| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Robert Moore | 1512 | 70.59% | 15 | 37.50% |
| Linus Torvalds (pre-git) | 194 | 9.06% | 3 | 7.50% |
| Andy Grover | 179 | 8.36% | 4 | 10.00% |
| Linus Torvalds | 119 | 5.56% | 3 | 7.50% |
| Len Brown | 54 | 2.52% | 6 | 15.00% |
| Lin Ming | 49 | 2.29% | 2 | 5.00% |
| Erik Schmauss | 26 | 1.21% | 2 | 5.00% |
| Lv Zheng | 7 | 0.33% | 3 | 7.50% |
| Alexey Y. Starikovskiy | 1 | 0.05% | 1 | 2.50% |
| Patrick Mochel | 1 | 0.05% | 1 | 2.50% |
| Total | 2142 | 40 |
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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: dsopcode - Dispatcher support for regions and fields * * Copyright (C) 2000 - 2019, 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_BIOS_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)) { status = AE_AML_BUFFER_LIMIT; ACPI_BIOS_EXCEPTION((AE_INFO, status, "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)); 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_adr_space_type space_id; 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; space_id = (acpi_adr_space_type)next_op->common.value.integer; /* 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); /* A zero-length operation region is unusable. Just warn */ if (!obj_desc->region.length && (space_id < ACPI_NUM_PREDEFINED_REGIONS)) { ACPI_WARNING((AE_INFO, "Operation Region [%4.4s] has zero length (SpaceId %X)", node->name.ascii, space_id)); } /* * 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); }
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