diff options
| author | Bob Moore <robert.moore@intel.com> | 2009-02-03 14:43:04 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-03-26 16:38:20 -0400 |
| commit | d3ccaff827cef5a5c5a0f3c97e1e2e6d99f618cb (patch) | |
| tree | c6c3d75d44f38d967a0f7333ed9eef4ab3d8999b /drivers/acpi/acpica | |
| parent | 97cbb7d196845ec9a6c0e3cc33ec20503f8c4e73 (diff) | |
| download | linux-d3ccaff827cef5a5c5a0f3c97e1e2e6d99f618cb.tar.bz2 | |
ACPICA: Add override for dynamic tables
Add a call to acpi_os_table_override during the installation of a
dynamic table (loaded via the Load or LoadTable AML operators).
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica')
| -rw-r--r-- | drivers/acpi/acpica/tbinstal.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c index 37374b21969d..ef269a297b57 100644 --- a/drivers/acpi/acpica/tbinstal.c +++ b/drivers/acpi/acpica/tbinstal.c @@ -103,7 +103,9 @@ acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc) * * RETURN: Status * - * DESCRIPTION: This function is called to add the ACPI table + * DESCRIPTION: This function is called to add an ACPI table. It is used to + * dynamically load tables via the Load and load_table AML + * operators. * ******************************************************************************/ @@ -112,6 +114,7 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index) { u32 i; acpi_status status = AE_OK; + struct acpi_table_header *override_table = NULL; ACPI_FUNCTION_TRACE(tb_add_table); @@ -201,6 +204,29 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index) } } + /* + * ACPI Table Override: + * Allow the host to override dynamically loaded tables. + */ + status = acpi_os_table_override(table_desc->pointer, &override_table); + if (ACPI_SUCCESS(status) && override_table) { + ACPI_INFO((AE_INFO, + "%4.4s @ 0x%p Table override, replaced with:", + table_desc->pointer->signature, + ACPI_CAST_PTR(void, table_desc->address))); + + /* We can delete the table that was passed as a parameter */ + + acpi_tb_delete_table(table_desc); + + /* Setup descriptor for the new table */ + + table_desc->address = ACPI_PTR_TO_PHYSADDR(override_table); + table_desc->pointer = override_table; + table_desc->length = override_table->length; + table_desc->flags = ACPI_TABLE_ORIGIN_OVERRIDE; + } + /* Add the table to the global root table list */ status = acpi_tb_store_table(table_desc->address, table_desc->pointer, |