Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH 1/4] ata: ahci_platform: Add ACPI support for AMD Seattle SATA controller | Date | Mon, 06 Oct 2014 20:44:35 +0200 |
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On Monday 06 October 2014 19:21:53 Matthew Garrett wrote: > On Mon, Oct 06, 2014 at 08:19:37PM +0200, Arnd Bergmann wrote: > > > Interesting. Does this also define a way to get access to registers > > that are normally in PCI config space, provided they are accessible at > > all? > > Unfortunately not. I'd assume that PM registers are expected to be > accessed via the _PS* methods instead. Does MSI make sense outside the > context of PCI interrupts?
Yes, the ARM GIC has a weird sense of what MSI is used for, and apparently some SoC vendors have started using MSI by default for all on-chip peripherals.
A patch series to extend MSI to platform devices is currently under review.
Arnd
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