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| author | andrew <andrew@FreeBSD.org> | 2015-02-19 12:47:48 +0000 |
|---|---|---|
| committer | andrew <andrew@FreeBSD.org> | 2015-02-19 12:47:48 +0000 |
| commit | abd24e635c165fead8b3094c3636e28a715dce33 (patch) | |
| tree | bf1fdd99c1f66e3a87ae4c215a9df09b4aacff99 /sys/dev/ofw/ofw_cpu.c | |
| parent | c560f15fa85ae389cef41cccd341e86818691111 (diff) | |
| download | FreeBSD-src-abd24e635c165fead8b3094c3636e28a715dce33.zip FreeBSD-src-abd24e635c165fead8b3094c3636e28a715dce33.tar.gz | |
Add support to get the cpu ID from its device driver in a generic way.
This will be needed by arm64 to find the value to pass to the psci (Power
State Coordination Interface) driver, among other things, used to enable
cores.
Differential Revision: https://reviews.freebsd.org/D1824
Reviewed by: imp
Sponsored by: The FreeBSD Foundation
Diffstat (limited to 'sys/dev/ofw/ofw_cpu.c')
| -rw-r--r-- | sys/dev/ofw/ofw_cpu.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/dev/ofw/ofw_cpu.c b/sys/dev/ofw/ofw_cpu.c index 0432560..250419f 100644 --- a/sys/dev/ofw/ofw_cpu.c +++ b/sys/dev/ofw/ofw_cpu.c @@ -244,6 +244,7 @@ ofw_cpu_attach(device_t dev) static int ofw_cpu_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) { + struct ofw_cpulist_softc *psc; struct ofw_cpu_softc *sc; sc = device_get_softc(dev); @@ -258,6 +259,16 @@ ofw_cpu_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) return (0); } break; + case CPU_IVAR_CPUID_SIZE: + psc = device_get_softc(device_get_parent(dev)); + *result = psc->sc_addr_cells; + return (0); + case CPU_IVAR_CPUID: + if (sc->sc_reg_valid) { + *result = (uintptr_t)sc->sc_reg; + return (0); + } + break; } return (ENOENT); |
