); } int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length) |