From: Yu'an Wang wangyuan46@huawei.com

driver inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4YKIJ CVE: NA

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In order to prevent an error when the hardware writes back cache, the driver should write back the hardware cache before flr and poweroff. If vfs is enabled, we should process abnormal scenes of the whole vfs.

Signed-off-by: Yu'an Wang wangyuan46@huawei.com Reviewed-by: Weili Qian qianweili@huawei.com Reviewed-by: Ling Mingqiang lingmingqiang@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- drivers/crypto/hisilicon/qm.c | 31 ++++++++++++++++++++++--------- 1 file changed, 22 insertions(+), 9 deletions(-)

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index 8fa855fd2387..e0fd83465dce 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -2772,6 +2772,8 @@ void hisi_qm_dev_shutdown(struct pci_dev *pdev) ret = hisi_qm_stop(qm, QM_NORMAL); if (ret) dev_err(&pdev->dev, "Fail to stop qm in shutdown!\n"); + + hisi_qm_cache_wb(qm); } EXPORT_SYMBOL_GPL(hisi_qm_dev_shutdown);

@@ -3718,12 +3720,16 @@ static int qm_vf_reset_prepare(struct pci_dev *pdev, pci_save_state(dev);

ret = hisi_qm_stop(qm, stop_reason); - if (ret) - goto prepare_fail; + if (ret) { + hisi_qm_set_hw_reset(qm, + QM_RESET_STOP_TX_OFFSET); + hisi_qm_set_hw_reset(qm, + QM_RESET_STOP_RX_OFFSET); + atomic_set(&qm->status.flags, QM_STOP); + } } }

-prepare_fail: mutex_unlock(&qm_list->lock); return ret; } @@ -4117,19 +4123,26 @@ void hisi_qm_reset_prepare(struct pci_dev *pdev)

if (qm->vfs_num) { ret = qm_vf_reset_prepare(pdev, qm->qm_list, QM_FLR); - if (ret) { - pci_err(pdev, "Fails to prepare reset!\n"); - return; - } + if (ret) + pci_err(pdev, "Failed to stop vfs!\n"); }

ret = hisi_qm_stop(qm, QM_FLR); if (ret) { - pci_err(pdev, "Fails to stop QM!\n"); - return; + pci_err(pdev, "Failed to stop QM!\n"); + goto err_prepare; }

+ hisi_qm_cache_wb(qm); pci_info(pdev, "FLR resetting...\n"); + return; + +err_prepare: + pci_info(pdev, "FLR resetting prepare failed!\n"); + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET); + hisi_qm_set_hw_reset(qm, QM_RESET_STOP_RX_OFFSET); + atomic_set(&qm->status.flags, QM_STOP); + hisi_qm_cache_wb(qm); } EXPORT_SYMBOL_GPL(hisi_qm_reset_prepare);