v4.19.13 snapshot.
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
new file mode 100644
index 0000000..78f9de2
--- /dev/null
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -0,0 +1,747 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/******************************************************************************
+ *
+ * Module Name: dsopcode - Dispatcher support for regions and fields
+ *
+ * Copyright (C) 2000 - 2018, Intel Corp.
+ *
+ *****************************************************************************/
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acparser.h"
+#include "amlcode.h"
+#include "acdispat.h"
+#include "acinterp.h"
+#include "acnamesp.h"
+#include "acevents.h"
+#include "actables.h"
+
+#define _COMPONENT ACPI_DISPATCHER
+ACPI_MODULE_NAME("dsopcode")
+
+/* Local prototypes */
+static acpi_status
+acpi_ds_init_buffer_field(u16 aml_opcode,
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object *buffer_desc,
+ union acpi_operand_object *offset_desc,
+ union acpi_operand_object *length_desc,
+ union acpi_operand_object *result_desc);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_initialize_region
+ *
+ * PARAMETERS: obj_handle - Region namespace node
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Front end to ev_initialize_region
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ds_initialize_region(acpi_handle obj_handle)
+{
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+
+ obj_desc = acpi_ns_get_attached_object(obj_handle);
+
+ /* Namespace is NOT locked */
+
+ status = acpi_ev_initialize_region(obj_desc);
+ return (status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_init_buffer_field
+ *
+ * PARAMETERS: aml_opcode - create_xxx_field
+ * obj_desc - buffer_field object
+ * buffer_desc - Host Buffer
+ * offset_desc - Offset into buffer
+ * length_desc - Length of field (CREATE_FIELD_OP only)
+ * result_desc - Where to store the result
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Perform actual initialization of a buffer field
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_ds_init_buffer_field(u16 aml_opcode,
+ union acpi_operand_object *obj_desc,
+ union acpi_operand_object *buffer_desc,
+ union acpi_operand_object *offset_desc,
+ union acpi_operand_object *length_desc,
+ union acpi_operand_object *result_desc)
+{
+ u32 offset;
+ u32 bit_offset;
+ u32 bit_count;
+ u8 field_flags;
+ acpi_status status;
+
+ ACPI_FUNCTION_TRACE_PTR(ds_init_buffer_field, obj_desc);
+
+ /* Host object must be a Buffer */
+
+ if (buffer_desc->common.type != ACPI_TYPE_BUFFER) {
+ ACPI_ERROR((AE_INFO,
+ "Target of Create Field is not a Buffer object - %s",
+ acpi_ut_get_object_type_name(buffer_desc)));
+
+ status = AE_AML_OPERAND_TYPE;
+ goto cleanup;
+ }
+
+ /*
+ * The last parameter to all of these opcodes (result_desc) started
+ * out as a name_string, and should therefore now be a NS node
+ * after resolution in acpi_ex_resolve_operands().
+ */
+ if (ACPI_GET_DESCRIPTOR_TYPE(result_desc) != ACPI_DESC_TYPE_NAMED) {
+ ACPI_ERROR((AE_INFO,
+ "(%s) destination not a NS Node [%s]",
+ acpi_ps_get_opcode_name(aml_opcode),
+ acpi_ut_get_descriptor_name(result_desc)));
+
+ status = AE_AML_OPERAND_TYPE;
+ goto cleanup;
+ }
+
+ offset = (u32) offset_desc->integer.value;
+
+ /*
+ * Setup the Bit offsets and counts, according to the opcode
+ */
+ switch (aml_opcode) {
+ case AML_CREATE_FIELD_OP:
+
+ /* Offset is in bits, count is in bits */
+
+ field_flags = AML_FIELD_ACCESS_BYTE;
+ bit_offset = offset;
+ bit_count = (u32) length_desc->integer.value;
+
+ /* Must have a valid (>0) bit count */
+
+ if (bit_count == 0) {
+ ACPI_ERROR((AE_INFO,
+ "Attempt to CreateField of length zero"));
+ status = AE_AML_OPERAND_VALUE;
+ goto cleanup;
+ }
+ break;
+
+ case AML_CREATE_BIT_FIELD_OP:
+
+ /* Offset is in bits, Field is one bit */
+
+ bit_offset = offset;
+ bit_count = 1;
+ field_flags = AML_FIELD_ACCESS_BYTE;
+ break;
+
+ case AML_CREATE_BYTE_FIELD_OP:
+
+ /* Offset is in bytes, field is one byte */
+
+ bit_offset = 8 * offset;
+ bit_count = 8;
+ field_flags = AML_FIELD_ACCESS_BYTE;
+ break;
+
+ case AML_CREATE_WORD_FIELD_OP:
+
+ /* Offset is in bytes, field is one word */
+
+ bit_offset = 8 * offset;
+ bit_count = 16;
+ field_flags = AML_FIELD_ACCESS_WORD;
+ break;
+
+ case AML_CREATE_DWORD_FIELD_OP:
+
+ /* Offset is in bytes, field is one dword */
+
+ bit_offset = 8 * offset;
+ bit_count = 32;
+ field_flags = AML_FIELD_ACCESS_DWORD;
+ break;
+
+ case AML_CREATE_QWORD_FIELD_OP:
+
+ /* Offset is in bytes, field is one qword */
+
+ bit_offset = 8 * offset;
+ bit_count = 64;
+ field_flags = AML_FIELD_ACCESS_QWORD;
+ break;
+
+ default:
+
+ ACPI_ERROR((AE_INFO,
+ "Unknown field creation opcode 0x%02X",
+ aml_opcode));
+ status = AE_AML_BAD_OPCODE;
+ goto cleanup;
+ }
+
+ /* Entire field must fit within the current length of the buffer */
+
+ if ((bit_offset + bit_count) > (8 * (u32)buffer_desc->buffer.length)) {
+ ACPI_ERROR((AE_INFO,
+ "Field [%4.4s] at bit offset/length %u/%u "
+ "exceeds size of target Buffer (%u bits)",
+ acpi_ut_get_node_name(result_desc), bit_offset,
+ bit_count, 8 * (u32)buffer_desc->buffer.length));
+ status = AE_AML_BUFFER_LIMIT;
+ goto cleanup;
+ }
+
+ /*
+ * Initialize areas of the field object that are common to all fields
+ * For field_flags, use LOCK_RULE = 0 (NO_LOCK),
+ * UPDATE_RULE = 0 (UPDATE_PRESERVE)
+ */
+ status =
+ acpi_ex_prep_common_field_object(obj_desc, field_flags, 0,
+ bit_offset, bit_count);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+
+ obj_desc->buffer_field.buffer_obj = buffer_desc;
+
+ /* Reference count for buffer_desc inherits obj_desc count */
+
+ buffer_desc->common.reference_count = (u16)
+ (buffer_desc->common.reference_count +
+ obj_desc->common.reference_count);
+
+cleanup:
+
+ /* Always delete the operands */
+
+ acpi_ut_remove_reference(offset_desc);
+ acpi_ut_remove_reference(buffer_desc);
+
+ if (aml_opcode == AML_CREATE_FIELD_OP) {
+ acpi_ut_remove_reference(length_desc);
+ }
+
+ /* On failure, delete the result descriptor */
+
+ if (ACPI_FAILURE(status)) {
+ acpi_ut_remove_reference(result_desc); /* Result descriptor */
+ } else {
+ /* Now the address and length are valid for this buffer_field */
+
+ obj_desc->buffer_field.flags |= AOPOBJ_DATA_VALID;
+ }
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_buffer_field_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * op - A valid buffer_field Op object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get buffer_field Buffer and Index
+ * Called from acpi_ds_exec_end_op during buffer_field parse tree walk
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_buffer_field_operands(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+ struct acpi_namespace_node *node;
+ union acpi_parse_object *next_op;
+
+ ACPI_FUNCTION_TRACE_PTR(ds_eval_buffer_field_operands, op);
+
+ /*
+ * This is where we evaluate the address and length fields of the
+ * create_xxx_field declaration
+ */
+ node = op->common.node;
+
+ /* next_op points to the op that holds the Buffer */
+
+ next_op = op->common.value.arg;
+
+ /* Evaluate/create the address and length operands */
+
+ status = acpi_ds_create_operands(walk_state, next_op);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ obj_desc = acpi_ns_get_attached_object(node);
+ if (!obj_desc) {
+ return_ACPI_STATUS(AE_NOT_EXIST);
+ }
+
+ /* Resolve the operands */
+
+ status =
+ acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR((AE_INFO, "(%s) bad operand(s), status 0x%X",
+ acpi_ps_get_opcode_name(op->common.aml_opcode),
+ status));
+
+ return_ACPI_STATUS(status);
+ }
+
+ /* Initialize the Buffer Field */
+
+ if (op->common.aml_opcode == AML_CREATE_FIELD_OP) {
+
+ /* NOTE: Slightly different operands for this opcode */
+
+ status =
+ acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
+ walk_state->operands[0],
+ walk_state->operands[1],
+ walk_state->operands[2],
+ walk_state->operands[3]);
+ } else {
+ /* All other, create_xxx_field opcodes */
+
+ status =
+ acpi_ds_init_buffer_field(op->common.aml_opcode, obj_desc,
+ walk_state->operands[0],
+ walk_state->operands[1], NULL,
+ walk_state->operands[2]);
+ }
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_region_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * op - A valid region Op object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get region address and length
+ * Called from acpi_ds_exec_end_op during op_region parse tree walk
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object *operand_desc;
+ struct acpi_namespace_node *node;
+ union acpi_parse_object *next_op;
+
+ ACPI_FUNCTION_TRACE_PTR(ds_eval_region_operands, op);
+
+ /*
+ * This is where we evaluate the address and length fields of the
+ * op_region declaration
+ */
+ node = op->common.node;
+
+ /* next_op points to the op that holds the space_ID */
+
+ next_op = op->common.value.arg;
+
+ /* next_op points to address op */
+
+ next_op = next_op->common.next;
+
+ /* Evaluate/create the address and length operands */
+
+ status = acpi_ds_create_operands(walk_state, next_op);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Resolve the length and address operands to numbers */
+
+ status =
+ acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ obj_desc = acpi_ns_get_attached_object(node);
+ if (!obj_desc) {
+ return_ACPI_STATUS(AE_NOT_EXIST);
+ }
+
+ /*
+ * Get the length operand and save it
+ * (at Top of stack)
+ */
+ operand_desc = walk_state->operands[walk_state->num_operands - 1];
+
+ obj_desc->region.length = (u32) operand_desc->integer.value;
+ acpi_ut_remove_reference(operand_desc);
+
+ /*
+ * Get the address and save it
+ * (at top of stack - 1)
+ */
+ operand_desc = walk_state->operands[walk_state->num_operands - 2];
+
+ obj_desc->region.address = (acpi_physical_address)
+ operand_desc->integer.value;
+ acpi_ut_remove_reference(operand_desc);
+
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
+ obj_desc,
+ ACPI_FORMAT_UINT64(obj_desc->region.address),
+ obj_desc->region.length));
+
+ status = acpi_ut_add_address_range(obj_desc->region.space_id,
+ obj_desc->region.address,
+ obj_desc->region.length, node);
+
+ /* Now the address and length are valid for this opregion */
+
+ obj_desc->region.flags |= AOPOBJ_DATA_VALID;
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_table_region_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * op - A valid region Op object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get region address and length.
+ * Called from acpi_ds_exec_end_op during data_table_region parse
+ * tree walk.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object **operand;
+ struct acpi_namespace_node *node;
+ union acpi_parse_object *next_op;
+ struct acpi_table_header *table;
+ u32 table_index;
+
+ ACPI_FUNCTION_TRACE_PTR(ds_eval_table_region_operands, op);
+
+ /*
+ * This is where we evaluate the Signature string, oem_id string,
+ * and oem_table_id string of the Data Table Region declaration
+ */
+ node = op->common.node;
+
+ /* next_op points to Signature string op */
+
+ next_op = op->common.value.arg;
+
+ /*
+ * Evaluate/create the Signature string, oem_id string,
+ * and oem_table_id string operands
+ */
+ status = acpi_ds_create_operands(walk_state, next_op);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ operand = &walk_state->operands[0];
+
+ /*
+ * Resolve the Signature string, oem_id string,
+ * and oem_table_id string operands
+ */
+ status =
+ acpi_ex_resolve_operands(op->common.aml_opcode, ACPI_WALK_OPERANDS,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+
+ /* Find the ACPI table */
+
+ status = acpi_tb_find_table(operand[0]->string.pointer,
+ operand[1]->string.pointer,
+ operand[2]->string.pointer, &table_index);
+ if (ACPI_FAILURE(status)) {
+ if (status == AE_NOT_FOUND) {
+ ACPI_ERROR((AE_INFO,
+ "ACPI Table [%4.4s] OEM:(%s, %s) not found in RSDT/XSDT",
+ operand[0]->string.pointer,
+ operand[1]->string.pointer,
+ operand[2]->string.pointer));
+ }
+ goto cleanup;
+ }
+
+ status = acpi_get_table_by_index(table_index, &table);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+
+ obj_desc = acpi_ns_get_attached_object(node);
+ if (!obj_desc) {
+ status = AE_NOT_EXIST;
+ goto cleanup;
+ }
+
+ obj_desc->region.address = ACPI_PTR_TO_PHYSADDR(table);
+ obj_desc->region.length = table->length;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
+ obj_desc,
+ ACPI_FORMAT_UINT64(obj_desc->region.address),
+ obj_desc->region.length));
+
+ /* Now the address and length are valid for this opregion */
+
+ obj_desc->region.flags |= AOPOBJ_DATA_VALID;
+
+cleanup:
+ acpi_ut_remove_reference(operand[0]);
+ acpi_ut_remove_reference(operand[1]);
+ acpi_ut_remove_reference(operand[2]);
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_data_object_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * op - A valid data_object Op object
+ * obj_desc - data_object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get the operands and complete the following data object types:
+ * Buffer, Package.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_data_object_operands(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op,
+ union acpi_operand_object *obj_desc)
+{
+ acpi_status status;
+ union acpi_operand_object *arg_desc;
+ u32 length;
+
+ ACPI_FUNCTION_TRACE(ds_eval_data_object_operands);
+
+ /* The first operand (for all of these data objects) is the length */
+
+ /*
+ * Set proper index into operand stack for acpi_ds_obj_stack_push
+ * invoked inside acpi_ds_create_operand.
+ */
+ walk_state->operand_index = walk_state->num_operands;
+
+ /* Ignore if child is not valid */
+
+ if (!op->common.value.arg) {
+ ACPI_ERROR((AE_INFO,
+ "Missing child while evaluating opcode %4.4X, Op %p",
+ op->common.aml_opcode, op));
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ status = acpi_ds_create_operand(walk_state, op->common.value.arg, 1);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ status = acpi_ex_resolve_operands(walk_state->opcode,
+ &(walk_state->
+ operands[walk_state->num_operands -
+ 1]), walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ /* Extract length operand */
+
+ arg_desc = walk_state->operands[walk_state->num_operands - 1];
+ length = (u32) arg_desc->integer.value;
+
+ /* Cleanup for length operand */
+
+ status = acpi_ds_obj_stack_pop(1, walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ acpi_ut_remove_reference(arg_desc);
+
+ /*
+ * Create the actual data object
+ */
+ switch (op->common.aml_opcode) {
+ case AML_BUFFER_OP:
+
+ status =
+ acpi_ds_build_internal_buffer_obj(walk_state, op, length,
+ &obj_desc);
+ break;
+
+ case AML_PACKAGE_OP:
+ case AML_VARIABLE_PACKAGE_OP:
+
+ status =
+ acpi_ds_build_internal_package_obj(walk_state, op, length,
+ &obj_desc);
+ break;
+
+ default:
+
+ return_ACPI_STATUS(AE_AML_BAD_OPCODE);
+ }
+
+ if (ACPI_SUCCESS(status)) {
+ /*
+ * Return the object in the walk_state, unless the parent is a package -
+ * in this case, the return object will be stored in the parse tree
+ * for the package.
+ */
+ if ((!op->common.parent) ||
+ ((op->common.parent->common.aml_opcode != AML_PACKAGE_OP) &&
+ (op->common.parent->common.aml_opcode !=
+ AML_VARIABLE_PACKAGE_OP)
+ && (op->common.parent->common.aml_opcode !=
+ AML_NAME_OP))) {
+ walk_state->result_obj = obj_desc;
+ }
+ }
+
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_eval_bank_field_operands
+ *
+ * PARAMETERS: walk_state - Current walk
+ * op - A valid bank_field Op object
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Get bank_field bank_value
+ * Called from acpi_ds_exec_end_op during bank_field parse tree walk
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ds_eval_bank_field_operands(struct acpi_walk_state *walk_state,
+ union acpi_parse_object *op)
+{
+ acpi_status status;
+ union acpi_operand_object *obj_desc;
+ union acpi_operand_object *operand_desc;
+ struct acpi_namespace_node *node;
+ union acpi_parse_object *next_op;
+ union acpi_parse_object *arg;
+
+ ACPI_FUNCTION_TRACE_PTR(ds_eval_bank_field_operands, op);
+
+ /*
+ * This is where we evaluate the bank_value field of the
+ * bank_field declaration
+ */
+
+ /* next_op points to the op that holds the Region */
+
+ next_op = op->common.value.arg;
+
+ /* next_op points to the op that holds the Bank Register */
+
+ next_op = next_op->common.next;
+
+ /* next_op points to the op that holds the Bank Value */
+
+ next_op = next_op->common.next;
+
+ /*
+ * Set proper index into operand stack for acpi_ds_obj_stack_push
+ * invoked inside acpi_ds_create_operand.
+ *
+ * We use walk_state->Operands[0] to store the evaluated bank_value
+ */
+ walk_state->operand_index = 0;
+
+ status = acpi_ds_create_operand(walk_state, next_op, 0);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ status = acpi_ex_resolve_to_value(&walk_state->operands[0], walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ ACPI_DUMP_OPERANDS(ACPI_WALK_OPERANDS,
+ acpi_ps_get_opcode_name(op->common.aml_opcode), 1);
+ /*
+ * Get the bank_value operand and save it
+ * (at Top of stack)
+ */
+ operand_desc = walk_state->operands[0];
+
+ /* Arg points to the start Bank Field */
+
+ arg = acpi_ps_get_arg(op, 4);
+ while (arg) {
+
+ /* Ignore OFFSET and ACCESSAS terms here */
+
+ if (arg->common.aml_opcode == AML_INT_NAMEDFIELD_OP) {
+ node = arg->common.node;
+
+ obj_desc = acpi_ns_get_attached_object(node);
+ if (!obj_desc) {
+ return_ACPI_STATUS(AE_NOT_EXIST);
+ }
+
+ obj_desc->bank_field.value =
+ (u32) operand_desc->integer.value;
+ }
+
+ /* Move to next field in the list */
+
+ arg = arg->common.next;
+ }
+
+ acpi_ut_remove_reference(operand_desc);
+ return_ACPI_STATUS(status);
+}