Re: ACPI request/release generic address

[Corey Minyard <minyard@acm.org>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

It an acpi_generic_address structure defined in include/acpi/actbl2.h.
It's an address that can be in memory, I/O, or PCI configuration space.

The definition is at http://www.microsoft.com/hwdev/tech/onnow/LF-ACPI.asp

- -Corey

Jeff Garzik wrote:

|On Fri, Feb 28, 2003 at 10:26:13AM -0600, Corey Minyard wrote:
|
|>-----BEGIN PGP SIGNED MESSAGE-----
|>Hash: SHA1
|>
|>Is there a way in the ACPI code to do a request/release of I/O or memory
|>with an acpi_generic_address?  Does it even make sense to do this?
|>There are generic I/O routines for using a generic address, and I'm
|>working with an ACPI table that has a generic address, so it would seem
|>to make sense to have memory reservation routines through this, too.
|
|
|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.
|
|    Jeff
|
|
|

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQE+X6jqIXnXXONXERcRAtghAKCpyo6enCR91Affkq9lwDRIRQleTwCeIC1t
TlYA0vFQIvYWCKf7IknAG90=
=BG4s
-----END PGP SIGNATURE-----