linux-kernel - Re: [PATCH v4 5/5] PCI: cadence: Add callback functions for RP and EP controller

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Message-ID: <25f5e8e4-1b64-478f-84ab-eede2c669655@kernel.org>
Date: Fri, 25 Apr 2025 18:27:02 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: hans.zhang@...tech.com, bhelgaas@...gle.com, lpieralisi@...nel.org,
 kw@...ux.com, manivannan.sadhasivam@...aro.org, robh@...nel.org,
 krzk+dt@...nel.org, conor+dt@...nel.org
Cc: peter.chen@...tech.com, linux-pci@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Manikandan K Pillai <mpillai@...ence.com>
Subject: Re: [PATCH v4 5/5] PCI: cadence: Add callback functions for RP and EP
 controller

On 24/04/2025 03:04, hans.zhang@...tech.com wrote:
> From: Manikandan K Pillai <mpillai@...ence.com>
> 
> Add support for the Cadence PCIe HPA controller by adding
> the required callback functions. Update the common functions for
> RP and EP configuration. Invoke the relevant callback functions
> for platform probe of PCIe controller using the callback function.
> Update the support for TI J721 boards to use the updated Cadence
> PCIe controller code.
> 
> Signed-off-by: Manikandan K Pillai <mpillai@...ence.com>
> Co-developed-by: Hans Zhang <hans.zhang@...tech.com>
> Signed-off-by: Hans Zhang <hans.zhang@...tech.com>
> ---
>  drivers/pci/controller/cadence/pci-j721e.c    |  12 +
>  .../pci/controller/cadence/pcie-cadence-ep.c  |  29 +-
>  .../controller/cadence/pcie-cadence-host.c    | 263 ++++++++++++++++--
>  .../controller/cadence/pcie-cadence-plat.c    |  27 +-
>  drivers/pci/controller/cadence/pcie-cadence.c | 197 ++++++++++++-
>  drivers/pci/controller/cadence/pcie-cadence.h |  11 +-
>  6 files changed, 495 insertions(+), 44 deletions(-)
> 
> diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
> index ef1cfdae33bb..154b36c30101 100644
> --- a/drivers/pci/controller/cadence/pci-j721e.c
> +++ b/drivers/pci/controller/cadence/pci-j721e.c
> @@ -164,6 +164,14 @@ static const struct cdns_pcie_ops j721e_pcie_ops = {
>  	.start_link = j721e_pcie_start_link,
>  	.stop_link = j721e_pcie_stop_link,
>  	.link_up = j721e_pcie_link_up,
> +	.host_init_root_port = cdns_pcie_host_init_root_port,
> +	.host_bar_ib_config = cdns_pcie_host_bar_ib_config,
> +	.host_init_address_translation = cdns_pcie_host_init_address_translation,
> +	.detect_quiet_min_delay_set = cdns_pcie_detect_quiet_min_delay_set,
> +	.set_outbound_region = cdns_pcie_set_outbound_region,
> +	.set_outbound_region_for_normal_msg =
> +					    cdns_pcie_set_outbound_region_for_normal_msg,
> +	.reset_outbound_region = cdns_pcie_reset_outbound_region,

How did you resolve Rob's comments?

These were repeated I think three times finally with:

"Please listen when I say we do not want the ops method used in other
drivers. "

I think you just send the same ignoring previous discussion which is the
shortest way to get yourself NAKed.


Best regards,
Krzysztof