Add support for deep(er) idle states that can be entered using PSCI. For

now this only supports states advertised in device trees, but ACPI support
could be added as well.  The parsing of the idle states as well as the
heuristic to pick the deepest one is probably a bit to simple, but more
complex cases can be added later.  Worst case cores will use WFI and use
more power in suspend.

ok phessler@

1 files changed, 3 insertions, 1 deletions

diff --git a/sys/arch/arm64/include/cpu.h b/sys/arch/arm64/include/cpu.h
index 3ab8a14e166..2ddaec58f66 100644
--- a/sys/arch/arm64/include/cpu.h
+++ b/sys/arch/arm64/include/cpu.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: cpu.h,v 1.34 2022/12/31 00:30:21 patrick Exp $ */
+/* $OpenBSD: cpu.h,v 1.35 2023/02/19 17:16:13 kettenis Exp $ */
 /*
  * Copyright (c) 2016 Dale Rahn <drahn@dalerahn.com>
  *
@@ -142,6 +142,8 @@ struct cpu_info {
 	uint64_t		ci_ttbr1;
 	vaddr_t			ci_el1_stkend;
 
+	uint32_t		ci_psci_suspend_param;
+
 	struct opp_table	*ci_opp_table;
 	volatile int		ci_opp_idx;
 	volatile int		ci_opp_max;