crypto: hisilicon/qm - stop function and write data to memory

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7AUVE
CVE: NA

----------------------------------------------------------------------

Before the system is shutdown, the accelerator driver
needs to stop the device and write data to the memory.
This prevents the accelerator from accessing addresses
and writing data to the memory after the memory is reclaimed
by the system, causing device exceptions and generating NFE errors.
Signed-off-by: NWeili Qian <qianweili@huawei.com>
Signed-off-by: NJiangShui Yang <yangjiangshui@h-partners.com>

drivers/crypto/hisilicon/qm.c

@@ -1021,7 +1021,7 @@ static void qm_reset_function(struct hisi_qm *qm)
 		return;
 	}
 
-	ret = hisi_qm_stop(qm, QM_FLR);
+	ret = hisi_qm_stop(qm, QM_DOWN);
 	if (ret) {
 		dev_err(dev, "failed to stop qm when reset function\n");
 		goto clear_bit;
@@ -3397,7 +3397,7 @@ int hisi_qm_stop(struct hisi_qm *qm, enum qm_stop_reason r)
 	}
 
 	if (qm->status.stop_reason == QM_SOFT_RESET ||
-	    qm->status.stop_reason == QM_FLR) {
+	    qm->status.stop_reason == QM_DOWN) {
 		hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET);
 		ret = qm_stop_started_qp(qm);
 		if (ret < 0) {
@@ -4693,11 +4693,11 @@ void hisi_qm_reset_prepare(struct pci_dev *pdev)
 	if (qm->fun_type == QM_HW_PF)
 		qm_cmd_uninit(qm);
 
-	ret = qm_try_stop_vfs(qm, QM_PF_FLR_PREPARE, QM_FLR);
+	ret = qm_try_stop_vfs(qm, QM_PF_FLR_PREPARE, QM_DOWN);
 	if (ret)
 		pci_err(pdev, "failed to stop vfs by pf in FLR.\n");
 
-	ret = hisi_qm_stop(qm, QM_FLR);
+	ret = hisi_qm_stop(qm, QM_DOWN);
 	if (ret) {
 		pci_err(pdev, "Failed to stop QM, ret = %d.\n", ret);
 		hisi_qm_set_hw_reset(qm, QM_RESET_STOP_TX_OFFSET);
@@ -4795,10 +4795,11 @@ void hisi_qm_dev_shutdown(struct pci_dev *pdev)
 	struct hisi_qm *qm = pci_get_drvdata(pdev);
 	int ret;
 
-	ret = hisi_qm_stop(qm, QM_NORMAL);
+	ret = hisi_qm_stop(qm, QM_DOWN);
 	if (ret)
 		dev_err(&pdev->dev, "Fail to stop qm in shutdown!\n");
 
+	hisi_qm_cache_wb(qm);
 	qm_remove_uacce(qm);
 }
 EXPORT_SYMBOL_GPL(hisi_qm_dev_shutdown);
@@ -4963,7 +4964,7 @@ static void qm_handle_cmd_msg(struct hisi_qm *qm, u32 fun_num)
 	cmd = msg & QM_MB_CMD_DATA_MASK;
 	switch (cmd) {
 	case QM_PF_FLR_PREPARE:
-		qm_pf_reset_vf_process(qm, QM_FLR);
+		qm_pf_reset_vf_process(qm, QM_DOWN);
 		break;
 	case QM_PF_SRST_PREPARE:
 		qm_pf_reset_vf_process(qm, QM_SOFT_RESET);

include/linux/hisi_acc_qm.h

@@ -105,7 +105,7 @@
 enum qm_stop_reason {
 	QM_NORMAL,
 	QM_SOFT_RESET,
-	QM_FLR,
+	QM_DOWN,
 };
 
 enum qm_state {