static void
acpi_cst_cx_probe(struct acpi_cst_softc *sc)
{
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
/* Use initial sleep value of 1 sec. to start with lowest idle state. */
sc->cst_prev_sleep = 1000000;
sc->cst_cx_lowest = 0;
sc->cst_cx_lowest_req = 0;
/*
* Check for the ACPI 2.0 _CST sleep states object. If we can't find
* any, we'll revert to FADT/P_BLK Cx control method which will be
* handled by acpi_cst_postattach. We need to defer to after having
* probed all the cpus in the system before probing for Cx states from
* FADT as we may already have found cpus with valid _CST packages.
*/
if (!acpi_cst_use_fadt && acpi_cst_cx_probe_cst(sc, 0) != 0) {
/*
* We were unable to find a _CST package for this cpu or there
* was an error parsing it. Switch back to generic mode.
*/
acpi_cst_use_fadt = TRUE;
if (bootverbose)
device_printf(sc->cst_dev, "switching to FADT Cx mode\n");
}
/*
* TODO: _CSD Package should be checked here.
*/
}
static void
acpi_cst_cx_reprobe_cst_handler(struct cpuhelper_msg *msg)
{
int error;
error = acpi_cst_cx_probe_cst(msg->ch_cbarg, 1);
cpuhelper_replymsg(msg, error);
}
static void
acpi_cst_cx_reprobe_cst_handler(netmsg_t msg)
{
struct netmsg_acpi_cst *rmsg = (struct netmsg_acpi_cst *)msg;
int error;
error = acpi_cst_cx_probe_cst(rmsg->sc, 1);
lwkt_replymsg(&rmsg->base.lmsg, error);
}
