/*
* Look for an ECDT and if we find one, set up default GPE and
* space handlers to catch attempts to access EC space before
* we have a real driver instance in place.
*
* TODO: Some old Gateway laptops need us to fake up an ECDT or
* otherwise attach early so that _REG methods can run.
*/
void
acpi_ec_ecdt_probe(device_t parent)
{
ACPI_TABLE_ECDT *ecdt;
ACPI_STATUS status;
device_t child;
ACPI_HANDLE h;
struct acpi_ec_params *params;
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
/* Find and validate the ECDT. */
status = AcpiGetTable(ACPI_SIG_ECDT, 1, (ACPI_TABLE_HEADER **)&ecdt);
if (ACPI_FAILURE(status) ||
ecdt->Control.BitWidth != 8 ||
ecdt->Data.BitWidth != 8) {
return;
}
/* Create the child device with the given unit number. */
child = BUS_ADD_CHILD(parent, parent, 0, "acpi_ec", ecdt->Uid);
if (child == NULL) {
kprintf("%s: can't add child\n", __func__);
return;
}
/* Find and save the ACPI handle for this device. */
status = AcpiGetHandle(NULL, ecdt->Id, &h);
if (ACPI_FAILURE(status)) {
device_delete_child(parent, child);
kprintf("%s: can't get handle\n", __func__);
return;
}
acpi_set_handle(child, h);
/* Set the data and CSR register addresses. */
bus_set_resource(child, SYS_RES_IOPORT, 0, ecdt->Data.Address,
/*count*/1, -1);
bus_set_resource(child, SYS_RES_IOPORT, 1, ecdt->Control.Address,
/*count*/1, -1);
/*
* Store values for the probe/attach routines to use. Store the
* ECDT GPE bit and set the global lock flag according to _GLK.
* Note that it is not perfectly correct to be evaluating a method
* before initializing devices, but in practice this function
* should be safe to call at this point.
*/
params = kmalloc(sizeof(struct acpi_ec_params), M_TEMP, M_WAITOK | M_ZERO);
params->gpe_handle = NULL;
params->gpe_bit = ecdt->Gpe;
params->uid = ecdt->Uid;
acpi_GetInteger(h, "_GLK", ¶ms->glk);
acpi_set_private(child, params);
/* Finish the attach process. */
if (device_probe_and_attach(child) != 0)
device_delete_child(parent, child);
}
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)
{
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;
}
