Add einjv2 extension struct and EINJv2 error types to prepare
the driver for EINJv2 support. ACPI specifications[1] enables
EINJv2 by extending set_error_type_with_address struct.

Link: 
https://uefi.org/specs/ACPI/6.6/18_Platform_Error_Interfaces.html#einjv2-extension-structure
 [1]

Reviewed-by: Jonathan Cameron <[email protected]>
Signed-off-by: Zaid Alali <[email protected]>
Signed-off-by: Tony Luck <[email protected]>
---
 drivers/acpi/apei/einj-core.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/acpi/apei/einj-core.c b/drivers/acpi/apei/einj-core.c
index f018d3970de8..e74281f5044e 100644
--- a/drivers/acpi/apei/einj-core.c
+++ b/drivers/acpi/apei/einj-core.c
@@ -50,6 +50,28 @@
  */
 static int acpi5;
 
+struct syndrome_array {
+       union {
+               u8      acpi_id[16];
+               u8      device_id[16];
+               u8      pcie_sbdf[16];
+               u8      vendor_id[16];
+       } comp_id;
+       union {
+               u8      proc_synd[16];
+               u8      mem_synd[16];
+               u8      pcie_synd[16];
+               u8      vendor_synd[16];
+       } comp_synd;
+};
+
+struct einjv2_extension_struct {
+       u32 length;
+       u16 revision;
+       u16 component_arr_count;
+       struct syndrome_array component_arr[] __counted_by(component_arr_count);
+};
+
 struct set_error_type_with_address {
        u32     type;
        u32     vendor_extension;
@@ -58,6 +80,7 @@ struct set_error_type_with_address {
        u64     memory_address;
        u64     memory_address_range;
        u32     pcie_sbdf;
+       struct  einjv2_extension_struct einjv2_struct;
 };
 enum {
        SETWA_FLAGS_APICID = 1,
-- 
2.43.0


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