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| author | Harald Freudenberger <freude@linux.ibm.com> | 2022-09-07 18:04:03 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-03-20 11:12:49 +0100 |
| commit | 4bdf3c3956d863b6823daa185ee3ce3e3a432cf3 (patch) | |
| tree | 6e8f9178bf40c2a98374b0bd8bf5524718f85af6 | |
| parent | 088174960ebc197fab8af9b99e039bc5c0aa34e7 (diff) | |
| download | linux-4bdf3c3956d863b6823daa185ee3ce3e3a432cf3.tar.gz linux-4bdf3c3956d863b6823daa185ee3ce3e3a432cf3.tar.bz2 linux-4bdf3c3956d863b6823daa185ee3ce3e3a432cf3.zip | |
s390/ap: provide F bit parameter for ap_rapq() and ap_zapq()
Extent the ap inline functions ap_rapq() (calls PQAP(RAPQ))
and ap_zapq() (calls PQAP(ZAPQ)) with a new parameter to
enable the new architectured F bit which forces an
unassociate and/or unbind on a secure execution associated
and/or bound queue.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
| -rw-r--r-- | arch/s390/include/asm/ap.h | 12 | ||||
| -rw-r--r-- | drivers/s390/crypto/ap_queue.c | 4 | ||||
| -rw-r--r-- | drivers/s390/crypto/vfio_ap_ops.c | 2 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_cex2c.c | 2 |
4 files changed, 14 insertions, 6 deletions
diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h index ba8da3f02f35..3442e76d5e3d 100644 --- a/arch/s390/include/asm/ap.h +++ b/arch/s390/include/asm/ap.h @@ -159,14 +159,18 @@ static inline struct ap_queue_status ap_test_queue(ap_qid_t qid, int tbit, /** * ap_pqap_rapq(): Reset adjunct processor queue. * @qid: The AP queue number + * @fbit: if != 0 set F bit * * Returns AP queue status structure. */ -static inline struct ap_queue_status ap_rapq(ap_qid_t qid) +static inline struct ap_queue_status ap_rapq(ap_qid_t qid, int fbit) { unsigned long reg0 = qid | (1UL << 24); /* fc 1UL is RAPQ */ union ap_queue_status_reg reg1; + if (fbit) + reg0 |= 1UL << 22; + asm volatile( " lgr 0,%[reg0]\n" /* qid arg into gr0 */ " .insn rre,0xb2af0000,0,0\n" /* PQAP(RAPQ) */ @@ -180,14 +184,18 @@ static inline struct ap_queue_status ap_rapq(ap_qid_t qid) /** * ap_pqap_zapq(): Reset and zeroize adjunct processor queue. * @qid: The AP queue number + * @fbit: if != 0 set F bit * * Returns AP queue status structure. */ -static inline struct ap_queue_status ap_zapq(ap_qid_t qid) +static inline struct ap_queue_status ap_zapq(ap_qid_t qid, int fbit) { unsigned long reg0 = qid | (2UL << 24); /* fc 2UL is ZAPQ */ union ap_queue_status_reg reg1; + if (fbit) + reg0 |= 1UL << 22; + asm volatile( " lgr 0,%[reg0]\n" /* qid arg into gr0 */ " .insn rre,0xb2af0000,0,0\n" /* PQAP(ZAPQ) */ diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index 1c08b282987c..8517e1c54149 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -322,7 +322,7 @@ static enum ap_sm_wait ap_sm_reset(struct ap_queue *aq) { struct ap_queue_status status; - status = ap_rapq(aq->qid); + status = ap_rapq(aq->qid, 0); switch (status.response_code) { case AP_RESPONSE_NORMAL: case AP_RESPONSE_RESET_IN_PROGRESS: @@ -936,7 +936,7 @@ void ap_queue_remove(struct ap_queue *aq) * to the initial value AP_DEV_STATE_UNINITIATED. */ spin_lock_bh(&aq->lock); - ap_zapq(aq->qid); + ap_zapq(aq->qid, 0); aq->dev_state = AP_DEV_STATE_UNINITIATED; spin_unlock_bh(&aq->lock); } diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 31de464e4bb2..cfbcb864ab63 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -1657,7 +1657,7 @@ static int vfio_ap_mdev_reset_queue(struct vfio_ap_queue *q) if (!q) return 0; retry_zapq: - status = ap_zapq(q->apqn); + status = ap_zapq(q->apqn, 0); q->reset_rc = status.response_code; switch (status.response_code) { case AP_RESPONSE_NORMAL: diff --git a/drivers/s390/crypto/zcrypt_cex2c.c b/drivers/s390/crypto/zcrypt_cex2c.c index 78f8d68ffcb2..251b5bd3d19c 100644 --- a/drivers/s390/crypto/zcrypt_cex2c.c +++ b/drivers/s390/crypto/zcrypt_cex2c.c @@ -338,7 +338,7 @@ static int zcrypt_cex2c_queue_probe(struct ap_device *ap_dev) zq->queue = aq; zq->online = 1; atomic_set(&zq->load, 0); - ap_rapq(aq->qid); + ap_rapq(aq->qid, 0); rc = zcrypt_cex2c_rng_supported(aq); if (rc < 0) { zcrypt_queue_free(zq); |