diff options
Diffstat (limited to 'src/core/acpi.c')
| -rw-r--r-- | src/core/acpi.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/core/acpi.c b/src/core/acpi.c index d573d2e98..223765f76 100644 --- a/src/core/acpi.c +++ b/src/core/acpi.c @@ -18,7 +18,9 @@ FILE_LICENCE ( GPL2_OR_LATER ); +#include <errno.h> #include <ipxe/acpi.h> +#include <ipxe/interface.h> /** @file * @@ -26,6 +28,13 @@ FILE_LICENCE ( GPL2_OR_LATER ); * */ +/****************************************************************************** + * + * Utility functions + * + ****************************************************************************** + */ + /** * Fix up ACPI table checksum * @@ -40,3 +49,37 @@ void acpi_fix_checksum ( struct acpi_description_header *acpi ) { } acpi->checksum -= sum; } + +/****************************************************************************** + * + * Interface methods + * + ****************************************************************************** + */ + +/** + * Describe object in an ACPI table + * + * @v intf Interface + * @v acpi ACPI table + * @v len Length of ACPI table + * @ret rc Return status code + */ +int acpi_describe ( struct interface *intf, + struct acpi_description_header *acpi, size_t len ) { + struct interface *dest; + acpi_describe_TYPE ( void * ) *op = + intf_get_dest_op ( intf, acpi_describe, &dest ); + void *object = intf_object ( dest ); + int rc; + + if ( op ) { + rc = op ( object, acpi, len ); + } else { + /* Default is to fail to describe */ + rc = -EOPNOTSUPP; + } + + intf_put ( dest ); + return rc; +} |