isci: uplevel phy infrastructure

Merge core/scic_sds_phy.[ch] into phy.[ch]

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 2210 insertions, 3 deletions

diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c
index 1134395c970e..b92d51f25481 100644
--- a/drivers/scsi/isci/phy.c
+++ b/drivers/scsi/isci/phy.c
@@ -56,12 +56,2219 @@
 #include "isci.h"
 #include "host.h"
 #include "phy.h"
+#include "scu_event_codes.h"
 #include "scic_port.h"
 #include "scic_config_parameters.h"
+#include "timers.h"
 
-struct scic_sds_phy;
-extern enum sci_status scic_sds_phy_start(struct scic_sds_phy *sci_phy);
-extern enum sci_status scic_sds_phy_stop(struct scic_sds_phy *sci_phy);
+/* Maximum arbitration wait time in micro-seconds */
+#define SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME  (700)
+
+enum sas_linkrate sci_phy_linkrate(struct scic_sds_phy *sci_phy)
+{
+	return sci_phy->max_negotiated_speed;
+}
+
+/*
+ * *****************************************************************************
+ * * SCIC SDS PHY Internal Methods
+ * ***************************************************************************** */
+
+/**
+ * This method will initialize the phy transport layer registers
+ * @sci_phy:
+ * @transport_layer_registers
+ *
+ * enum sci_status
+ */
+static enum sci_status scic_sds_phy_transport_layer_initialization(
+	struct scic_sds_phy *sci_phy,
+	struct scu_transport_layer_registers __iomem *transport_layer_registers)
+{
+	u32 tl_control;
+
+	sci_phy->transport_layer_registers = transport_layer_registers;
+
+	writel(SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX,
+		&sci_phy->transport_layer_registers->stp_rni);
+
+	/*
+	 * Hardware team recommends that we enable the STP prefetch for all
+	 * transports
+	 */
+	tl_control = readl(&sci_phy->transport_layer_registers->control);
+	tl_control |= SCU_TLCR_GEN_BIT(STP_WRITE_DATA_PREFETCH);
+	writel(tl_control, &sci_phy->transport_layer_registers->control);
+
+	return SCI_SUCCESS;
+}
+
+/**
+ * This method will initialize the phy link layer registers
+ * @sci_phy:
+ * @link_layer_registers:
+ *
+ * enum sci_status
+ */
+static enum sci_status
+scic_sds_phy_link_layer_initialization(struct scic_sds_phy *sci_phy,
+				       struct scu_link_layer_registers __iomem *link_layer_registers)
+{
+	struct scic_sds_controller *scic =
+		sci_phy->owning_port->owning_controller;
+	int phy_idx = sci_phy->phy_index;
+	struct sci_phy_user_params *phy_user =
+		&scic->user_parameters.sds1.phys[phy_idx];
+	struct sci_phy_oem_params *phy_oem =
+		&scic->oem_parameters.sds1.phys[phy_idx];
+	u32 phy_configuration;
+	struct scic_phy_cap phy_cap;
+	u32 parity_check = 0;
+	u32 parity_count = 0;
+	u32 llctl, link_rate;
+	u32 clksm_value = 0;
+
+	sci_phy->link_layer_registers = link_layer_registers;
+
+	/* Set our IDENTIFY frame data */
+	#define SCI_END_DEVICE 0x01
+
+	writel(SCU_SAS_TIID_GEN_BIT(SMP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(SSP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(STP_INITIATOR) |
+	       SCU_SAS_TIID_GEN_BIT(DA_SATA_HOST) |
+	       SCU_SAS_TIID_GEN_VAL(DEVICE_TYPE, SCI_END_DEVICE),
+	       &sci_phy->link_layer_registers->transmit_identification);
+
+	/* Write the device SAS Address */
+	writel(0xFEDCBA98,
+	       &sci_phy->link_layer_registers->sas_device_name_high);
+	writel(phy_idx, &sci_phy->link_layer_registers->sas_device_name_low);
+
+	/* Write the source SAS Address */
+	writel(phy_oem->sas_address.high,
+		&sci_phy->link_layer_registers->source_sas_address_high);
+	writel(phy_oem->sas_address.low,
+		&sci_phy->link_layer_registers->source_sas_address_low);
+
+	/* Clear and Set the PHY Identifier */
+	writel(0, &sci_phy->link_layer_registers->identify_frame_phy_id);
+	writel(SCU_SAS_TIPID_GEN_VALUE(ID, phy_idx),
+		&sci_phy->link_layer_registers->identify_frame_phy_id);
+
+	/* Change the initial state of the phy configuration register */
+	phy_configuration =
+		readl(&sci_phy->link_layer_registers->phy_configuration);
+
+	/* Hold OOB state machine in reset */
+	phy_configuration |=  SCU_SAS_PCFG_GEN_BIT(OOB_RESET);
+	writel(phy_configuration,
+		&sci_phy->link_layer_registers->phy_configuration);
+
+	/* Configure the SNW capabilities */
+	phy_cap.all = 0;
+	phy_cap.start = 1;
+	phy_cap.gen3_no_ssc = 1;
+	phy_cap.gen2_no_ssc = 1;
+	phy_cap.gen1_no_ssc = 1;
+	if (scic->oem_parameters.sds1.controller.do_enable_ssc == true) {
+		phy_cap.gen3_ssc = 1;
+		phy_cap.gen2_ssc = 1;
+		phy_cap.gen1_ssc = 1;
+	}
+
+	/*
+	 * The SAS specification indicates that the phy_capabilities that
+	 * are transmitted shall have an even parity.  Calculate the parity. */
+	parity_check = phy_cap.all;
+	while (parity_check != 0) {
+		if (parity_check & 0x1)
+			parity_count++;
+		parity_check >>= 1;
+	}
+
+	/*
+	 * If parity indicates there are an odd number of bits set, then
+	 * set the parity bit to 1 in the phy capabilities. */
+	if ((parity_count % 2) != 0)
+		phy_cap.parity = 1;
+
+	writel(phy_cap.all, &sci_phy->link_layer_registers->phy_capabilities);
+
+	/* Set the enable spinup period but disable the ability to send
+	 * notify enable spinup
+	 */
+	writel(SCU_ENSPINUP_GEN_VAL(COUNT,
+			phy_user->notify_enable_spin_up_insertion_frequency),
+		&sci_phy->link_layer_registers->notify_enable_spinup_control);
+
+	/* Write the ALIGN Insertion Ferequency for connected phy and
+	 * inpendent of connected state
+	 */
+	clksm_value = SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(CONNECTED,
+			phy_user->in_connection_align_insertion_frequency);
+
+	clksm_value |= SCU_ALIGN_INSERTION_FREQUENCY_GEN_VAL(GENERAL,
+			phy_user->align_insertion_frequency);
+
+	writel(clksm_value, &sci_phy->link_layer_registers->clock_skew_management);
+
+	/* @todo Provide a way to write this register correctly */
+	writel(0x02108421,
+		&sci_phy->link_layer_registers->afe_lookup_table_control);
+
+	llctl = SCU_SAS_LLCTL_GEN_VAL(NO_OUTBOUND_TASK_TIMEOUT,
+		(u8)scic->user_parameters.sds1.no_outbound_task_timeout);
+
+	switch(phy_user->max_speed_generation) {
+	case SCIC_SDS_PARM_GEN3_SPEED:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN3;
+		break;
+	case SCIC_SDS_PARM_GEN2_SPEED:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN2;
+		break;
+	default:
+		link_rate = SCU_SAS_LINK_LAYER_CONTROL_MAX_LINK_RATE_GEN1;
+		break;
+	}
+	llctl |= SCU_SAS_LLCTL_GEN_VAL(MAX_LINK_RATE, link_rate);
+	writel(llctl, &sci_phy->link_layer_registers->link_layer_control);
+
+	if (is_a0() || is_a2()) {
+		/* Program the max ARB time for the PHY to 700us so we inter-operate with
+		 * the PMC expander which shuts down PHYs if the expander PHY generates too
+		 * many breaks.  This time value will guarantee that the initiator PHY will
+		 * generate the break.
+		 */
+		writel(SCIC_SDS_PHY_MAX_ARBITRATION_WAIT_TIME,
+			&sci_phy->link_layer_registers->maximum_arbitration_wait_timer_timeout);
+	}
+
+	/*
+	 * Set the link layer hang detection to 500ms (0x1F4) from its default
+	 * value of 128ms.  Max value is 511 ms.
+	 */
+	writel(0x1F4, &sci_phy->link_layer_registers->link_layer_hang_detection_timeout);
+
+	/* We can exit the initial state to the stopped state */
+	sci_base_state_machine_change_state(&sci_phy->state_machine,
+					    SCI_BASE_PHY_STATE_STOPPED);
+
+	return SCI_SUCCESS;
+}
+
+/**
+ * This function will handle the sata SIGNATURE FIS timeout condition.  It will
+ * restart the starting substate machine since we dont know what has actually
+ * happening.
+ */
+static void scic_sds_phy_sata_timeout(void *phy)
+{
+	struct scic_sds_phy *sci_phy = phy;
+
+	dev_dbg(sciphy_to_dev(sci_phy),
+		 "%s: SCIC SDS Phy 0x%p did not receive signature fis before "
+		 "timeout.\n",
+		 __func__,
+		 sci_phy);
+
+	sci_base_state_machine_stop(&sci_phy->starting_substate_machine);
+
+	sci_base_state_machine_change_state(&sci_phy->state_machine,
+					    SCI_BASE_PHY_STATE_STARTING);
+}
+
+/**
+ * This method returns the port currently containing this phy. If the phy is
+ *    currently contained by the dummy port, then the phy is considered to not
+ *    be part of a port.
+ * @sci_phy: This parameter specifies the phy for which to retrieve the
+ *    containing port.
+ *
+ * This method returns a handle to a port that contains the supplied phy.
+ * NULL This value is returned if the phy is not part of a real
+ * port (i.e. it's contained in the dummy port). !NULL All other
+ * values indicate a handle/pointer to the port containing the phy.
+ */
+struct scic_sds_port *scic_sds_phy_get_port(
+	struct scic_sds_phy *sci_phy)
+{
+	if (scic_sds_port_get_index(sci_phy->owning_port) == SCIC_SDS_DUMMY_PORT)
+		return NULL;
+
+	return sci_phy->owning_port;
+}
+
+/**
+ * This method will assign a port to the phy object.
+ * @out]: sci_phy This parameter specifies the phy for which to assign a port
+ *    object.
+ *
+ *
+ */
+void scic_sds_phy_set_port(
+	struct scic_sds_phy *sci_phy,
+	struct scic_sds_port *sci_port)
+{
+	sci_phy->owning_port = sci_port;
+
+	if (sci_phy->bcn_received_while_port_unassigned) {
+		sci_phy->bcn_received_while_port_unassigned = false;
+		scic_sds_port_broadcast_change_received(sci_phy->owning_port, sci_phy);
+	}
+}
+
+/**
+ * This method will initialize the constructed phy
+ * @sci_phy:
+ * @link_layer_registers:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_phy_initialize(
+	struct scic_sds_phy *sci_phy,
+	struct scu_transport_layer_registers __iomem *transport_layer_registers,
+	struct scu_link_layer_registers __iomem *link_layer_registers)
+{
+	struct scic_sds_controller *scic = scic_sds_phy_get_controller(sci_phy);
+	struct isci_host *ihost = scic_to_ihost(scic);
+
+	/* Create the SIGNATURE FIS Timeout timer for this phy */
+	sci_phy->sata_timeout_timer =
+		isci_timer_create(
+			ihost,
+			sci_phy,
+			scic_sds_phy_sata_timeout);
+
+	/* Perfrom the initialization of the TL hardware */
+	scic_sds_phy_transport_layer_initialization(
+			sci_phy,
+			transport_layer_registers);
+
+	/* Perofrm the initialization of the PE hardware */
+	scic_sds_phy_link_layer_initialization(sci_phy, link_layer_registers);
+
+	/*
+	 * There is nothing that needs to be done in this state just
+	 * transition to the stopped state. */
+	sci_base_state_machine_change_state(&sci_phy->state_machine,
+					    SCI_BASE_PHY_STATE_STOPPED);
+
+	return SCI_SUCCESS;
+}
+
+/**
+ * This method assigns the direct attached device ID for this phy.
+ *
+ * @sci_phy The phy for which the direct attached device id is to
+ *       be assigned.
+ * @device_id The direct attached device ID to assign to the phy.
+ *       This will either be the RNi for the device or an invalid RNi if there
+ *       is no current device assigned to the phy.
+ */
+void scic_sds_phy_setup_transport(
+	struct scic_sds_phy *sci_phy,
+	u32 device_id)
+{
+	u32 tl_control;
+
+	writel(device_id, &sci_phy->transport_layer_registers->stp_rni);
+
+	/*
+	 * The read should guarantee that the first write gets posted
+	 * before the next write
+	 */
+	tl_control = readl(&sci_phy->transport_layer_registers->control);
+	tl_control |= SCU_TLCR_GEN_BIT(CLEAR_TCI_NCQ_MAPPING_TABLE);
+	writel(tl_control, &sci_phy->transport_layer_registers->control);
+}
+
+/**
+ *
+ * @sci_phy: The phy object to be suspended.
+ *
+ * This function will perform the register reads/writes to suspend the SCU
+ * hardware protocol engine. none
+ */
+static void scic_sds_phy_suspend(
+	struct scic_sds_phy *sci_phy)
+{
+	u32 scu_sas_pcfg_value;
+
+	scu_sas_pcfg_value =
+		readl(&sci_phy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value |= SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE);
+	writel(scu_sas_pcfg_value,
+		&sci_phy->link_layer_registers->phy_configuration);
+
+	scic_sds_phy_setup_transport(
+			sci_phy,
+			SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX);
+}
+
+void scic_sds_phy_resume(struct scic_sds_phy *sci_phy)
+{
+	u32 scu_sas_pcfg_value;
+
+	scu_sas_pcfg_value =
+		readl(&sci_phy->link_layer_registers->phy_configuration);
+	scu_sas_pcfg_value &= ~SCU_SAS_PCFG_GEN_BIT(SUSPEND_PROTOCOL_ENGINE);
+	writel(scu_sas_pcfg_value,
+		&sci_phy->link_layer_registers->phy_configuration);
+}
+
+void scic_sds_phy_get_sas_address(struct scic_sds_phy *sci_phy,
+				  struct sci_sas_address *sas_address)
+{
+	sas_address->high = readl(&sci_phy->link_layer_registers->source_sas_address_high);
+	sas_address->low = readl(&sci_phy->link_layer_registers->source_sas_address_low);
+}
+
+void scic_sds_phy_get_attached_sas_address(struct scic_sds_phy *sci_phy,
+					   struct sci_sas_address *sas_address)
+{
+	struct sas_identify_frame *iaf;
+	struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
+
+	iaf = &iphy->frame_rcvd.iaf;
+	memcpy(sas_address, iaf->sas_addr, SAS_ADDR_SIZE);
+}
+
+void scic_sds_phy_get_protocols(struct scic_sds_phy *sci_phy,
+				struct scic_phy_proto *protocols)
+{
+	protocols->all =
+		(u16)(readl(&sci_phy->
+			link_layer_registers->transmit_identification) &
+				0x0000FFFF);
+}
+
+/**
+ * This method will attempt to start the phy object. This request is only valid
+ *    when the phy is in the stopped state
+ * @sci_phy:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_phy_start(struct scic_sds_phy *sci_phy)
+{
+	return sci_phy->state_handlers->start_handler(sci_phy);
+}
+
+/**
+ * This method will attempt to stop the phy object.
+ * @sci_phy:
+ *
+ * enum sci_status SCI_SUCCESS if the phy is going to stop SCI_INVALID_STATE
+ * if the phy is not in a valid state to stop
+ */
+enum sci_status scic_sds_phy_stop(struct scic_sds_phy *sci_phy)
+{
+	return sci_phy->state_handlers->stop_handler(sci_phy);
+}
+
+/**
+ * This method will attempt to reset the phy.  This request is only valid when
+ *    the phy is in an ready state
+ * @sci_phy:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_phy_reset(
+	struct scic_sds_phy *sci_phy)
+{
+	return sci_phy->state_handlers->reset_handler(sci_phy);
+}
+
+/**
+ * This method will process the event code received.
+ * @sci_phy:
+ * @event_code:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_phy_event_handler(
+	struct scic_sds_phy *sci_phy,
+	u32 event_code)
+{
+	return sci_phy->state_handlers->event_handler(sci_phy, event_code);
+}
+
+/**
+ * This method will process the frame index received.
+ * @sci_phy:
+ * @frame_index:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_phy_frame_handler(
+	struct scic_sds_phy *sci_phy,
+	u32 frame_index)
+{
+	return sci_phy->state_handlers->frame_handler(sci_phy, frame_index);
+}
+
+/**
+ * This method will give the phy permission to consume power
+ * @sci_phy:
+ *
+ * enum sci_status
+ */
+enum sci_status scic_sds_phy_consume_power_handler(
+	struct scic_sds_phy *sci_phy)
+{
+	return sci_phy->state_handlers->consume_power_handler(sci_phy);
+}
+
+/*
+ * *****************************************************************************
+ * * SCIC SDS PHY HELPER FUNCTIONS
+ * ***************************************************************************** */
+
+
+/**
+ *
+ * @sci_phy: The phy object that received SAS PHY DETECTED.
+ *
+ * This method continues the link training for the phy as if it were a SAS PHY
+ * instead of a SATA PHY. This is done because the completion queue had a SAS
+ * PHY DETECTED event when the state machine was expecting a SATA PHY event.
+ * none
+ */
+static void scic_sds_phy_start_sas_link_training(
+	struct scic_sds_phy *sci_phy)
+{
+	u32 phy_control;
+
+	phy_control =
+		readl(&sci_phy->link_layer_registers->phy_configuration);
+	phy_control |= SCU_SAS_PCFG_GEN_BIT(SATA_SPINUP_HOLD);
+	writel(phy_control,
+		&sci_phy->link_layer_registers->phy_configuration);
+
+	sci_base_state_machine_change_state(
+		&sci_phy->starting_substate_machine,
+		SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_SPEED_EN
+		);
+
+	sci_phy->protocol = SCIC_SDS_PHY_PROTOCOL_SAS;
+}
+
+/**
+ *
+ * @sci_phy: The phy object that received a SATA SPINUP HOLD event
+ *
+ * This method continues the link training for the phy as if it were a SATA PHY
+ * instead of a SAS PHY.  This is done because the completion queue had a SATA
+ * SPINUP HOLD event when the state machine was expecting a SAS PHY event. none
+ */
+static void scic_sds_phy_start_sata_link_training(
+	struct scic_sds_phy *sci_phy)
+{
+	sci_base_state_machine_change_state(
+		&sci_phy->starting_substate_machine,
+		SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER
+		);
+
+	sci_phy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA;
+}
+
+/**
+ * scic_sds_phy_complete_link_training - perform processing common to
+ *    all protocols upon completion of link training.
+ * @sci_phy: This parameter specifies the phy object for which link training
+ *    has completed.
+ * @max_link_rate: This parameter specifies the maximum link rate to be
+ *    associated with this phy.
+ * @next_state: This parameter specifies the next state for the phy's starting
+ *    sub-state machine.
+ *
+ */
+static void scic_sds_phy_complete_link_training(
+	struct scic_sds_phy *sci_phy,
+	enum sas_linkrate max_link_rate,
+	u32 next_state)
+{
+	sci_phy->max_negotiated_speed = max_link_rate;
+
+	sci_base_state_machine_change_state(&sci_phy->starting_substate_machine,
+					    next_state);
+}
+
+static void scic_sds_phy_restart_starting_state(
+	struct scic_sds_phy *sci_phy)
+{
+	/* Stop the current substate machine */
+	sci_base_state_machine_stop(&sci_phy->starting_substate_machine);
+
+	/* Re-enter the base state machine starting state */
+	sci_base_state_machine_change_state(&sci_phy->state_machine,
+					    SCI_BASE_PHY_STATE_STARTING);
+}
+
+/* ****************************************************************************
+   * SCIC SDS PHY general handlers
+   ************************************************************************** */
+static enum sci_status scic_sds_phy_starting_substate_general_stop_handler(
+	struct scic_sds_phy *phy)
+{
+	sci_base_state_machine_stop(&phy->starting_substate_machine);
+
+	sci_base_state_machine_change_state(&phy->state_machine,
+						 SCI_BASE_PHY_STATE_STOPPED);
+
+	return SCI_SUCCESS;
+}
+
+/*
+ * *****************************************************************************
+ * * SCIC SDS PHY EVENT_HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @phy: This struct scic_sds_phy object which has received an event.
+ * @event_code: This is the event code which the phy object is to decode.
+ *
+ * This method is called when an event notification is received for the phy
+ * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SPEED_EN. -
+ * decode the event - sas phy detected causes a state transition to the wait
+ * for speed event notification. - any other events log a warning message and
+ * set a failure status enum sci_status SCI_SUCCESS on any valid event notification
+ * SCI_FAILURE on any unexpected event notifation
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_ossp_event_handler(
+	struct scic_sds_phy *sci_phy,
+	u32 event_code)
+{
+	u32 result = SCI_SUCCESS;
+
+	switch (scu_get_event_code(event_code)) {
+	case SCU_EVENT_SAS_PHY_DETECTED:
+		scic_sds_phy_start_sas_link_training(sci_phy);
+		sci_phy->is_in_link_training = true;
+		break;
+
+	case SCU_EVENT_SATA_SPINUP_HOLD:
+		scic_sds_phy_start_sata_link_training(sci_phy);
+		sci_phy->is_in_link_training = true;
+		break;
+
+	default:
+		dev_dbg(sciphy_to_dev(sci_phy),
+			"%s: PHY starting substate machine received "
+			"unexpected event_code %x\n",
+			__func__,
+			event_code);
+
+		result = SCI_FAILURE;
+		break;
+	}
+
+	return result;
+}
+
+/**
+ *
+ * @phy: This struct scic_sds_phy object which has received an event.
+ * @event_code: This is the event code which the phy object is to decode.
+ *
+ * This method is called when an event notification is received for the phy
+ * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SPEED_EN. -
+ * decode the event - sas phy detected returns us back to this state. - speed
+ * event detected causes a state transition to the wait for iaf. - identify
+ * timeout is an un-expected event and the state machine is restarted. - link
+ * failure events restart the starting state machine - any other events log a
+ * warning message and set a failure status enum sci_status SCI_SUCCESS on any valid
+ * event notification SCI_FAILURE on any unexpected event notifation
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_sas_phy_speed_event_handler(
+	struct scic_sds_phy *sci_phy,
+	u32 event_code)
+{
+	u32 result = SCI_SUCCESS;
+
+	switch (scu_get_event_code(event_code)) {
+	case SCU_EVENT_SAS_PHY_DETECTED:
+		/*
+		 * Why is this being reported again by the controller?
+		 * We would re-enter this state so just stay here */
+		break;
+
+	case SCU_EVENT_SAS_15:
+	case SCU_EVENT_SAS_15_SSC:
+		scic_sds_phy_complete_link_training(
+			sci_phy,
+			SAS_LINK_RATE_1_5_GBPS,
+			SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF);
+		break;
+
+	case SCU_EVENT_SAS_30:
+	case SCU_EVENT_SAS_30_SSC:
+		scic_sds_phy_complete_link_training(
+			sci_phy,
+			SAS_LINK_RATE_3_0_GBPS,
+			SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF);
+		break;
+
+	case SCU_EVENT_SAS_60:
+	case SCU_EVENT_SAS_60_SSC:
+		scic_sds_phy_complete_link_training(
+			sci_phy,
+			SAS_LINK_RATE_6_0_GBPS,
+			SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF);
+		break;
+
+	case SCU_EVENT_SATA_SPINUP_HOLD:
+		/*
+		 * We were doing SAS PHY link training and received a SATA PHY event
+		 * continue OOB/SN as if this were a SATA PHY */
+		scic_sds_phy_start_sata_link_training(sci_phy);
+		break;
+
+	case SCU_EVENT_LINK_FAILURE:
+		/* Link failure change state back to the starting state */
+		scic_sds_phy_restart_starting_state(sci_phy);
+		break;
+
+	default:
+		dev_warn(sciphy_to_dev(sci_phy),
+			 "%s: PHY starting substate machine received "
+			 "unexpected event_code %x\n",
+			 __func__,
+			 event_code);
+
+		result = SCI_FAILURE;
+		break;
+	}
+
+	return result;
+}
+
+/**
+ *
+ * @phy: This struct scic_sds_phy object which has received an event.
+ * @event_code: This is the event code which the phy object is to decode.
+ *
+ * This method is called when an event notification is received for the phy
+ * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF. -
+ * decode the event - sas phy detected event backs up the state machine to the
+ * await speed notification. - identify timeout is an un-expected event and the
+ * state machine is restarted. - link failure events restart the starting state
+ * machine - any other events log a warning message and set a failure status
+ * enum sci_status SCI_SUCCESS on any valid event notification SCI_FAILURE on any
+ * unexpected event notifation
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_iaf_uf_event_handler(
+	struct scic_sds_phy *sci_phy,
+	u32 event_code)
+{
+	u32 result = SCI_SUCCESS;
+
+	switch (scu_get_event_code(event_code)) {
+	case SCU_EVENT_SAS_PHY_DETECTED:
+		/* Backup the state machine */
+		scic_sds_phy_start_sas_link_training(sci_phy);
+		break;
+
+	case SCU_EVENT_SATA_SPINUP_HOLD:
+		/*
+		 * We were doing SAS PHY link training and received a SATA PHY event
+		 * continue OOB/SN as if this were a SATA PHY */
+		scic_sds_phy_start_sata_link_training(sci_phy);
+		break;
+
+	case SCU_EVENT_RECEIVED_IDENTIFY_TIMEOUT:
+	case SCU_EVENT_LINK_FAILURE:
+	case SCU_EVENT_HARD_RESET_RECEIVED:
+		/* Start the oob/sn state machine over again */
+		scic_sds_phy_restart_starting_state(sci_phy);
+		break;
+
+	default:
+		dev_warn(sciphy_to_dev(sci_phy),
+			 "%s: PHY starting substate machine received "
+			 "unexpected event_code %x\n",
+			 __func__,
+			 event_code);
+
+		result = SCI_FAILURE;
+		break;
+	}
+
+	return result;
+}
+
+/**
+ *
+ * @phy: This struct scic_sds_phy object which has received an event.
+ * @event_code: This is the event code which the phy object is to decode.
+ *
+ * This method is called when an event notification is received for the phy
+ * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_POWER. -
+ * decode the event - link failure events restart the starting state machine -
+ * any other events log a warning message and set a failure status enum sci_status
+ * SCI_SUCCESS on a link failure event SCI_FAILURE on any unexpected event
+ * notifation
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_sas_power_event_handler(
+	struct scic_sds_phy *sci_phy,
+	u32 event_code)
+{
+	u32 result = SCI_SUCCESS;
+
+	switch (scu_get_event_code(event_code)) {
+	case SCU_EVENT_LINK_FAILURE:
+		/* Link failure change state back to the starting state */
+		scic_sds_phy_restart_starting_state(sci_phy);
+		break;
+
+	default:
+		dev_warn(sciphy_to_dev(sci_phy),
+			"%s: PHY starting substate machine received unexpected "
+			"event_code %x\n",
+			__func__,
+			event_code);
+
+		result = SCI_FAILURE;
+		break;
+	}
+
+	return result;
+}
+
+/**
+ *
+ * @phy: This struct scic_sds_phy object which has received an event.
+ * @event_code: This is the event code which the phy object is to decode.
+ *
+ * This method is called when an event notification is received for the phy
+ * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_POWER. -
+ * decode the event - link failure events restart the starting state machine -
+ * sata spinup hold events are ignored since they are expected - any other
+ * events log a warning message and set a failure status enum sci_status SCI_SUCCESS
+ * on a link failure event SCI_FAILURE on any unexpected event notifation
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_sata_power_event_handler(
+	struct scic_sds_phy *sci_phy,
+	u32 event_code)
+{
+	u32 result = SCI_SUCCESS;
+
+	switch (scu_get_event_code(event_code)) {
+	case SCU_EVENT_LINK_FAILURE:
+		/* Link failure change state back to the starting state */
+		scic_sds_phy_restart_starting_state(sci_phy);
+		break;
+
+	case SCU_EVENT_SATA_SPINUP_HOLD:
+		/* These events are received every 10ms and are expected while in this state */
+		break;
+
+	case SCU_EVENT_SAS_PHY_DETECTED:
+		/*
+		 * There has been a change in the phy type before OOB/SN for the
+		 * SATA finished start down the SAS link traning path. */
+		scic_sds_phy_start_sas_link_training(sci_phy);
+		break;
+
+	default:
+		dev_warn(sciphy_to_dev(sci_phy),
+			 "%s: PHY starting substate machine received "
+			 "unexpected event_code %x\n",
+			 __func__,
+			 event_code);
+
+		result = SCI_FAILURE;
+		break;
+	}
+
+	return result;
+}
+
+/**
+ * scic_sds_phy_starting_substate_await_sata_phy_event_handler -
+ * @phy: This struct scic_sds_phy object which has received an event.
+ * @event_code: This is the event code which the phy object is to decode.
+ *
+ * This method is called when an event notification is received for the phy
+ * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_PHY_EN. -
+ * decode the event - link failure events restart the starting state machine -
+ * sata spinup hold events are ignored since they are expected - sata phy
+ * detected event change to the wait speed event - any other events log a
+ * warning message and set a failure status enum sci_status SCI_SUCCESS on a link
+ * failure event SCI_FAILURE on any unexpected event notifation
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_sata_phy_event_handler(
+	struct scic_sds_phy *sci_phy, u32 event_code)
+{
+	u32 result = SCI_SUCCESS;
+
+	switch (scu_get_event_code(event_code)) {
+	case SCU_EVENT_LINK_FAILURE:
+		/* Link failure change state back to the starting state */
+		scic_sds_phy_restart_starting_state(sci_phy);
+		break;
+
+	case SCU_EVENT_SATA_SPINUP_HOLD:
+		/* These events might be received since we dont know how many may be in
+		 * the completion queue while waiting for power
+		 */
+		break;
+
+	case SCU_EVENT_SATA_PHY_DETECTED:
+		sci_phy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA;
+
+		/* We have received the SATA PHY notification change state */
+		sci_base_state_machine_change_state(&sci_phy->starting_substate_machine,
+						    SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN);
+		break;
+
+	case SCU_EVENT_SAS_PHY_DETECTED:
+		/* There has been a change in the phy type before OOB/SN for the
+		 * SATA finished start down the SAS link traning path.
+		 */
+		scic_sds_phy_start_sas_link_training(sci_phy);
+		break;
+
+	default:
+		dev_warn(sciphy_to_dev(sci_phy),
+			 "%s: PHY starting substate machine received "
+			 "unexpected event_code %x\n",
+			 __func__,
+			 event_code);
+
+		result = SCI_FAILURE;
+		break;
+	}
+
+	return result;
+}
+
+/**
+ *
+ * @phy: This struct scic_sds_phy object which has received an event.
+ * @event_code: This is the event code which the phy object is to decode.
+ *
+ * This method is called when an event notification is received for the phy
+ * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN.
+ * - decode the event - sata phy detected returns us back to this state. -
+ * speed event detected causes a state transition to the wait for signature. -
+ * link failure events restart the starting state machine - any other events
+ * log a warning message and set a failure status enum sci_status SCI_SUCCESS on any
+ * valid event notification SCI_FAILURE on any unexpected event notifation
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_sata_speed_event_handler(
+	struct scic_sds_phy *sci_phy,
+	u32 event_code)
+{
+	u32 result = SCI_SUCCESS;
+
+	switch (scu_get_event_code(event_code)) {
+	case SCU_EVENT_SATA_PHY_DETECTED:
+		/*
+		 * The hardware reports multiple SATA PHY detected events
+		 * ignore the extras */
+		break;
+
+	case SCU_EVENT_SATA_15:
+	case SCU_EVENT_SATA_15_SSC:
+		scic_sds_phy_complete_link_training(
+			sci_phy,
+			SAS_LINK_RATE_1_5_GBPS,
+			SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF);
+		break;
+
+	case SCU_EVENT_SATA_30:
+	case SCU_EVENT_SATA_30_SSC:
+		scic_sds_phy_complete_link_training(
+			sci_phy,
+			SAS_LINK_RATE_3_0_GBPS,
+			SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF);
+		break;
+
+	case SCU_EVENT_SATA_60:
+	case SCU_EVENT_SATA_60_SSC:
+		scic_sds_phy_complete_link_training(
+			sci_phy,
+			SAS_LINK_RATE_6_0_GBPS,
+			SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF);
+		break;
+
+	case SCU_EVENT_LINK_FAILURE:
+		/* Link failure change state back to the starting state */
+		scic_sds_phy_restart_starting_state(sci_phy);
+		break;
+
+	case SCU_EVENT_SAS_PHY_DETECTED:
+		/*
+		 * There has been a change in the phy type before OOB/SN for the
+		 * SATA finished start down the SAS link traning path. */
+		scic_sds_phy_start_sas_link_training(sci_phy);
+		break;
+
+	default:
+		dev_warn(sciphy_to_dev(sci_phy),
+			 "%s: PHY starting substate machine received "
+			 "unexpected event_code %x\n",
+			 __func__,
+			 event_code);
+
+		result = SCI_FAILURE;
+		break;
+	}
+
+	return result;
+}
+
+/**
+ * scic_sds_phy_starting_substate_await_sig_fis_event_handler -
+ * @phy: This struct scic_sds_phy object which has received an event.
+ * @event_code: This is the event code which the phy object is to decode.
+ *
+ * This method is called when an event notification is received for the phy
+ * object when in the state SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SIG_FIS_UF. -
+ * decode the event - sas phy detected event backs up the state machine to the
+ * await speed notification. - identify timeout is an un-expected event and the
+ * state machine is restarted. - link failure events restart the starting state
+ * machine - any other events log a warning message and set a failure status
+ * enum sci_status SCI_SUCCESS on any valid event notification SCI_FAILURE on any
+ * unexpected event notifation
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_sig_fis_event_handler(
+	struct scic_sds_phy *sci_phy, u32 event_code)
+{
+	u32 result = SCI_SUCCESS;
+
+	switch (scu_get_event_code(event_code)) {
+	case SCU_EVENT_SATA_PHY_DETECTED:
+		/* Backup the state machine */
+		sci_base_state_machine_change_state(&sci_phy->starting_substate_machine,
+						    SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SATA_SPEED_EN);
+		break;
+
+	case SCU_EVENT_LINK_FAILURE:
+		/* Link failure change state back to the starting state */
+		scic_sds_phy_restart_starting_state(sci_phy);
+		break;
+
+	default:
+		dev_warn(sciphy_to_dev(sci_phy),
+			 "%s: PHY starting substate machine received "
+			 "unexpected event_code %x\n",
+			 __func__,
+			 event_code);
+
+		result = SCI_FAILURE;
+		break;
+	}
+
+	return result;
+}
+
+
+/*
+ * *****************************************************************************
+ * *  SCIC SDS PHY FRAME_HANDLERS
+ * ***************************************************************************** */
+
+/**
+ *
+ * @phy: This is struct scic_sds_phy object which is being requested to decode the
+ *    frame data.
+ * @frame_index: This is the index of the unsolicited frame which was received
+ *    for this phy.
+ *
+ * This method decodes the unsolicited frame when the struct scic_sds_phy is in the
+ * SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_IAF_UF. - Get the UF Header - If the UF
+ * is an IAF - Copy IAF data to local phy object IAF data buffer. - Change
+ * starting substate to wait power. - else - log warning message of unexpected
+ * unsolicted frame - release frame buffer enum sci_status SCI_SUCCESS
+ */
+static enum sci_status scic_sds_phy_starting_substate_await_iaf_uf_frame_handler(
+	struct scic_sds_phy *sci_phy, u32 frame_index)
+{
+	enum sci_status result;
+	u32 *frame_words;
+	struct sas_identify_frame iaf;
+	struct isci_phy *iphy = sci_phy_to_iphy(sci_phy);
+
+	result = scic_sds_unsolicited_frame_control_get_header(
+		&(scic_sds_phy_get_controller(sci_phy)->uf_control),
+		frame_index,
+		(void **)&frame_words);
+
+	if (result != SCI_SUCCESS)
+		return result;
+
+	sci_swab32_cpy(&iaf, frame_words, sizeof(iaf) / sizeof(u32));
+	if (iaf.frame_type == 0) {
+		u32 state;
+
+		memcpy(&iphy->frame_rcvd.iaf, &iaf, sizeof(iaf));
+		if (iaf.smp_tport) {
+			/* We got the IAF for an expander PHY go to the final
+			 * state since there are no power requirements for
+			 * expander phys.
+			 */
+			state = SCIC_SDS_PHY_STARTING_SUBSTATE_FINAL;
+		} else {
+			/* We got the IAF we can now go to the await spinup
+			 * semaphore state
+			 */
+			state = SCIC_SDS_PHY_STARTING_SUBSTATE_AWAIT_SAS_POWER;
+		}
+		sci_base_state_machine_change_state(
+				&sci_phy->starting_substate_machine,
+				state);
+		result = SCI_SUCCESS;
+	} else
+		dev_warn(sciphy_to_dev(sci_phy),
+			"%s: