linux-kernel - Re: [EXT] [PATCH v4 4/7] PCI: endpoint: Add BME notifier support

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Message-ID: <20230527022132.GA2814@thinkpad>
Date:   Sat, 27 May 2023 07:51:32 +0530
From:   Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To:     Frank Li <frank.li@....com>
Cc:     "lpieralisi@...nel.org" <lpieralisi@...nel.org>,
        "kw@...ux.com" <kw@...ux.com>,
        "kishon@...nel.org" <kishon@...nel.org>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>
Subject: Re: [EXT] [PATCH v4 4/7] PCI: endpoint: Add BME notifier support

On Fri, May 19, 2023 at 06:19:44PM +0000, Frank Li wrote:
> 
> > @@ -72,11 +72,13 @@ struct pci_epf_ops {
> >   * @core_init: Callback for the EPC initialization complete event
> >   * @link_up: Callback for the EPC link up event
> >   * @link_down: Callback for the EPC link down event
> > + * @bme: Callback for the EPC BME (Bus Master Enable) event
> >   */
> >  struct pci_epc_event_ops {
> >         int (*core_init)(struct pci_epf *epf);
> >         int (*link_up)(struct pci_epf *epf);
> >         int (*link_down)(struct pci_epf *epf);
> > +       int (*bme)(struct pci_epf *epf);
> 
> I posted a doorbell from host to EP at
> https://lore.kernel.org/imx/20230426203436.1277307-2-Frank.Li@nxp.com/T/#u
> 
> Can we consider consolidate these notification to one function and distinguished by
> EVENT_ID in future?
> 

My preference is to keep a separate callback for each event as it makes the code
look better instead of clubbing everything in a single callback separated by a
switch case.

- Mani

> Best regards
> Frank Li
> 
> >  };
> > 
> >  /**
> > --
> > 2.25.1
> 

-- 
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