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Re: [Qemu-ppc] [RFC PATCH 09/12] ppc440: Add emulation of plb-pcix contr

From: BALATON Zoltan
Subject: Re: [Qemu-ppc] [RFC PATCH 09/12] ppc440: Add emulation of plb-pcix controller found in some 440 SoCs
Date: Fri, 18 Aug 2017 14:15:49 +0200 (CEST)
User-agent: Alpine 2.21 (BSF 202 2017-01-01)

On Fri, 18 Aug 2017, François Revol wrote:
Le 18/08/2017 à 03:53, David Gibson a écrit :
On Sun, Aug 13, 2017 at 07:04:38PM +0200, BALATON Zoltan wrote:

You know I'm going to say it, right: needs a commit message.

What's a "plb-pcix", and what's an example of a 440 SoCs which has it.

IIRC that's the PCI(express) controller, which is not memory-mapped but
inside the DCR address space, so accessed from the PLB.

This is the PCI(X) controller only, the PCIe(xpress) controller is (partially) implemented in sam460ex.c TYPE_PPC460EX_PCIE_HOST/"ppc460ex-pcie-host". The plb-pcix is the compatible name the fdt refers to. I only know of the 460EX that has it but probably other similar SoCs (like some 440 variants) also have this kind of PCI controller (according to #defines in U-Boot source but don't remember the details).


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