#define _COMPONENT ACPI_PARSER
ACPI_MODULE_NAME("psloop")
-static u32 acpi_gbl_depth = 0;
-
/* Local prototypes */
-
-static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state);
-
-static acpi_status
-acpi_ps_build_named_op(struct acpi_walk_state *walk_state,
- u8 * aml_op_start,
- union acpi_parse_object *unnamed_op,
- union acpi_parse_object **op);
-
-static acpi_status
-acpi_ps_create_op(struct acpi_walk_state *walk_state,
- u8 * aml_op_start, union acpi_parse_object **new_op);
-
static acpi_status
acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
u8 * aml_op_start, union acpi_parse_object *op);
-static acpi_status
-acpi_ps_complete_op(struct acpi_walk_state *walk_state,
- union acpi_parse_object **op, acpi_status status);
-
-static acpi_status
-acpi_ps_complete_final_op(struct acpi_walk_state *walk_state,
- union acpi_parse_object *op, acpi_status status);
-
static void
acpi_ps_link_module_code(union acpi_parse_object *parent_op,
u8 *aml_start, u32 aml_length, acpi_owner_id owner_id);
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_get_aml_opcode
- *
- * PARAMETERS: walk_state - Current state
- *
- * RETURN: Status
- *
- * DESCRIPTION: Extract the next AML opcode from the input stream.
- *
- ******************************************************************************/
-
-static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
-{
-
- ACPI_FUNCTION_TRACE_PTR(ps_get_aml_opcode, walk_state);
-
- walk_state->aml_offset =
- (u32) ACPI_PTR_DIFF(walk_state->parser_state.aml,
- walk_state->parser_state.aml_start);
- walk_state->opcode = acpi_ps_peek_opcode(&(walk_state->parser_state));
-
- /*
- * First cut to determine what we have found:
- * 1) A valid AML opcode
- * 2) A name string
- * 3) An unknown/invalid opcode
- */
- walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
-
- switch (walk_state->op_info->class) {
- case AML_CLASS_ASCII:
- case AML_CLASS_PREFIX:
- /*
- * Starts with a valid prefix or ASCII char, this is a name
- * string. Convert the bare name string to a namepath.
- */
- walk_state->opcode = AML_INT_NAMEPATH_OP;
- walk_state->arg_types = ARGP_NAMESTRING;
- break;
-
- case AML_CLASS_UNKNOWN:
-
- /* The opcode is unrecognized. Complain and skip unknown opcodes */
-
- if (walk_state->pass_number == 2) {
- ACPI_ERROR((AE_INFO,
- "Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring",
- walk_state->opcode,
- (u32)(walk_state->aml_offset +
- sizeof(struct acpi_table_header))));
-
- ACPI_DUMP_BUFFER((walk_state->parser_state.aml - 16),
- 48);
-
-#ifdef ACPI_ASL_COMPILER
- /*
- * This is executed for the disassembler only. Output goes
- * to the disassembled ASL output file.
- */
- acpi_os_printf
- ("/*\nError: Unknown opcode 0x%.2X at table offset 0x%.4X, context:\n",
- walk_state->opcode,
- (u32)(walk_state->aml_offset +
- sizeof(struct acpi_table_header)));
-
- /* Dump the context surrounding the invalid opcode */
-
- acpi_ut_dump_buffer(((u8 *)walk_state->parser_state.
- aml - 16), 48, DB_BYTE_DISPLAY,
- (walk_state->aml_offset +
- sizeof(struct acpi_table_header) -
- 16));
- acpi_os_printf(" */\n");
-#endif
- }
-
- /* Increment past one-byte or two-byte opcode */
-
- walk_state->parser_state.aml++;
- if (walk_state->opcode > 0xFF) { /* Can only happen if first byte is 0x5B */
- walk_state->parser_state.aml++;
- }
-
- return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
-
- default:
-
- /* Found opcode info, this is a normal opcode */
-
- walk_state->parser_state.aml +=
- acpi_ps_get_opcode_size(walk_state->opcode);
- walk_state->arg_types = walk_state->op_info->parse_args;
- break;
- }
-
- return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_build_named_op
- *
- * PARAMETERS: walk_state - Current state
- * aml_op_start - Begin of named Op in AML
- * unnamed_op - Early Op (not a named Op)
- * op - Returned Op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Parse a named Op
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ps_build_named_op(struct acpi_walk_state *walk_state,
- u8 * aml_op_start,
- union acpi_parse_object *unnamed_op,
- union acpi_parse_object **op)
-{
- acpi_status status = AE_OK;
- union acpi_parse_object *arg = NULL;
-
- ACPI_FUNCTION_TRACE_PTR(ps_build_named_op, walk_state);
-
- unnamed_op->common.value.arg = NULL;
- unnamed_op->common.arg_list_length = 0;
- unnamed_op->common.aml_opcode = walk_state->opcode;
-
- /*
- * Get and append arguments until we find the node that contains
- * the name (the type ARGP_NAME).
- */
- while (GET_CURRENT_ARG_TYPE(walk_state->arg_types) &&
- (GET_CURRENT_ARG_TYPE(walk_state->arg_types) != ARGP_NAME)) {
- status =
- acpi_ps_get_next_arg(walk_state,
- &(walk_state->parser_state),
- GET_CURRENT_ARG_TYPE(walk_state->
- arg_types), &arg);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- acpi_ps_append_arg(unnamed_op, arg);
- INCREMENT_ARG_LIST(walk_state->arg_types);
- }
-
- /*
- * Make sure that we found a NAME and didn't run out of arguments
- */
- if (!GET_CURRENT_ARG_TYPE(walk_state->arg_types)) {
- return_ACPI_STATUS(AE_AML_NO_OPERAND);
- }
-
- /* We know that this arg is a name, move to next arg */
-
- INCREMENT_ARG_LIST(walk_state->arg_types);
-
- /*
- * Find the object. This will either insert the object into
- * the namespace or simply look it up
- */
- walk_state->op = NULL;
-
- status = walk_state->descending_callback(walk_state, op);
- if (ACPI_FAILURE(status)) {
- ACPI_EXCEPTION((AE_INFO, status, "During name lookup/catalog"));
- return_ACPI_STATUS(status);
- }
-
- if (!*op) {
- return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
- }
-
- status = acpi_ps_next_parse_state(walk_state, *op, status);
- if (ACPI_FAILURE(status)) {
- if (status == AE_CTRL_PENDING) {
- return_ACPI_STATUS(AE_CTRL_PARSE_PENDING);
- }
- return_ACPI_STATUS(status);
- }
-
- acpi_ps_append_arg(*op, unnamed_op->common.value.arg);
- acpi_gbl_depth++;
-
- if ((*op)->common.aml_opcode == AML_REGION_OP ||
- (*op)->common.aml_opcode == AML_DATA_REGION_OP) {
- /*
- * Defer final parsing of an operation_region body, because we don't
- * have enough info in the first pass to parse it correctly (i.e.,
- * there may be method calls within the term_arg elements of the body.)
- *
- * However, we must continue parsing because the opregion is not a
- * standalone package -- we don't know where the end is at this point.
- *
- * (Length is unknown until parse of the body complete)
- */
- (*op)->named.data = aml_op_start;
- (*op)->named.length = 0;
- }
-
- return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_create_op
- *
- * PARAMETERS: walk_state - Current state
- * aml_op_start - Op start in AML
- * new_op - Returned Op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Get Op from AML
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ps_create_op(struct acpi_walk_state *walk_state,
- u8 * aml_op_start, union acpi_parse_object **new_op)
-{
- acpi_status status = AE_OK;
- union acpi_parse_object *op;
- union acpi_parse_object *named_op = NULL;
- union acpi_parse_object *parent_scope;
- u8 argument_count;
- const struct acpi_opcode_info *op_info;
-
- ACPI_FUNCTION_TRACE_PTR(ps_create_op, walk_state);
-
- status = acpi_ps_get_aml_opcode(walk_state);
- if (status == AE_CTRL_PARSE_CONTINUE) {
- return_ACPI_STATUS(AE_CTRL_PARSE_CONTINUE);
- }
-
- /* Create Op structure and append to parent's argument list */
-
- walk_state->op_info = acpi_ps_get_opcode_info(walk_state->opcode);
- op = acpi_ps_alloc_op(walk_state->opcode);
- if (!op) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- if (walk_state->op_info->flags & AML_NAMED) {
- status =
- acpi_ps_build_named_op(walk_state, aml_op_start, op,
- &named_op);
- acpi_ps_free_op(op);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- *new_op = named_op;
- return_ACPI_STATUS(AE_OK);
- }
-
- /* Not a named opcode, just allocate Op and append to parent */
-
- if (walk_state->op_info->flags & AML_CREATE) {
- /*
- * Backup to beginning of create_XXXfield declaration
- * body_length is unknown until we parse the body
- */
- op->named.data = aml_op_start;
- op->named.length = 0;
- }
-
- if (walk_state->opcode == AML_BANK_FIELD_OP) {
- /*
- * Backup to beginning of bank_field declaration
- * body_length is unknown until we parse the body
- */
- op->named.data = aml_op_start;
- op->named.length = 0;
- }
-
- parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
- acpi_ps_append_arg(parent_scope, op);
-
- if (parent_scope) {
- op_info =
- acpi_ps_get_opcode_info(parent_scope->common.aml_opcode);
- if (op_info->flags & AML_HAS_TARGET) {
- argument_count =
- acpi_ps_get_argument_count(op_info->type);
- if (parent_scope->common.arg_list_length >
- argument_count) {
- op->common.flags |= ACPI_PARSEOP_TARGET;
- }
- } else if (parent_scope->common.aml_opcode == AML_INCREMENT_OP) {
- op->common.flags |= ACPI_PARSEOP_TARGET;
- }
- }
-
- if (walk_state->descending_callback != NULL) {
- /*
- * Find the object. This will either insert the object into
- * the namespace or simply look it up
- */
- walk_state->op = *new_op = op;
-
- status = walk_state->descending_callback(walk_state, &op);
- status = acpi_ps_next_parse_state(walk_state, op, status);
- if (status == AE_CTRL_PENDING) {
- status = AE_CTRL_PARSE_PENDING;
- }
- }
-
- return_ACPI_STATUS(status);
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_ps_get_arguments
}
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_complete_op
- *
- * PARAMETERS: walk_state - Current state
- * op - Returned Op
- * status - Parse status before complete Op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Complete Op
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ps_complete_op(struct acpi_walk_state *walk_state,
- union acpi_parse_object **op, acpi_status status)
-{
- acpi_status status2;
-
- ACPI_FUNCTION_TRACE_PTR(ps_complete_op, walk_state);
-
- /*
- * Finished one argument of the containing scope
- */
- walk_state->parser_state.scope->parse_scope.arg_count--;
-
- /* Close this Op (will result in parse subtree deletion) */
-
- status2 = acpi_ps_complete_this_op(walk_state, *op);
- if (ACPI_FAILURE(status2)) {
- return_ACPI_STATUS(status2);
- }
-
- *op = NULL;
-
- switch (status) {
- case AE_OK:
- break;
-
- case AE_CTRL_TRANSFER:
-
- /* We are about to transfer to a called method */
-
- walk_state->prev_op = NULL;
- walk_state->prev_arg_types = walk_state->arg_types;
- return_ACPI_STATUS(status);
-
- case AE_CTRL_END:
-
- acpi_ps_pop_scope(&(walk_state->parser_state), op,
- &walk_state->arg_types,
- &walk_state->arg_count);
-
- if (*op) {
- walk_state->op = *op;
- walk_state->op_info =
- acpi_ps_get_opcode_info((*op)->common.aml_opcode);
- walk_state->opcode = (*op)->common.aml_opcode;
-
- status = walk_state->ascending_callback(walk_state);
- status =
- acpi_ps_next_parse_state(walk_state, *op, status);
-
- status2 = acpi_ps_complete_this_op(walk_state, *op);
- if (ACPI_FAILURE(status2)) {
- return_ACPI_STATUS(status2);
- }
- }
-
- status = AE_OK;
- break;
-
- case AE_CTRL_BREAK:
- case AE_CTRL_CONTINUE:
-
- /* Pop off scopes until we find the While */
-
- while (!(*op) || ((*op)->common.aml_opcode != AML_WHILE_OP)) {
- acpi_ps_pop_scope(&(walk_state->parser_state), op,
- &walk_state->arg_types,
- &walk_state->arg_count);
- }
-
- /* Close this iteration of the While loop */
-
- walk_state->op = *op;
- walk_state->op_info =
- acpi_ps_get_opcode_info((*op)->common.aml_opcode);
- walk_state->opcode = (*op)->common.aml_opcode;
-
- status = walk_state->ascending_callback(walk_state);
- status = acpi_ps_next_parse_state(walk_state, *op, status);
-
- status2 = acpi_ps_complete_this_op(walk_state, *op);
- if (ACPI_FAILURE(status2)) {
- return_ACPI_STATUS(status2);
- }
-
- status = AE_OK;
- break;
-
- case AE_CTRL_TERMINATE:
-
- /* Clean up */
- do {
- if (*op) {
- status2 =
- acpi_ps_complete_this_op(walk_state, *op);
- if (ACPI_FAILURE(status2)) {
- return_ACPI_STATUS(status2);
- }
-
- acpi_ut_delete_generic_state
- (acpi_ut_pop_generic_state
- (&walk_state->control_state));
- }
-
- acpi_ps_pop_scope(&(walk_state->parser_state), op,
- &walk_state->arg_types,
- &walk_state->arg_count);
-
- } while (*op);
-
- return_ACPI_STATUS(AE_OK);
-
- default: /* All other non-AE_OK status */
-
- do {
- if (*op) {
- status2 =
- acpi_ps_complete_this_op(walk_state, *op);
- if (ACPI_FAILURE(status2)) {
- return_ACPI_STATUS(status2);
- }
- }
-
- acpi_ps_pop_scope(&(walk_state->parser_state), op,
- &walk_state->arg_types,
- &walk_state->arg_count);
-
- } while (*op);
-
-#if 0
- /*
- * TBD: Cleanup parse ops on error
- */
- if (*op == NULL) {
- acpi_ps_pop_scope(parser_state, op,
- &walk_state->arg_types,
- &walk_state->arg_count);
- }
-#endif
- walk_state->prev_op = NULL;
- walk_state->prev_arg_types = walk_state->arg_types;
- return_ACPI_STATUS(status);
- }
-
- /* This scope complete? */
-
- if (acpi_ps_has_completed_scope(&(walk_state->parser_state))) {
- acpi_ps_pop_scope(&(walk_state->parser_state), op,
- &walk_state->arg_types,
- &walk_state->arg_count);
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Popped scope, Op=%p\n", *op));
- } else {
- *op = NULL;
- }
-
- return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ps_complete_final_op
- *
- * PARAMETERS: walk_state - Current state
- * op - Current Op
- * status - Current parse status before complete last
- * Op
- *
- * RETURN: Status
- *
- * DESCRIPTION: Complete last Op.
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ps_complete_final_op(struct acpi_walk_state *walk_state,
- union acpi_parse_object *op, acpi_status status)
-{
- acpi_status status2;
-
- ACPI_FUNCTION_TRACE_PTR(ps_complete_final_op, walk_state);
-
- /*
- * Complete the last Op (if not completed), and clear the scope stack.
- * It is easily possible to end an AML "package" with an unbounded number
- * of open scopes (such as when several ASL blocks are closed with
- * sequential closing braces). We want to terminate each one cleanly.
- */
- ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "AML package complete at Op %p\n",
- op));
- do {
- if (op) {
- if (walk_state->ascending_callback != NULL) {
- walk_state->op = op;
- walk_state->op_info =
- acpi_ps_get_opcode_info(op->common.
- aml_opcode);
- walk_state->opcode = op->common.aml_opcode;
-
- status =
- walk_state->ascending_callback(walk_state);
- status =
- acpi_ps_next_parse_state(walk_state, op,
- status);
- if (status == AE_CTRL_PENDING) {
- status =
- acpi_ps_complete_op(walk_state, &op,
- AE_OK);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
- }
-
- if (status == AE_CTRL_TERMINATE) {
- status = AE_OK;
-
- /* Clean up */
- do {
- if (op) {
- status2 =
- acpi_ps_complete_this_op
- (walk_state, op);
- if (ACPI_FAILURE
- (status2)) {
- return_ACPI_STATUS
- (status2);
- }
- }
-
- acpi_ps_pop_scope(&
- (walk_state->
- parser_state),
- &op,
- &walk_state->
- arg_types,
- &walk_state->
- arg_count);
-
- } while (op);
-
- return_ACPI_STATUS(status);
- }
-
- else if (ACPI_FAILURE(status)) {
-
- /* First error is most important */
-
- (void)
- acpi_ps_complete_this_op(walk_state,
- op);
- return_ACPI_STATUS(status);
- }
- }
-
- status2 = acpi_ps_complete_this_op(walk_state, op);
- if (ACPI_FAILURE(status2)) {
- return_ACPI_STATUS(status2);
- }
- }
-
- acpi_ps_pop_scope(&(walk_state->parser_state), &op,
- &walk_state->arg_types,
- &walk_state->arg_count);
-
- } while (op);
-
- return_ACPI_STATUS(status);
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_ps_parse_loop
walk_state->op_info =
acpi_ps_get_opcode_info(op->common.aml_opcode);
if (walk_state->op_info->flags & AML_NAMED) {
- if (acpi_gbl_depth) {
- acpi_gbl_depth--;
- }
-
if (op->common.aml_opcode == AML_REGION_OP ||
op->common.aml_opcode == AML_DATA_REGION_OP) {
/*
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff