linux-kernel - Re: [PATCH 0/2] PCI: dwc: ep: Enhance multi-function endpoint support

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Message-ID: <aXCTbb-0BWAWc2DB@ryzen>
Date: Wed, 21 Jan 2026 09:50:53 +0100
From: Niklas Cassel <cassel@...nel.org>
To: Aksh Garg <a-garg7@...com>
Cc: linux-pci@...r.kernel.org, jingoohan1@...il.com, mani@...nel.org,
	lpieralisi@...nel.org, kwilczynski@...nel.org, robh@...nel.org,
	bhelgaas@...gle.com, linux-kernel@...r.kernel.org,
	s-vadapalli@...com, danishanwar@...com
Subject: Re: [PATCH 0/2] PCI: dwc: ep: Enhance multi-function endpoint support

On Wed, Jan 21, 2026 at 11:12:12AM +0530, Aksh Garg wrote:
> This series addresses multi-function endpoint configuration issues in
> the DWC PCIe controller driver. The changes enable proper operations
> for physical functions and enhance the multi-function endpoint support.

Considering that the DWC driver design has always been broken with regards
to multiple physical functions, as you explain yourself, the iATU to BAR
mapping has always been per controller, not per PF.

Thus, it would be nice if you explained how you have actually tested this.

Does the controller you are using have both Resizable and Programmable BARs?

Kind regards,
Niklas