linux-kernel - Re: [PATCH 0/2] PCI: Convert the Apple controller to host bridge hooks

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Message-ID: <20241211060418.gpepptv6wlbv7fwt@thinkpad>
Date: Wed, 11 Dec 2024 11:34:18 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Marc Zyngier <maz@...nel.org>
Cc: linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Rob Herring <robh@...nel.org>,
	Alyssa Rosenzweig <alyssa@...enzweig.io>,
	Frank Li <Frank.Li@....com>
Subject: Re: [PATCH 0/2] PCI: Convert the Apple controller to host bridge
 hooks

On Wed, Dec 04, 2024 at 03:01:43PM +0000, Marc Zyngier wrote:
> The Apple PCIe controller requires some additional attention when
> enabling an endpoint device, so that the RID gets correctly mapped to
> a SID on its way to the IOMMU.
> 
> So far, we have need relying on a custom bus notifier to perform this
> task, but Frank Li's series [1] is a better approach as it puts the
> complexity in the core code instead of the host controller driver, and
> this series builds on that:
> 
> - allow the new {en,dis}able_device() to be provided via pci_ecam_ops
> 
> - convert the Apple PCIe driver to that infrastructure
> 
> Patches on top of 6.13-rc1, plus Frank's v7 series.
> 
> [1] https://lore.kernel.org/r/20241203-imx95_lut-v7-0-d0cd6293225e@nxp.com
> 

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

- Mani

> Marc Zyngier (2):
>   PCI: host-generic: Allow {en,dis}able_device() to be provided via
>     pci_ecam_ops
>   PCI: apple: Convert to {en,dis}able_device() callbacks
> 
>  drivers/pci/controller/pci-host-common.c |  2 +
>  drivers/pci/controller/pcie-apple.c      | 75 +++++-------------------
>  include/linux/pci-ecam.h                 |  4 ++
>  3 files changed, 21 insertions(+), 60 deletions(-)
> 
> -- 
> 2.39.2
> 

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