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From:   Yang Shen <shenyang39@huawei.com>
To:     <herbert@gondor.apana.org.au>, <davem@davemloft.net>
CC:     <linux-crypto@vger.kernel.org>, <xuzaibo@huawei.com>,
        <wangzhou1@hisilicon.com>
Subject: [Patch v2 9/9] crypto: hisilicon/qm - register callback function to 'pci_driver.shutdown'
Date:   Wed, 1 Jul 2020 15:19:55 +0800
Message-ID: <1593587995-7391-10-git-send-email-shenyang39@huawei.com>
In-Reply-To: <1593587995-7391-1-git-send-email-shenyang39@huawei.com>
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Sender: linux-crypto-owner@vger.kernel.org
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Since the drivers such as HPRE/SEC/ZIP do not implement
'pci_driver.shutdow', a RAS will be triggered at OS rebooting or shutting
down as the hardware device is processing request.
The log looks like this:
    NOTICE:  [NimbusSecNodeType1]:[2372L]This is sec, Base = 0x141800000
    NOTICE:  [NimbusSecHandle]:[2319L] SecIntSt = 0x3
    NOTICE:  [NimbusSecHandle]:[2320L] SecQmIntStatus = 0x2
    NOTICE:  [PrintSecurityType]:[344L] SecurityType is RECOVERABLE!

This patch offers a new API in qm to shutdown devices, and add shutdown
callbacks in ACC driver based on this new API.

So the running devices will be stopped when the OS reboot or shutdown.

Signed-off-by: Yang Shen <shenyang39@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
---
 drivers/crypto/hisilicon/hpre/hpre_main.c |  1 +
 drivers/crypto/hisilicon/qm.c             | 17 +++++++++++++++++
 drivers/crypto/hisilicon/qm.h             |  1 +
 drivers/crypto/hisilicon/sec2/sec_main.c  |  1 +
 drivers/crypto/hisilicon/zip/zip_main.c   |  1 +
 5 files changed, 21 insertions(+)

diff --git a/drivers/crypto/hisilicon/hpre/hpre_main.c b/drivers/crypto/hisilicon/hpre/hpre_main.c
index aff2839..1a39442 100644
--- a/drivers/crypto/hisilicon/hpre/hpre_main.c
+++ b/drivers/crypto/hisilicon/hpre/hpre_main.c
@@ -927,6 +927,7 @@ static struct pci_driver hpre_pci_driver = {
 	.remove			= hpre_remove,
 	.sriov_configure	= hisi_qm_sriov_configure,
 	.err_handler		= &hpre_err_handler,
+	.shutdown		= hisi_qm_dev_shutdown,
 };
 
 static void hpre_register_debugfs(void)
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 8327365..0920d77 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -3853,6 +3853,23 @@ static int qm_irq_register(struct hisi_qm *qm)
 	return ret;
 }
 
+/**
+ * hisi_qm_dev_shutdown() - Shutdown device.
+ * @pdev: The device will be shutdown.
+ *
+ * This function will stop qm when OS shutdown or rebooting.
+ */
+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);
+	if (ret)
+		dev_err(&pdev->dev, "Fail to stop qm in shutdown!\n");
+}
+EXPORT_SYMBOL_GPL(hisi_qm_dev_shutdown);
+
 static void hisi_qm_controller_reset(struct work_struct *rst_work)
 {
 	struct hisi_qm *qm = container_of(rst_work, struct hisi_qm, rst_work);
diff --git a/drivers/crypto/hisilicon/qm.h b/drivers/crypto/hisilicon/qm.h
index bd00897..233ed09e 100644
--- a/drivers/crypto/hisilicon/qm.h
+++ b/drivers/crypto/hisilicon/qm.h
@@ -378,4 +378,5 @@ int hisi_qm_alloc_qps_node(struct hisi_qm_list *qm_list, int qp_num,
 void hisi_qm_free_qps(struct hisi_qp **qps, int qp_num);
 int hisi_qm_alg_register(struct hisi_qm *qm, struct hisi_qm_list *qm_list);
 void hisi_qm_alg_unregister(struct hisi_qm *qm, struct hisi_qm_list *qm_list);
+void hisi_qm_dev_shutdown(struct pci_dev *pdev);
 #endif
diff --git a/drivers/crypto/hisilicon/sec2/sec_main.c b/drivers/crypto/hisilicon/sec2/sec_main.c
index d9c162d2..a146095 100644
--- a/drivers/crypto/hisilicon/sec2/sec_main.c
+++ b/drivers/crypto/hisilicon/sec2/sec_main.c
@@ -949,6 +949,7 @@ static struct pci_driver sec_pci_driver = {
 	.remove = sec_remove,
 	.err_handler = &sec_err_handler,
 	.sriov_configure = hisi_qm_sriov_configure,
+	.shutdown = hisi_qm_dev_shutdown,
 };
 
 static void sec_register_debugfs(void)
diff --git a/drivers/crypto/hisilicon/zip/zip_main.c b/drivers/crypto/hisilicon/zip/zip_main.c
index 72e2cc0..beeb20e 100644
--- a/drivers/crypto/hisilicon/zip/zip_main.c
+++ b/drivers/crypto/hisilicon/zip/zip_main.c
@@ -879,6 +879,7 @@ static struct pci_driver hisi_zip_pci_driver = {
 	.sriov_configure	= IS_ENABLED(CONFIG_PCI_IOV) ?
 					hisi_qm_sriov_configure : NULL,
 	.err_handler		= &hisi_zip_err_handler,
+	.shutdown		= hisi_qm_dev_shutdown,
 };
 
 static void hisi_zip_register_debugfs(void)
-- 
2.7.4