VOID
PortBusChangeProcess (
_In_ PAHCI_CHANNEL_EXTENSION ChannelExtension
)
{
AHCI_SERIAL_ATA_CONTROL sctl;
STOR_LOCK_HANDLE lockhandle = {0};
//1 if link speed was limited, restore the supported value.
sctl.AsUlong = StorPortReadRegisterUlong(ChannelExtension->AdapterExtension, &ChannelExtension->Px->SCTL.AsUlong);
if ( (sctl.SPD != 0) &&
(sctl.SPD != ChannelExtension->AdapterExtension->CAP.ISS) ) {
sctl.SPD = 0; //AHCI 3.3.11 --- 0h No speed negotiation restrictions
StorPortWriteRegisterUlong(ChannelExtension->AdapterExtension, &ChannelExtension->Px->SCTL.AsUlong, sctl.AsUlong);
}
//2 Kicks off the Start Channel state machine
StorPortAcquireSpinLock(ChannelExtension->AdapterExtension, InterruptLock, NULL, &lockhandle);
AhciPortReset(ChannelExtension, TRUE); // all requests should be completed
StorPortReleaseSpinLock(ChannelExtension->AdapterExtension, &lockhandle);
//3 Requests rescan on this port, ignore the return status of this API. Using STATE_CHANGE_TARGET to make sure a REPORT LUNS command coming from Storport.
StorPortStateChangeDetected(ChannelExtension->AdapterExtension,
STATE_CHANGE_TARGET,
(PSTOR_ADDRESS)&ChannelExtension->DeviceExtension[0].DeviceAddress,
0,
AhciBusChangeCallback,
NULL);
PortReleaseActiveReference(ChannelExtension, NULL);
}
VOID
PortBusChangeProcess (
_In_ PAHCI_CHANNEL_EXTENSION ChannelExtension
)
{
AHCI_SERIAL_ATA_CONTROL sctl;
STOR_LOCK_HANDLE lockhandle = {0};
ULONG status = STOR_STATUS_UNSUCCESSFUL;
//1 if link speed was limited, restore the supported value.
sctl.AsUlong = StorPortReadRegisterUlong(ChannelExtension->AdapterExtension, &ChannelExtension->Px->SCTL.AsUlong);
if ( (sctl.SPD != 0) &&
(sctl.SPD != ChannelExtension->AdapterExtension->CAP.ISS) ) {
sctl.SPD = 0; //AHCI 3.3.11 --- 0h No speed negotiation restrictions
StorPortWriteRegisterUlong(ChannelExtension->AdapterExtension, &ChannelExtension->Px->SCTL.AsUlong, sctl.AsUlong);
}
//2 Kicks off the Start Channel state machine
AhciInterruptSpinlockAcquire(ChannelExtension->AdapterExtension, ChannelExtension->PortNumber, &lockhandle);
AhciPortReset(ChannelExtension, TRUE); // all requests should be completed
AhciInterruptSpinlockRelease(ChannelExtension->AdapterExtension, ChannelExtension->PortNumber, &lockhandle);
//3 Requests rescan on this port. Using STATE_CHANGE_TARGET to make sure a REPORT LUNS command coming from Storport.
status = StorPortStateChangeDetected(ChannelExtension->AdapterExtension,
STATE_CHANGE_TARGET,
(PSTOR_ADDRESS)&ChannelExtension->DeviceExtension[0].DeviceAddress,
0,
AhciBusChangeCallback,
NULL);
// if the state change notification fails, set a timer to retry the notification after a delay
if (status == STOR_STATUS_UNSUCCESSFUL) {
if (ChannelExtension->BusChangeTimer == NULL) {
StorPortInitializeTimer(ChannelExtension->AdapterExtension, &ChannelExtension->BusChangeTimer);
}
status = StorPortRequestTimer(ChannelExtension->AdapterExtension,
ChannelExtension->BusChangeTimer,
AhciBusChangeTimerCallback,
ChannelExtension,
100000, // 100 milliseconds
0);
if ( status != STOR_STATUS_SUCCESS ) {
PortReleaseActiveReference(ChannelExtension, NULL);
}
} else {
if (ChannelExtension->BusChangeTimer != NULL) {
StorPortFreeTimer(ChannelExtension->AdapterExtension, ChannelExtension->BusChangeTimer);
ChannelExtension->BusChangeTimer = NULL;
}
PortReleaseActiveReference(ChannelExtension, NULL);
}
}
