linux-kernel - Re: [PATCH v8 6/9] hisi_acc_vfio_pci: Add helper to retrieve the struct pci

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Message-ID: <a7d41c01-9032-14a1-b16f-a4a6a954addf@hisilicon.com>
Date:   Fri, 4 Mar 2022 17:40:31 +0800
From:   Zhou Wang <wangzhou1@...ilicon.com>
To:     Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>,
        <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>, <linuxarm@...wei.com>,
        <liulongfang@...wei.com>, <prime.zeng@...ilicon.com>,
        <jonathan.cameron@...wei.com>
Subject: Re: [PATCH v8 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.
> 
> Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>

Acked-by: Zhou Wang <wangzhou1@...ilicon.com>

Best,
Zhou

> ---
>  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
>