Author: andrew
Date: Tue Jan 9 15:57:09 2018
New Revision: 327728
URL: https://svnweb.freebsd.org/changeset/base/327728
Log:
Add a function to find the PSCI version the firmware implements from
outside the PSCI driver.
MFC after: 1 week
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 Tue Jan 9 14:33:05 2018 (r327727)
+++ head/sys/dev/psci/psci.c Tue Jan 9 15:57:09 2018 (r327728)
@@ -314,7 +314,7 @@ psci_attach(device_t dev, psci_initfn_t psci_init)
}
static int
-psci_get_version(struct psci_softc *sc)
+_psci_get_version(struct psci_softc *sc)
{
uint32_t fnid;
@@ -326,6 +326,15 @@ psci_get_version(struct psci_softc *sc)
return (PSCI_RETVAL_NOT_SUPPORTED);
}
+int
+psci_get_version(void)
+{
+
+ if (psci_softc == NULL)
+ return (PSCI_RETVAL_NOT_SUPPORTED);
+ return (_psci_get_version(psci_softc));
+}
+
#ifdef FDT
static int
psci_fdt_callfn(psci_callfn_t *callfn)
@@ -487,7 +496,7 @@ psci_v0_2_init(device_t dev)
sc->psci_fnids[PSCI_FN_SYSTEM_OFF] = PSCI_FNID_SYSTEM_OFF;
sc->psci_fnids[PSCI_FN_SYSTEM_RESET] = PSCI_FNID_SYSTEM_RESET;
- version = psci_get_version(sc);
+ version = _psci_get_version(sc);
if (version == PSCI_RETVAL_NOT_SUPPORTED)
return (1);
Modified: head/sys/dev/psci/psci.h
==============================================================================
--- head/sys/dev/psci/psci.h Tue Jan 9 14:33:05 2018 (r327727)
+++ head/sys/dev/psci/psci.h Tue Jan 9 15:57:09 2018 (r327728)
@@ -41,6 +41,7 @@ int psci_cpu_on(unsigned long, unsigned long, unsigned
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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