crypto: hisilicon/qm - fix event queue depth to 2048

Increasing depth of 'event queue' from 1024 to 2048, which equals to twice
depth of 'completion queue'. It will fix the easily happened 'event queue
overflow' as using 1024 queue depth for 'event queue'.

Fixes: 263c9959c937("crypto: hisilicon - add queue management driver...")
Signed-off-by: Shukun Tan <tanshukun1@huawei.com>
Signed-off-by: Yang Shen <shenyang39@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index b9bff96f6e22ee294298d6cc8de5b536ef4eb2ed..791a46992beb5aa50b17b7df1c3efd7f357b6f80 100644 (file)
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -181,6 +181,7 @@
 #define QM_PCI_COMMAND_INVALID         ~0
 
 #define QM_SQE_ADDR_MASK               GENMASK(7, 0)
+#define QM_EQ_DEPTH                    (1024 * 2)
 
 #define QM_MK_CQC_DW3_V1(hop_num, pg_sz, buf_sz, cqe_sz) \
        (((hop_num) << QM_CQ_HOP_NUM_SHIFT)     | \
@@ -652,7 +653,7 @@ static void qm_work_process(struct work_struct *work)
                qp = qm_to_hisi_qp(qm, eqe);
                qm_poll_qp(qp, qm);
 
-               if (qm->status.eq_head == QM_Q_DEPTH - 1) {
+               if (qm->status.eq_head == QM_EQ_DEPTH - 1) {
                        qm->status.eqc_phase = !qm->status.eqc_phase;
                        eqe = qm->eqe;
                        qm->status.eq_head = 0;
@@ -661,7 +662,7 @@ static void qm_work_process(struct work_struct *work)
                        qm->status.eq_head++;
                }
 
-               if (eqe_num == QM_Q_DEPTH / 2 - 1) {
+               if (eqe_num == QM_EQ_DEPTH / 2 - 1) {
                        eqe_num = 0;
                        qm_db(qm, 0, QM_DOORBELL_CMD_EQ, qm->status.eq_head, 0);
                }
@@ -1371,7 +1372,13 @@ static int qm_eq_aeq_dump(struct hisi_qm *qm, const char *s,
                return -EINVAL;
 
        ret = kstrtou32(s, 0, &xeqe_id);
-       if (ret || xeqe_id >= QM_Q_DEPTH) {
+       if (ret)
+               return -EINVAL;
+
+       if (!strcmp(name, "EQE") && xeqe_id >= QM_EQ_DEPTH) {
+               dev_err(dev, "Please input eqe num (0-%d)", QM_EQ_DEPTH - 1);
+               return -EINVAL;
+       } else if (!strcmp(name, "AEQE") && xeqe_id >= QM_Q_DEPTH) {
                dev_err(dev, "Please input aeqe num (0-%d)", QM_Q_DEPTH - 1);
                return -EINVAL;
        }
@@ -2285,7 +2292,7 @@ static int hisi_qm_memory_init(struct hisi_qm *qm)
 } while (0)
 
        idr_init(&qm->qp_idr);
-       qm->qdma.size = QMC_ALIGN(sizeof(struct qm_eqe) * QM_Q_DEPTH) +
+       qm->qdma.size = QMC_ALIGN(sizeof(struct qm_eqe) * QM_EQ_DEPTH) +
                        QMC_ALIGN(sizeof(struct qm_aeqe) * QM_Q_DEPTH) +
                        QMC_ALIGN(sizeof(struct qm_sqc) * qm->qp_num) +
                        QMC_ALIGN(sizeof(struct qm_cqc) * qm->qp_num);
@@ -2295,7 +2302,7 @@ static int hisi_qm_memory_init(struct hisi_qm *qm)
        if (!qm->qdma.va)
                return -ENOMEM;
 
-       QM_INIT_BUF(qm, eqe, QM_Q_DEPTH);
+       QM_INIT_BUF(qm, eqe, QM_EQ_DEPTH);
        QM_INIT_BUF(qm, aeqe, QM_Q_DEPTH);
        QM_INIT_BUF(qm, sqc, qm->qp_num);
        QM_INIT_BUF(qm, cqc, qm->qp_num);
@@ -2465,7 +2472,7 @@ static int qm_eq_ctx_cfg(struct hisi_qm *qm)
        eqc->base_h = cpu_to_le32(upper_32_bits(qm->eqe_dma));
        if (qm->ver == QM_HW_V1)
                eqc->dw3 = cpu_to_le32(QM_EQE_AEQE_SIZE);
-       eqc->dw6 = cpu_to_le32((QM_Q_DEPTH - 1) | (1 << QM_EQC_PHASE_SHIFT));
+       eqc->dw6 = cpu_to_le32((QM_EQ_DEPTH - 1) | (1 << QM_EQC_PHASE_SHIFT));
        ret = qm_mb(qm, QM_MB_CMD_EQC, eqc_dma, 0, 0);
        dma_unmap_single(dev, eqc_dma, sizeof(struct qm_eqc), DMA_TO_DEVICE);
        kfree(eqc);