diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2019-11-08 13:35:14 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-10 11:21:19 +0100 |
| commit | 0a65b836f2bf5bcd46afd62a9b322065a68afdf7 (patch) | |
| tree | a60628fcf653223c2fed47097071f8f596bcddd2 /include/linux/psci.h | |
| parent | d10ce9593da9edf141b7bfcf9e8f62d39a523c84 (diff) | |
firmware/psci: Expose PSCI conduit
commit 09a8d6d48499f93e2abde691f5800081cd858726 upstream.
In order to call into the firmware to apply workarounds, it is
useful to find out whether we're using HVC or SMC. Let's expose
this through the psci_ops.
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com> [v4.9 backport]
Tested-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/psci.h')
| -rw-r--r-- | include/linux/psci.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/psci.h b/include/linux/psci.h index 12c4865457ad..864cdede8d15 100644 --- a/include/linux/psci.h +++ b/include/linux/psci.h @@ -24,6 +24,12 @@ bool psci_tos_resident_on(int cpu); bool psci_power_state_loses_context(u32 state); bool psci_power_state_is_valid(u32 state); +enum psci_conduit { + PSCI_CONDUIT_NONE, + PSCI_CONDUIT_SMC, + PSCI_CONDUIT_HVC, +}; + struct psci_operations { int (*cpu_suspend)(u32 state, unsigned long entry_point); int (*cpu_off)(u32 state); @@ -32,6 +38,7 @@ struct psci_operations { int (*affinity_info)(unsigned long target_affinity, unsigned long lowest_affinity_level); int (*migrate_info_type)(void); + enum psci_conduit conduit; }; extern struct psci_operations psci_ops; |