Messages in this thread | | | From | "Grover, Andrew" <> | Subject | RE: ACPI request/release generic address | Date | Fri, 28 Feb 2003 08:49:44 -0800 |
| |
> From: Jeff Garzik [mailto:jgarzik@pobox.com] > Can you define a generic address? > > IIRC, ACPI needs some work in this area. > > If the "generic address" is host RAM, that's easy. > If the generic address is PIO address, that's mostly easy. > If the generic address is MMIO address, that takes a bit of care with > mapping, and I'm not sure ACPI gets it right in these cases.
The Generic Address Structure (GAS) is basically a 64 bit address and a type field. The type can be:
System memory System IO PCI Config space Embedded Controller SMBus Functional fixed hardware
I don't think this will very easily handle a clean request/release API. Corey, what is the specific table you are concerned with? At least with the GASes ACPI uses internally, they point to resource regions already marked as used via other means (e820 or _CRS, for example.)
Regards -- Andy - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |