We will use the EFI event handling infrastructure in a future patch to
register a notification function that executes at the very end of
ExitBootServices() to disable DMA on all PCI bridges in the system.
So import the missing macros and typedefs from the UEFI spec.
Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
---
include/linux/efi.h | 23 ++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/include/linux/efi.h b/include/linux/efi.h
index f97f48a3dc81..81bd1e8c201f 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -270,6 +270,23 @@ typedef struct {
u32 create_event_ex;
} __packed efi_boot_services_32_t;
+typedef unsigned long efi_tpl_t;
+
+#define TPL_APPLICATION 4
+#define TPL_CALLBACK 8
+#define TPL_NOTIFY 16
+#define TPL_HIGH_LEVEL 31
+
+typedef void *efi_event_t;
+typedef void (__efiapi *efi_event_notify_t)(efi_event_t, void *);
+
+#define EVT_TIMER 0x80000000
+#define EVT_RUNTIME 0x40000000
+#define EVT_NOTIFY_WAIT 0x00000100
+#define EVT_NOTIFY_SIGNAL 0x00000200
+#define EVT_SIGNAL_EXIT_BOOT_SERVICES 0x00000201
+#define EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE 0x60000202
+
/*
* EFI Boot Services table
*/
@@ -288,10 +305,12 @@ typedef union {
efi_status_t (__efiapi *allocate_pool)(int, unsigned long,
void **);
efi_status_t (__efiapi *free_pool)(void *);
- void *create_event;
+ efi_status_t (__efiapi *create_event)(u32 type, efi_tpl_t,
+ efi_event_notify_t,
+ void *, efi_event_t *);
void *set_timer;
void *wait_for_event;
- void *signal_event;
+ efi_status_t (__efiapi *signal_event)(efi_event_t);
void *close_event;
void *check_event;
void *install_protocol_interface;
--
2.17.1
