static ACPI_STATUS
EcWrite(struct acpi_ec_softc *sc, UINT8 Address, UINT8 Data)
{
ACPI_STATUS status;
u_int gen_count;
ACPI_SERIAL_ASSERT(ec);
status = EcCommand(sc, EC_COMMAND_WRITE);
if (ACPI_FAILURE(status))
return (status);
gen_count = sc->ec_gencount;
EC_SET_DATA(sc, Address);
status = EcWaitEvent(sc, EC_EVENT_INPUT_BUFFER_EMPTY, gen_count);
if (ACPI_FAILURE(status)) {
device_printf(sc->ec_dev, "EcWrite: failed waiting for sent address\n");
return (status);
}
gen_count = sc->ec_gencount;
EC_SET_DATA(sc, Data);
status = EcWaitEvent(sc, EC_EVENT_INPUT_BUFFER_EMPTY, gen_count);
if (ACPI_FAILURE(status)) {
device_printf(sc->ec_dev, "EcWrite: failed waiting for sent data\n");
return (status);
}
return (AE_OK);
}
static ACPI_STATUS
EcWrite(struct acpi_ec_softc *sc, UINT8 Address, UINT8 Data)
{
ACPI_STATUS status;
UINT8 data;
u_int gen_count;
ACPI_SERIAL_ASSERT(ec);
CTR2(KTR_ACPI, "ec write to %#x, data %#x", Address, Data);
/* If we can't start burst mode, continue anyway. */
status = EcCommand(sc, EC_COMMAND_BURST_ENABLE);
if (status == AE_OK) {
data = EC_GET_DATA(sc);
if (data == EC_BURST_ACK) {
CTR0(KTR_ACPI, "ec burst enabled");
sc->ec_burstactive = TRUE;
}
}
status = EcCommand(sc, EC_COMMAND_WRITE);
if (ACPI_FAILURE(status))
return (status);
gen_count = sc->ec_gencount;
EC_SET_DATA(sc, Address);
status = EcWaitEvent(sc, EC_EVENT_INPUT_BUFFER_EMPTY, gen_count);
if (ACPI_FAILURE(status)) {
device_printf(sc->ec_dev, "EcRead: failed waiting for sent address\n");
return (status);
}
gen_count = sc->ec_gencount;
EC_SET_DATA(sc, Data);
status = EcWaitEvent(sc, EC_EVENT_INPUT_BUFFER_EMPTY, gen_count);
if (ACPI_FAILURE(status)) {
device_printf(sc->ec_dev, "EcWrite: failed waiting for sent data\n");
return (status);
}
if (sc->ec_burstactive) {
sc->ec_burstactive = FALSE;
status = EcCommand(sc, EC_COMMAND_BURST_DISABLE);
if (ACPI_FAILURE(status))
return (status);
CTR0(KTR_ACPI, "ec disabled burst ok");
}
return (AE_OK);
}
static ACPI_STATUS
EcRead(struct acpi_ec_softc *sc, UINT8 Address, UINT8 *Data)
{
ACPI_STATUS status;
u_int gen_count;
int retry;
ACPI_SERIAL_ASSERT(ec);
for (retry = 0; retry < 2; retry++) {
status = EcCommand(sc, EC_COMMAND_READ);
if (ACPI_FAILURE(status))
return (status);
gen_count = sc->ec_gencount;
EC_SET_DATA(sc, Address);
status = EcWaitEvent(sc, EC_EVENT_OUTPUT_BUFFER_FULL, gen_count);
if (ACPI_FAILURE(status)) {
if (EcCheckStatus(sc, "retr_check",
EC_EVENT_INPUT_BUFFER_EMPTY) == AE_OK)
continue;
else
break;
}
*Data = EC_GET_DATA(sc);
return (AE_OK);
}
device_printf(sc->ec_dev, "EcRead: failed waiting to get data\n");
return (status);
}
static ACPI_STATUS
EcRead(struct acpi_ec_softc *sc, UINT8 Address, UINT8 *Data)
{
ACPI_STATUS Status;
if (!EcIsLocked(sc))
ACPI_VPRINT(sc->ec_dev, acpi_device_get_parent_softc(sc->ec_dev),
"EcRead called without EC lock!\n");
/*EcBurstEnable(EmbeddedController);*/
EC_SET_CSR(sc, EC_COMMAND_READ);
if (ACPI_FAILURE(Status = EcWaitEventIntr(sc, EC_EVENT_INPUT_BUFFER_EMPTY))) {
ACPI_VPRINT(sc->ec_dev, acpi_device_get_parent_softc(sc->ec_dev),
"EcRead: Failed waiting for EC to process read command.\n");
return(Status);
}
EC_SET_DATA(sc, Address);
if (ACPI_FAILURE(Status = EcWaitEventIntr(sc, EC_EVENT_OUTPUT_BUFFER_FULL))) {
ACPI_VPRINT(sc->ec_dev, acpi_device_get_parent_softc(sc->ec_dev),
"EcRead: Failed waiting for EC to send data.\n");
return(Status);
}
(*Data) = EC_GET_DATA(sc);
/*EcBurstDisable(EmbeddedController);*/
return(AE_OK);
}