static void
smapi_identify (driver_t *driver, device_t parent)
{
device_t child;
u_int32_t addr;
int length;
int rid;
if (!device_is_alive(parent))
return;
addr = bios_sigsearch(SMAPI_START, SMAPI_SIG, SMAPI_LEN,
SMAPI_STEP, SMAPI_OFF);
if (addr != 0) {
rid = 0;
length = ADDR2HDR(addr)->length;
child = BUS_ADD_CHILD(parent, 5, "smapi", -1);
device_set_driver(child, driver);
bus_set_resource(child, SYS_RES_MEMORY, rid, addr, length);
device_set_desc(child, "SMAPI BIOS");
}
return;
}
static void
acpi_pci_update_device(ACPI_HANDLE handle, device_t pci_child)
{
ACPI_STATUS status;
device_t child;
/*
* Lookup and remove the unused device that acpi0 creates when it walks
* the namespace creating devices.
*/
child = acpi_get_device(handle);
if (child != NULL) {
if (device_is_alive(child)) {
/*
* The TabletPC TC1000 has a second PCI-ISA bridge
* that has a _HID for an acpi_sysresource device.
* In that case, leave ACPI-CA's device data pointing
* at the ACPI-enumerated device.
*/
device_printf(child,
"Conflicts with PCI device %d:%d:%d\n",
pci_get_bus(pci_child), pci_get_slot(pci_child),
pci_get_function(pci_child));
return;
}
KASSERT(device_get_parent(child) ==
devclass_get_device(devclass_find("acpi"), 0),
("%s: child (%s)'s parent is not acpi0", __func__,
acpi_name(handle)));
device_delete_child(device_get_parent(child), child);
}
/*
* Update ACPI-CA to use the PCI enumerated device_t for this handle.
*/
status = AcpiDetachData(handle, acpi_fake_objhandler);
if (ACPI_FAILURE(status))
kprintf("WARNING: Unable to detach object data from %s - %s\n",
acpi_name(handle), AcpiFormatException(status));
status = AcpiAttachData(handle, acpi_fake_objhandler, pci_child);
if (ACPI_FAILURE(status))
kprintf("WARNING: Unable to attach object data to %s - %s\n",
acpi_name(handle), AcpiFormatException(status));
}
static void
vpd_identify (driver_t *driver, device_t parent)
{
device_t child;
u_int32_t addr;
int length;
int rid;
if (!device_is_alive(parent))
return;
addr = bios_sigsearch(VPD_START, VPD_SIG, VPD_LEN, VPD_STEP, VPD_OFF);
if (addr != 0) {
rid = 0;
length = ADDR2VPD(addr)->Length;
child = BUS_ADD_CHILD(parent, 5, "vpd", -1);
device_set_driver(child, driver);
bus_set_resource(child, SYS_RES_MEMORY, rid, addr, length);
device_set_desc(child, "Vital Product Data Area");
}
return;
}
static int
acpi_ec_probe(device_t dev)
{
ACPI_BUFFER buf;
ACPI_HANDLE h;
ACPI_OBJECT *obj;
ACPI_STATUS status;
device_t peer;
char desc[64];
int ecdt;
int ret;
struct acpi_ec_params *params;
static char *ec_ids[] = { "PNP0C09", NULL };
/* Check that this is a device and that EC is not disabled. */
if (acpi_get_type(dev) != ACPI_TYPE_DEVICE || acpi_disabled("ec"))
return (ENXIO);
/*
* If probed via ECDT, set description and continue. Otherwise,
* we can access the namespace and make sure this is not a
* duplicate probe.
*/
ret = ENXIO;
ecdt = 0;
buf.Pointer = NULL;
buf.Length = ACPI_ALLOCATE_BUFFER;
params = acpi_get_private(dev);
if (params != NULL) {
ecdt = 1;
ret = 0;
} else if (ACPI_ID_PROBE(device_get_parent(dev), dev, ec_ids)) {
params = kmalloc(sizeof(struct acpi_ec_params), M_TEMP,
M_WAITOK | M_ZERO);
h = acpi_get_handle(dev);
/*
* Read the unit ID to check for duplicate attach and the
* global lock value to see if we should acquire it when
* accessing the EC.
*/
status = acpi_GetInteger(h, "_UID", ¶ms->uid);
if (ACPI_FAILURE(status))
params->uid = 0;
status = acpi_GetInteger(h, "_GLK", ¶ms->glk);
if (ACPI_FAILURE(status))
params->glk = 0;
/*
* Evaluate the _GPE method to find the GPE bit used by the EC to
* signal status (SCI). If it's a package, it contains a reference
* and GPE bit, similar to _PRW.
*/
status = AcpiEvaluateObject(h, "_GPE", NULL, &buf);
if (ACPI_FAILURE(status)) {
device_printf(dev, "can't evaluate _GPE - %s\n",
AcpiFormatException(status));
goto out;
}
obj = (ACPI_OBJECT *)buf.Pointer;
if (obj == NULL)
goto out;
switch (obj->Type) {
case ACPI_TYPE_INTEGER:
params->gpe_handle = NULL;
params->gpe_bit = obj->Integer.Value;
break;
case ACPI_TYPE_PACKAGE:
if (!ACPI_PKG_VALID(obj, 2))
goto out;
params->gpe_handle =
acpi_GetReference(NULL, &obj->Package.Elements[0]);
if (params->gpe_handle == NULL ||
acpi_PkgInt32(obj, 1, ¶ms->gpe_bit) != 0)
goto out;
break;
default:
device_printf(dev, "_GPE has invalid type %d\n", obj->Type);
goto out;
}
/* Store the values we got from the namespace for attach. */
acpi_set_private(dev, params);
/*
* Check for a duplicate probe. This can happen when a probe
* via ECDT succeeded already. If this is a duplicate, disable
* this device.
*/
peer = devclass_get_device(acpi_ec_devclass, params->uid);
if (peer == NULL || !device_is_alive(peer))
ret = 0;
else
device_disable(dev);
}
out:
if (ret == 0) {
ksnprintf(desc, sizeof(desc), "Embedded Controller: GPE %#x%s%s",
params->gpe_bit, (params->glk) ? ", GLK" : "",
ecdt ? ", ECDT" : "");
device_set_desc_copy(dev, desc);
}
if (ret > 0 && params)
kfree(params, M_TEMP);
if (buf.Pointer)
AcpiOsFree(buf.Pointer);
return (ret);
}