From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: Om Prakash Singh <omp@nvidia.com>
Cc: kishon@ti.com, lorenzo.pieralisi@arm.com, bhelgaas@google.com,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org,
smohanad@codeaurora.org
Subject: Re: [PATCH 0/5] PCI: endpoint: Add support for additional notifiers
Date: Thu, 17 Jun 2021 22:35:50 +0530 [thread overview]
Message-ID: <20210617170549.GA3075@workstation> (raw)
In-Reply-To: <9fd37c43-e2ab-f5b2-13dc-a23bd83d3c7b@nvidia.com>
Hi,
On Thu, Jun 17, 2021 at 12:42:07AM +0530, Om Prakash Singh wrote:
> 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.
That's what I initially thought eventhough not all the notifiers are
vendor specific. But Kishon suggested to add notifiers for generic ones
such as BME, PME etc... and that sounded reasonable to me.
> This
> also requires to have pre-defined values of "data" argument to standardize
> the interface.
>
No, I don't think we can standardize the arguments to "custom" notifier.
The custom notifier is supposed to deal with vendor specific events and
I don't see any benefit on standardizing it. I see it more like an
opaque driver_data field where we pass driver specific arguments.
Thanks,
Mani
> 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
> >
next prev parent reply other threads:[~2021-06-17 17:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-16 11:59 [PATCH 0/5] PCI: endpoint: Add support for additional notifiers Manivannan Sadhasivam
2021-06-16 11:59 ` [PATCH 1/5] PCI: endpoint: Add linkdown notifier support Manivannan Sadhasivam
2021-06-16 18:22 ` Om Prakash Singh
2021-06-16 18:30 ` Manivannan Sadhasivam
2021-06-16 11:59 ` [PATCH 2/5] PCI: endpoint: Add BME " Manivannan Sadhasivam
2021-06-16 11:59 ` [PATCH 3/5] PCI: endpoint: Add PME " Manivannan Sadhasivam
2021-06-16 11:59 ` [PATCH 4/5] PCI: endpoint: Add D_STATE " Manivannan Sadhasivam
2021-06-16 11:59 ` [PATCH 5/5] PCI: endpoint: Add custom " Manivannan Sadhasivam
2021-06-16 19:12 ` [PATCH 0/5] PCI: endpoint: Add support for additional notifiers Om Prakash Singh
2021-06-17 17:05 ` Manivannan Sadhasivam [this message]
2021-08-19 13:06 ` Manivannan Sadhasivam
2021-08-19 14:15 ` Kishon Vijay Abraham I
2021-08-19 14:22 ` Manivannan Sadhasivam
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