Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 273 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c
new file mode 100644
index 000000000..6172cddc1
--- /dev/null
+++ b/drivers/acpi/acpica/evmisc.c
@@ -0,0 +1,273 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: evmisc - Miscellaneous event manager support functions
+ *
+ * Copyright (C) 2000 - 2022, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acevents.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_EVENTS
+ACPI_MODULE_NAME("evmisc")
+
+/* Local prototypes */
+static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context);
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_is_notify_object
+ *
+ * PARAMETERS:  node            - Node to check
+ *
+ * RETURN:      TRUE if notifies allowed on this object
+ *
+ * DESCRIPTION: Check type of node for a object that supports notifies.
+ *
+ *              TBD: This could be replaced by a flag bit in the node.
+ *
+ ******************************************************************************/
+
+u8 acpi_ev_is_notify_object(struct acpi_namespace_node *node)
+{
+
+	switch (node->type) {
+	case ACPI_TYPE_DEVICE:
+	case ACPI_TYPE_PROCESSOR:
+	case ACPI_TYPE_THERMAL:
+		/*
+		 * These are the ONLY objects that can receive ACPI notifications
+		 */
+		return (TRUE);
+
+	default:
+
+		return (FALSE);
+	}
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_queue_notify_request
+ *
+ * PARAMETERS:  node            - NS node for the notified object
+ *              notify_value    - Value from the Notify() request
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Dispatch a device notification event to a previously
+ *              installed handler.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_queue_notify_request(struct acpi_namespace_node *node, u32 notify_value)
+{
+	union acpi_operand_object *obj_desc;
+	union acpi_operand_object *handler_list_head = NULL;
+	union acpi_generic_state *info;
+	u8 handler_list_id = 0;
+	acpi_status status = AE_OK;
+
+	ACPI_FUNCTION_NAME(ev_queue_notify_request);
+
+	/* Are Notifies allowed on this object? */
+
+	if (!acpi_ev_is_notify_object(node)) {
+		return (AE_TYPE);
+	}
+
+	/* Get the correct notify list type (System or Device) */
+
+	if (notify_value <= ACPI_MAX_SYS_NOTIFY) {
+		handler_list_id = ACPI_SYSTEM_HANDLER_LIST;
+	} else {
+		handler_list_id = ACPI_DEVICE_HANDLER_LIST;
+	}
+
+	/* Get the notify object attached to the namespace Node */
+
+	obj_desc = acpi_ns_get_attached_object(node);
+	if (obj_desc) {
+
+		/* We have an attached object, Get the correct handler list */
+
+		handler_list_head =
+		    obj_desc->common_notify.notify_list[handler_list_id];
+	}
+
+	/*
+	 * If there is no notify handler (Global or Local)
+	 * for this object, just ignore the notify
+	 */
+	if (!acpi_gbl_global_notify[handler_list_id].handler
+	    && !handler_list_head) {
+		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+				  "No notify handler for Notify, ignoring (%4.4s, %X) node %p\n",
+				  acpi_ut_get_node_name(node), notify_value,
+				  node));
+
+		return (AE_OK);
+	}
+
+	/* Setup notify info and schedule the notify dispatcher */
+
+	info = acpi_ut_create_generic_state();
+	if (!info) {
+		return (AE_NO_MEMORY);
+	}
+
+	info->common.descriptor_type = ACPI_DESC_TYPE_STATE_NOTIFY;
+
+	info->notify.node = node;
+	info->notify.value = (u16)notify_value;
+	info->notify.handler_list_id = handler_list_id;
+	info->notify.handler_list_head = handler_list_head;
+	info->notify.global = &acpi_gbl_global_notify[handler_list_id];
+
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+			  "Dispatching Notify on [%4.4s] (%s) Value 0x%2.2X (%s) Node %p\n",
+			  acpi_ut_get_node_name(node),
+			  acpi_ut_get_type_name(node->type), notify_value,
+			  acpi_ut_get_notify_name(notify_value, ACPI_TYPE_ANY),
+			  node));
+
+	status = acpi_os_execute(OSL_NOTIFY_HANDLER,
+				 acpi_ev_notify_dispatch, info);
+	if (ACPI_FAILURE(status)) {
+		acpi_ut_delete_generic_state(info);
+	}
+
+	return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_notify_dispatch
+ *
+ * PARAMETERS:  context         - To be passed to the notify handler
+ *
+ * RETURN:      None.
+ *
+ * DESCRIPTION: Dispatch a device notification event to a previously
+ *              installed handler.
+ *
+ ******************************************************************************/
+
+static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context)
+{
+	union acpi_generic_state *info = (union acpi_generic_state *)context;
+	union acpi_operand_object *handler_obj;
+
+	ACPI_FUNCTION_ENTRY();
+
+	/* Invoke a global notify handler if installed */
+
+	if (info->notify.global->handler) {
+		info->notify.global->handler(info->notify.node,
+					     info->notify.value,
+					     info->notify.global->context);
+	}
+
+	/* Now invoke the local notify handler(s) if any are installed */
+
+	handler_obj = info->notify.handler_list_head;
+	while (handler_obj) {
+		handler_obj->notify.handler(info->notify.node,
+					    info->notify.value,
+					    handler_obj->notify.context);
+
+		handler_obj =
+		    handler_obj->notify.next[info->notify.handler_list_id];
+	}
+
+	/* All done with the info object */
+
+	acpi_ut_delete_generic_state(info);
+}
+
+#if (!ACPI_REDUCED_HARDWARE)
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_ev_terminate
+ *
+ * PARAMETERS:  none
+ *
+ * RETURN:      none
+ *
+ * DESCRIPTION: Disable events and free memory allocated for table storage.
+ *
+ ******************************************************************************/
+
+void acpi_ev_terminate(void)
+{
+	u32 i;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(ev_terminate);
+
+	if (acpi_gbl_events_initialized) {
+		/*
+		 * Disable all event-related functionality. In all cases, on error,
+		 * print a message but obviously we don't abort.
+		 */
+
+		/* Disable all fixed events */
+
+		for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
+			status = acpi_disable_event(i, 0);
+			if (ACPI_FAILURE(status)) {
+				ACPI_ERROR((AE_INFO,
+					    "Could not disable fixed event %u",
+					    (u32) i));
+			}
+		}
+
+		/* Disable all GPEs in all GPE blocks */
+
+		status = acpi_ev_walk_gpe_list(acpi_hw_disable_gpe_block, NULL);
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status,
+					"Could not disable GPEs in GPE block"));
+		}
+
+		status = acpi_ev_remove_global_lock_handler();
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status,
+					"Could not remove Global Lock handler"));
+		}
+
+		acpi_gbl_events_initialized = FALSE;
+	}
+
+	/* Remove SCI handlers */
+
+	status = acpi_ev_remove_all_sci_handlers();
+	if (ACPI_FAILURE(status)) {
+		ACPI_ERROR((AE_INFO, "Could not remove SCI handler"));
+	}
+
+	/* Deallocate all handler objects installed within GPE info structs */
+
+	status = acpi_ev_walk_gpe_list(acpi_ev_delete_gpe_handlers, NULL);
+	if (ACPI_FAILURE(status)) {
+		ACPI_EXCEPTION((AE_INFO, status,
+				"Could not delete GPE handlers"));
+	}
+
+	/* Return to original mode if necessary */
+
+	if (acpi_gbl_original_mode == ACPI_SYS_MODE_LEGACY) {
+		status = acpi_disable();
+		if (ACPI_FAILURE(status)) {
+			ACPI_WARNING((AE_INFO, "AcpiDisable failed"));
+		}
+	}
+	return_VOID;
+}
+
+#endif				/* !ACPI_REDUCED_HARDWARE */