Differential D18028 Diff 50619 sys/x86/cpufreq/hwpstate_amd.c

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sys/x86/cpufreq/hwpstate_amd.c

This file was moved from sys/x86/cpufreq/hwpstate.c.

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static int hwpstate_type(device_t dev, int *type);		static int hwpstate_type(device_t dev, int *type);
static int hwpstate_shutdown(device_t dev);		static int hwpstate_shutdown(device_t dev);
static int hwpstate_features(driver_t driver, u_int features);		static int hwpstate_features(driver_t driver, u_int features);
static int hwpstate_get_info_from_acpi_perf(device_t dev, device_t perf_dev);		static int hwpstate_get_info_from_acpi_perf(device_t dev, device_t perf_dev);
static int hwpstate_get_info_from_msr(device_t dev);		static int hwpstate_get_info_from_msr(device_t dev);
static int hwpstate_goto_pstate(device_t dev, int pstate_id);		static int hwpstate_goto_pstate(device_t dev, int pstate_id);

static int hwpstate_verbose;		static int hwpstate_verbose;
SYSCTL_INT(_debug, OID_AUTO, hwpstate_verbose, CTLFLAG_RWTUN,		SYSCTL_INT(_debug, OID_AUTO, hwpstate_amd_verbose, CTLFLAG_RWTUN,
&hwpstate_verbose, 0, "Debug hwpstate");		&hwpstate_verbose, 0, "Debug hwpstate");

static int hwpstate_verify;		static int hwpstate_verify;
SYSCTL_INT(_debug, OID_AUTO, hwpstate_verify, CTLFLAG_RWTUN,		SYSCTL_INT(_debug, OID_AUTO, hwpstate_amd_verify, CTLFLAG_RWTUN,
&hwpstate_verify, 0, "Verify P-state after setting");		&hwpstate_verify, 0, "Verify P-state after setting");

static device_method_t hwpstate_methods[] = {		static device_method_t hwpstate_methods[] = {
/* Device interface */		/* Device interface */
DEVMETHOD(device_identify, hwpstate_identify),		DEVMETHOD(device_identify, hwpstate_identify),
DEVMETHOD(device_probe, hwpstate_probe),		DEVMETHOD(device_probe, hwpstate_probe),
DEVMETHOD(device_attach, hwpstate_attach),		DEVMETHOD(device_attach, hwpstate_attach),
DEVMETHOD(device_detach, hwpstate_detach),		DEVMETHOD(device_detach, hwpstate_detach),
DEVMETHOD(device_shutdown, hwpstate_shutdown),		DEVMETHOD(device_shutdown, hwpstate_shutdown),

/* cpufreq interface */		/* cpufreq interface */
DEVMETHOD(cpufreq_drv_set, hwpstate_set),		DEVMETHOD(cpufreq_drv_set, hwpstate_set),
DEVMETHOD(cpufreq_drv_get, hwpstate_get),		DEVMETHOD(cpufreq_drv_get, hwpstate_get),
DEVMETHOD(cpufreq_drv_settings, hwpstate_settings),		DEVMETHOD(cpufreq_drv_settings, hwpstate_settings),
DEVMETHOD(cpufreq_drv_type, hwpstate_type),		DEVMETHOD(cpufreq_drv_type, hwpstate_type),

/* ACPI interface */		/* ACPI interface */
DEVMETHOD(acpi_get_features, hwpstate_features),		DEVMETHOD(acpi_get_features, hwpstate_features),

{0, 0}		{0, 0}
};		};

static devclass_t hwpstate_devclass;		static devclass_t hwpstate_amd_devclass;
static driver_t hwpstate_driver = {		static driver_t hwpstate_amd_driver = {
"hwpstate",		"hwpstate_amd",
		jhbUnsubmitted Not Done Inline Actions You don't actually have to rename this driver FWIW. It's fine to have multiple drivers with the same name. jhb: You don't actually have to rename this driver FWIW. It's fine to have multiple drivers with…
		cemUnsubmitted Not Done Inline Actions I don't object to naming different things differently. It can reduce confusion in reports / debugging. cem: I don't object to naming different things differently. It can reduce confusion in reports /…
hwpstate_methods,		hwpstate_methods,
sizeof(struct hwpstate_softc),		sizeof(struct hwpstate_softc),
};		};

DRIVER_MODULE(hwpstate, cpu, hwpstate_driver, hwpstate_devclass, 0, 0);		DRIVER_MODULE(hwpstate_amd, cpu, hwpstate_amd_driver, hwpstate_amd_devclass, 0, 0);

/*		/*
* Go to Px-state on all cpus considering the limit.		* Go to Px-state on all cpus considering the limit.
*/		*/
static int		static int
hwpstate_goto_pstate(device_t dev, int id)		hwpstate_goto_pstate(device_t dev, int id)
{		{
sbintime_t sbt;		sbintime_t sbt;
▲ Show 20 Lines • Show All 137 Lines • ▼ Show 20 Lines	hwpstate_type(device_t dev, int *type)
*type = CPUFREQ_TYPE_ABSOLUTE;		*type = CPUFREQ_TYPE_ABSOLUTE;
return (0);		return (0);
}		}

static void		static void
hwpstate_identify(driver_t *driver, device_t parent)		hwpstate_identify(driver_t *driver, device_t parent)
{		{

if (device_find_child(parent, "hwpstate", -1) != NULL)		if (device_find_child(parent, "hwpstate_amd", -1) != NULL)
return;		return;

if (cpu_vendor_id != CPU_VENDOR_AMD \|\| CPUID_TO_FAMILY(cpu_id) < 0x10)		if (cpu_vendor_id != CPU_VENDOR_AMD \|\| CPUID_TO_FAMILY(cpu_id) < 0x10)
return;		return;

/*		/*
* Check if hardware pstate enable bit is set.		* Check if hardware pstate enable bit is set.
*/		*/
if ((amd_pminfo & AMDPM_HW_PSTATE) == 0) {		if ((amd_pminfo & AMDPM_HW_PSTATE) == 0) {
HWPSTATE_DEBUG(parent, "hwpstate enable bit is not set.\n");		HWPSTATE_DEBUG(parent, "hwpstate enable bit is not set.\n");
return;		return;
}		}

if (resource_disabled("hwpstate", 0))		if (resource_disabled("hwpstate_amd", 0))
return;		return;
		cemUnsubmitted Done Inline Actions This deserves a note in UPDATING. It might be worth just honoring the old name on both Intel and AMD hardware; I don't really see a downside. cem: This deserves a note in UPDATING. It might be worth just honoring the old name on both Intel…
		jhbUnsubmitted Not Done Inline Actions I would probably just leave the name as-is as well FWIW. jhb: I would probably just leave the name as-is as well FWIW.

if (BUS_ADD_CHILD(parent, 10, "hwpstate", -1) == NULL)		if (BUS_ADD_CHILD(parent, 10, "hwpstate_amd", -1) == NULL)
device_printf(parent, "hwpstate: add child failed\n");		device_printf(parent, "hwpstate: add child failed\n");
}		}

static int		static int
hwpstate_probe(device_t dev)		hwpstate_probe(device_t dev)
{		{
struct hwpstate_softc *sc;		struct hwpstate_softc *sc;
device_t perf_dev;		device_t perf_dev;
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