Date: Wed, 13 Jun 2018 12:33:47 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r335056 - head/sys/dev/psci Message-ID: <201806131233.w5DCXldN008477@repo.freebsd.org>
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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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