static int
acpi_cpu_cst_attach(device_t dev)
{
ACPI_BUFFER buf;
ACPI_OBJECT *obj;
struct mdglobaldata *md;
struct acpi_cpu_softc *sc;
ACPI_STATUS status;
int cpu_id;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
sc->cpu_dev = dev;
sc->cpu_parent = device_get_softc(device_get_parent(dev));
sc->cpu_handle = acpi_get_handle(dev);
cpu_id = acpi_get_magic(dev);
cpu_softc[cpu_id] = sc;
md = (struct mdglobaldata *)globaldata_find(device_get_unit(dev));
sc->md = md;
cpu_smi_cmd = AcpiGbl_FADT.SmiCommand;
cpu_cst_cnt = AcpiGbl_FADT.CstControl;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObject(sc->cpu_handle, NULL, NULL, &buf);
if (ACPI_FAILURE(status)) {
device_printf(dev, "attach failed to get Processor obj - %s\n",
AcpiFormatException(status));
return (ENXIO);
}
obj = (ACPI_OBJECT *)buf.Pointer;
sc->cpu_p_blk = obj->Processor.PblkAddress;
sc->cpu_p_blk_len = obj->Processor.PblkLength;
sc->cpu_acpi_id = obj->Processor.ProcId;
AcpiOsFree(obj);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "acpi_cpu%d: P_BLK at %#x/%d\n",
device_get_unit(dev), sc->cpu_p_blk, sc->cpu_p_blk_len));
/*
* If this is the first cpu we attach, create and initialize the generic
* resources that will be used by all acpi cpu devices.
*/
if (device_get_unit(dev) == 0) {
/* Assume we won't be using generic Cx mode by default */
cpu_cx_generic = FALSE;
/* Queue post cpu-probing task handler */
AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_cpu_startup, NULL);
}
/* Probe for Cx state support. */
acpi_cpu_cx_probe(sc);
/* Finally, call identify and probe/attach for child devices. */
bus_generic_probe(dev);
bus_generic_attach(dev);
return (0);
}
static int
acpi_cpu_cst_probe(device_t dev)
{
int cpu_id;
if (acpi_disabled("cpu_cst") || acpi_get_type(dev) != ACPI_TYPE_PROCESSOR)
return (ENXIO);
cpu_id = acpi_get_magic(dev);
if (cpu_softc == NULL)
cpu_softc = kmalloc(sizeof(struct acpi_cpu_softc *) *
SMP_MAXCPU, M_TEMP /* XXX */, M_INTWAIT | M_ZERO);
/*
* Check if we already probed this processor. We scan the bus twice
* so it's possible we've already seen this one.
*/
if (cpu_softc[cpu_id] != NULL) {
device_printf(dev, "CPU%d cstate already exist\n", cpu_id);
return (ENXIO);
}
/* Mark this processor as in-use and save our derived id for attach. */
cpu_softc[cpu_id] = (void *)1;
device_set_desc(dev, "ACPI CPU C-State");
return (0);
}
static int
acpi_cst_attach(device_t dev)
{
ACPI_BUFFER buf;
ACPI_OBJECT *obj;
struct acpi_cst_softc *sc;
ACPI_STATUS status;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
sc->cst_dev = dev;
sc->cst_parent = device_get_softc(device_get_parent(dev));
sc->cst_handle = acpi_get_handle(dev);
sc->cst_cpuid = acpi_get_magic(dev);
acpi_cst_softc[sc->cst_cpuid] = sc;
acpi_cst_smi_cmd = AcpiGbl_FADT.SmiCommand;
acpi_cst_ctrl = AcpiGbl_FADT.CstControl;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObject(sc->cst_handle, NULL, NULL, &buf);
if (ACPI_FAILURE(status)) {
device_printf(dev, "attach failed to get Processor obj - %s\n",
AcpiFormatException(status));
acpi_cst_softc[sc->cst_cpuid] = NULL;
return (ENXIO);
}
obj = (ACPI_OBJECT *)buf.Pointer;
sc->cst_p_blk = obj->Processor.PblkAddress;
sc->cst_p_blk_len = obj->Processor.PblkLength;
AcpiOsFree(obj);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "cpu_cst%d: P_BLK at %#x/%d\n",
device_get_unit(dev), sc->cst_p_blk, sc->cst_p_blk_len));
/*
* If this is the first cpu we attach, create and initialize the generic
* resources that will be used by all acpi cpu devices.
*/
if (device_get_unit(dev) == 0) {
/* Assume we won't be using FADT for Cx states by default */
acpi_cst_use_fadt = FALSE;
/* Queue post cpu-probing task handler */
AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_cst_postattach, NULL);
}
/* Probe for Cx state support. */
acpi_cst_cx_probe(sc);
sc->cst_flags |= ACPI_CST_FLAG_ATTACHED;
return (0);
}
static int
acpi_cpu_attach(device_t dev)
{
struct acpi_cpux_softc *sc = device_get_softc(dev);
ACPI_HANDLE handle;
device_t child;
int cpu_id, cpu_features;
struct acpi_softc *acpi_sc;
handle = acpi_get_handle(dev);
cpu_id = acpi_get_magic(dev);
acpi_sc = acpi_device_get_parent_softc(dev);
if (cpu_id == 0) {
sysctl_ctx_init(&sc->glob_sysctl_ctx);
sc->glob_sysctl_tree = SYSCTL_ADD_NODE(&sc->glob_sysctl_ctx,
SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
OID_AUTO, "cpu", CTLFLAG_RD, 0,
"node for CPU global settings");
if (sc->glob_sysctl_tree == NULL)
return ENOMEM;
}
sysctl_ctx_init(&sc->pcpu_sysctl_ctx);
sc->pcpu_sysctl_tree = SYSCTL_ADD_NODE(&sc->pcpu_sysctl_ctx,
SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
OID_AUTO, device_get_nameunit(dev), CTLFLAG_RD, 0,
"node for per-CPU settings");
if (sc->pcpu_sysctl_tree == NULL) {
sysctl_ctx_free(&sc->glob_sysctl_ctx);
return ENOMEM;
}
/*
* Before calling any CPU methods, collect child driver feature hints
* and notify ACPI of them. We support unified SMP power control
* so advertise this ourselves. Note this is not the same as independent
* SMP control where each CPU can have different settings.
*/
cpu_features = ACPI_PDC_MP_C1PXTX | ACPI_PDC_MP_C2C3;
cpu_features |= acpi_cpu_md_features();
/*
* CPU capabilities are specified as a buffer of 32-bit integers:
* revision, count, and one or more capabilities.
*/
if (cpu_features) {
ACPI_OBJECT_LIST arglist;
uint32_t cap_set[3];
ACPI_OBJECT arg[4];
ACPI_STATUS status;
/* UUID needed by _OSC evaluation */
static uint8_t cpu_oscuuid[16] = {
0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29, 0xBE, 0x47,
0x9E, 0xBD, 0xD8, 0x70, 0x58, 0x71, 0x39, 0x53
};
arglist.Pointer = arg;
arglist.Count = 4;
arg[0].Type = ACPI_TYPE_BUFFER;
arg[0].Buffer.Length = sizeof(cpu_oscuuid);
arg[0].Buffer.Pointer = cpu_oscuuid; /* UUID */
arg[1].Type = ACPI_TYPE_INTEGER;
arg[1].Integer.Value = 1; /* revision */
arg[2].Type = ACPI_TYPE_INTEGER;
arg[2].Integer.Value = 2; /* # of capabilities integers */
arg[3].Type = ACPI_TYPE_BUFFER;
arg[3].Buffer.Length = sizeof(cap_set[0]) * 2; /* capabilities buffer */
arg[3].Buffer.Pointer = (uint8_t *)cap_set;
cap_set[0] = 0;
cap_set[1] = cpu_features;
status = AcpiEvaluateObject(handle, "_OSC", &arglist, NULL);
if (!ACPI_SUCCESS(status)) {
if (bootverbose)
device_printf(dev, "_OSC failed, use _PDC\n");
arglist.Pointer = arg;
arglist.Count = 1;
arg[0].Type = ACPI_TYPE_BUFFER;
arg[0].Buffer.Length = sizeof(cap_set);
arg[0].Buffer.Pointer = (uint8_t *)cap_set;
cap_set[0] = 1; /* revision */
cap_set[1] = 1; /* # of capabilities integers */
cap_set[2] = cpu_features;
AcpiEvaluateObject(handle, "_PDC", &arglist, NULL);
}
}
child = BUS_ADD_CHILD(dev, dev, 0, "cpu_cst", -1);
if (child == NULL)
return ENXIO;
acpi_set_handle(child, handle);
acpi_set_magic(child, cpu_id);
sc->cpux_cst = child;
child = BUS_ADD_CHILD(dev, dev, 0, "cpu_pst", -1);
if (child == NULL)
return ENXIO;
acpi_set_handle(child, handle);
acpi_set_magic(child, cpu_id);
bus_generic_attach(dev);
AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, acpi_cpu_notify, sc);
return 0;
}
static int
acpi_cpu_attach(device_t dev)
{
ACPI_BUFFER buf;
ACPI_OBJECT arg[4], *obj;
ACPI_OBJECT_LIST arglist;
struct pcpu *pcpu_data;
struct acpi_cpu_softc *sc;
struct acpi_softc *acpi_sc;
ACPI_STATUS status;
u_int features;
int cpu_id, drv_count, i;
driver_t **drivers;
uint32_t cap_set[3];
/* UUID needed by _OSC evaluation */
static uint8_t cpu_oscuuid[16] = { 0x16, 0xA6, 0x77, 0x40, 0x0C, 0x29,
0xBE, 0x47, 0x9E, 0xBD, 0xD8, 0x70,
0x58, 0x71, 0x39, 0x53 };
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
sc = device_get_softc(dev);
sc->cpu_dev = dev;
sc->cpu_handle = acpi_get_handle(dev);
cpu_id = acpi_get_magic(dev);
cpu_softc[cpu_id] = sc;
pcpu_data = pcpu_find(cpu_id);
pcpu_data->pc_device = dev;
sc->cpu_pcpu = pcpu_data;
cpu_smi_cmd = AcpiGbl_FADT.SmiCommand;
cpu_cst_cnt = AcpiGbl_FADT.CstControl;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
status = AcpiEvaluateObject(sc->cpu_handle, NULL, NULL, &buf);
if (ACPI_FAILURE(status)) {
device_printf(dev, "attach failed to get Processor obj - %s\n",
AcpiFormatException(status));
return (ENXIO);
}
obj = (ACPI_OBJECT *)buf.Pointer;
sc->cpu_p_blk = obj->Processor.PblkAddress;
sc->cpu_p_blk_len = obj->Processor.PblkLength;
sc->cpu_acpi_id = obj->Processor.ProcId;
AcpiOsFree(obj);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "acpi_cpu%d: P_BLK at %#x/%d\n",
device_get_unit(dev), sc->cpu_p_blk, sc->cpu_p_blk_len));
/*
* If this is the first cpu we attach, create and initialize the generic
* resources that will be used by all acpi cpu devices.
*/
if (device_get_unit(dev) == 0) {
/* Assume we won't be using generic Cx mode by default */
cpu_cx_generic = FALSE;
/* Install hw.acpi.cpu sysctl tree */
acpi_sc = acpi_device_get_parent_softc(dev);
sysctl_ctx_init(&cpu_sysctl_ctx);
cpu_sysctl_tree = SYSCTL_ADD_NODE(&cpu_sysctl_ctx,
SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), OID_AUTO, "cpu",
CTLFLAG_RD, 0, "node for CPU children");
/* Queue post cpu-probing task handler */
AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_cpu_startup, NULL);
}
/*
* Before calling any CPU methods, collect child driver feature hints
* and notify ACPI of them. We support unified SMP power control
* so advertise this ourselves. Note this is not the same as independent
* SMP control where each CPU can have different settings.
*/
sc->cpu_features = ACPI_CAP_SMP_SAME | ACPI_CAP_SMP_SAME_C3;
if (devclass_get_drivers(acpi_cpu_devclass, &drivers, &drv_count) == 0) {
for (i = 0; i < drv_count; i++) {
if (ACPI_GET_FEATURES(drivers[i], &features) == 0)
sc->cpu_features |= features;
}
free(drivers, M_TEMP);
}
/*
* CPU capabilities are specified as a buffer of 32-bit integers:
* revision, count, and one or more capabilities. The revision of
* "1" is not specified anywhere but seems to match Linux.
*/
if (sc->cpu_features) {
arglist.Pointer = arg;
arglist.Count = 1;
arg[0].Type = ACPI_TYPE_BUFFER;
arg[0].Buffer.Length = sizeof(cap_set);
arg[0].Buffer.Pointer = (uint8_t *)cap_set;
cap_set[0] = 1; /* revision */
cap_set[1] = 1; /* number of capabilities integers */
cap_set[2] = sc->cpu_features;
AcpiEvaluateObject(sc->cpu_handle, "_PDC", &arglist, NULL);
/*
* On some systems we need to evaluate _OSC so that the ASL
* loads the _PSS and/or _PDC methods at runtime.
*
* TODO: evaluate failure of _OSC.
*/
arglist.Pointer = arg;
arglist.Count = 4;
arg[0].Type = ACPI_TYPE_BUFFER;
arg[0].Buffer.Length = sizeof(cpu_oscuuid);
arg[0].Buffer.Pointer = cpu_oscuuid; /* UUID */
arg[1].Type = ACPI_TYPE_INTEGER;
arg[1].Integer.Value = 1; /* revision */
arg[2].Type = ACPI_TYPE_INTEGER;
arg[2].Integer.Value = 1; /* count */
arg[3].Type = ACPI_TYPE_BUFFER;
arg[3].Buffer.Length = sizeof(cap_set); /* Capabilities buffer */
arg[3].Buffer.Pointer = (uint8_t *)cap_set;
cap_set[0] = 0;
AcpiEvaluateObject(sc->cpu_handle, "_OSC", &arglist, NULL);
}
/* Probe for Cx state support. */
acpi_cpu_cx_probe(sc);
/* Finally, call identify and probe/attach for child devices. */
bus_generic_probe(dev);
bus_generic_attach(dev);
return (0);
}
static int
acpi_cpu_attach(device_t dev)
{
struct acpi_cpu_softc *sc = device_get_softc(dev);
ACPI_HANDLE handle;
device_t child;
int cpu_id, cpu_features;
struct acpi_softc *acpi_sc;
sc->cpu_dev = dev;
handle = acpi_get_handle(dev);
cpu_id = acpi_get_magic(dev);
acpi_sc = acpi_device_get_parent_softc(dev);
if (cpu_id == 0) {
sysctl_ctx_init(&sc->glob_sysctl_ctx);
sc->glob_sysctl_tree = SYSCTL_ADD_NODE(&sc->glob_sysctl_ctx,
SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
OID_AUTO, "cpu", CTLFLAG_RD, 0,
"node for CPU global settings");
if (sc->glob_sysctl_tree == NULL)
return ENOMEM;
}
sysctl_ctx_init(&sc->pcpu_sysctl_ctx);
sc->pcpu_sysctl_tree = SYSCTL_ADD_NODE(&sc->pcpu_sysctl_ctx,
SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
OID_AUTO, device_get_nameunit(dev), CTLFLAG_RD, 0,
"node for per-CPU settings");
if (sc->pcpu_sysctl_tree == NULL) {
sysctl_ctx_free(&sc->glob_sysctl_ctx);
return ENOMEM;
}
/*
* Before calling any CPU methods, collect child driver feature hints
* and notify ACPI of them. We support unified SMP power control
* so advertise this ourselves. Note this is not the same as independent
* SMP control where each CPU can have different settings.
*/
cpu_features = ACPI_PDC_MP_C1PXTX | ACPI_PDC_MP_C2C3;
cpu_features |= acpi_cpu_md_features();
/*
* CPU capabilities are specified as a buffer of 32-bit integers:
* revision, count, and one or more capabilities.
*/
if (cpu_features) {
uint32_t cap_set[3];
ACPI_STATUS status;
cap_set[0] = 0;
cap_set[1] = cpu_features;
status = acpi_eval_osc(dev, handle,
"4077A616-290C-47BE-9EBD-D87058713953", 1, cap_set, 2);
if (ACPI_FAILURE(status)) {
ACPI_OBJECT_LIST arglist;
ACPI_OBJECT arg[4];
if (bootverbose)
device_printf(dev, "_OSC failed, using _PDC\n");
arglist.Pointer = arg;
arglist.Count = 1;
arg[0].Type = ACPI_TYPE_BUFFER;
arg[0].Buffer.Length = sizeof(cap_set);
arg[0].Buffer.Pointer = (uint8_t *)cap_set;
cap_set[0] = 1; /* revision */
cap_set[1] = 1; /* # of capabilities integers */
cap_set[2] = cpu_features;
AcpiEvaluateObject(handle, "_PDC", &arglist, NULL);
}
}
ksnprintf(sc->cpu_sensdev.xname, sizeof(sc->cpu_sensdev.xname), "%s",
device_get_nameunit(dev));
sensordev_install(&sc->cpu_sensdev);
child = BUS_ADD_CHILD(dev, dev, 0, "cpu_cst", -1);
if (child == NULL)
return ENXIO;
acpi_set_handle(child, handle);
acpi_set_magic(child, cpu_id);
sc->cpu_cst = child;
child = BUS_ADD_CHILD(dev, dev, 0, "cpu_pst", -1);
if (child == NULL)
return ENXIO;
acpi_set_handle(child, handle);
acpi_set_magic(child, cpu_id);
sc->cpu_pst = child;
bus_generic_probe(dev);
bus_generic_attach(dev);
AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, acpi_cpu_notify, sc);
return 0;
}