diff options
| -rw-r--r-- | sys/dev/acpica/acpi_cpu.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/sys/dev/acpica/acpi_cpu.c b/sys/dev/acpica/acpi_cpu.c index 5aa4097..d35a526 100644 --- a/sys/dev/acpica/acpi_cpu.c +++ b/sys/dev/acpica/acpi_cpu.c @@ -876,7 +876,8 @@ acpi_cpu_cx_list(struct acpi_cpu_softc *sc) sbuf_new(&sb, sc->cpu_cx_supported, sizeof(sc->cpu_cx_supported), SBUF_FIXEDLEN); for (i = 0; i < sc->cpu_cx_count; i++) - sbuf_printf(&sb, "C%d/%d ", i + 1, sc->cpu_cx_states[i].trans_lat); + sbuf_printf(&sb, "C%d/%d/%d ", i + 1, sc->cpu_cx_states[i].type, + sc->cpu_cx_states[i].trans_lat); sbuf_trim(&sb); sbuf_finish(&sb); } @@ -921,6 +922,7 @@ acpi_cpu_idle() { struct acpi_cpu_softc *sc; struct acpi_cx *cx_next; + uint64_t cputicks; uint32_t start_time, end_time; int bm_active, cx_next_idx, i; @@ -960,11 +962,12 @@ acpi_cpu_idle() * driver polling for new devices keeps this bit set all the * time if USB is loaded. */ - if ((cpu_quirks & CPU_QUIRK_NO_BM_CTRL) == 0) { + if ((cpu_quirks & CPU_QUIRK_NO_BM_CTRL) == 0 && + cx_next_idx > sc->cpu_non_c3) { AcpiReadBitRegister(ACPI_BITREG_BUS_MASTER_STATUS, &bm_active); if (bm_active != 0) { AcpiWriteBitRegister(ACPI_BITREG_BUS_MASTER_STATUS, 1); - cx_next_idx = min(cx_next_idx, sc->cpu_non_c3); + cx_next_idx = sc->cpu_non_c3; } } @@ -980,11 +983,10 @@ acpi_cpu_idle() * we are called inside critical section, delaying context switch. */ if (cx_next->type == ACPI_STATE_C1) { - AcpiHwRead(&start_time, &AcpiGbl_FADT.XPmTimerBlock); + cputicks = cpu_ticks(); acpi_cpu_c1(); - AcpiHwRead(&end_time, &AcpiGbl_FADT.XPmTimerBlock); - end_time = PM_USEC(acpi_TimerDelta(end_time, start_time)); - if (curthread->td_critnest == 0) + end_time = ((cpu_ticks() - cputicks) << 20) / cpu_tickrate(); + if (curthread->td_critnest == 0) end_time = min(end_time, 500000 / hz); sc->cpu_prev_sleep = (sc->cpu_prev_sleep * 3 + end_time) / 4; return; @@ -1008,7 +1010,13 @@ acpi_cpu_idle() * get the time very close to the CPU start/stop clock logic, this * is the only reliable time source. */ - AcpiHwRead(&start_time, &AcpiGbl_FADT.XPmTimerBlock); + if (cx_next->type == ACPI_STATE_C3) { + AcpiHwRead(&start_time, &AcpiGbl_FADT.XPmTimerBlock); + cputicks = 0; + } else { + start_time = 0; + cputicks = cpu_ticks(); + } CPU_GET_REG(cx_next->p_lvlx, 1); /* @@ -1018,7 +1026,11 @@ acpi_cpu_idle() * margin that we are certain to have a correct value. */ AcpiHwRead(&end_time, &AcpiGbl_FADT.XPmTimerBlock); - AcpiHwRead(&end_time, &AcpiGbl_FADT.XPmTimerBlock); + if (cx_next->type == ACPI_STATE_C3) { + AcpiHwRead(&end_time, &AcpiGbl_FADT.XPmTimerBlock); + end_time = acpi_TimerDelta(end_time, start_time); + } else + end_time = ((cpu_ticks() - cputicks) << 20) / cpu_tickrate(); /* Enable bus master arbitration and disable bus master wakeup. */ if (cx_next->type == ACPI_STATE_C3 && @@ -1028,8 +1040,6 @@ acpi_cpu_idle() } ACPI_ENABLE_IRQS(); - /* Find the actual time asleep in microseconds. */ - end_time = acpi_TimerDelta(end_time, start_time); sc->cpu_prev_sleep = (sc->cpu_prev_sleep * 3 + PM_USEC(end_time)) / 4; } |
