diff options
Diffstat (limited to 'sys/dev/acpi')
| -rw-r--r-- | sys/dev/acpi/acpicpu.c | 101 |
1 files changed, 70 insertions, 31 deletions
diff --git a/sys/dev/acpi/acpicpu.c b/sys/dev/acpi/acpicpu.c index 5bb492448f0..e871cade899 100644 --- a/sys/dev/acpi/acpicpu.c +++ b/sys/dev/acpi/acpicpu.c @@ -1,4 +1,4 @@ -/* $OpenBSD: acpicpu.c,v 1.10 2006/10/12 16:38:21 jordan Exp $ */ +/* $OpenBSD: acpicpu.c,v 1.11 2006/12/19 16:20:01 gwk Exp $ */ /* * Copyright (c) 2005 Marco Peereboom <marco@openbsd.org> * @@ -18,6 +18,7 @@ #include <sys/param.h> #include <sys/proc.h> #include <sys/signalvar.h> +#include <sys/sysctl.h> #include <sys/systm.h> #include <sys/device.h> #include <sys/malloc.h> @@ -38,6 +39,7 @@ int acpicpu_match(struct device *, void *, void *); void acpicpu_attach(struct device *, struct device *, void *); int acpicpu_notify(struct aml_node *, int, void *); +void acpicpu_setperf(int); struct acpicpu_softc { struct device sc_dev; @@ -65,6 +67,15 @@ struct cfdriver acpicpu_cd = { NULL, "acpicpu", DV_DULL }; +extern int setperf_prio; + +#ifdef __i386__ +struct acpicpu_softc *acpicpu_sc[I386_MAXPROCS]; +#elif __amd64__ +extern int cpuspeed; +struct acpicpu_softc *acpicpu_sc[X86_MAXPROCS]; +#endif + int acpicpu_match(struct device *parent, void *match, void *aux) { @@ -119,6 +130,13 @@ acpicpu_attach(struct device *parent, struct device *self, void *aux) aml_register_notify(sc->sc_devnode->parent, NULL, acpicpu_notify, sc); + + if (setperf_prio < 30) { + cpu_setperf = acpicpu_setperf; + setperf_prio = 30; + } + acpicpu_sc[sc->sc_dev.dv_unit] = sc; + } int @@ -171,35 +189,6 @@ acpicpu_getpct(struct acpicpu_softc *sc) sc->sc_pct.pct_status.grd_gas.access_size, sc->sc_pct.pct_status.grd_gas.address); -#if 0 - char pb[8]; - - acpi_gasio(sc->sc_acpi, ACPI_IOREAD, - sc->sc_pct.pct_ctrl.grd_gas.address_space_id, - sc->sc_pct.pct_ctrl.grd_gas.address, - 1, - 4, - //sc->sc_pct.pct_ctrl.grd_gas.register_bit_width >> 3, - pb); - - acpi_gasio(sc->sc_acpi, ACPI_IOWRITE, - sc->sc_pct.pct_ctrl.grd_gas.address_space_id, - sc->sc_pct.pct_ctrl.grd_gas.address, - 1, - 4, - //sc->sc_pct.pct_ctrl.grd_gas.register_bit_width >> 3, - &sc->sc_pss[3].pss_ctrl); - - acpi_gasio(sc->sc_acpi, ACPI_IOREAD, - sc->sc_pct.pct_ctrl.grd_gas.address_space_id, - sc->sc_pct.pct_ctrl.grd_gas.address, - 1, - 4, - //sc->sc_pct.pct_ctrl.grd_gas.register_bit_width >> 3, - pb); - printf("acpicpu: %02x %02x %02x %02x\n", pb[0], pb[1], pb[2], pb[3]); -#endif - return (0); } @@ -262,6 +251,56 @@ acpicpu_notify(struct aml_node *node, int notify_type, void *arg) break; } - return (0); } + +void +acpicpu_setperf(int level) { + struct acpicpu_softc *sc; + struct acpicpu_pss *pss = NULL; + int high, low, freq, i; + u_int32_t status; + + sc = acpicpu_sc[cpu_number()]; + high = sc->sc_pss[0].pss_core_freq; + low = sc->sc_pss[sc->sc_pss_len - 1].pss_core_freq; + freq = low + (high - low) * level / 100; + + for (i = 0; i < sc->sc_pss_len; i++) { + if (sc->sc_pss[i].pss_core_freq <= freq) { + pss = &sc->sc_pss[i]; + break; + } + } + + if (pss == NULL) + return; + + acpi_gasio(sc->sc_acpi, ACPI_IOREAD, + sc->sc_pct.pct_status.grd_gas.address_space_id, + sc->sc_pct.pct_status.grd_gas.address, 1, 4, + &status); + + /* Are we already at the requested frequency? */ + if (status == pss->pss_status) + return; + + acpi_gasio(sc->sc_acpi, ACPI_IOWRITE, + sc->sc_pct.pct_ctrl.grd_gas.address_space_id, + sc->sc_pct.pct_ctrl.grd_gas.address, 1, 4, + &pss->pss_ctrl); + + acpi_gasio(sc->sc_acpi, ACPI_IOREAD, + sc->sc_pct.pct_status.grd_gas.address_space_id, + sc->sc_pct.pct_status.grd_gas.address, 1, 4, + &status); + + /* Did the transition succeed? */ + if (status == pss->pss_status) +#ifdef __i386__ + pentium_mhz = pss->pss_core_freq; +#elif __amd64__ + cpuspeed = pss->pss_core_freq; +#endif + return; +} |