isci: unify isci_host data structures

Make it explicit that isci_host and scic_sds_controller are one in the same
object.

Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>
[removed ->ihost back pointer]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

18 files changed, 83 insertions, 163 deletions

diff --git a/drivers/scsi/isci/core/scic_sds_controller.c b/drivers/scsi/isci/core/scic_sds_controller.c
index 3fe73cbc0524..ea510411460c 100644
--- a/drivers/scsi/isci/core/scic_sds_controller.c
+++ b/drivers/scsi/isci/core/scic_sds_controller.c
@@ -214,7 +214,7 @@ static void scic_sds_controller_power_control_timer_handler(
 
 static void scic_sds_controller_initialize_power_control(struct scic_sds_controller *scic)
 {
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	scic->power_control.timer = isci_timer_create(ihost,
 						      scic,
 					scic_sds_controller_power_control_timer_handler);
@@ -585,7 +585,7 @@ static void scic_sds_controller_transition_to_ready(
 	struct scic_sds_controller *scic,
 	enum sci_status status)
 {
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 
 	if (scic->state_machine.current_state_id ==
 	    SCI_BASE_CONTROLLER_STATE_STARTING) {
@@ -603,7 +603,7 @@ static void scic_sds_controller_transition_to_ready(
 static void scic_sds_controller_timeout_handler(void *_scic)
 {
 	struct scic_sds_controller *scic = _scic;
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	struct sci_base_state_machine *sm = &scic->state_machine;
 
 	if (sm->current_state_id == SCI_BASE_CONTROLLER_STATE_STARTING)
@@ -771,7 +771,7 @@ static void scic_sds_controller_phy_startup_timeout_handler(void *_scic)
 
 static enum sci_status scic_sds_controller_initialize_phy_startup(struct scic_sds_controller *scic)
 {
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 
 	scic->phy_startup_timer = isci_timer_create(ihost,
 						    scic,
@@ -1775,7 +1775,7 @@ void scic_sds_controller_release_frame(
  */
 static void scic_sds_controller_set_default_config_parameters(struct scic_sds_controller *scic)
 {
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	u16 index;
 
 	/* Default to APC mode. */
@@ -2619,17 +2619,12 @@ static enum sci_status scic_controller_set_interrupt_coalescence(
 }
 
 
-struct scic_sds_controller *scic_controller_alloc(struct device *dev)
-{
-	return devm_kzalloc(dev, sizeof(struct scic_sds_controller), GFP_KERNEL);
-}
 
-enum sci_status scic_controller_initialize(
-	struct scic_sds_controller *scic)
+enum sci_status scic_controller_initialize(struct scic_sds_controller *scic)
 {
 	struct sci_base_state_machine *sm = &scic->state_machine;
 	enum sci_status result = SCI_SUCCESS;
-	struct isci_host *ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	u32 index, state;
 
 	if (scic->state_machine.current_state_id !=
@@ -2640,9 +2635,6 @@ enum sci_status scic_controller_initialize(
 		return SCI_FAILURE_INVALID_STATE;
 	}
 
-
-	ihost = scic->ihost;
-
 	sci_base_state_machine_change_state(sm, SCI_BASE_CONTROLLER_STATE_INITIALIZING);
 
 	scic->timeout_timer = isci_timer_create(ihost,
diff --git a/drivers/scsi/isci/core/scic_sds_controller.h b/drivers/scsi/isci/core/scic_sds_controller.h
index 08aee06c124d..0a9bb8b77256 100644
--- a/drivers/scsi/isci/core/scic_sds_controller.h
+++ b/drivers/scsi/isci/core/scic_sds_controller.h
@@ -125,7 +125,6 @@ struct scic_power_control {
 
 };
 
-struct isci_host;
 /**
  * struct scic_sds_controller -
  *
@@ -133,11 +132,6 @@ struct isci_host;
  */
 struct scic_sds_controller {
 	/**
-	 * The field specifies that the peer object for the controller.
-	 */
-	struct isci_host *ihost;
-
-	/**
 	 * This field contains the information for the base controller state
 	 * machine.
 	 */
diff --git a/drivers/scsi/isci/core/scic_sds_phy.c b/drivers/scsi/isci/core/scic_sds_phy.c
index 18dc14a8f0ba..8f1e3db6bb2e 100644
--- a/drivers/scsi/isci/core/scic_sds_phy.c
+++ b/drivers/scsi/isci/core/scic_sds_phy.c
@@ -339,7 +339,7 @@ enum sci_status scic_sds_phy_initialize(
 	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->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 
 	/* Create the SIGNATURE FIS Timeout timer for this phy */
 	sci_phy->sata_timeout_timer =
@@ -1790,7 +1790,7 @@ scic_sds_phy_stopped_state_start_handler(struct scic_sds_phy *sci_phy)
 	struct scic_sds_controller *scic;
 
 	scic = scic_sds_phy_get_controller(sci_phy),
-	ihost = scic->ihost;
+	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,
@@ -2076,7 +2076,7 @@ static void scic_sds_phy_stopped_state_enter(void *object)
 {
 	struct scic_sds_phy *sci_phy = object;
 	struct scic_sds_controller *scic = scic_sds_phy_get_controller(sci_phy);
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 
 	/*
 	 * @todo We need to get to the controller to place this PE in a
diff --git a/drivers/scsi/isci/core/scic_sds_port.c b/drivers/scsi/isci/core/scic_sds_port.c
index 0c89fc1c09f8..04a56c5a68d9 100644
--- a/drivers/scsi/isci/core/scic_sds_port.c
+++ b/drivers/scsi/isci/core/scic_sds_port.c
@@ -625,7 +625,7 @@ static void scic_sds_port_activate_phy(struct scic_sds_port *sci_port,
 				       bool do_notify_user)
 {
 	struct scic_sds_controller *scic = sci_port->owning_controller;
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 
 	if (sci_phy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA)
 		scic_sds_phy_resume(sci_phy);
@@ -644,7 +644,7 @@ void scic_sds_port_deactivate_phy(struct scic_sds_port *sci_port,
 {
 	struct scic_sds_controller *scic = scic_sds_port_get_controller(sci_port);
 	struct isci_port *iport = sci_port->iport;
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	struct isci_phy *iphy = sci_phy->iphy;
 
 	sci_port->active_phy_mask &= ~(1 << sci_phy->phy_index);
@@ -667,12 +667,10 @@ void scic_sds_port_deactivate_phy(struct scic_sds_port *sci_port,
  * This function will disable the phy and report that the phy is not valid for
  * this port object. None
  */
-static void scic_sds_port_invalid_link_up(
-	struct scic_sds_port *sci_port,
-	struct scic_sds_phy *sci_phy)
+static void scic_sds_port_invalid_link_up(struct scic_sds_port *sci_port,
+					  struct scic_sds_phy *sci_phy)
 {
-	struct scic_sds_controller *scic =
-		scic_sds_port_get_controller(sci_port);
+	struct scic_sds_controller *scic = sci_port->owning_controller;
 
 	/*
 	 * Check to see if we have alreay reported this link as bad and if
@@ -681,7 +679,7 @@ static void scic_sds_port_invalid_link_up(
 	 */
 	if ((scic->invalid_phy_mask & (1 << sci_phy->phy_index)) == 0) {
 		scic_sds_controller_set_invalid_phy(scic, sci_phy);
-		isci_port_invalid_link_up(scic, sci_port, sci_phy);
+		dev_warn(&scic_to_ihost(scic)->pdev->dev, "Invalid link up!\n");
 	}
 }
 
@@ -971,7 +969,7 @@ void scic_sds_port_broadcast_change_received(
 	struct scic_sds_phy *sci_phy)
 {
 	struct scic_sds_controller *scic = sci_port->owning_controller;
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 
 	/* notify the user. */
 	isci_port_bc_change_received(ihost, sci_port, sci_phy);
@@ -1625,7 +1623,7 @@ static void scic_sds_port_ready_substate_operational_enter(void *object)
 	struct scic_sds_port *sci_port = object;
 	struct scic_sds_controller *scic =
 		scic_sds_port_get_controller(sci_port);
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	struct isci_port *iport = sci_port->iport;
 
 	scic_sds_port_set_ready_state_handlers(
@@ -1666,7 +1664,7 @@ static void scic_sds_port_ready_substate_operational_exit(void *object)
 	struct scic_sds_port *sci_port = object;
 	struct scic_sds_controller *scic =
 		scic_sds_port_get_controller(sci_port);
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	struct isci_port *iport = sci_port->iport;
 
 	/*
@@ -1697,7 +1695,7 @@ static void scic_sds_port_ready_substate_configuring_enter(void *object)
 	struct scic_sds_port *sci_port = object;
 	struct scic_sds_controller *scic =
 		scic_sds_port_get_controller(sci_port);
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	struct isci_port *iport = sci_port->iport;
 
 	scic_sds_port_set_ready_state_handlers(
@@ -1784,7 +1782,7 @@ static enum sci_status
 scic_sds_port_stopped_state_start_handler(struct scic_sds_port *sci_port)
 {
 	struct scic_sds_controller *scic = sci_port->owning_controller;
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	enum sci_status status = SCI_SUCCESS;
 	u32 phy_mask;
 
@@ -2259,16 +2257,12 @@ static void scic_sds_port_stopped_state_exit(void *object)
  */
 static void scic_sds_port_ready_state_enter(void *object)
 {
-	struct scic_sds_controller *scic;
 	struct scic_sds_port *sci_port = object;
-	struct isci_port *iport;
-	struct isci_host *ihost;
+	struct scic_sds_controller *scic = sci_port->owning_controller;
+	struct isci_host *ihost = scic_to_ihost(scic);
+	struct isci_port *iport = sci_port->iport;
 	u32 prev_state;
 
-	scic = scic_sds_port_get_controller(sci_port);
-	ihost = scic->ihost;
-	iport = sci_port->iport;
-
 	/* Put the ready state handlers in place though they will not be there long */
 	scic_sds_port_set_base_state_handlers(sci_port, SCI_BASE_PORT_STATE_READY);
 
diff --git a/drivers/scsi/isci/core/scic_sds_port_configuration_agent.c b/drivers/scsi/isci/core/scic_sds_port_configuration_agent.c
index df257ffa0f84..6b1f4a0ad990 100644
--- a/drivers/scsi/isci/core/scic_sds_port_configuration_agent.c
+++ b/drivers/scsi/isci/core/scic_sds_port_configuration_agent.c
@@ -808,20 +808,13 @@ void scic_sds_port_configuration_agent_construct(
 	}
 }
 
-/**
- *
- * @controller: This is the controller object for which the port agent is being
- *    initialized.
- *
- * This method will construct the port configuration agent for this controller.
- */
 enum sci_status scic_sds_port_configuration_agent_initialize(
 	struct scic_sds_controller *scic,
 	struct scic_sds_port_configuration_agent *port_agent)
 {
 	enum sci_status status = SCI_SUCCESS;
 	enum scic_port_configuration_mode mode;
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 
 	mode = scic->oem_parameters.sds1.controller.mode_type;
 
diff --git a/drivers/scsi/isci/core/scic_sds_request.c b/drivers/scsi/isci/core/scic_sds_request.c
index 85e40ce96e96..6286decd62e5 100644
--- a/drivers/scsi/isci/core/scic_sds_request.c
+++ b/drivers/scsi/isci/core/scic_sds_request.c
@@ -1545,7 +1545,7 @@ static void scic_sds_request_completed_state_enter(void *object)
 	struct scic_sds_request *sci_req = object;
 	struct scic_sds_controller *scic =
 		scic_sds_request_get_controller(sci_req);
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	struct isci_request *ireq = sci_req->ireq;
 
 	SET_STATE_HANDLER(sci_req,
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
index 55bfa3dbfb8f..d180ad8a8bcf 100644
--- a/drivers/scsi/isci/host.c
+++ b/drivers/scsi/isci/host.c
@@ -65,9 +65,8 @@
 irqreturn_t isci_msix_isr(int vec, void *data)
 {
 	struct isci_host *ihost = data;
-	struct scic_sds_controller *scic = ihost->core_controller;
 
-	if (scic_sds_controller_isr(scic))
+	if (scic_sds_controller_isr(&ihost->sci))
 		tasklet_schedule(&ihost->completion_tasklet);
 
 	return IRQ_HANDLED;
@@ -77,7 +76,7 @@ irqreturn_t isci_intx_isr(int vec, void *data)
 {
 	irqreturn_t ret = IRQ_NONE;
 	struct isci_host *ihost = data;
-	struct scic_sds_controller *scic = ihost->core_controller;
+	struct scic_sds_controller *scic = &ihost->sci;
 
 	if (scic_sds_controller_isr(scic)) {
 		writel(SMU_ISR_COMPLETION, &scic->smu_registers->interrupt_status);
@@ -96,10 +95,9 @@ irqreturn_t isci_intx_isr(int vec, void *data)
 irqreturn_t isci_error_isr(int vec, void *data)
 {
 	struct isci_host *ihost = data;
-	struct scic_sds_controller *scic = ihost->core_controller;
 
-	if (scic_sds_controller_error_isr(scic))
-		scic_sds_controller_error_handler(scic);
+	if (scic_sds_controller_error_isr(&ihost->sci))
+		scic_sds_controller_error_handler(&ihost->sci);
 
 	return IRQ_HANDLED;
 }
@@ -145,21 +143,20 @@ int isci_host_scan_finished(struct Scsi_Host *shost, unsigned long time)
 void isci_host_scan_start(struct Scsi_Host *shost)
 {
 	struct isci_host *ihost = SHOST_TO_SAS_HA(shost)->lldd_ha;
-	struct scic_sds_controller *scic = ihost->core_controller;
-	unsigned long tmo = scic_controller_get_suggested_start_timeout(scic);
+	unsigned long tmo = scic_controller_get_suggested_start_timeout(&ihost->sci);
 
 	set_bit(IHOST_START_PENDING, &ihost->flags);
 
 	spin_lock_irq(&ihost->scic_lock);
-	scic_controller_start(scic, tmo);
-	scic_controller_enable_interrupts(scic);
+	scic_controller_start(&ihost->sci, tmo);
+	scic_controller_enable_interrupts(&ihost->sci);
 	spin_unlock_irq(&ihost->scic_lock);
 }
 
 void isci_host_stop_complete(struct isci_host *ihost, enum sci_status completion_status)
 {
 	isci_host_change_state(ihost, isci_stopped);
-	scic_controller_disable_interrupts(ihost->core_controller);
+	scic_controller_disable_interrupts(&ihost->sci);
 	clear_bit(IHOST_STOP_PENDING, &ihost->flags);
 	wake_up(&ihost->eventq);
 }
@@ -188,7 +185,7 @@ static void isci_host_completion_routine(unsigned long data)
 
 	spin_lock_irq(&isci_host->scic_lock);
 
-	scic_sds_controller_completion_handler(isci_host->core_controller);
+	scic_sds_controller_completion_handler(&isci_host->sci);
 
 	/* Take the lists of completed I/Os from the host. */
 
@@ -276,7 +273,6 @@ static void isci_host_completion_routine(unsigned long data)
 
 void isci_host_deinit(struct isci_host *ihost)
 {
-	struct scic_sds_controller *scic = ihost->core_controller;
 	int i;
 
 	isci_host_change_state(ihost, isci_stopping);
@@ -293,11 +289,11 @@ void isci_host_deinit(struct isci_host *ihost)
 	set_bit(IHOST_STOP_PENDING, &ihost->flags);
 
 	spin_lock_irq(&ihost->scic_lock);
-	scic_controller_stop(scic, SCIC_CONTROLLER_STOP_TIMEOUT);
+	scic_controller_stop(&ihost->sci, SCIC_CONTROLLER_STOP_TIMEOUT);
 	spin_unlock_irq(&ihost->scic_lock);
 
 	wait_for_stop(ihost);
-	scic_controller_reset(scic);
+	scic_controller_reset(&ihost->sci);
 	isci_timer_list_destroy(ihost);
 }
 
@@ -347,25 +343,12 @@ int isci_host_init(struct isci_host *isci_host)
 {
 	int err = 0, i;
 	enum sci_status status;
-	struct scic_sds_controller *controller;
 	union scic_oem_parameters oem;
 	union scic_user_parameters scic_user_params;
 	struct isci_pci_info *pci_info = to_pci_info(isci_host->pdev);
 
 	isci_timer_list_construct(isci_host);
 
-	controller = scic_controller_alloc(&isci_host->pdev->dev);
-
-	if (!controller) {
-		dev_err(&isci_host->pdev->dev,
-			"%s: failed (%d)\n",
-			__func__,
-			err);
-		return -ENOMEM;
-	}
-
-	isci_host->core_controller = controller;
-	controller->ihost = isci_host;
 	spin_lock_init(&isci_host->state_lock);
 	spin_lock_init(&isci_host->scic_lock);
 	spin_lock_init(&isci_host->queue_lock);
@@ -374,7 +357,7 @@ int isci_host_init(struct isci_host *isci_host)
 	isci_host_change_state(isci_host, isci_starting);
 	isci_host->can_queue = ISCI_CAN_QUEUE_VAL;
 
-	status = scic_controller_construct(controller, scu_base(isci_host),
+	status = scic_controller_construct(&isci_host->sci, scu_base(isci_host),
 					   smu_base(isci_host));
 
 	if (status != SCI_SUCCESS) {
@@ -393,7 +376,7 @@ int isci_host_init(struct isci_host *isci_host)
 	 * parameters
 	 */
 	isci_user_parameters_get(isci_host, &scic_user_params);
-	status = scic_user_parameters_set(isci_host->core_controller,
+	status = scic_user_parameters_set(&isci_host->sci,
 					  &scic_user_params);
 	if (status != SCI_SUCCESS) {
 		dev_warn(&isci_host->pdev->dev,
@@ -402,7 +385,7 @@ int isci_host_init(struct isci_host *isci_host)
 		return -ENODEV;
 	}
 
-	scic_oem_parameters_get(controller, &oem);
+	scic_oem_parameters_get(&isci_host->sci, &oem);
 
 	/* grab any OEM parameters specified in orom */
 	if (pci_info->orom) {
@@ -416,7 +399,7 @@ int isci_host_init(struct isci_host *isci_host)
 		}
 	}
 
-	status = scic_oem_parameters_set(isci_host->core_controller, &oem);
+	status = scic_oem_parameters_set(&isci_host->sci, &oem);
 	if (status != SCI_SUCCESS) {
 		dev_warn(&isci_host->pdev->dev,
 				"%s: scic_oem_parameters_set failed\n",
@@ -431,7 +414,7 @@ int isci_host_init(struct isci_host *isci_host)
 	INIT_LIST_HEAD(&isci_host->requests_to_errorback);
 
 	spin_lock_irq(&isci_host->scic_lock);
-	status = scic_controller_initialize(isci_host->core_controller);
+	status = scic_controller_initialize(&isci_host->sci);
 	spin_unlock_irq(&isci_host->scic_lock);
 	if (status != SCI_SUCCESS) {
 		dev_warn(&isci_host->pdev->dev,
@@ -441,7 +424,7 @@ int isci_host_init(struct isci_host *isci_host)
 		return -ENODEV;
 	}
 
-	err = scic_controller_mem_init(isci_host->core_controller);
+	err = scic_controller_mem_init(&isci_host->sci);
 	if (err)
 		return err;
 
diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h
index 8dc8d1c46986..00e4854e20d9 100644
--- a/drivers/scsi/isci/host.h
+++ b/drivers/scsi/isci/host.h
@@ -58,7 +58,7 @@
 #define _SCI_HOST_H_
 
 #include "phy.h"
-/*#include "task.h"*/
+#include "scic_sds_controller.h"
 #include "timers.h"
 #include "remote_device.h"
 
@@ -75,7 +75,7 @@
 #define SCIC_CONTROLLER_STOP_TIMEOUT 5000
 
 struct isci_host {
-	struct scic_sds_controller *core_controller;
+	struct scic_sds_controller sci;
 	union scic_oem_parameters oem_parameters;
 
 	int id; /* unique within a given pci device */
@@ -219,6 +219,14 @@ static inline struct isci_host *dev_to_ihost(struct domain_device *dev)
 	return dev->port->ha->lldd_ha;
 }
 
+static inline struct isci_host *scic_to_ihost(struct scic_sds_controller *scic)
+{
+	/* XXX delete after merging scic_sds_contoller and isci_host */
+	struct isci_host *ihost = container_of(scic, typeof(*ihost), sci);
+
+	return ihost;
+}
+
 /**
  * isci_host_scan_finished() -
  *
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index 6c2d686fe7c0..a5d5c0b97d00 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -268,7 +268,7 @@ static void isci_unregister(struct isci_host *isci_host)
 
 static int __devinit isci_pci_init(struct pci_dev *pdev)
 {
-	int err, bar_num, bar_mask;
+	int err, bar_num, bar_mask = 0;
 	void __iomem * const *iomap;
 
 	err = pcim_enable_device(pdev);
@@ -556,7 +556,7 @@ static void __devexit isci_pci_remove(struct pci_dev *pdev)
 	for_each_isci_host(i, isci_host, pdev) {
 		isci_unregister(isci_host);
 		isci_host_deinit(isci_host);
-		scic_controller_disable_interrupts(isci_host->core_controller);
+		scic_controller_disable_interrupts(&isci_host->sci);
 	}
 }
 
diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c
index a690b6b664f7..160790a0de0e 100644
--- a/drivers/scsi/isci/phy.c
+++ b/drivers/scsi/isci/phy.c
@@ -79,7 +79,6 @@ void isci_phy_init(
 	struct isci_host *isci_host,
 	int index)
 {
-	struct scic_sds_controller *scic = isci_host->core_controller;
 	struct scic_sds_phy *scic_phy;
 	union scic_oem_parameters oem;
 	enum sci_status status = SCI_SUCCESS;
@@ -87,7 +86,7 @@ void isci_phy_init(
 
 	/*--------------- SCU_Phy Initialization Stuff -----------------------*/
 
-	status = scic_controller_get_phy_handle(scic, index, &scic_phy);
+	status = scic_controller_get_phy_handle(&isci_host->sci, index, &scic_phy);
 	if (status == SCI_SUCCESS) {
 		phy->sci_phy_handle = scic_phy;
 		scic_phy->iphy = phy;
@@ -95,7 +94,7 @@ void isci_phy_init(
 		dev_err(&isci_host->pdev->dev,
 			"failed scic_controller_get_phy_handle\n");
 
-	scic_oem_parameters_get(scic, &oem);
+	scic_oem_parameters_get(&isci_host->sci, &oem);
 	sas_addr = oem.sds1.phys[index].sas_address.high;
 	sas_addr <<= 32;
 	sas_addr |= oem.sds1.phys[index].sas_address.low;
diff --git a/drivers/scsi/isci/phy.h b/drivers/scsi/isci/phy.h
index d4c4975546e3..21f6050eadbe 100644
--- a/drivers/scsi/isci/phy.h
+++ b/drivers/scsi/isci/phy.h
@@ -85,8 +85,6 @@ struct isci_phy {
 #define to_isci_phy(p)	\
 	container_of(p, struct isci_phy, sas_phy);
 
-struct isci_host;
-
 void isci_phy_init(
 	struct isci_phy *phy,
 	struct isci_host *isci_host,
diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c
index 2decafbeb968..8d96a10341b1 100644
--- a/drivers/scsi/isci/port.c
+++ b/drivers/scsi/isci/port.c
@@ -90,7 +90,6 @@ void isci_port_init(
 	int index)
 {
 	struct scic_sds_port *scic_port;
-	struct scic_sds_controller *controller = isci_host->core_controller;
 
 	INIT_LIST_HEAD(&isci_port->remote_dev_list);
 	INIT_LIST_HEAD(&isci_port->domain_dev_list);
@@ -99,7 +98,7 @@ void isci_port_init(
 	isci_port->isci_host = isci_host;
 	isci_port_change_state(isci_port, isci_freed);
 
-	(void)scic_controller_get_port_handle(controller, index, &scic_port);
+	(void)scic_controller_get_port_handle(&isci_host->sci, index, &scic_port);
 	isci_port->sci_port_handle = scic_port;
 	scic_port->iport = isci_port;
 }
@@ -415,33 +414,9 @@ int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *ipor
 	return ret;
 }
 
-/**
- * isci_port_invalid_link_up() - This function informs the SCI Core user that
- *    a phy/link became ready, but the phy is not allowed in the port.  In some
- *    situations the underlying hardware only allows for certain phy to port
- *    mappings.  If these mappings are violated, then this API is invoked.
- * @controller: This parameter represents the controller which contains the
- *    port.
- * @port: This parameter specifies the SCI port object for which the callback
- *    is being invoked.
- * @phy: This parameter specifies the phy that came ready, but the phy can't be
- *    a valid member of the port.
- *
- */
-void isci_port_invalid_link_up(struct scic_sds_controller *scic,
-				      struct scic_sds_port *sci_port,
-				      struct scic_sds_phy *phy)
-{
-	struct isci_host *ihost = scic->ihost;
-
-	dev_warn(&ihost->pdev->dev, "Invalid link up!\n");
-}
-
 void isci_port_stop_complete(struct scic_sds_controller *scic,
 					  struct scic_sds_port *sci_port,
 					  enum sci_status completion_status)
 {
-	struct isci_host *ihost = scic->ihost;
-
-	dev_dbg(&ihost->pdev->dev, "Port stop complete\n");
+	dev_dbg(&scic_to_ihost(scic)->pdev->dev, "Port stop complete\n");
 }
diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h
index eeac7bbc9430..ac1ac86ead6f 100644
--- a/drivers/scsi/isci/port.h
+++ b/drivers/scsi/isci/port.h
@@ -147,11 +147,6 @@ void isci_port_hard_reset_complete(
 int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport,
 				 struct isci_phy *iphy);
 
-void isci_port_invalid_link_up(
-		struct scic_sds_controller *scic,
-		struct scic_sds_port *sci_port,
-		struct scic_sds_phy *phy);
-
 void isci_port_stop_complete(
 		struct scic_sds_controller *scic,
 		struct scic_sds_port *sci_port,
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c
index ee6fe1db8f99..734d028448b0 100644
--- a/drivers/scsi/isci/remote_device.c
+++ b/drivers/scsi/isci/remote_device.c
@@ -815,7 +815,7 @@ static void scic_sds_stp_remote_device_ready_idle_substate_resume_complete_handl
 	 * As a result, avoid sending the ready notification.
 	 */
 	if (sci_dev->state_machine.previous_state_id != SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ)
-		isci_remote_device_ready(scic->ihost, idev);
+		isci_remote_device_ready(scic_to_ihost(scic), idev);
 }
 
 static void scic_sds_remote_device_initial_state_enter(void *object)
@@ -918,21 +918,16 @@ static void isci_remote_device_stop_complete(struct isci_host *ihost,
 static void scic_sds_remote_device_stopped_state_enter(void *object)
 {
 	struct scic_sds_remote_device *sci_dev = object;
-	struct scic_sds_controller *scic;
-	struct isci_remote_device *idev;
-	struct isci_host *ihost;
+	struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller;
+	struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
 	u32 prev_state;
 
-	scic = scic_sds_remote_device_get_controller(sci_dev);
-	ihost = scic->ihost;
-	idev = sci_dev_to_idev(sci_dev);
-
 	/* If we are entering from the stopping state let the SCI User know that
 	 * the stop operation has completed.
 	 */
 	prev_state = sci_dev->state_machine.previous_state_id;
 	if (prev_state == SCI_BASE_REMOTE_DEVICE_STATE_STOPPING)
-		isci_remote_device_stop_complete(ihost, idev);
+		isci_remote_device_stop_complete(scic_to_ihost(scic), idev);
 
 	scic_sds_controller_remote_device_stopped(scic, sci_dev);
 }
@@ -941,7 +936,7 @@ static void scic_sds_remote_device_starting_state_enter(void *object)
 {
 	struct scic_sds_remote_device *sci_dev = object;
 	struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
-	struct isci_host *ihost = scic->ihost;
+	struct isci_host *ihost = scic_to_ihost(scic);
 	struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
 
 	isci_remote_device_not_ready(ihost, idev,
@@ -952,7 +947,8 @@ static void scic_sds_remote_device_ready_state_enter(void *object)
 {
 	struct scic_sds_remote_device *sci_dev = object;
 	struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller;
-	struct domain_device *dev = sci_dev_to_domain(sci_dev);
+	struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
+	struct domain_device *dev = idev->domain_dev;
 
 	scic->remote_device_sequence[sci_dev->rnc.remote_node_index]++;
 
@@ -963,7 +959,7 @@ static void scic_sds_remote_device_ready_state_enter(void *object)
 		sci_base_state_machine_change_state(&sci_dev->state_machine,
 						    SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE);
 	} else
-		isci_remote_device_ready(scic->ihost, sci_dev_to_idev(sci_dev));
+		isci_remote_device_ready(scic_to_ihost(scic), idev);
 }
 
 static void scic_sds_remote_device_ready_state_exit(void *object)
@@ -975,7 +971,7 @@ static void scic_sds_remote_device_ready_state_exit(void *object)
 		struct scic_sds_controller *scic = sci_dev->owning_port->owning_controller;
 		struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
 
-		isci_remote_device_not_ready(scic->ihost, idev,
+		isci_remote_device_not_ready(scic_to_ihost(scic), idev,
 					     SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED);
 	}
 }
@@ -1019,7 +1015,7 @@ static void scic_sds_stp_remote_device_ready_cmd_substate_enter(void *object)
 
 	BUG_ON(sci_dev->working_request == NULL);
 
-	isci_remote_device_not_ready(scic->ihost, sci_dev_to_idev(sci_dev),
+	isci_remote_device_not_ready(scic_to_ihost(scic), sci_dev_to_idev(sci_dev),
 				     SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED);
 }
 
@@ -1030,7 +1026,7 @@ static void scic_sds_stp_remote_device_ready_ncq_error_substate_enter(void *obje
 	struct isci_remote_device *idev = sci_dev_to_idev(sci_dev);
 
 	if (sci_dev->not_ready_reason == SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED)
-		isci_remote_device_not_ready(scic->ihost, idev,
+		isci_remote_device_not_ready(scic_to_ihost(scic), idev,
 					     sci_dev->not_ready_reason);
 }
 
@@ -1039,7 +1035,7 @@ static void scic_sds_smp_remote_device_ready_idle_substate_enter(void *object)
 	struct scic_sds_remote_device *sci_dev = object;
 	struct scic_sds_controller *scic = scic_sds_remote_device_get_controller(sci_dev);
 
-	isci_remote_device_ready(scic->ihost, sci_dev_to_idev(sci_dev));
+	isci_remote_device_ready(scic_to_ihost(scic), sci_dev_to_idev(sci_dev));
 }
 
 static void scic_sds_smp_remote_device_ready_cmd_substate_enter(void *object)
@@ -1049,7 +1045,7 @@ static void scic_sds_smp_remote_device_ready_cmd_substate_enter(void *object)
 
 	BUG_ON(sci_dev->working_request == NULL);
 
-	isci_remote_device_not_ready(scic->ihost, sci_dev_to_idev(sci_dev),
+	isci_remote_device_not_ready(scic_to_ihost(scic), sci_dev_to_idev(sci_dev),
 				     SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED);
 }
 
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c
index 36adc1589efa..0521c045d43b 100644
--- a/drivers/scsi/isci/request.c
+++ b/drivers/scsi/isci/request.c
@@ -201,7 +201,7 @@ static enum sci_status isci_io_request_build(
 	 * we will let the core allocate the IO tag.
 	 */
 	status = scic_io_request_construct(
-		isci_host->core_controller,
+		&isci_host->sci,
 		sci_device,
 		SCI_CONTROLLER_INVALID_IO_TAG,
 		request,
@@ -394,7 +394,7 @@ int isci_request_execute(
 
 		/* send the request, let the core assign the IO TAG.	*/
 		status = scic_controller_start_io(
-			isci_host->core_controller,
+			&isci_host->sci,
 			sci_device,
 			request->sci_request_handle,
 			SCI_CONTROLLER_INVALID_IO_TAG
@@ -1186,7 +1186,7 @@ void isci_request_io_request_complete(
 						  );
 
 	/* complete the io request to the core. */
-	scic_controller_complete_io(isci_host->core_controller,
+	scic_controller_complete_io(&isci_host->sci,
 				    &isci_device->sci,
 				    request->sci_request_handle);
 	/* NULL the request handle so it cannot be completed or
diff --git a/drivers/scsi/isci/sci_environment.h b/drivers/scsi/isci/sci_environment.h
index 41636c34da9e..8394f60c5c2b 100644
--- a/drivers/scsi/isci/sci_environment.h
+++ b/drivers/scsi/isci/sci_environment.h
@@ -62,9 +62,7 @@
 
 static inline struct device *scic_to_dev(struct scic_sds_controller *scic)
 {
-	struct isci_host *isci_host = scic->ihost;
-
-	return &isci_host->pdev->dev;
+	return &scic_to_ihost(scic)->pdev->dev;
 }
 
 static inline struct device *sciphy_to_dev(struct scic_sds_phy *sci_phy)
diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c
index 3a3f54677e5b..cabad0b03ee5 100644
--- a/drivers/scsi/isci/task.c
+++ b/drivers/scsi/isci/task.c
@@ -299,7 +299,7 @@ static enum sci_status isci_task_request_build(
 
 	/* let the core do it's construct. */
 	status = scic_task_request_construct(
-		isci_host->core_controller,
+		&isci_host->sci,
 		sci_device,
 		SCI_CONTROLLER_INVALID_IO_TAG,
 		request,
@@ -378,7 +378,7 @@ static void isci_tmf_timeout_cb(void *tmf_request_arg)
 
 		/* Terminate the TMF transmit request. */
 		status = scic_controller_terminate_request(
-			request->isci_host->core_controller,
+			&request->isci_host->sci,
 			&request->isci_device->sci,
 			request->sci_request_handle
 			);
@@ -469,7 +469,7 @@ int isci_task_execute_tmf(
 
 	/* start the TMF io. */
 	status = scic_controller_start_task(
-		isci_host->core_controller,
+		&isci_host->sci,
 		sci_device,
 		request->sci_request_handle,
 		SCI_CONTROLLER_INVALID_IO_TAG
@@ -772,7 +772,7 @@ static void isci_terminate_request_core(
 		was_terminated = true;
 		needs_cleanup_handling = true;
 		status = scic_controller_terminate_request(
-			isci_host->core_controller,
+			&isci_host->sci,
 			&isci_device->sci,
 			isci_request->sci_request_handle);
 	}
@@ -1466,12 +1466,9 @@ isci_task_request_complete(struct isci_host *ihost,
 	/* PRINT_TMF( ((struct isci_tmf *)request->task)); */
 	tmf_complete = tmf->complete;
 
-	scic_controller_complete_io(ihost->core_controller,
-				    &idev->sci,
+	scic_controller_complete_io(&ihost->sci, &idev->sci,
 				    ireq->sci_request_handle);
-
-	/*
-	 * NULL the request handle to make sure it cannot be terminated
+	/* NULL the request handle to make sure it cannot be terminated
 	 *  or completed again.
 	 */
 	ireq->sci_request_handle = NULL;
diff --git a/drivers/scsi/isci/task.h b/drivers/scsi/isci/task.h
index aa2458658d1e..ecc5f1395063 100644
--- a/drivers/scsi/isci/task.h
+++ b/drivers/scsi/isci/task.h
@@ -52,14 +52,12 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
-
-#if !defined(_ISCI_TASK_H_)
+#ifndef _ISCI_TASK_H_
 #define _ISCI_TASK_H_
 
 #include <scsi/sas_ata.h>
 
 struct isci_request;
-struct isci_host;
 
 /**
  * enum isci_tmf_cb_state - This enum defines the possible states in which the