linux-kernel - Re: [PATCH 0/5] PCI: endpoint: Add support for additional notifiers

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Date:   Thu, 17 Jun 2021 00:42:07 +0530
From:   Om Prakash Singh <omp@...dia.com>
To:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        <kishon@...com>, <lorenzo.pieralisi@....com>, <bhelgaas@...gle.com>
CC:     <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <hemantk@...eaurora.org>,
        <smohanad@...eaurora.org>
Subject: Re: [PATCH 0/5] PCI: endpoint: Add support for additional notifiers

Hi Mani,
Adding more notifier types will surely help but I believe the list is 
not exhaustive. What you are trying here is to pass various 
vendor-specific epc interrupts to EPF driver. That can be taken care by 
a single notifier interface as well, "pci_epc_custom_notify" from your 
implementation. This also requires to have pre-defined values of "data" 
argument to standardize the interface.

your thoughts?

Thanks,
Om

On 6/16/2021 5:29 PM, Manivannan Sadhasivam wrote:
> External email: Use caution opening links or attachments
> 
> 
> Hello,
> 
> This series adds support for additional notifiers in the PCI endpoint
> framework. The notifiers LINK_DOWN, BME, PME, and D_STATE are generic
> for all PCI endpoints but there is also a custom notifier (CUSTOM) added
> to pass the device/vendor specific events to EPF from EPC.
> 
> The example usage of all notifiers is provided in the commit description.
> 
> Thanks,
> Mani
> 
> Manivannan Sadhasivam (5):
>    PCI: endpoint: Add linkdown notifier support
>    PCI: endpoint: Add BME notifier support
>    PCI: endpoint: Add PME notifier support
>    PCI: endpoint: Add D_STATE notifier support
>    PCI: endpoint: Add custom notifier support
> 
>   drivers/pci/endpoint/pci-epc-core.c | 89 +++++++++++++++++++++++++++++
>   include/linux/pci-epc.h             |  5 ++
>   include/linux/pci-epf.h             |  5 ++
>   3 files changed, 99 insertions(+)
> 
> --
> 2.25.1
>