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

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Message-ID: <5a7e722a526f46f1818a3113c81fc352@huawei.com>
Date:   Fri, 4 Mar 2022 11:31:51 +0000
From:   Shameerali Kolothum Thodi <shameerali.kolothum.thodi@...wei.com>
To:     "Wangzhou (B)" <wangzhou1@...ilicon.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        Xu Zaibo <xuzaibo@...wei.com>
CC:     "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "jgg@...dia.com" <jgg@...dia.com>,
        "cohuck@...hat.com" <cohuck@...hat.com>,
        "mgurtovoy@...dia.com" <mgurtovoy@...dia.com>,
        "yishaih@...dia.com" <yishaih@...dia.com>,
        Linuxarm <linuxarm@...wei.com>,
        liulongfang <liulongfang@...wei.com>,
        "Zengtao (B)" <prime.zeng@...ilicon.com>,
        "Jonathan Cameron" <jonathan.cameron@...wei.com>
Subject: RE: [PATCH v8 6/9] hisi_acc_vfio_pci: Add helper to retrieve the
 struct pci_driver


> -----Original Message-----
> From: Wangzhou (B)
> Sent: 04 March 2022 09:41
> To: Shameerali Kolothum Thodi <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
> <linuxarm@...wei.com>; liulongfang <liulongfang@...wei.com>; Zengtao (B)
> <prime.zeng@...ilicon.com>; Jonathan Cameron
> <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>

Thanks.

[+cc Zaibo] for hpre/sec part

> 
> 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
> >