| Message ID | 20220303230131.2103-8-shameerali.kolothum.thodi@huawei.com |
|---|---|
| State | New |
| Headers | show |
| Series | vfio/hisilicon: add ACC live migration driver | expand |
> From: Longfang Liu <liulongfang@huawei.com>> > 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@huawei.com> > Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Acked-by: Zhou Wang <wangzhou1@hisilicon.com> 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; >
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;