ACPI ERST: build the ACPI ERST table
This builds the ACPI ERST table to inform OSPM how to communicate with the acpi-erst device. Signed-off-by: Eric DeVolder <eric.devolder@oracle.com> Reviewed-by: Ani Sinha <ani@anisinha.ca> Message-Id: <1643402289-22216-7-git-send-email-eric.devolder@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Eric DeVolder
Michael S. Tsirkin
parent
f7e26ffa59
commit
c9cd06ca00
211
hw/acpi/erst.c
211
hw/acpi/erst.c
@ -55,6 +55,27 @@
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#define STATUS_RECORD_STORE_EMPTY 0x04
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#define STATUS_RECORD_NOT_FOUND 0x05
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/* ACPI 4.0: Table 17-19 Serialization Instructions */
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#define INST_READ_REGISTER 0x00
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#define INST_READ_REGISTER_VALUE 0x01
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#define INST_WRITE_REGISTER 0x02
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#define INST_WRITE_REGISTER_VALUE 0x03
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#define INST_NOOP 0x04
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#define INST_LOAD_VAR1 0x05
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#define INST_LOAD_VAR2 0x06
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#define INST_STORE_VAR1 0x07
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#define INST_ADD 0x08
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#define INST_SUBTRACT 0x09
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#define INST_ADD_VALUE 0x0A
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#define INST_SUBTRACT_VALUE 0x0B
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#define INST_STALL 0x0C
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#define INST_STALL_WHILE_TRUE 0x0D
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#define INST_SKIP_NEXT_INSTRUCTION_IF_TRUE 0x0E
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#define INST_GOTO 0x0F
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#define INST_SET_SRC_ADDRESS_BASE 0x10
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#define INST_SET_DST_ADDRESS_BASE 0x11
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#define INST_MOVE_DATA 0x12
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/* UEFI 2.1: Appendix N Common Platform Error Record */
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#define UEFI_CPER_RECORD_MIN_SIZE 128U
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#define UEFI_CPER_RECORD_LENGTH_OFFSET 20U
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@ -166,6 +187,196 @@ typedef struct {
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} ERSTDeviceState;
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/*******************************************************************/
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/*******************************************************************/
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typedef struct {
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GArray *table_data;
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pcibus_t bar;
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uint8_t instruction;
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uint8_t flags;
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uint8_t register_bit_width;
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pcibus_t register_offset;
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} BuildSerializationInstructionEntry;
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/* ACPI 4.0: 17.4.1.2 Serialization Instruction Entries */
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static void build_serialization_instruction(
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BuildSerializationInstructionEntry *e,
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uint8_t serialization_action,
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uint64_t value)
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{
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/* ACPI 4.0: Table 17-18 Serialization Instruction Entry */
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struct AcpiGenericAddress gas;
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uint64_t mask;
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/* Serialization Action */
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build_append_int_noprefix(e->table_data, serialization_action, 1);
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/* Instruction */
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build_append_int_noprefix(e->table_data, e->instruction, 1);
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/* Flags */
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build_append_int_noprefix(e->table_data, e->flags, 1);
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/* Reserved */
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build_append_int_noprefix(e->table_data, 0, 1);
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/* Register Region */
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gas.space_id = AML_SYSTEM_MEMORY;
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gas.bit_width = e->register_bit_width;
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gas.bit_offset = 0;
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gas.access_width = (uint8_t)ctz32(e->register_bit_width) - 2;
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gas.address = (uint64_t)(e->bar + e->register_offset);
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build_append_gas_from_struct(e->table_data, &gas);
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/* Value */
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build_append_int_noprefix(e->table_data, value, 8);
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/* Mask */
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mask = (1ULL << (e->register_bit_width - 1) << 1) - 1;
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build_append_int_noprefix(e->table_data, mask, 8);
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}
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/* ACPI 4.0: 17.4.1 Serialization Action Table */
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void build_erst(GArray *table_data, BIOSLinker *linker, Object *erst_dev,
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const char *oem_id, const char *oem_table_id)
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{
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/*
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* Serialization Action Table
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* The serialization action table must be generated first
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* so that its size can be known in order to populate the
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* Instruction Entry Count field.
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*/
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unsigned action;
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GArray *table_instruction_data = g_array_new(FALSE, FALSE, sizeof(char));
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pcibus_t bar0 = pci_get_bar_addr(PCI_DEVICE(erst_dev), 0);
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AcpiTable table = { .sig = "ERST", .rev = 1, .oem_id = oem_id,
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.oem_table_id = oem_table_id };
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/* Contexts for the different ways ACTION and VALUE are accessed */
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BuildSerializationInstructionEntry rd_value_32_val = {
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.table_data = table_instruction_data, .bar = bar0, .flags = 0,
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.instruction = INST_READ_REGISTER_VALUE,
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.register_bit_width = 32,
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.register_offset = ERST_VALUE_OFFSET,
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};
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BuildSerializationInstructionEntry rd_value_32 = {
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.table_data = table_instruction_data, .bar = bar0, .flags = 0,
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.instruction = INST_READ_REGISTER,
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.register_bit_width = 32,
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.register_offset = ERST_VALUE_OFFSET,
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};
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BuildSerializationInstructionEntry rd_value_64 = {
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.table_data = table_instruction_data, .bar = bar0, .flags = 0,
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.instruction = INST_READ_REGISTER,
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.register_bit_width = 64,
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.register_offset = ERST_VALUE_OFFSET,
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};
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BuildSerializationInstructionEntry wr_value_32_val = {
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.table_data = table_instruction_data, .bar = bar0, .flags = 0,
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.instruction = INST_WRITE_REGISTER_VALUE,
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.register_bit_width = 32,
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.register_offset = ERST_VALUE_OFFSET,
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};
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BuildSerializationInstructionEntry wr_value_32 = {
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.table_data = table_instruction_data, .bar = bar0, .flags = 0,
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.instruction = INST_WRITE_REGISTER,
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.register_bit_width = 32,
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.register_offset = ERST_VALUE_OFFSET,
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};
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BuildSerializationInstructionEntry wr_value_64 = {
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.table_data = table_instruction_data, .bar = bar0, .flags = 0,
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.instruction = INST_WRITE_REGISTER,
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.register_bit_width = 64,
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.register_offset = ERST_VALUE_OFFSET,
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};
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BuildSerializationInstructionEntry wr_action = {
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.table_data = table_instruction_data, .bar = bar0, .flags = 0,
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.instruction = INST_WRITE_REGISTER_VALUE,
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.register_bit_width = 32,
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.register_offset = ERST_ACTION_OFFSET,
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};
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trace_acpi_erst_pci_bar_0(bar0);
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/* Serialization Instruction Entries */
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action = ACTION_BEGIN_WRITE_OPERATION;
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build_serialization_instruction(&wr_action, action, action);
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action = ACTION_BEGIN_READ_OPERATION;
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build_serialization_instruction(&wr_action, action, action);
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action = ACTION_BEGIN_CLEAR_OPERATION;
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build_serialization_instruction(&wr_action, action, action);
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action = ACTION_END_OPERATION;
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build_serialization_instruction(&wr_action, action, action);
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action = ACTION_SET_RECORD_OFFSET;
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build_serialization_instruction(&wr_value_32, action, 0);
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build_serialization_instruction(&wr_action, action, action);
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action = ACTION_EXECUTE_OPERATION;
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build_serialization_instruction(&wr_value_32_val, action,
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ERST_EXECUTE_OPERATION_MAGIC);
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build_serialization_instruction(&wr_action, action, action);
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action = ACTION_CHECK_BUSY_STATUS;
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build_serialization_instruction(&wr_action, action, action);
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build_serialization_instruction(&rd_value_32_val, action, 0x01);
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action = ACTION_GET_COMMAND_STATUS;
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build_serialization_instruction(&wr_action, action, action);
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build_serialization_instruction(&rd_value_32, action, 0);
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action = ACTION_GET_RECORD_IDENTIFIER;
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build_serialization_instruction(&wr_action, action, action);
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build_serialization_instruction(&rd_value_64, action, 0);
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action = ACTION_SET_RECORD_IDENTIFIER;
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build_serialization_instruction(&wr_value_64, action, 0);
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build_serialization_instruction(&wr_action, action, action);
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action = ACTION_GET_RECORD_COUNT;
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build_serialization_instruction(&wr_action, action, action);
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build_serialization_instruction(&rd_value_32, action, 0);
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action = ACTION_BEGIN_DUMMY_WRITE_OPERATION;
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build_serialization_instruction(&wr_action, action, action);
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action = ACTION_GET_ERROR_LOG_ADDRESS_RANGE;
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build_serialization_instruction(&wr_action, action, action);
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build_serialization_instruction(&rd_value_64, action, 0);
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action = ACTION_GET_ERROR_LOG_ADDRESS_LENGTH;
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build_serialization_instruction(&wr_action, action, action);
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build_serialization_instruction(&rd_value_64, action, 0);
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action = ACTION_GET_ERROR_LOG_ADDRESS_RANGE_ATTRIBUTES;
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build_serialization_instruction(&wr_action, action, action);
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build_serialization_instruction(&rd_value_32, action, 0);
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action = ACTION_GET_EXECUTE_OPERATION_TIMINGS;
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build_serialization_instruction(&wr_action, action, action);
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build_serialization_instruction(&rd_value_64, action, 0);
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/* Serialization Header */
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acpi_table_begin(&table, table_data);
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/* Serialization Header Size */
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build_append_int_noprefix(table_data, 48, 4);
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/* Reserved */
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build_append_int_noprefix(table_data, 0, 4);
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/*
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* Instruction Entry Count
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* Each instruction entry is 32 bytes
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*/
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g_assert((table_instruction_data->len) % 32 == 0);
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build_append_int_noprefix(table_data,
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(table_instruction_data->len / 32), 4);
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/* Serialization Instruction Entries */
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g_array_append_vals(table_data, table_instruction_data->data,
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table_instruction_data->len);
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g_array_free(table_instruction_data, TRUE);
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acpi_table_end(linker, &table);
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}
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/*******************************************************************/
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/*******************************************************************/
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static uint8_t *get_nvram_ptr_by_index(ERSTDeviceState *s, unsigned index)
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