isci: move remote_device handling out of the core

Now that the core/lldd remote_device data structures are nominally unified
merge the corresponding sources into the top-level directory.  Also move the
remote_node_context infrastructure which has no analog at the lldd level.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 733 insertions, 9 deletions

diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h
index aeda39568a1c..9d8fcbf72ded 100644
--- a/drivers/scsi/isci/remote_device.h
+++ b/drivers/scsi/isci/remote_device.h
@@ -53,11 +53,127 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#if !defined(_ISCI_REMOTE_DEVICE_H_)
+#ifndef _ISCI_REMOTE_DEVICE_H_
 #define _ISCI_REMOTE_DEVICE_H_
-#include "scic_sds_remote_device.h"
+#include <scsi/libsas.h>
+#include "sci_status.h"
+#include "intel_sas.h"
+#include "scu_remote_node_context.h"
+#include "remote_node_context.h"
+#include "port.h"
 
-struct isci_host;
+enum scic_remote_device_not_ready_reason_code {
+        SCIC_REMOTE_DEVICE_NOT_READY_START_REQUESTED,
+        SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED,
+        SCIC_REMOTE_DEVICE_NOT_READY_SATA_REQUEST_STARTED,
+        SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED,
+        SCIC_REMOTE_DEVICE_NOT_READY_SMP_REQUEST_STARTED,
+
+        SCIC_REMOTE_DEVICE_NOT_READY_REASON_CODE_MAX
+
+};
+
+struct scic_sds_remote_device {
+        /**
+         * The field specifies that the parent object for the base remote
+         * device is the base object itself.
+         */
+        struct sci_base_object parent;
+
+        /**
+         * This field contains the information for the base remote device state
+         * machine.
+         */
+        struct sci_base_state_machine state_machine;
+
+        /**
+         * This field is the programmed device port width.  This value is
+         * written to the RCN data structure to tell the SCU how many open
+         * connections this device can have.
+         */
+        u32 device_port_width;
+
+        /**
+         * This field is the programmed connection rate for this remote device.  It is
+         * used to program the TC with the maximum allowed connection rate.
+         */
+        enum sas_linkrate connection_rate;
+
+        /**
+         * This field contains the allowed target protocols for this remote device.
+         */
+        struct smp_discover_response_protocols target_protocols;
+
+        /**
+         * This field contains the device SAS address.
+         */
+        struct sci_sas_address device_address;
+
+        /**
+         * This filed is assinged the value of true if the device is directly
+         * attached to the port.
+         */
+        bool is_direct_attached;
+
+#if !defined(DISABLE_ATAPI)
+        /**
+         * This filed is assinged the value of true if the device is an ATAPI
+         * device.
+         */
+        bool is_atapi;
+#endif
+
+        /**
+         * This filed contains a pointer back to the port to which this device
+         * is assigned.
+         */
+        struct scic_sds_port *owning_port;
+
+        /**
+         * This field contains the SCU silicon remote node context specific
+         * information.
+         */
+        struct scic_sds_remote_node_context rnc;
+
+        /**
+         * This field contains the stated request count for the remote device.  The
+         * device can not reach the SCI_BASE_REMOTE_DEVICE_STATE_STOPPED until all
+         * requests are complete and the rnc_posted value is false.
+         */
+        u32 started_request_count;
+
+        /**
+         * This field contains a pointer to the working request object.  It is only
+         * used only for SATA requests since the unsolicited frames we get from the
+         * hardware have no Tag value to look up the io request object.
+         */
+        struct scic_sds_request *working_request;
+
+        /**
+         * This field contains the reason for the remote device going not_ready.  It is
+         * assigned in the state handlers and used in the state transition.
+         */
+        u32 not_ready_reason;
+
+        /**
+         * This field is true if this remote device has an initialzied ready substate
+         * machine. SSP devices do not have a ready substate machine and STP devices
+         * have a ready substate machine.
+         */
+        bool has_ready_substate_machine;
+
+        /**
+         * This field contains the state machine for the ready substate machine for
+         * this struct scic_sds_remote_device object.
+         */
+        struct sci_base_state_machine ready_substate_machine;
+
+        /**
+         * This field maintains the set of state handlers for the remote device
+         * object.  These are changed each time the remote device enters a new state.
+         */
+        const struct scic_sds_remote_device_state_handler *state_handlers;
+};
 
 struct isci_remote_device {
         enum isci_status status;
@@ -75,12 +191,6 @@ struct isci_remote_device {
 
 #define ISCI_REMOTE_DEVICE_START_TIMEOUT 5000
 
-void isci_remote_device_start_complete(struct isci_host *ihost,
-                                       struct isci_remote_device *idev,
-                                       enum sci_status);
-void isci_remote_device_stop_complete(struct isci_host *ihost,
-                                      struct isci_remote_device *idev,
-                                      enum sci_status);
 enum sci_status isci_remote_device_stop(struct isci_host *ihost,
                                         struct isci_remote_device *idev);
 void isci_remote_device_nuke_requests(struct isci_host *ihost,
@@ -97,5 +207,619 @@ void isci_device_clear_reset_pending(struct isci_host *ihost,
                                      struct isci_remote_device *idev);
 void isci_remote_device_change_state(struct isci_remote_device *idev,
                                      enum isci_status status);
+/**
+ * scic_remote_device_stop() - This method will stop both transmission and
+ *    reception of link activity for the supplied remote device.  This method
+ *    disables normal IO requests from flowing through to the remote device.
+ * @remote_device: This parameter specifies the device to be stopped.
+ * @timeout: This parameter specifies the number of milliseconds in which the
+ *    stop operation should complete.
+ *
+ * An indication of whether the device was successfully stopped. SCI_SUCCESS
+ * This value is returned if the transmission and reception for the device was
+ * successfully stopped.
+ */
+enum sci_status scic_remote_device_stop(
+        struct scic_sds_remote_device *remote_device,
+        u32 timeout);
+
+/**
+ * scic_remote_device_reset() - This method will reset the device making it
+ *    ready for operation. This method must be called anytime the device is
+ *    reset either through a SMP phy control or a port hard reset request.
+ * @remote_device: This parameter specifies the device to be reset.
+ *
+ * This method does not actually cause the device hardware to be reset. This
+ * method resets the software object so that it will be operational after a
+ * device hardware reset completes. An indication of whether the device reset
+ * was accepted. SCI_SUCCESS This value is returned if the device reset is
+ * started.
+ */
+enum sci_status scic_remote_device_reset(
+        struct scic_sds_remote_device *remote_device);
+
+/**
+ * scic_remote_device_reset_complete() - This method informs the device object
+ *    that the reset operation is complete and the device can resume operation
+ *    again.
+ * @remote_device: This parameter specifies the device which is to be informed
+ *    of the reset complete operation.
+ *
+ * An indication that the device is resuming operation. SCI_SUCCESS the device
+ * is resuming operation.
+ */
+enum sci_status scic_remote_device_reset_complete(
+        struct scic_sds_remote_device *remote_device);
+
+
+
+/**
+ * scic_remote_device_get_connection_rate() - This method simply returns the
+ *    link rate at which communications to the remote device occur.
+ * @remote_device: This parameter specifies the device for which to get the
+ *    connection rate.
+ *
+ * Return the link rate at which we transfer for the supplied remote device.
+ */
+enum sas_linkrate scic_remote_device_get_connection_rate(
+        struct scic_sds_remote_device *remote_device);
+
+/**
+ * scic_remote_device_get_protocols() - This method will indicate which
+ *    protocols are supported by this remote device.
+ * @remote_device: This parameter specifies the device for which to return the
+ *    protocol.
+ * @protocols: This parameter specifies the output values, from the remote
+ *    device object, which indicate the protocols supported by the supplied
+ *    remote_device.
+ *
+ * The type of protocols supported by this device.  The values are returned as
+ * part of a bit mask in order to allow for multi-protocol support.
+ */
+void scic_remote_device_get_protocols(
+        struct scic_sds_remote_device *remote_device,
+        struct smp_discover_response_protocols *protocols);
+
+
+#if !defined(DISABLE_ATAPI)
+/**
+ * scic_remote_device_is_atapi() -
+ * @this_device: The device whose type is to be decided.
+ *
+ * This method first decide whether a device is a stp target, then decode the
+ * signature fis of a DA STP device to tell whether it is a standard end disk
+ * or an ATAPI device. bool Indicate a device is ATAPI device or not.
+ */
+bool scic_remote_device_is_atapi(
+        struct scic_sds_remote_device *device_handle);
+#else /* !defined(DISABLE_ATAPI) */
+#define scic_remote_device_is_atapi(device_handle) false
+#endif /* !defined(DISABLE_ATAPI) */
+
+
+
+/**
+ * enum scic_sds_remote_device_states - This enumeration depicts all the states
+ *    for the common remote device state machine.
+ *
+ *
+ */
+enum scic_sds_remote_device_states {
+        /**
+         * Simply the initial state for the base remote device state machine.
+         */
+        SCI_BASE_REMOTE_DEVICE_STATE_INITIAL,
+
+        /**
+         * This state indicates that the remote device has successfully been
+         * stopped.  In this state no new IO operations are permitted.
+         * This state is entered from the INITIAL state.
+         * This state is entered from the STOPPING state.
+         */
+        SCI_BASE_REMOTE_DEVICE_STATE_STOPPED,
+
+        /**
+         * This state indicates the the remote device is in the process of
+         * becoming ready (i.e. starting).  In this state no new IO operations
+         * are permitted.
+         * This state is entered from the STOPPED state.
+         */
+        SCI_BASE_REMOTE_DEVICE_STATE_STARTING,
+
+        /**
+         * This state indicates the remote device is now ready.  Thus, the user
+         * is able to perform IO operations on the remote device.
+         * This state is entered from the STARTING state.
+         */
+        SCI_BASE_REMOTE_DEVICE_STATE_READY,
+
+        /**
+         * This state indicates that the remote device is in the process of
+         * stopping.  In this state no new IO operations are permitted, but
+         * existing IO operations are allowed to complete.
+         * This state is entered from the READY state.
+         * This state is entered from the FAILED state.
+         */
+        SCI_BASE_REMOTE_DEVICE_STATE_STOPPING,
+
+        /**
+         * This state indicates that the remote device has failed.
+         * In this state no new IO operations are permitted.
+         * This state is entered from the INITIALIZING state.
+         * This state is entered from the READY state.
+         */
+        SCI_BASE_REMOTE_DEVICE_STATE_FAILED,
+
+        /**
+         * This state indicates the device is being reset.
+         * In this state no new IO operations are permitted.
+         * This state is entered from the READY state.
+         */
+        SCI_BASE_REMOTE_DEVICE_STATE_RESETTING,
+
+        /**
+         * Simply the final state for the base remote device state machine.
+         */
+        SCI_BASE_REMOTE_DEVICE_STATE_FINAL,
+};
+
+/**
+ * enum scic_sds_ssp_remote_device_ready_substates -
+ *
+ * This is the enumeration of the ready substates for the
+ * struct scic_sds_remote_device.
+ */
+enum scic_sds_ssp_remote_device_ready_substates {
+        /**
+         * This is the initial state for the remote device ready substate.
+         */
+        SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_INITIAL,
+
+        /**
+         * This is the ready operational substate for the remote device.
+         * This is the normal operational state for a remote device.
+         */
+        SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_OPERATIONAL,
+
+        /**
+         * This is the suspended state for the remote device. This is the state
+         * that the device is placed in when a RNC suspend is received by
+         * the SCU hardware.
+         */
+        SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_SUSPENDED,
+
+        /**
+         * This is the final state that the device is placed in before a change
+         * to the base state machine.
+         */
+        SCIC_SDS_SSP_REMOTE_DEVICE_READY_SUBSTATE_FINAL,
+
+        SCIC_SDS_SSP_REMOTE_DEVICE_READY_MAX_SUBSTATES
+};
+
+/**
+ * enum scic_sds_stp_remote_device_ready_substates -
+ *
+ * This is the enumeration for the struct scic_sds_remote_device ready substates
+ * for the STP remote device.
+ */
+enum scic_sds_stp_remote_device_ready_substates {
+        /**
+         * This is the idle substate for the stp remote device.  When there are no
+         * active IO for the device it is is in this state.
+         */
+        SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
+
+        /**
+         * This is the command state for for the STP remote device.  This state is
+         * entered when the device is processing a non-NCQ command.  The device object
+         * will fail any new start IO requests until this command is complete.
+         */
+        SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
+
+        /**
+         * This is the NCQ state for the STP remote device.  This state is entered
+         * when the device is processing an NCQ reuqest.  It will remain in this state
+         * so long as there is one or more NCQ requests being processed.
+         */
+        SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ,
+
+        /**
+         * This is the NCQ error state for the STP remote device.  This state is
+         * entered when an SDB error FIS is received by the device object while in the
+         * NCQ state.  The device object will only accept a READ LOG command while in
+         * this state.
+         */
+        SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_NCQ_ERROR,
+
+#if !defined(DISABLE_ATAPI)
+        /**
+         * This is the ATAPI error state for the STP ATAPI remote device.  This state is
+         * entered when ATAPI device sends error status FIS without data while the device
+         * object is in CMD state. A suspension event is expected in this state. The device
+         * object will resume right away.
+         */
+        SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_ATAPI_ERROR,
+#endif
+
+        /**
+         * This is the READY substate indicates the device is waiting for the RESET task
+         * coming to be recovered from certain hardware specific error.
+         */
+        SCIC_SDS_STP_REMOTE_DEVICE_READY_SUBSTATE_AWAIT_RESET,
+};
+
+/**
+ * enum scic_sds_smp_remote_device_ready_substates -
+ *
+ * This is the enumeration of the ready substates for the SMP REMOTE DEVICE.
+ */
+enum scic_sds_smp_remote_device_ready_substates {
+        /**
+         * This is the ready operational substate for the remote device.  This is the
+         * normal operational state for a remote device.
+         */
+        SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_IDLE,
+
+        /**
+         * This is the suspended state for the remote device.  This is the state that
+         * the device is placed in when a RNC suspend is received by the SCU hardware.
+         */
+        SCIC_SDS_SMP_REMOTE_DEVICE_READY_SUBSTATE_CMD,
+};
+
+static inline struct scic_sds_remote_device *rnc_to_dev(struct scic_sds_remote_node_context *rnc)
+{
+        struct scic_sds_remote_device *sci_dev;
+
+        sci_dev = container_of(rnc, typeof(*sci_dev), rnc);
+
+        return sci_dev;
+}
+
+typedef enum sci_status (*scic_sds_remote_device_request_handler_t)(
+        struct scic_sds_remote_device *device,
+        struct scic_sds_request *request);
+
+typedef enum sci_status (*scic_sds_remote_device_high_priority_request_complete_handler_t)(
+        struct scic_sds_remote_device *device,
+        struct scic_sds_request *request,
+        void *,
+        enum sci_io_status);
+
+typedef enum sci_status (*scic_sds_remote_device_handler_t)(
+        struct scic_sds_remote_device *sci_dev);
+
+typedef enum sci_status (*scic_sds_remote_device_suspend_handler_t)(
+        struct scic_sds_remote_device *sci_dev,
+        u32 suspend_type);
+
+typedef enum sci_status (*scic_sds_remote_device_resume_handler_t)(
+        struct scic_sds_remote_device *sci_dev);
+
+typedef enum sci_status (*scic_sds_remote_device_frame_handler_t)(
+        struct scic_sds_remote_device *sci_dev,
+        u32 frame_index);
+
+typedef enum sci_status (*scic_sds_remote_device_event_handler_t)(
+        struct scic_sds_remote_device *sci_dev,
+        u32 event_code);
+
+typedef void (*scic_sds_remote_device_ready_not_ready_handler_t)(
+        struct scic_sds_remote_device *sci_dev);
+
+/**
+ * struct scic_sds_remote_device_state_handler - This structure conains the
+ *    state handlers that are needed to process requests for the SCU remote
+ *    device objects.
+ *
+ *
+ */
+struct scic_sds_remote_device_state_handler {
+        /**
+         * The start_handler specifies the method invoked when a user
+         * attempts to start a remote device.
+         */
+        scic_sds_remote_device_handler_t start_handler;
+
+        /**
+         * The stop_handler specifies the method invoked when a user attempts to
+         * stop a remote device.
+         */
+        scic_sds_remote_device_handler_t stop_handler;
+
+        /**
+         * The fail_handler specifies the method invoked when a remote device
+         * failure has occurred.  A failure may be due to an inability to
+         * initialize/configure the device.
+         */
+        scic_sds_remote_device_handler_t fail_handler;
+
+        /**
+         * The destruct_handler specifies the method invoked when attempting to
+         * destruct a remote device.
+         */
+        scic_sds_remote_device_handler_t destruct_handler;
+
+        /**
+         * The reset handler specifies the method invloked when requesting to
+         * reset a remote device.
+         */
+        scic_sds_remote_device_handler_t reset_handler;
+
+        /**
+         * The reset complete handler specifies the method invloked when
+         * reporting that a reset has completed to the remote device.
+         */
+        scic_sds_remote_device_handler_t reset_complete_handler;
+
+        /**
+         * The start_io_handler specifies the method invoked when a user
+         * attempts to start an IO request for a remote device.
+         */
+        scic_sds_remote_device_request_handler_t start_io_handler;
+
+        /**
+         * The complete_io_handler specifies the method invoked when a user
+         * attempts to complete an IO request for a remote device.
+         */
+        scic_sds_remote_device_request_handler_t complete_io_handler;
+
+        /**
+         * The continue_io_handler specifies the method invoked when a user
+         * attempts to continue an IO request for a remote device.
+         */
+        scic_sds_remote_device_request_handler_t continue_io_handler;
+
+        /**
+         * The start_task_handler specifies the method invoked when a user
+         * attempts to start a task management request for a remote device.
+         */
+        scic_sds_remote_device_request_handler_t start_task_handler;
+
+        /**
+         * The complete_task_handler specifies the method invoked when a user
+         * attempts to complete a task management request for a remote device.
+         */
+        scic_sds_remote_device_request_handler_t complete_task_handler;
+
+
+        scic_sds_remote_device_suspend_handler_t suspend_handler;
+        scic_sds_remote_device_resume_handler_t resume_handler;
+        scic_sds_remote_device_event_handler_t event_handler;
+        scic_sds_remote_device_frame_handler_t frame_handler;
+};
+
+extern const struct sci_base_state scic_sds_ssp_remote_device_ready_substate_table[];
+extern const struct sci_base_state scic_sds_stp_remote_device_ready_substate_table[];
+extern const struct sci_base_state scic_sds_smp_remote_device_ready_substate_table[];
+
+/**
+ * scic_sds_remote_device_increment_request_count() -
+ *
+ * This macro incrments the request count for this device
+ */
+#define scic_sds_remote_device_increment_request_count(sci_dev) \
+        ((sci_dev)->started_request_count++)
+
+/**
+ * scic_sds_remote_device_decrement_request_count() -
+ *
+ * This macro decrements the request count for this device.  This count will
+ * never decrment past 0.
+ */
+#define scic_sds_remote_device_decrement_request_count(sci_dev) \
+        ((sci_dev)->started_request_count > 0 ? \
+         (sci_dev)->started_request_count-- : 0)
+
+/**
+ * scic_sds_remote_device_get_request_count() -
+ *
+ * This is a helper macro to return the current device request count.
+ */
+#define scic_sds_remote_device_get_request_count(sci_dev) \
+        ((sci_dev)->started_request_count)
+
+/**
+ * scic_sds_remote_device_get_port() -
+ *
+ * This macro returns the owning port of this remote device obejct.
+ */
+#define scic_sds_remote_device_get_port(sci_dev) \
+        ((sci_dev)->owning_port)
+
+/**
+ * scic_sds_remote_device_get_controller() -
+ *
+ * This macro returns the controller object that contains this device object
+ */
+#define scic_sds_remote_device_get_controller(sci_dev) \
+        scic_sds_port_get_controller(scic_sds_remote_device_get_port(sci_dev))
+
+/**
+ * scic_sds_remote_device_set_state_handlers() -
+ *
+ * This macro sets the remote device state handlers pointer and is set on entry
+ * to each device state.
+ */
+#define scic_sds_remote_device_set_state_handlers(sci_dev, handlers) \
+        ((sci_dev)->state_handlers = (handlers))
+
+/**
+ * scic_sds_remote_device_get_port() -
+ *
+ * This macro returns the owning port of this device
+ */
+#define scic_sds_remote_device_get_port(sci_dev) \
+        ((sci_dev)->owning_port)
+
+/**
+ * scic_sds_remote_device_get_sequence() -
+ *
+ * This macro returns the remote device sequence value
+ */
+#define scic_sds_remote_device_get_sequence(sci_dev) \
+        (\
+                scic_sds_remote_device_get_controller(sci_dev)-> \
+                remote_device_sequence[(sci_dev)->rnc.remote_node_index] \
+        )
+
+/**
+ * scic_sds_remote_device_get_controller_peg() -
+ *
+ * This macro returns the controllers protocol engine group
+ */
+#define scic_sds_remote_device_get_controller_peg(sci_dev) \
+        (\
+                scic_sds_controller_get_protocol_engine_group(\
+                        scic_sds_port_get_controller(\
+                                scic_sds_remote_device_get_port(sci_dev) \
+                                ) \
+                        ) \
+        )
+
+/**
+ * scic_sds_remote_device_get_port_index() -
+ *
+ * This macro returns the port index for the devices owning port
+ */
+#define scic_sds_remote_device_get_port_index(sci_dev) \
+        (scic_sds_port_get_index(scic_sds_remote_device_get_port(sci_dev)))
+
+/**
+ * scic_sds_remote_device_get_index() -
+ *
+ * This macro returns the remote node index for this device object
+ */
+#define scic_sds_remote_device_get_index(sci_dev) \
+        ((sci_dev)->rnc.remote_node_index)
+
+/**
+ * scic_sds_remote_device_build_command_context() -
+ *
+ * This macro builds a remote device context for the SCU post request operation
+ */
+#define scic_sds_remote_device_build_command_context(device, command) \
+        ((command) \
+         | (scic_sds_remote_device_get_controller_peg((device)) << SCU_CONTEXT_COMMAND_PROTOCOL_ENGINE_GROUP_SHIFT) \
+         | (scic_sds_remote_device_get_port_index((device)) << SCU_CONTEXT_COMMAND_LOGICAL_PORT_SHIFT) \
+         | (scic_sds_remote_device_get_index((device))) \
+        )
+
+/**
+ * scic_sds_remote_device_set_working_request() -
+ *
+ * This macro makes the working request assingment for the remote device
+ * object. To clear the working request use this macro with a NULL request
+ * object.
+ */
+#define scic_sds_remote_device_set_working_request(device, request) \
+        ((device)->working_request = (request))
+
+enum sci_status scic_sds_remote_device_frame_handler(
+        struct scic_sds_remote_device *sci_dev,
+        u32 frame_index);
+
+enum sci_status scic_sds_remote_device_event_handler(
+        struct scic_sds_remote_device *sci_dev,
+        u32 event_code);
+
+enum sci_status scic_sds_remote_device_start_io(
+        struct scic_sds_controller *controller,
+        struct scic_sds_remote_device *sci_dev,
+        struct scic_sds_request *io_request);
+
+enum sci_status scic_sds_remote_device_complete_io(
+        struct scic_sds_controller *controller,
+        struct scic_sds_remote_device *sci_dev,
+        struct scic_sds_request *io_request);
+
+enum sci_status scic_sds_remote_device_resume(
+        struct scic_sds_remote_device *sci_dev);
+
+enum sci_status scic_sds_remote_device_suspend(
+        struct scic_sds_remote_device *sci_dev,
+        u32 suspend_type);
+
+enum sci_status scic_sds_remote_device_start_task(
+        struct scic_sds_controller *controller,
+        struct scic_sds_remote_device *sci_dev,
+        struct scic_sds_request *io_request);
+
+void scic_sds_remote_device_post_request(
+        struct scic_sds_remote_device *sci_dev,
+        u32 request);
+
+#if !defined(DISABLE_ATAPI)
+bool scic_sds_remote_device_is_atapi(
+        struct scic_sds_remote_device *sci_dev);
+#else /* !defined(DISABLE_ATAPI) */
+#define scic_sds_remote_device_is_atapi(sci_dev) false
+#endif /* !defined(DISABLE_ATAPI) */
+
+void scic_sds_remote_device_start_request(
+        struct scic_sds_remote_device *sci_dev,
+        struct scic_sds_request *sci_req,
+        enum sci_status status);
+
+void scic_sds_remote_device_continue_request(void *sci_dev);
+
+enum sci_status scic_sds_remote_device_default_start_handler(
+        struct scic_sds_remote_device *sci_dev);
+
+enum sci_status scic_sds_remote_device_default_fail_handler(
+        struct scic_sds_remote_device *sci_dev);
+
+enum sci_status scic_sds_remote_device_default_destruct_handler(
+        struct scic_sds_remote_device *sci_dev);
+
+enum sci_status scic_sds_remote_device_default_reset_handler(
+        struct scic_sds_remote_device *device);
+
+enum sci_status scic_sds_remote_device_default_reset_complete_handler(
+        struct scic_sds_remote_device *device);
+
+enum sci_status scic_sds_remote_device_default_start_request_handler(
+        struct scic_sds_remote_device *device,
+        struct scic_sds_request *request);
+
+enum sci_status scic_sds_remote_device_default_complete_request_handler(
+        struct scic_sds_remote_device *device,
+        struct scic_sds_request *request);
+
+enum sci_status scic_sds_remote_device_default_continue_request_handler(
+        struct scic_sds_remote_device *device,
+        struct scic_sds_request *request);
+
+enum sci_status scic_sds_remote_device_default_suspend_handler(
+        struct scic_sds_remote_device *sci_dev,
+        u32 suspend_type);
+
+enum sci_status scic_sds_remote_device_default_resume_handler(
+        struct scic_sds_remote_device *sci_dev);
+
+
+enum sci_status scic_sds_remote_device_default_frame_handler(
+        struct scic_sds_remote_device *sci_dev,
+        u32 frame_index);
+
+enum sci_status scic_sds_remote_device_ready_state_stop_handler(
+        struct scic_sds_remote_device *device);
+
+enum sci_status scic_sds_remote_device_ready_state_reset_handler(
+        struct scic_sds_remote_device *device);
+
+enum sci_status scic_sds_remote_device_general_frame_handler(
+        struct scic_sds_remote_device *sci_dev,
+        u32 frame_index);
+
+enum sci_status scic_sds_remote_device_general_event_handler(
+        struct scic_sds_remote_device *sci_dev,
+        u32 event_code);
+
+enum sci_status scic_sds_ssp_remote_device_ready_suspended_substate_resume_handler(
+        struct scic_sds_remote_device *sci_dev);
+
+
 
 #endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */