> From: Longfang Liu <liulongfang@xxxxxxxxxx>>
> We use VF QM state register to record the status of the QM configuration
> state. This will be used in the ACC migration driver to determine whether
> we can safely save and restore the QM data.
>
> Signed-off-by: Longfang Liu <liulongfang@xxxxxxxxxx>
> Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@xxxxxxxxxx>
Acked-by: Zhou Wang <wangzhou1@xxxxxxxxxxxxx>
Best,
Zhou
> ---
> drivers/crypto/hisilicon/qm.c | 8 ++++++++
> include/linux/hisi_acc_qm.h | 6 ++++++
> 2 files changed, 14 insertions(+)
>
> diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
> index c88e013371af..6a8776db38b5 100644
> --- a/drivers/crypto/hisilicon/qm.c
> +++ b/drivers/crypto/hisilicon/qm.c
> @@ -3492,6 +3492,12 @@ static void hisi_qm_pci_uninit(struct hisi_qm *qm)
> pci_disable_device(pdev);
> }
>
> +static void hisi_qm_set_state(struct hisi_qm *qm, u8 state)
> +{
> + if (qm->ver > QM_HW_V2 && qm->fun_type == QM_HW_VF)
> + writel(state, qm->io_base + QM_VF_STATE);
> +}
> +
> /**
> * hisi_qm_uninit() - Uninitialize qm.
> * @qm: The qm needed uninit.
> @@ -3520,6 +3526,7 @@ void hisi_qm_uninit(struct hisi_qm *qm)
> dma_free_coherent(dev, qm->qdma.size,
> qm->qdma.va, qm->qdma.dma);
> }
> + hisi_qm_set_state(qm, QM_NOT_READY);
> up_write(&qm->qps_lock);
>
> qm_irq_unregister(qm);
> @@ -3745,6 +3752,7 @@ int hisi_qm_start(struct hisi_qm *qm)
> if (!ret)
> atomic_set(&qm->status.flags, QM_START);
>
> + hisi_qm_set_state(qm, QM_READY);
> err_unlock:
> up_write(&qm->qps_lock);
> return ret;
> diff --git a/include/linux/hisi_acc_qm.h b/include/linux/hisi_acc_qm.h
> index 00f2a4db8723..177f7b7cd414 100644
> --- a/include/linux/hisi_acc_qm.h
> +++ b/include/linux/hisi_acc_qm.h
> @@ -67,6 +67,7 @@
> #define QM_DB_RAND_SHIFT_V2 16
> #define QM_DB_INDEX_SHIFT_V2 32
> #define QM_DB_PRIORITY_SHIFT_V2 48
> +#define QM_VF_STATE 0x60
>
> /* qm cache */
> #define QM_CACHE_CTL 0x100050
> @@ -162,6 +163,11 @@ enum qm_debug_file {
> DEBUG_FILE_NUM,
> };
>
> +enum qm_vf_state {
> + QM_READY = 0,
> + QM_NOT_READY,
> +};
> +
> struct qm_dfx {
> atomic64_t err_irq_cnt;
> atomic64_t aeq_irq_cnt;
>
