status_t
get_next_entry(uint32 objectType, const char *base, char *result,
size_t length, void **counter)
{
ACPI_HANDLE parent, child, newChild;
ACPI_BUFFER buffer;
ACPI_STATUS status;
TRACE("get_next_entry %ld, %s\n", objectType, base);
if (base == NULL || !strcmp(base, "\\")) {
parent = ACPI_ROOT_OBJECT;
} else {
status = AcpiGetHandle(NULL, (ACPI_STRING)base, &parent);
if (status != AE_OK)
return B_ENTRY_NOT_FOUND;
}
child = *counter;
status = AcpiGetNextObject(objectType, parent, child, &newChild);
if (status != AE_OK)
return B_ENTRY_NOT_FOUND;
*counter = newChild;
buffer.Length = length;
buffer.Pointer = result;
status = AcpiGetName(newChild, ACPI_FULL_PATHNAME, &buffer);
if (status != AE_OK)
return B_NO_MEMORY; /* Corresponds to AE_BUFFER_OVERFLOW */
return B_OK;
}
status_t
get_next_object(uint32 objectType, acpi_handle parent,
acpi_handle* currentChild)
{
acpi_handle child = *currentChild;
return AcpiGetNextObject(objectType, parent, child, currentChild) == AE_OK
? B_OK : B_ERROR;
}
/*
* Intialize hot plug control for ACPI mode.
*/
static int
pciehpc_acpi_hpc_init(pcie_hp_ctrl_t *ctrl_p)
{
ACPI_HANDLE pcibus_obj;
int status = AE_ERROR;
ACPI_HANDLE slot_dev_obj;
ACPI_HANDLE hdl;
pciehpc_acpi_t *acpi_p;
uint16_t bus_methods = 0;
uint16_t slot_methods = 0;
/* get the ACPI object for the bus node */
status = acpica_get_handle(ctrl_p->hc_dip, &pcibus_obj);
if (status != AE_OK)
return (DDI_FAILURE);
/* get the ACPI object handle for the child node */
status = AcpiGetNextObject(ACPI_TYPE_DEVICE, pcibus_obj,
NULL, &slot_dev_obj);
if (status != AE_OK)
return (DDI_FAILURE);
/*
* gather the info about the ACPI methods present on the bus node
* and the child nodes.
*/
if (AcpiGetHandle(pcibus_obj, "_OSC", &hdl) == AE_OK)
bus_methods |= PCIEHPC_ACPI_OSC_PRESENT;
if (AcpiGetHandle(pcibus_obj, "_OSHP", &hdl) == AE_OK)
bus_methods |= PCIEHPC_ACPI_OSHP_PRESENT;
if (AcpiGetHandle(pcibus_obj, "_HPX", &hdl) == AE_OK)
bus_methods |= PCIEHPC_ACPI_HPX_PRESENT;
if (AcpiGetHandle(pcibus_obj, "_HPP", &hdl) == AE_OK)
bus_methods |= PCIEHPC_ACPI_HPP_PRESENT;
if (AcpiGetHandle(pcibus_obj, "_DSM", &hdl) == AE_OK)
bus_methods |= PCIEHPC_ACPI_DSM_PRESENT;
if (AcpiGetHandle(slot_dev_obj, "_SUN", &hdl) == AE_OK)
slot_methods |= PCIEHPC_ACPI_SUN_PRESENT;
if (AcpiGetHandle(slot_dev_obj, "_PS0", &hdl) == AE_OK)
slot_methods |= PCIEHPC_ACPI_PS0_PRESENT;
if (AcpiGetHandle(slot_dev_obj, "_EJ0", &hdl) == AE_OK)
slot_methods |= PCIEHPC_ACPI_EJ0_PRESENT;
if (AcpiGetHandle(slot_dev_obj, "_STA", &hdl) == AE_OK)
slot_methods |= PCIEHPC_ACPI_STA_PRESENT;
/* save ACPI object handles, etc. */
acpi_p = kmem_zalloc(sizeof (pciehpc_acpi_t), KM_SLEEP);
acpi_p->bus_obj = pcibus_obj;
acpi_p->slot_dev_obj = slot_dev_obj;
acpi_p->bus_methods = bus_methods;
acpi_p->slot_methods = slot_methods;
ctrl_p->hc_misc_data = acpi_p;
return (DDI_SUCCESS);
}
bool hasChild(ACPI_HANDLE parent, const char *path) {
ACPI_HANDLE child = nullptr;
while(true) {
ACPI_STATUS status = AcpiGetNextObject(ACPI_TYPE_ANY, parent, child, &child);
if(status == AE_NOT_FOUND)
return false;
ACPICA_CHECK(status);
acpi::ScopedBuffer buffer;
ACPICA_CHECK(AcpiGetName(child, ACPI_SINGLE_NAME, buffer.get()));
if(!strcmp(static_cast<char *>(buffer.data()), path))
return true;
}
}
static ACPI_STATUS
AcpiNsDeleteSubtree (
ACPI_HANDLE StartHandle)
{
ACPI_STATUS Status;
ACPI_HANDLE ChildHandle;
ACPI_HANDLE ParentHandle;
ACPI_HANDLE NextChildHandle;
ACPI_HANDLE Dummy;
UINT32 Level;
ACPI_FUNCTION_TRACE (NsDeleteSubtree);
ParentHandle = StartHandle;
ChildHandle = NULL;
Level = 1;
/*
* Traverse the tree of objects until we bubble back up
* to where we started.
*/
while (Level > 0)
{
/* Attempt to get the next object in this scope */
Status = AcpiGetNextObject (ACPI_TYPE_ANY, ParentHandle,
ChildHandle, &NextChildHandle);
ChildHandle = NextChildHandle;
/* Did we get a new object? */
if (ACPI_SUCCESS (Status))
{
/* Check if this object has any children */
if (ACPI_SUCCESS (AcpiGetNextObject (ACPI_TYPE_ANY, ChildHandle,
NULL, &Dummy)))
{
/*
* There is at least one child of this object,
* visit the object
*/
Level++;
ParentHandle = ChildHandle;
ChildHandle = NULL;
}
}
else
{
/*
* No more children in this object, go back up to
* the object's parent
*/
Level--;
/* Delete all children now */
AcpiNsDeleteChildren (ChildHandle);
ChildHandle = ParentHandle;
Status = AcpiGetParent (ParentHandle, &ParentHandle);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
}
}
/* Now delete the starting object, and we are done */
AcpiNsDeleteNode (ChildHandle);
return_ACPI_STATUS (AE_OK);
}
/*
* Install/uninstall ACPI system event handler for child objects of hdl.
* Return DDI_SUCCESS on success, and DDI_FAILURE on failure.
*/
static int
acpinex_event_walk(boolean_t init, acpinex_softstate_t *sp, ACPI_HANDLE hdl)
{
int rc;
int retval = DDI_SUCCESS;
dev_info_t *dip;
ACPI_HANDLE child = NULL;
ACPI_OBJECT_TYPE type;
ACPI_DEVICE_INFO *infop;
acpidev_data_handle_t dhdl;
/* Walk all child objects. */
ASSERT(hdl != NULL);
while (ACPI_SUCCESS(AcpiGetNextObject(ACPI_TYPE_ANY, hdl, child,
&child))) {
/* Skip unwanted object types. */
if (ACPI_FAILURE(AcpiGetType(child, &type)) ||
type > ACPI_TYPE_NS_NODE_MAX ||
BT_TEST(acpinex_object_type_mask, type) == 0) {
continue;
}
/* Get data associated with the object. Skip it if fails. */
dhdl = acpidev_data_get_handle(child);
if (dhdl == NULL) {
ACPINEX_DEBUG(CE_NOTE, "!acpinex: failed to get data "
"associated with %p, skip.", child);
continue;
}
/* Query ACPI object info for the object. */
if (ACPI_FAILURE(AcpiGetObjectInfo(child, &infop))) {
cmn_err(CE_WARN,
"!acpidnex: failed to get object info for %p.",
child);
continue;
}
if (init) {
rc = acpinex_event_install_handler(child, sp, infop,
dhdl);
if (rc != DDI_SUCCESS) {
ACPINEX_DEBUG(CE_WARN, "!acpinex: failed to "
"install handler for child %p of %s.",
child, sp->ans_path);
retval = DDI_FAILURE;
/*
* Try to handle descendants if both of the
* following two conditions are true:
* 1) Device corresponding to the current object is
* enabled. If the device is absent/disabled,
* no notification should be generated from
* descendant objects of it.
* 2) No Solaris device node has been created for the
* current object yet. If the device node has been
* created for the current object, notification
* events from child objects should be handled by
* the corresponding driver.
*/
} else if (acpidev_check_device_enabled(
acpidev_data_get_status(dhdl)) &&
ACPI_FAILURE(acpica_get_devinfo(child, &dip))) {
rc = acpinex_event_walk(B_TRUE, sp, child);
if (rc != DDI_SUCCESS) {
ACPINEX_DEBUG(CE_WARN,
"!acpinex: failed to install "
"handler for descendants of %s.",
sp->ans_path);
retval = DDI_FAILURE;
}
}
} else {
rc = DDI_SUCCESS;
/* Uninstall handler for descendants if needed. */
if (ACPI_FAILURE(acpica_get_devinfo(child, &dip))) {
rc = acpinex_event_walk(B_FALSE, sp, child);
}
if (rc == DDI_SUCCESS) {
rc = acpinex_event_uninstall_handler(child,
infop, dhdl);
}
/* Undo will be done by caller in case of failure. */
if (rc != DDI_SUCCESS) {
ACPINEX_DEBUG(CE_WARN, "!acpinex: failed to "
"uninstall handler for descendants of %s.",
sp->ans_path);
AcpiOsFree(infop);
retval = DDI_FAILURE;
break;
}
}
/* Release cached resources. */
AcpiOsFree(infop);
}
return (retval);
}
