diff options
| -rw-r--r-- | sys/arch/i386/pci/elan520.c | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/sys/arch/i386/pci/elan520.c b/sys/arch/i386/pci/elan520.c index 9192e32a78f..b73374524f9 100644 --- a/sys/arch/i386/pci/elan520.c +++ b/sys/arch/i386/pci/elan520.c @@ -1,4 +1,4 @@ -/* $OpenBSD: elan520.c,v 1.4 2003/10/07 13:01:18 markus Exp $ */ +/* $OpenBSD: elan520.c,v 1.5 2003/12/24 10:35:59 markus Exp $ */ /* $NetBSD: elan520.c,v 1.4 2002/10/02 05:47:15 thorpej Exp $ */ /*- @@ -47,6 +47,7 @@ #include <sys/param.h> #include <sys/systm.h> #include <sys/device.h> +#include <sys/sysctl.h> #include <machine/bus.h> @@ -59,10 +60,12 @@ struct elansc_softc { struct device sc_dev; bus_space_tag_t sc_memt; bus_space_handle_t sc_memh; -}; +} *elansc; int elansc_match(struct device *, void *, void *); void elansc_attach(struct device *, struct device *, void *); +int elansc_cpuspeed(void *, size_t *, void *, size_t); +int elansc_setperf(void *, size_t *, void *, size_t); void elansc_wdogctl(struct elansc_softc *, int, uint16_t); #define elansc_wdogctl_reset(sc) elansc_wdogctl(sc, 1, 0) @@ -140,6 +143,9 @@ elansc_attach(struct device *parent, struct device *self, void *aux) elansc_wdogctl_reset(sc); wdog_register(sc, elansc_wdogctl_cb); + elansc = sc; + cpu_cpuspeed = elansc_cpuspeed; + cpu_setperf = elansc_setperf; } void @@ -212,3 +218,45 @@ elansc_wdogctl_cb(void *self, int period) } return (period); } + +int +elansc_cpuspeed(void *oldp, size_t *oldlenp, void *newp, size_t newlen) +{ + static const int elansc_mhz[] = { 0, 100, 133, 999 }; + uint8_t cpuctl; + + cpuctl = bus_space_read_1(elansc->sc_memt, elansc->sc_memh, + MMCR_CPUCTL); + return (sysctl_rdint(oldp, oldlenp, newp, + elansc_mhz[cpuctl & CPUCTL_CPU_CLK_SPD_MASK])); +} + +int +elansc_setperf(void *oldp, size_t *oldlenp, void *newp, size_t newlen) +{ + static int level = 100; + int error; + uint32_t eflags; + uint8_t cpuctl, speed; + + if ((error = sysctl_int(oldp, oldlenp, newp, newlen, &level))) + return (error); + if (newp == NULL) + return (0); + level = (level > 50) ? 100 : 0; + + cpuctl = bus_space_read_1(elansc->sc_memt, elansc->sc_memh, + MMCR_CPUCTL); + speed = (level == 100) ? 2 : 1; + if ((cpuctl & CPUCTL_CPU_CLK_SPD_MASK) == speed) + return (0); + + eflags = read_eflags(); + disable_intr(); + bus_space_write_1(elansc->sc_memt, elansc->sc_memh, MMCR_CPUCTL, + (cpuctl & ~CPUCTL_CPU_CLK_SPD_MASK) | speed); + enable_intr(); + write_eflags(eflags); + + return (0); +} |