Author: andrew
Date: Wed Jun 13 12:33:47 2018
New Revision: 335056
URL: https://svnweb.freebsd.org/changeset/base/335056
Log:
Add a handler for the PSCI_FEATURES function. This needs PSCI 1.0, so
check for this, returning an error if the version is too old.
Sponsored by: DARPA, AFRL
Modified:
head/sys/dev/psci/psci.c
head/sys/dev/psci/psci.h
Modified: head/sys/dev/psci/psci.c
==============================================================================
--- head/sys/dev/psci/psci.c Wed Jun 13 12:32:04 2018 (r335055)
+++ head/sys/dev/psci/psci.c Wed Jun 13 12:33:47 2018 (r335056)
@@ -414,6 +414,20 @@ psci_find_callfn(psci_callfn_t *callfn)
return (PSCI_RETVAL_SUCCESS);
}
+int32_t
+psci_features(uint32_t psci_func_id)
+{
+
+ if (psci_softc == NULL)
+ return (PSCI_RETVAL_NOT_SUPPORTED);
+
+ /* The feature flags were added to PSCI 1.0 */
+ if (PSCI_VER_MAJOR(psci_softc->psci_version) < 1)
+ return (PSCI_RETVAL_NOT_SUPPORTED);
+
+ return (psci_call(PSCI_FNID_FEATURES, psci_func_id, 0, 0));
+}
+
int
psci_cpu_on(unsigned long cpu, unsigned long entry, unsigned long context_id)
{
Modified: head/sys/dev/psci/psci.h
==============================================================================
--- head/sys/dev/psci/psci.h Wed Jun 13 12:32:04 2018 (r335055)
+++ head/sys/dev/psci/psci.h Wed Jun 13 12:33:47 2018 (r335056)
@@ -36,12 +36,15 @@ typedef int (*psci_callfn_t)(register_t, register_t, r
extern int psci_present;
-void psci_reset(void);
int psci_cpu_on(unsigned long, unsigned long, unsigned long);
+void psci_reset(void);
+int32_t psci_features(uint32_t);
+int psci_get_version(void);
+
+/* One of these handlers will be selected during the boot */
int psci_hvc_despatch(register_t, register_t, register_t, register_t);
int psci_smc_despatch(register_t, register_t, register_t, register_t);
-int psci_get_version(void);
/*
* PSCI return codes.
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