[PATCH v7 2/3] PCI: microchip: Fix inbound address translation tables

[Ilpo Järvinen]

On Thu, 11 Jul 2024, daire.mcnamara at microchip.com wrote:

> From: Daire McNamara <daire.mcnamara at microchip.com>
> 
> On Microchip PolarFire SoC the PCIe Root Port can be behind one of three
> general purpose Fabric Interface Controller (FIC) buses that encapsulates
> an AXI-S bus. Depending on which FIC(s) the Root Port is connected
> through to CPU space, and what address translation is done by that FIC,
> the Root Port driver's inbound address translation may vary.
> 
> For all current supported designs and all future expected designs,
> inbound address translation done by a FIC on PolarFire SoC varies
> depending on whether PolarFire SoC in operating in coherent DMA mode or
> noncoherent DMA mode.
> 
> The setup of the outbound address translation tables in the Root Port
> driver only needs to handle these two cases.
> 
> Setup the inbound address translation tables to one of two address
> translations, depending on whether the rootport is being used with coherent
> DMA or noncoherent DMA.
> 
> Fixes: 6f15a9c9f941 ("PCI: microchip: Add Microchip Polarfire PCIe controller driver")
> Signed-off-by: Daire McNamara <daire.mcnamara at microchip.com>
> Acked-by: Conor Dooley <conor.dooley at microchip.com>

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen at linux.intel.com>

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 i.