v4.19.13 snapshot.
diff --git a/drivers/acpi/acpica/dbmethod.c b/drivers/acpi/acpica/dbmethod.c
new file mode 100644
index 0000000..d8b7a0f
--- /dev/null
+++ b/drivers/acpi/acpica/dbmethod.c
@@ -0,0 +1,464 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/*******************************************************************************
+ *
+ * Module Name: dbmethod - Debug commands for control methods
+ *
+ ******************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acdispat.h"
+#include "acnamesp.h"
+#include "acdebug.h"
+#include "acparser.h"
+#include "acpredef.h"
+
+#define _COMPONENT ACPI_CA_DEBUGGER
+ACPI_MODULE_NAME("dbmethod")
+
+/* Local prototypes */
+static acpi_status
+acpi_db_walk_for_execute(acpi_handle obj_handle,
+ u32 nesting_level, void *context, void **return_value);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_db_set_method_breakpoint
+ *
+ * PARAMETERS: location - AML offset of breakpoint
+ * walk_state - Current walk info
+ * op - Current Op (from parse walk)
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Set a breakpoint in a control method at the specified
+ * AML offset
+ *
+ ******************************************************************************/
+
+void
+acpi_db_set_method_breakpoint(char *location,
+ struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ u32 address;
+ u32 aml_offset;
+
+ if (!op) {
+ acpi_os_printf("There is no method currently executing\n");
+ return;
+ }
+
+ /* Get and verify the breakpoint address */
+
+ address = strtoul(location, NULL, 16);
+ aml_offset = (u32)ACPI_PTR_DIFF(op->common.aml,
+ walk_state->parser_state.aml_start);
+ if (address <= aml_offset) {
+ acpi_os_printf("Breakpoint %X is beyond current address %X\n",
+ address, aml_offset);
+ }
+
+ /* Save breakpoint in current walk */
+
+ walk_state->user_breakpoint = address;
+ acpi_os_printf("Breakpoint set at AML offset %X\n", address);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_db_set_method_call_breakpoint
+ *
+ * PARAMETERS: op - Current Op (from parse walk)
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Set a breakpoint in a control method at the specified
+ * AML offset
+ *
+ ******************************************************************************/
+
+void acpi_db_set_method_call_breakpoint(union acpi_parse_object *op)
+{
+
+ if (!op) {
+ acpi_os_printf("There is no method currently executing\n");
+ return;
+ }
+
+ acpi_gbl_step_to_next_call = TRUE;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_db_set_method_data
+ *
+ * PARAMETERS: type_arg - L for local, A for argument
+ * index_arg - which one
+ * value_arg - Value to set.
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Set a local or argument for the running control method.
+ * NOTE: only object supported is Number.
+ *
+ ******************************************************************************/
+
+void acpi_db_set_method_data(char *type_arg, char *index_arg, char *value_arg)
+{
+ char type;
+ u32 index;
+ u32 value;
+ struct acpi_walk_state *walk_state;
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+ struct acpi_namespace_node *node;
+
+ /* Validate type_arg */
+
+ acpi_ut_strupr(type_arg);
+ type = type_arg[0];
+ if ((type != 'L') && (type != 'A') && (type != 'N')) {
+ acpi_os_printf("Invalid SET operand: %s\n", type_arg);
+ return;
+ }
+
+ value = strtoul(value_arg, NULL, 16);
+
+ if (type == 'N') {
+ node = acpi_db_convert_to_node(index_arg);
+ if (!node) {
+ return;
+ }
+
+ if (node->type != ACPI_TYPE_INTEGER) {
+ acpi_os_printf("Can only set Integer nodes\n");
+ return;
+ }
+ obj_desc = node->object;
+ obj_desc->integer.value = value;
+ return;
+ }
+
+ /* Get the index and value */
+
+ index = strtoul(index_arg, NULL, 16);
+
+ walk_state = acpi_ds_get_current_walk_state(acpi_gbl_current_walk_list);
+ if (!walk_state) {
+ acpi_os_printf("There is no method currently executing\n");
+ return;
+ }
+
+ /* Create and initialize the new object */
+
+ obj_desc = acpi_ut_create_integer_object((u64)value);
+ if (!obj_desc) {
+ acpi_os_printf("Could not create an internal object\n");
+ return;
+ }
+
+ /* Store the new object into the target */
+
+ switch (type) {
+ case 'A':
+
+ /* Set a method argument */
+
+ if (index > ACPI_METHOD_MAX_ARG) {
+ acpi_os_printf("Arg%u - Invalid argument name\n",
+ index);
+ goto cleanup;
+ }
+
+ status = acpi_ds_store_object_to_local(ACPI_REFCLASS_ARG,
+ index, obj_desc,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+
+ obj_desc = walk_state->arguments[index].object;
+
+ acpi_os_printf("Arg%u: ", index);
+ acpi_db_display_internal_object(obj_desc, walk_state);
+ break;
+
+ case 'L':
+
+ /* Set a method local */
+
+ if (index > ACPI_METHOD_MAX_LOCAL) {
+ acpi_os_printf
+ ("Local%u - Invalid local variable name\n", index);
+ goto cleanup;
+ }
+
+ status = acpi_ds_store_object_to_local(ACPI_REFCLASS_LOCAL,
+ index, obj_desc,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+
+ obj_desc = walk_state->local_variables[index].object;
+
+ acpi_os_printf("Local%u: ", index);
+ acpi_db_display_internal_object(obj_desc, walk_state);
+ break;
+
+ default:
+
+ break;
+ }
+
+cleanup:
+ acpi_ut_remove_reference(obj_desc);
+}
+
+#ifdef ACPI_DISASSEMBLER
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_db_disassemble_aml
+ *
+ * PARAMETERS: statements - Number of statements to disassemble
+ * op - Current Op (from parse walk)
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
+ * of statements specified.
+ *
+ ******************************************************************************/
+
+void acpi_db_disassemble_aml(char *statements, union acpi_parse_object *op)
+{
+ u32 num_statements = 8;
+
+ if (!op) {
+ acpi_os_printf("There is no method currently executing\n");
+ return;
+ }
+
+ if (statements) {
+ num_statements = strtoul(statements, NULL, 0);
+ }
+
+ acpi_dm_disassemble(NULL, op, num_statements);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_db_disassemble_method
+ *
+ * PARAMETERS: name - Name of control method
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Display disassembled AML (ASL) starting from Op for the number
+ * of statements specified.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_db_disassemble_method(char *name)
+{
+ acpi_status status;
+ union acpi_parse_object *op;
+ struct acpi_walk_state *walk_state;
+ union acpi_operand_object *obj_desc;
+ struct acpi_namespace_node *method;
+
+ method = acpi_db_convert_to_node(name);
+ if (!method) {
+ return (AE_BAD_PARAMETER);
+ }
+
+ if (method->type != ACPI_TYPE_METHOD) {
+ ACPI_ERROR((AE_INFO, "%s (%s): Object must be a control method",
+ name, acpi_ut_get_type_name(method->type)));
+ return (AE_BAD_PARAMETER);
+ }
+
+ obj_desc = method->object;
+
+ op = acpi_ps_create_scope_op(obj_desc->method.aml_start);
+ if (!op) {
+ return (AE_NO_MEMORY);
+ }
+
+ /* Create and initialize a new walk state */
+
+ walk_state = acpi_ds_create_walk_state(0, op, NULL, NULL);
+ if (!walk_state) {
+ return (AE_NO_MEMORY);
+ }
+
+ status = acpi_ds_init_aml_walk(walk_state, op, NULL,
+ obj_desc->method.aml_start,
+ obj_desc->method.aml_length, NULL,
+ ACPI_IMODE_LOAD_PASS1);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
+ walk_state->owner_id = obj_desc->method.owner_id;
+
+ /* Push start scope on scope stack and make it current */
+
+ status = acpi_ds_scope_stack_push(method, method->type, walk_state);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ /* Parse the entire method AML including deferred operators */
+
+ walk_state->parse_flags &= ~ACPI_PARSE_DELETE_TREE;
+ walk_state->parse_flags |= ACPI_PARSE_DISASSEMBLE;
+
+ status = acpi_ps_parse_aml(walk_state);
+ (void)acpi_dm_parse_deferred_ops(op);
+
+ /* Now we can disassemble the method */
+
+ acpi_gbl_dm_opt_verbose = FALSE;
+ acpi_dm_disassemble(NULL, op, 0);
+ acpi_gbl_dm_opt_verbose = TRUE;
+
+ acpi_ps_delete_parse_tree(op);
+
+ /* Method cleanup */
+
+ acpi_ns_delete_namespace_subtree(method);
+ acpi_ns_delete_namespace_by_owner(obj_desc->method.owner_id);
+ acpi_ut_release_owner_id(&obj_desc->method.owner_id);
+ return (AE_OK);
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_db_walk_for_execute
+ *
+ * PARAMETERS: Callback from walk_namespace
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Batch execution module. Currently only executes predefined
+ * ACPI names.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_db_walk_for_execute(acpi_handle obj_handle,
+ u32 nesting_level, void *context, void **return_value)
+{
+ struct acpi_namespace_node *node =
+ (struct acpi_namespace_node *)obj_handle;
+ struct acpi_db_execute_walk *info =
+ (struct acpi_db_execute_walk *)context;
+ struct acpi_buffer return_obj;
+ acpi_status status;
+ char *pathname;
+ u32 i;
+ struct acpi_device_info *obj_info;
+ struct acpi_object_list param_objects;
+ union acpi_object params[ACPI_METHOD_NUM_ARGS];
+ const union acpi_predefined_info *predefined;
+
+ predefined = acpi_ut_match_predefined_method(node->name.ascii);
+ if (!predefined) {
+ return (AE_OK);
+ }
+
+ if (node->type == ACPI_TYPE_LOCAL_SCOPE) {
+ return (AE_OK);
+ }
+
+ pathname = acpi_ns_get_external_pathname(node);
+ if (!pathname) {
+ return (AE_OK);
+ }
+
+ /* Get the object info for number of method parameters */
+
+ status = acpi_get_object_info(obj_handle, &obj_info);
+ if (ACPI_FAILURE(status)) {
+ ACPI_FREE(pathname);
+ return (status);
+ }
+
+ param_objects.pointer = NULL;
+ param_objects.count = 0;
+
+ if (obj_info->type == ACPI_TYPE_METHOD) {
+
+ /* Setup default parameters */
+
+ for (i = 0; i < obj_info->param_count; i++) {
+ params[i].type = ACPI_TYPE_INTEGER;
+ params[i].integer.value = 1;
+ }
+
+ param_objects.pointer = params;
+ param_objects.count = obj_info->param_count;
+ }
+
+ ACPI_FREE(obj_info);
+ return_obj.pointer = NULL;
+ return_obj.length = ACPI_ALLOCATE_BUFFER;
+
+ /* Do the actual method execution */
+
+ acpi_gbl_method_executing = TRUE;
+
+ status = acpi_evaluate_object(node, NULL, ¶m_objects, &return_obj);
+
+ acpi_os_printf("%-32s returned %s\n", pathname,
+ acpi_format_exception(status));
+ acpi_gbl_method_executing = FALSE;
+ ACPI_FREE(pathname);
+
+ /* Ignore status from method execution */
+
+ status = AE_OK;
+
+ /* Update count, check if we have executed enough methods */
+
+ info->count++;
+ if (info->count >= info->max_count) {
+ status = AE_CTRL_TERMINATE;
+ }
+
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_db_evaluate_predefined_names
+ *
+ * PARAMETERS: None
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Namespace batch execution. Execute predefined names in the
+ * namespace, up to the max count, if specified.
+ *
+ ******************************************************************************/
+
+void acpi_db_evaluate_predefined_names(void)
+{
+ struct acpi_db_execute_walk info;
+
+ info.count = 0;
+ info.max_count = ACPI_UINT32_MAX;
+
+ /* Search all nodes in namespace */
+
+ (void)acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT,
+ ACPI_UINT32_MAX, acpi_db_walk_for_execute,
+ NULL, (void *)&info, NULL);
+
+ acpi_os_printf("Evaluated %u predefined names in the namespace\n",
+ info.count);
+}