void
AcpiHwClearGpe (
UINT32 GpeNumber)
{
UINT32 RegisterIndex;
UINT32 BitMask;
FUNCTION_ENTRY ();
/*
* Translate GPE number to index into global registers array.
*/
RegisterIndex = AcpiGbl_GpeValid[GpeNumber];
/*
* Figure out the bit offset for this GPE within the target register.
*/
BitMask = AcpiGbl_DecodeTo8bit [MOD_8 (GpeNumber)];
/*
* Write a one to the appropriate bit in the status register to
* clear this GPE.
*/
AcpiOsWritePort (AcpiGbl_GpeRegisters[RegisterIndex].StatusAddr, BitMask, 8);
}
static void
acpi_cpu_startup_cx(struct acpi_cpu_softc *sc)
{
acpi_cpu_cx_list(sc);
SYSCTL_ADD_STRING(&sc->cpu_sysctl_ctx,
SYSCTL_CHILDREN(device_get_sysctl_tree(sc->cpu_dev)),
OID_AUTO, "cx_supported", CTLFLAG_RD,
sc->cpu_cx_supported, 0,
"Cx/microsecond values for supported Cx states");
SYSCTL_ADD_PROC(&sc->cpu_sysctl_ctx,
SYSCTL_CHILDREN(device_get_sysctl_tree(sc->cpu_dev)),
OID_AUTO, "cx_lowest", CTLTYPE_STRING | CTLFLAG_RW,
(void *)sc, 0, acpi_cpu_cx_lowest_sysctl, "A",
"lowest Cx sleep state to use");
SYSCTL_ADD_PROC(&sc->cpu_sysctl_ctx,
SYSCTL_CHILDREN(device_get_sysctl_tree(sc->cpu_dev)),
OID_AUTO, "cx_usage", CTLTYPE_STRING | CTLFLAG_RD,
(void *)sc, 0, acpi_cpu_usage_sysctl, "A",
"percent usage for each Cx state");
#ifdef notyet
/* Signal platform that we can handle _CST notification. */
if (!cpu_cx_generic && cpu_cst_cnt != 0) {
ACPI_LOCK(acpi);
AcpiOsWritePort(cpu_smi_cmd, cpu_cst_cnt, 8);
ACPI_UNLOCK(acpi);
}
#endif
}
void
AcpiHwDisableGpe (
UINT32 GpeNumber)
{
UINT32 InByte;
UINT32 RegisterIndex;
UINT32 BitMask;
FUNCTION_ENTRY ();
/*
* Translate GPE number to index into global registers array.
*/
RegisterIndex = AcpiGbl_GpeValid[GpeNumber];
/*
* Figure out the bit offset for this GPE within the target register.
*/
BitMask = AcpiGbl_DecodeTo8bit [MOD_8 (GpeNumber)];
/*
* Read the current value of the register, clear the appropriate bit,
* and write out the new register value to disable the GPE.
*/
InByte = 0;
AcpiOsReadPort (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr, &InByte, 8);
AcpiOsWritePort (AcpiGbl_GpeRegisters[RegisterIndex].EnableAddr,
(InByte & ~BitMask), 8);
}
static uint8_t
thinkpad_brightness_read(thinkpad_softc_t *sc)
{
uint32_t val = 0;
AcpiOsWritePort(IO_RTC, 0x6c, 8);
AcpiOsReadPort(IO_RTC + 1, &val, 8);
return val & 7;
}
static void
acpi_cst_startup(struct acpi_cst_softc *sc)
{
struct acpi_cpu_softc *cpu = sc->cst_parent;
int i, bm_rld_done = 0;
for (i = 0; i < sc->cst_cx_count; ++i) {
struct acpi_cst_cx *cx = &sc->cst_cx_states[i];
int error;
/* If there are C3(+) states, always enable bus master wakeup */
if (cx->type >= ACPI_STATE_C3 && !bm_rld_done &&
(acpi_cst_quirks & ACPI_CST_QUIRK_NO_BM) == 0) {
acpi_cst_c3_bm_rld(sc);
bm_rld_done = 1;
}
/* Redo the Cx setup, since quirks have been changed */
error = acpi_cst_cx_setup(cx);
if (error)
panic("C%d startup setup failed: %d", i + 1, error);
}
acpi_cst_support_list(sc);
SYSCTL_ADD_STRING(&cpu->pcpu_sysctl_ctx,
SYSCTL_CHILDREN(cpu->pcpu_sysctl_tree),
OID_AUTO, "cx_supported", CTLFLAG_RD,
sc->cst_cx_supported, 0,
"Cx/microsecond values for supported Cx states");
SYSCTL_ADD_PROC(&cpu->pcpu_sysctl_ctx,
SYSCTL_CHILDREN(cpu->pcpu_sysctl_tree),
OID_AUTO, "cx_lowest", CTLTYPE_STRING | CTLFLAG_RW,
(void *)sc, 0, acpi_cst_lowest_sysctl, "A",
"requested lowest Cx sleep state");
SYSCTL_ADD_PROC(&cpu->pcpu_sysctl_ctx,
SYSCTL_CHILDREN(cpu->pcpu_sysctl_tree),
OID_AUTO, "cx_lowest_use", CTLTYPE_STRING | CTLFLAG_RD,
(void *)sc, 0, acpi_cst_lowest_use_sysctl, "A",
"lowest Cx sleep state to use");
SYSCTL_ADD_PROC(&cpu->pcpu_sysctl_ctx,
SYSCTL_CHILDREN(cpu->pcpu_sysctl_tree),
OID_AUTO, "cx_usage", CTLTYPE_STRING | CTLFLAG_RD,
(void *)sc, 0, acpi_cst_usage_sysctl, "A",
"percent usage for each Cx state");
#ifdef notyet
/* Signal platform that we can handle _CST notification. */
if (!acpi_cst_use_fadt && acpi_cst_ctrl != 0) {
ACPI_LOCK(acpi);
AcpiOsWritePort(acpi_cst_smi_cmd, acpi_cst_ctrl, 8);
ACPI_UNLOCK(acpi);
}
#endif
}
static ACPI_STATUS
enter_s4_with_bios(void)
{
ACPI_OBJECT_LIST ArgList;
ACPI_OBJECT Arg;
u_long ef;
UINT32 ret;
ACPI_STATUS status;
/* run the _PTS and _GTS methods */
ACPI_MEMSET(&ArgList, 0, sizeof(ArgList));
ArgList.Count = 1;
ArgList.Pointer = &Arg;
ACPI_MEMSET(&Arg, 0, sizeof(Arg));
Arg.Type = ACPI_TYPE_INTEGER;
Arg.Integer.Value = ACPI_STATE_S4;
AcpiEvaluateObject(NULL, "\\_PTS", &ArgList, NULL);
AcpiEvaluateObject(NULL, "\\_GTS", &ArgList, NULL);
/* clear wake status */
AcpiSetRegister(ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_LOCK);
ef = read_eflags();
disable_intr();
AcpiHwDisableNonWakeupGpes();
/* flush caches */
ACPI_FLUSH_CPU_CACHE();
/*
* write the value to command port and wait until we enter sleep state
*/
do {
AcpiOsStall(1000000);
AcpiOsWritePort(AcpiGbl_FADT->SmiCmd,
AcpiGbl_FADT->S4BiosReq, 8);
status = AcpiGetRegister(ACPI_BITREG_WAKE_STATUS,
&ret, ACPI_MTX_LOCK);
if (ACPI_FAILURE(status))
break;
} while (!ret);
AcpiHwEnableNonWakeupGpes();
write_eflags(ef);
return (AE_OK);
}
static void
acpi_px_startup(void *arg)
{
/* Signal to the platform that we are taking over CPU control. */
if (AcpiGbl_FADT.PstateControl == 0)
return;
ACPI_LOCK(acpi);
AcpiOsWritePort(AcpiGbl_FADT.SmiCommand, AcpiGbl_FADT.PstateControl, 8);
ACPI_UNLOCK(acpi);
}
static void
acpicpu_cstate_cst_bios(void)
{
const uint8_t val = AcpiGbl_FADT.CstControl;
const uint32_t addr = AcpiGbl_FADT.SmiCommand;
if (addr == 0 || val == 0)
return;
(void)AcpiOsWritePort(addr, val, 8);
}
ACPI_STATUS
AcpiHwWritePort (
ACPI_IO_ADDRESS Address,
UINT32 Value,
UINT32 Width)
{
ACPI_STATUS Status;
UINT32 i;
/* Truncate address to 16 bits if requested */
if (AcpiGbl_TruncateIoAddresses)
{
Address &= ACPI_UINT16_MAX;
}
/* Validate the entire request and perform the I/O */
Status = AcpiHwValidateIoRequest (Address, Width);
if (ACPI_SUCCESS (Status))
{
Status = AcpiOsWritePort (Address, Value, Width);
return (Status);
}
if (Status != AE_AML_ILLEGAL_ADDRESS)
{
return (Status);
}
/*
* There has been a protection violation within the request. Fall
* back to byte granularity port I/O and ignore the failing bytes.
* This provides Windows compatibility.
*/
for (i = 0; i < Width; i += 8)
{
/* Validate and write one byte */
if (AcpiHwValidateIoRequest (Address, 8) == AE_OK)
{
Status = AcpiOsWritePort (Address, (Value >> i) & 0xFF, 8);
if (ACPI_FAILURE (Status))
{
return (Status);
}
}
Address++;
}
ACPI_STATUS
AcpiExSystemIoSpaceHandler (
UINT32 Function,
ACPI_PHYSICAL_ADDRESS Address,
UINT32 BitWidth,
ACPI_INTEGER *Value,
void *HandlerContext,
void *RegionContext)
{
ACPI_STATUS Status = AE_OK;
UINT32 Value32;
ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"System-IO (width %d) R/W %d Address=%8.8X%8.8X\n",
BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));
/* Decode the function parameter */
switch (Function)
{
case ACPI_READ:
Status = AcpiOsReadPort ((ACPI_IO_ADDRESS) Address,
&Value32, BitWidth);
*Value = Value32;
break;
case ACPI_WRITE:
Status = AcpiOsWritePort ((ACPI_IO_ADDRESS) Address,
(UINT32) *Value, BitWidth);
break;
default:
Status = AE_BAD_PARAMETER;
break;
}
return_ACPI_STATUS (Status);
}
ACPI_STATUS
AcpiHwSetMode (
UINT32 Mode)
{
ACPI_STATUS Status;
UINT32 Retry;
ACPI_FUNCTION_TRACE (HwSetMode);
/*
* ACPI 2.0 clarified that if SMI_CMD in FADT is zero,
* system does not support mode transition.
*/
if (!AcpiGbl_FADT.SmiCommand)
{
ACPI_ERROR ((AE_INFO, "No SMI_CMD in FADT, mode transition failed"));
return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
}
/*
* ACPI 2.0 clarified the meaning of ACPI_ENABLE and ACPI_DISABLE
* in FADT: If it is zero, enabling or disabling is not supported.
* As old systems may have used zero for mode transition,
* we make sure both the numbers are zero to determine these
* transitions are not supported.
*/
if (!AcpiGbl_FADT.AcpiEnable && !AcpiGbl_FADT.AcpiDisable)
{
ACPI_ERROR ((AE_INFO,
"No ACPI mode transition supported in this system (enable/disable both zero)"));
return_ACPI_STATUS (AE_OK);
}
switch (Mode)
{
case ACPI_SYS_MODE_ACPI:
/* BIOS should have disabled ALL fixed and GP events */
Status = AcpiOsWritePort (AcpiGbl_FADT.SmiCommand,
(UINT32) AcpiGbl_FADT.AcpiEnable, 8);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Attempting to enable ACPI mode\n"));
break;
case ACPI_SYS_MODE_LEGACY:
/*
* BIOS should clear all fixed status bits and restore fixed event
* enable bits to default
*/
Status = AcpiOsWritePort (AcpiGbl_FADT.SmiCommand,
(UINT32) AcpiGbl_FADT.AcpiDisable, 8);
ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
"Attempting to enable Legacy (non-ACPI) mode\n"));
break;
default:
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
if (ACPI_FAILURE (Status))
{
ACPI_EXCEPTION ((AE_INFO, Status,
"Could not write ACPI mode change"));
return_ACPI_STATUS (Status);
}
/*
* Some hardware takes a LONG time to switch modes. Give them 3 sec to
* do so, but allow faster systems to proceed more quickly.
*/
Retry = 3000;
while (Retry)
{
if (AcpiHwGetMode() == Mode)
{
ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Mode %X successfully enabled\n",
Mode));
return_ACPI_STATUS (AE_OK);
}
AcpiOsStall(1000);
Retry--;
}
ACPI_ERROR ((AE_INFO, "Hardware did not change modes"));
return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE);
}
