ACPI_STATUS
AcpiEvInitializeGpeBlock (
ACPI_GPE_XRUPT_INFO *GpeXruptInfo,
ACPI_GPE_BLOCK_INFO *GpeBlock,
void *Context)
{
ACPI_STATUS Status;
ACPI_GPE_EVENT_INFO *GpeEventInfo;
UINT32 GpeEnabledCount;
UINT32 GpeIndex;
UINT32 i;
UINT32 j;
BOOLEAN *IsPollingNeeded = Context;
ACPI_ERROR_ONLY (UINT32 GpeNumber);
ACPI_FUNCTION_TRACE (EvInitializeGpeBlock);
/*
* Ignore a null GPE block (e.g., if no GPE block 1 exists), and
* any GPE blocks that have been initialized already.
*/
if (!GpeBlock || GpeBlock->Initialized)
{
return_ACPI_STATUS (AE_OK);
}
/*
* Enable all GPEs that have a corresponding method and have the
* ACPI_GPE_CAN_WAKE flag unset. Any other GPEs within this block
* must be enabled via the acpi_enable_gpe() interface.
*/
GpeEnabledCount = 0;
for (i = 0; i < GpeBlock->RegisterCount; i++)
{
for (j = 0; j < ACPI_GPE_REGISTER_WIDTH; j++)
{
/* Get the info block for this particular GPE */
GpeIndex = (i * ACPI_GPE_REGISTER_WIDTH) + j;
GpeEventInfo = &GpeBlock->EventInfo[GpeIndex];
ACPI_ERROR_ONLY(GpeNumber = GpeBlock->BlockBaseNumber + GpeIndex);
GpeEventInfo->Flags |= ACPI_GPE_INITIALIZED;
/*
* Ignore GPEs that have no corresponding _Lxx/_Exx method
* and GPEs that are used to wake the system
*/
if ((ACPI_GPE_DISPATCH_TYPE (GpeEventInfo->Flags) != ACPI_GPE_DISPATCH_METHOD) ||
(GpeEventInfo->Flags & ACPI_GPE_CAN_WAKE))
{
continue;
}
Status = AcpiEvAddGpeReference (GpeEventInfo);
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not enable GPE 0x%02X",
GpeNumber));
continue;
}
GpeEventInfo->Flags |= ACPI_GPE_AUTO_ENABLED;
if (IsPollingNeeded &&
ACPI_GPE_IS_POLLING_NEEDED (GpeEventInfo))
{
*IsPollingNeeded = TRUE;
}
GpeEnabledCount++;
}
}
if (GpeEnabledCount)
{
ACPI_INFO ((
"Enabled %u GPEs in block %02X to %02X", GpeEnabledCount,
(UINT32) GpeBlock->BlockBaseNumber,
(UINT32) (GpeBlock->BlockBaseNumber + (GpeBlock->GpeCount - 1))));
}
GpeBlock->Initialized = TRUE;
return_ACPI_STATUS (AE_OK);
}
static acpi_status acpi_ps_get_aml_opcode(struct acpi_walk_state *walk_state)
{
ACPI_ERROR_ONLY(u32 aml_offset);
ACPI_FUNCTION_TRACE_PTR(ps_get_aml_opcode, walk_state);
walk_state->aml = walk_state->parser_state.aml;
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_ONLY(aml_offset =
(u32)ACPI_PTR_DIFF(walk_state->aml,
walk_state->
parser_state.
aml_start));
ACPI_ERROR((AE_INFO,
"Unknown opcode 0x%.2X at table offset 0x%.4X, ignoring",
walk_state->opcode,
(u32)(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)(aml_offset +
sizeof(struct acpi_table_header)));
ACPI_ERROR((AE_INFO,
"Aborting disassembly, AML byte code is corrupt"));
/* Dump the context surrounding the invalid opcode */
acpi_ut_dump_buffer(((u8 *)walk_state->parser_state.
aml - 16), 48, DB_BYTE_DISPLAY,
(aml_offset +
sizeof(struct acpi_table_header) -
16));
acpi_os_printf(" */\n");
/*
* Just abort the disassembly, cannot continue because the
* parser is essentially lost. The disassembler can then
* randomly fail because an ill-constructed parse tree
* can result.
*/
return_ACPI_STATUS(AE_AML_BAD_OPCODE);
#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);
}
