diff options
Diffstat (limited to 'drivers/crypto/hisilicon')
| -rw-r--r-- | drivers/crypto/hisilicon/qm.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 580709408cfc..1d67f94a1d56 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -2926,6 +2926,23 @@ static void hisi_qm_uacce_stop_queue(struct uacce_queue *q) hisi_qm_stop_qp(q->priv); } +static int hisi_qm_is_q_updated(struct uacce_queue *q) +{ + struct hisi_qp *qp = q->priv; + struct qm_cqe *cqe = qp->cqe + qp->qp_status.cq_head; + int updated = 0; + + while (QM_CQE_PHASE(cqe) == qp->qp_status.cqc_phase) { + /* make sure to read data from memory */ + dma_rmb(); + qm_cq_head_update(qp); + cqe = qp->cqe + qp->qp_status.cq_head; + updated = 1; + } + + return updated; +} + static void qm_set_sqctype(struct uacce_queue *q, u16 type) { struct hisi_qm *qm = q->uacce->priv; @@ -2971,6 +2988,7 @@ static const struct uacce_ops uacce_qm_ops = { .stop_queue = hisi_qm_uacce_stop_queue, .mmap = hisi_qm_uacce_mmap, .ioctl = hisi_qm_uacce_ioctl, + .is_q_updated = hisi_qm_is_q_updated, }; static int qm_alloc_uacce(struct hisi_qm *qm) |