[SeaBIOS] seabios: acpi: add _RMV control method for PCI devices
avi at redhat.com
Mon Dec 13 10:10:38 CET 2010
On 12/13/2010 11:03 AM, Gleb Natapov wrote:
> > We could also deprecate the old port and use fwcfg for everything
> > (try fwcfg, fall back to ae00).
> fwcfg designed to be simple for easy use by firmware. It has two port
> one for index another for value, so its use is racy in multi-threaded SMP
> environment. DSDT code is executed in such environment. There is lock
> facility in AML, but why complicate things.
I prefer to remove complexity from interfaces and have it in the
> > >> We could do this in two ways: by adding a fwcfg client to the DSDT,
> > >> or by copying the information to system memory, and referencing
> > >> system memory from the DSDT.
> > >>
> > >This is even worse. It requires some fixed address to be shared between
> > >DSDT and Seabios (or alternatively Seabios will have to generate this
> > >part of DSDT dynamically).
> > >
> > Could easily be something in the F segment.
> Yes, but then we will have two magic values (fwcfg index + address
> in F segment) instead of one (address of pci hot-plug controller).
The F segment address is internal to SeaBIOS; it isn't an external
error compiling committee.c: too many arguments to function
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