linux-kernel - [PATCH v9 6/9] hisi_acc_vfio_pci: Add helper to retrieve the struct pci

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Message-ID: <20220308184902.2242-7-shameerali.kolothum.thodi@huawei.com>
Date:   Tue, 8 Mar 2022 18:48:59 +0000
From:   Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>
To:     <kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-crypto@...r.kernel.org>
CC:     <linux-pci@...r.kernel.org>, <alex.williamson@...hat.com>,
        <jgg@...dia.com>, <cohuck@...hat.com>, <mgurtovoy@...dia.com>,
        <yishaih@...dia.com>, <kevin.tian@...el.com>,
        <linuxarm@...wei.com>, <liulongfang@...wei.com>,
        <prime.zeng@...ilicon.com>, <jonathan.cameron@...wei.com>,
        <wangzhou1@...ilicon.com>
Subject: [PATCH v9 6/9] hisi_acc_vfio_pci: Add helper to retrieve the struct pci_driver

struct pci_driver pointer is an input into the pci_iov_get_pf_drvdata().
Introduce helpers to retrieve the ACC PF dev struct pci_driver pointers
as we use this in ACC vfio migration driver.

Acked-by: Zhou Wang <wangzhou1@...ilicon.com>
Acked-by: Kai Ye <yekai13@...wei.com>
Acked-by: Longfang Liu <liulongfang@...wei.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>
---
 drivers/crypto/hisilicon/hpre/hpre_main.c | 6 ++++++
 drivers/crypto/hisilicon/sec2/sec_main.c  | 6 ++++++
 drivers/crypto/hisilicon/zip/zip_main.c   | 6 ++++++
 include/linux/hisi_acc_qm.h               | 5 +++++
 4 files changed, 23 insertions(+)

diff --git a/drivers/crypto/hisilicon/hpre/hpre_main.c b/drivers/crypto/hisilicon/hpre/hpre_main.c
index 3589d8879b5e..36ab30e9e654 100644
--- a/drivers/crypto/hisilicon/hpre/hpre_main.c
+++ b/drivers/crypto/hisilicon/hpre/hpre_main.c
@@ -1190,6 +1190,12 @@ static struct pci_driver hpre_pci_driver = {
 	.driver.pm		= &hpre_pm_ops,
 };
 
+struct pci_driver *hisi_hpre_get_pf_driver(void)
+{
+	return &hpre_pci_driver;
+}
+EXPORT_SYMBOL_GPL(hisi_hpre_get_pf_driver);
+
 static void hpre_register_debugfs(void)
 {
 	if (!debugfs_initialized())
diff --git a/drivers/crypto/hisilicon/sec2/sec_main.c b/drivers/crypto/hisilicon/sec2/sec_main.c
index 311a8747b5bf..421a405ca337 100644
--- a/drivers/crypto/hisilicon/sec2/sec_main.c
+++ b/drivers/crypto/hisilicon/sec2/sec_main.c
@@ -1088,6 +1088,12 @@ static struct pci_driver sec_pci_driver = {
 	.driver.pm = &sec_pm_ops,
 };
 
+struct pci_driver *hisi_sec_get_pf_driver(void)
+{
+	return &sec_pci_driver;
+}
+EXPORT_SYMBOL_GPL(hisi_sec_get_pf_driver);
+
 static void sec_register_debugfs(void)
 {
 	if (!debugfs_initialized())
diff --git a/drivers/crypto/hisilicon/zip/zip_main.c b/drivers/crypto/hisilicon/zip/zip_main.c
index 66decfe07282..4534e1e107d1 100644
--- a/drivers/crypto/hisilicon/zip/zip_main.c
+++ b/drivers/crypto/hisilicon/zip/zip_main.c
@@ -1012,6 +1012,12 @@ static struct pci_driver hisi_zip_pci_driver = {
 	.driver.pm		= &hisi_zip_pm_ops,
 };
 
+struct pci_driver *hisi_zip_get_pf_driver(void)
+{
+	return &hisi_zip_pci_driver;
+}
+EXPORT_SYMBOL_GPL(hisi_zip_get_pf_driver);
+
 static void hisi_zip_register_debugfs(void)
 {
 	if (!debugfs_initialized())
diff --git a/include/linux/hisi_acc_qm.h b/include/linux/hisi_acc_qm.h
index 6a6477c34666..00f2a4db8723 100644
--- a/include/linux/hisi_acc_qm.h
+++ b/include/linux/hisi_acc_qm.h
@@ -476,4 +476,9 @@ void hisi_qm_pm_init(struct hisi_qm *qm);
 int hisi_qm_get_dfx_access(struct hisi_qm *qm);
 void hisi_qm_put_dfx_access(struct hisi_qm *qm);
 void hisi_qm_regs_dump(struct seq_file *s, struct debugfs_regset32 *regset);
+
+/* Used by VFIO ACC live migration driver */
+struct pci_driver *hisi_sec_get_pf_driver(void);
+struct pci_driver *hisi_hpre_get_pf_driver(void);
+struct pci_driver *hisi_zip_get_pf_driver(void);
 #endif
-- 
2.25.1