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Altix: Initial ACPI support - ROM shadowing.

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Support a shadowed ROM when running with an ACPI capable PROM.

Define a new dev.resource flag IORESOURCE_ROM_BIOS_COPY to
describe the case of a BIOS shadowed ROM, which can then
be used to avoid pci_map_rom() making an unneeded call to
pci_enable_rom().


Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
John Keller
2006-10-04 16:49:52 -05:00
committed by Greg Kroah-Hartman
parent 9f581f162e
commit a2302c68d9
5 changed files with 46 additions and 5 deletions
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include/linux/ioport.h
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@@ -89,6 +89,7 @@ struct resource_list {
#define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */
#define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */
#define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */
#define IORESOURCE_ROM_BIOS_COPY (1<<3) /* ROM is BIOS copy, resource field overlaid */
/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
extern struct resource ioport_resource;