Author: avg Date: Thu May 3 13:14:31 2018 New Revision: 333209 URL: https://svnweb.freebsd.org/changeset/base/333209
Log: hpet: use macros instead of magic values for the timer mode MFC after: 1 week Modified: head/sys/dev/acpica/acpi_hpet.c Modified: head/sys/dev/acpica/acpi_hpet.c ============================================================================== --- head/sys/dev/acpica/acpi_hpet.c Thu May 3 10:17:37 2018 (r333208) +++ head/sys/dev/acpica/acpi_hpet.c Thu May 3 13:14:31 2018 (r333209) @@ -96,6 +96,9 @@ struct hpet_softc { struct hpet_softc *sc; int num; int mode; +#define TIMER_STOPPED 0 +#define TIMER_PERIODIC 1 +#define TIMER_ONESHOT 2 int intr_rid; int irq; int pcpu_cpu; @@ -206,10 +209,10 @@ hpet_start(struct eventtimer *et, sbintime_t first, sb t = (mt->pcpu_master < 0) ? mt : &sc->t[mt->pcpu_slaves[curcpu]]; if (period != 0) { - t->mode = 1; + t->mode = TIMER_PERIODIC; t->div = (sc->freq * period) >> 32; } else { - t->mode = 2; + t->mode = TIMER_ONESHOT; t->div = 0; } if (first != 0) @@ -222,7 +225,7 @@ hpet_start(struct eventtimer *et, sbintime_t first, sb now = bus_read_4(sc->mem_res, HPET_MAIN_COUNTER); restart: t->next = now + fdiv; - if (t->mode == 1 && (t->caps & HPET_TCAP_PER_INT)) { + if (t->mode == TIMER_PERIODIC && (t->caps & HPET_TCAP_PER_INT)) { t->caps |= HPET_TCNF_TYPE; bus_write_4(sc->mem_res, HPET_TIMER_CAP_CNF(t->num), t->caps | HPET_TCNF_VAL_SET); @@ -253,7 +256,7 @@ hpet_stop(struct eventtimer *et) struct hpet_softc *sc = mt->sc; t = (mt->pcpu_master < 0) ? mt : &sc->t[mt->pcpu_slaves[curcpu]]; - t->mode = 0; + t->mode = TIMER_STOPPED; t->caps &= ~(HPET_TCNF_INT_ENB | HPET_TCNF_TYPE); bus_write_4(sc->mem_res, HPET_TIMER_CAP_CNF(t->num), t->caps); return (0); @@ -267,7 +270,7 @@ hpet_intr_single(void *arg) struct hpet_softc *sc = t->sc; uint32_t now; - if (t->mode == 0) + if (t->mode == TIMER_STOPPED) return (FILTER_STRAY); /* Check that per-CPU timer interrupt reached right CPU. */ if (t->pcpu_cpu >= 0 && t->pcpu_cpu != curcpu) { @@ -281,8 +284,9 @@ hpet_intr_single(void *arg) * Reload timer, hoping that next time may be more lucky * (system will manage proper interrupt binding). */ - if ((t->mode == 1 && (t->caps & HPET_TCAP_PER_INT) == 0) || - t->mode == 2) { + if ((t->mode == TIMER_PERIODIC && + (t->caps & HPET_TCAP_PER_INT) == 0) || + t->mode == TIMER_ONESHOT) { t->next = bus_read_4(sc->mem_res, HPET_MAIN_COUNTER) + sc->freq / 8; bus_write_4(sc->mem_res, HPET_TIMER_COMPARATOR(t->num), @@ -290,7 +294,7 @@ hpet_intr_single(void *arg) } return (FILTER_HANDLED); } - if (t->mode == 1 && + if (t->mode == TIMER_PERIODIC && (t->caps & HPET_TCAP_PER_INT) == 0) { t->next += t->div; now = bus_read_4(sc->mem_res, HPET_MAIN_COUNTER); @@ -298,8 +302,8 @@ hpet_intr_single(void *arg) t->next = now + t->div / 2; bus_write_4(sc->mem_res, HPET_TIMER_COMPARATOR(t->num), t->next); - } else if (t->mode == 2) - t->mode = 0; + } else if (t->mode == TIMER_ONESHOT) + t->mode = TIMER_STOPPED; mt = (t->pcpu_master < 0) ? t : &sc->t[t->pcpu_master]; if (mt->et.et_active) mt->et.et_event_cb(&mt->et, mt->et.et_arg); @@ -528,7 +532,7 @@ hpet_attach(device_t dev) t = &sc->t[i]; t->sc = sc; t->num = i; - t->mode = 0; + t->mode = TIMER_STOPPED; t->intr_rid = -1; t->irq = -1; t->pcpu_cpu = -1; @@ -878,10 +882,11 @@ hpet_resume(device_t dev) } } #endif - if (t->mode == 0) + if (t->mode == TIMER_STOPPED) continue; t->next = bus_read_4(sc->mem_res, HPET_MAIN_COUNTER); - if (t->mode == 1 && (t->caps & HPET_TCAP_PER_INT)) { + if (t->mode == TIMER_PERIODIC && + (t->caps & HPET_TCAP_PER_INT) != 0) { t->caps |= HPET_TCNF_TYPE; t->next += t->div; bus_write_4(sc->mem_res, HPET_TIMER_CAP_CNF(t->num), _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"