Messages in this thread | | | Date | Sun, 19 Feb 2023 10:27:17 +0100 | Subject | Re: [PATCH] mips: Realtek RTL: select NO_EXCEPT_FILL | From | Olliver Schinagl <> |
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On 19-02-2023 10:02, Thomas Bogendoerfer wrote: > On Fri, Feb 17, 2023 at 08:27:05PM +0100, Olliver Schinagl wrote: >> It is the Realtek series of SoC, specifically in my case, the RTL9302b, >> which doesn't have a PCI peripherial, at all :) Nor configured in the >> devicetree, but of course generic_mips_kernel enables the drivers, which >> should be noop. I don't see anything related to PCI during boot. >> >> Having said that, the RTL930x series take their heritage from the RTL819x >> (and probably older) wifi SoC series from realtek, which did contain a PCIe >> peripherial, as that is where the (external) wifi chip was connected too. > I see, and you want to use the already existing wifi driver ? Not at all, the rtl930x is a pure switch chip (10 serdes connecting to multiple PHY's yielding 24 - 48 (+ some SFP port) configurations, all without anything PCI related. > >>> Do you have a programmers manual for it, >>> which contains details about the PCI bridge ? >> If only. There are some (leaked) datasheets, that do contain the PCI >> registers, mostly (obviously) the rtl819x datasheets. https://github.com/libc0607/Realtek_switch_hacking/blob/files/REALTEK-RTL8196E.pdf >> is one such example that contains the PCIe registers. > that's just the PCIe PHY part, but not the localbus<->PCIe bridge > part. But if the wifi part of ypur SOC is directly connected to > the localbus, having the some PCI register won't help anyway. > I am afraid you need to go the route via extra Kconfig section.
It's still odd though; as we do not have _anything_ PCI, but it SWAP_IO_SPACE causes the crash.
So in that case, we'll wend up with a duplicate of generic_mips_kernel - SWAP_IO_SPACE, any suggestions of doing this cleanly in kconfig? copy pasting the whole shebang (and maintaining it) seems wasteful.
I suppose the chip is generic, except one thing makes it not generic :(
What makes SWAP_IO_SPACE generic then? :)
> > Thomas. >
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