| commit | 8cb24c8fd70ea8431744de1ca0ca34ab45fbbdaa | |
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | |
| Thu, 21 May 2009 21:49:59 +0000 (21 15:49 -0600) | ||
| committer | Len Brown <len.brown@intel.com> | |
| Thu, 28 May 2009 01:25:00 +0000 (27 21:25 -0400) | ||
| tree | cf7d65c56112edda3fb92d0e61349339753c918e | treesnapshot (tar.gz zip) |
| parent | cd86a536c81e9300d984327517548ca0652eebf9 | commitdiff |
PNPACPI: parse Extended Address Space Descriptors
Extended Address Space Descriptors are new in ACPI 3.0 and allow the
BIOS to communicate device resource cacheability attributes (write-back,
write-through, uncacheable, etc) to the OS.
Previously, PNPACPI ignored these descriptors, so if a BIOS used them,
a device could be responding at addresses the OS doesn't know about.
This patch adds support for these descriptors in _CRS and _PRS. We
don't attempt to encode them for _SRS (just like we don't attempt to
encode the existing 16-, 32-, and 64-bit Address Space Descriptors).
Unfortunately, I don't have a way to test this.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Extended Address Space Descriptors are new in ACPI 3.0 and allow the
BIOS to communicate device resource cacheability attributes (write-back,
write-through, uncacheable, etc) to the OS.
Previously, PNPACPI ignored these descriptors, so if a BIOS used them,
a device could be responding at addresses the OS doesn't know about.
This patch adds support for these descriptors in _CRS and _PRS. We
don't attempt to encode them for _SRS (just like we don't attempt to
encode the existing 16-, 32-, and 64-bit Address Space Descriptors).
Unfortunately, I don't have a way to test this.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
| drivers/pnp/pnpacpi/rsparser.c | diffblobblamehistory |