linux-kernel - Re: [PATCH] PCI: switchtec: Include PCI100X devices support

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Message-ID: <f0b8792e-06c0-43f1-863d-021d9feac2ca@deltatee.com>
Date: Mon, 20 Jan 2025 10:31:15 -0700
From: Logan Gunthorpe <logang@...tatee.com>
To: Rakesh Babu Saladi <Saladi.Rakeshbabu@...rochip.com>,
 linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
 bhelgaas@...gle.com, kurt.schwemmer@...rosemi.com
Cc: unglinuxdriver@...rochip.com
Subject: Re: [PATCH] PCI: switchtec: Include PCI100X devices support



On 2025-01-20 02:55, Rakesh Babu Saladi wrote:
> Add the Microchip Parts to the existing device ID
> table so that the driver supports PCI100x devices too.
> 
> Add a new macro to quirk the Microchip switchtec PCI100x parts
> to allow DMA access via NTB to work when the IOMMU is turned on.
> 
> PCI100x family has 6 variants, each variant is designed for different
> application usages, different port counts and lane counts.
> 
> PCI1001 has 1 x4 upstream port and 3 x4 downstream ports.
> PCI1002 has 1 x4 upstream port and 4 x2 downstream ports.
> PCI1003 has 2 x4 upstream ports, 2 x2 upstream ports and 2 x2
> downstream ports.
> PCI1004 has 4 x4 upstream ports.
> PCI1005 has 1 x4 upstream port and 6 x2 downstream ports.
> PCI1006 has 6 x2 upstream ports and 2 x2 downstream ports.
> 
> Signed-off-by: Rakesh Babu Saladi <Saladi.Rakeshbabu@...rochip.com>
Looks good to me, thanks!

Acked-By: Logan Gunthorpe <logang@...tatee.com>

Logan