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crypto: hisilicon/qm - disable queue when 'CQ' error

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If the hardware reports the 'CQ' overflow or 'CQE' error by the abnormal
interrupt, disable the queue and stop tasks send to hardware.

Signed-off-by: Weili Qian <qianweili@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Weili Qian 2021-12-11 19:25:19 +08:00 committed by Herbert Xu
parent 95f0b6d536
commit 696645d25b
1 changed files with 21 additions and 1 deletions
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22
drivers/crypto/hisilicon/qm.c
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@ -89,7 +89,10 @@
#define QM_AEQE_PHASE(aeqe) ((le32_to_cpu((aeqe)->dw0) >> 16) & 0x1)
#define QM_AEQE_TYPE_SHIFT 17
#define QM_AEQE_CQN_MASK GENMASK(15, 0)
#define QM_CQ_OVERFLOW 0
#define QM_EQ_OVERFLOW 1
#define QM_CQE_ERROR 2
#define QM_DOORBELL_CMD_SQ 0
#define QM_DOORBELL_CMD_CQ 1
@ -989,6 +992,15 @@ static void qm_set_qp_disable(struct hisi_qp *qp, int offset)
mb();
}
static void qm_disable_qp(struct hisi_qm *qm, u32 qp_id)
{
struct hisi_qp *qp = &qm->qp_array[qp_id];
qm_set_qp_disable(qp, QM_RESET_STOP_TX_OFFSET);
hisi_qm_stop_qp(qp);
qm_set_qp_disable(qp, QM_RESET_STOP_RX_OFFSET);
}
static void qm_reset_function(struct hisi_qm *qm)
{
struct hisi_qm *pf_qm = pci_get_drvdata(pci_physfn(qm->pdev));
@ -1022,16 +1034,24 @@ static irqreturn_t qm_aeq_thread(int irq, void *data)
{
struct hisi_qm *qm = data;
struct qm_aeqe *aeqe = qm->aeqe + qm->status.aeq_head;
u32 type;
u32 type, qp_id;
while (QM_AEQE_PHASE(aeqe) == qm->status.aeqc_phase) {
type = le32_to_cpu(aeqe->dw0) >> QM_AEQE_TYPE_SHIFT;
qp_id = le32_to_cpu(aeqe->dw0) & QM_AEQE_CQN_MASK;
switch (type) {
case QM_EQ_OVERFLOW:
dev_err(&qm->pdev->dev, "eq overflow, reset function\n");
qm_reset_function(qm);
return IRQ_HANDLED;
case QM_CQ_OVERFLOW:
dev_err(&qm->pdev->dev, "cq overflow, stop qp(%u)\n",
qp_id);
fallthrough;
case QM_CQE_ERROR:
qm_disable_qp(qm, qp_id);
break;
default:
dev_err(&qm->pdev->dev, "unknown error type %u\n",
type);