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Bring our local hack for wakeup back from

Browse Source 
sys/contrib/dev/acpica/Subsystem/Hardware/Attic/hwxface.c to the proper
location after AcpiEnterSleepState().

 - Wait for the WAK_STS bit
 - Evaluate the _WAK method and check result code
This commit is contained in:
Mitsuru IWASAKI 2001-03-07 15:22:14 +00:00
parent 6573bc0b37
commit c30382df80
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=73962
1 changed files with 88 additions and 0 deletions
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88
sys/dev/acpica/acpi.c
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@ -765,6 +765,92 @@ acpi_AllocBuffer(int size)
return(buf);
}
static ACPI_STATUS __inline
acpi_wakeup(UINT8 state)
{
UINT16 Count;
ACPI_STATUS Status;
ACPI_OBJECT_LIST Arg_list;
ACPI_OBJECT Arg;
ACPI_OBJECT Objects[3]; /* package plus 2 number objects */
ACPI_BUFFER ReturnBuffer;
FUNCTION_TRACE_U32(__FUNCTION__, state);
/* wait for the WAK_STS bit */
Count = 0;
while (!(AcpiHwRegisterBitAccess(ACPI_READ, ACPI_MTX_LOCK, WAK_STS))) {
AcpiOsSleepUsec(1000);
/*
* Some BIOSes don't set WAK_STS at all,
* give up waiting for wakeup if we time out.
*/
if (Count > 1000) {
break; /* giving up */
}
Count++;
}
/*
* Evaluate the _WAK method
*/
MEMSET(&Arg_list, 0, sizeof(Arg_list));
Arg_list.Count = 1;
Arg_list.Pointer = &Arg;
MEMSET(&Arg, 0, sizeof(Arg));
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = state;
/* Set up _WAK result code buffer */
MEMSET(Objects, 0, sizeof(Objects));
ReturnBuffer.Length = sizeof(Objects);
ReturnBuffer.Pointer = Objects;
AcpiEvaluateObject (NULL, "\\_WAK", &Arg_list, &ReturnBuffer);
Status = AE_OK;
/* Check result code for _WAK */
if (Objects[0].Type != ACPI_TYPE_PACKAGE ||
Objects[1].Type != ACPI_TYPE_INTEGER ||
Objects[2].Type != ACPI_TYPE_INTEGER) {
/*
* In many BIOSes, _WAK doesn't return a result code.
* We don't need to worry about it too much :-).
*/
DEBUG_PRINT (ACPI_INFO,
("acpi_wakeup: _WAK result code is corrupted, "
"but should be OK.\n"));
} else {
/* evaluate status code */
switch (Objects[1].Integer.Value) {
case 0x00000001:
DEBUG_PRINT (ACPI_ERROR,
("acpi_wakeup: Wake was signaled "
"but failed due to lack of power.\n"));
Status = AE_ERROR;
break;
case 0x00000002:
DEBUG_PRINT (ACPI_ERROR,
("acpi_wakeup: Wake was signaled "
"but failed due to thermal condition.\n"));
Status = AE_ERROR;
break;
}
/* evaluate PSS code */
if (Objects[2].Integer.Value == 0) {
DEBUG_PRINT (ACPI_ERROR,
("acpi_wakeup: The targeted S-state "
"was not entered because of too much current "
"being drawn from the power supply.\n"));
Status = AE_ERROR;
}
}
return_ACPI_STATUS(Status);
}
/*
* Set the system sleep state
*
@ -804,7 +890,9 @@ acpi_SetSleepState(struct acpi_softc *sc, int state)
status = AcpiEnterSleepState((UINT8)state);
if (status != AE_OK) {
device_printf(sc->acpi_dev, "AcpiEnterSleepState failed - %s\n", acpi_strerror(status));
break;
}
acpi_wakeup((UINT8)state);
DEVICE_RESUME(root_bus);
sc->acpi_sstate = ACPI_STATE_S0;
acpi_enable_fixed_events(sc);