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psci: Add accessor for psci_0_1_function_ids 

Make it possible to retrieve a copy of the psci_0_1_function_ids struct.
This is useful for KVM if it is configured to intercept host's PSCI SMCs.

Signed-off-by: David Brazdil <dbrazdil@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20201202184122.26046-7-dbrazdil@google.com
zero-sugar-mainline-defconfig
David Brazdil 2020-12-02 18:41:02 +00:00 committed by Marc Zyngier
parent 82ac62d165
commit 6df3e14436
2 changed files with 14 additions and 7 deletions
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12
drivers/firmware/psci/psci.c
View File

@ -58,15 +58,13 @@ typedef unsigned long (psci_fn)(unsigned long, unsigned long,
unsigned long, unsigned long);
static psci_fn *invoke_psci_fn;
struct psci_0_1_function_ids {
u32 cpu_suspend;
u32 cpu_on;
u32 cpu_off;
u32 migrate;
};
static struct psci_0_1_function_ids psci_0_1_function_ids;
struct psci_0_1_function_ids get_psci_0_1_function_ids(void)
{
return psci_0_1_function_ids;
}
#define PSCI_0_2_POWER_STATE_MASK \
(PSCI_0_2_POWER_STATE_ID_MASK | \
PSCI_0_2_POWER_STATE_TYPE_MASK | \

9
include/linux/psci.h
View File

@ -34,6 +34,15 @@ struct psci_operations {
extern struct psci_operations psci_ops;
struct psci_0_1_function_ids {
u32 cpu_suspend;
u32 cpu_on;
u32 cpu_off;
u32 migrate;
};
struct psci_0_1_function_ids get_psci_0_1_function_ids(void);
#if defined(CONFIG_ARM_PSCI_FW)
int __init psci_dt_init(void);
#else