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+/*-
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#ifndef _SCIC_USER_CALLBACK_H_
+#define _SCIC_USER_CALLBACK_H_
+
+/**
+ * @file
+ *
+ * @brief This file contains all of the interface methods/macros that must
+ * be implemented by an SCI Core user.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+#include <dev/isci/scil/sci_types.h>
+#include <dev/isci/scil/sci_status.h>
+#include <dev/isci/scil/sci_controller.h>
+
+/**
+ * @brief This callback method asks the user to create a timer and provide
+ * a handle for this timer for use in further timer interactions.
+ *
+ * @warning The "timer_callback" method should be executed in a mutually
+ * exlusive manner from the controller completion handler
+ * handler (refer to scic_controller_get_handler_methods()).
+ *
+ * @param[in] controller This parameter specifies the controller with
+ * which this timer is to be associated.
+ * @param[in] timer_callback This parameter specifies the callback method
+ * to be invoked whenever the timer expires.
+ * @param[in] cookie This parameter specifies a piece of information that
+ * the user must retain. This cookie is to be supplied by the
+ * user anytime a timeout occurs for the created timer.
+ *
+ * @return This method returns a handle to a timer object created by the
+ * user. The handle will be utilized for all further interactions
+ * relating to this timer.
+ */
+void * scic_cb_timer_create(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_TIMER_CALLBACK_T timer_callback,
+ void * cookie
+);
+
+/**
+ * @brief This callback method asks the user to destory the supplied timer.
+ *
+ * @param[in] controller This parameter specifies the controller with
+ * which this timer is to associated.
+ * @param[in] timer This parameter specifies the timer to be destroyed.
+ *
+ * @return none
+ */
+void scic_cb_timer_destroy(
+ SCI_CONTROLLER_HANDLE_T controller,
+ void * timer
+);
+
+/**
+ * @brief This callback method asks the user to start the supplied timer.
+ *
+ * @warning All timers in the system started by the SCI Core are one shot
+ * timers. Therefore, the SCI user should make sure that it
+ * removes the timer from it's list when a timer actually fires.
+ * Additionally, SCI Core user's should be able to handle
+ * calls from the SCI Core to stop a timer that may already
+ * be stopped.
+ *
+ * @param[in] controller This parameter specifies the controller with
+ * which this timer is to associated.
+ * @param[in] timer This parameter specifies the timer to be started.
+ * @param[in] milliseconds This parameter specifies the number of
+ * milliseconds for which to stall. The operating system driver
+ * is allowed to round this value up where necessary.
+ *
+ * @return none
+ */
+void scic_cb_timer_start(
+ SCI_CONTROLLER_HANDLE_T controller,
+ void * timer,
+ U32 milliseconds
+);
+
+/**
+ * @brief This callback method asks the user to stop the supplied timer.
+ *
+ * @param[in] controller This parameter specifies the controller with
+ * which this timer is to associated.
+ * @param[in] timer This parameter specifies the timer to be stopped.
+ *
+ * @return none
+ */
+void scic_cb_timer_stop(
+ SCI_CONTROLLER_HANDLE_T controller,
+ void * timer
+);
+
+/**
+ * @brief This method is called when the core requires the OS driver
+ * to stall execution. This method is utilized during initialization
+ * or non-performance paths only.
+ *
+ * @param[in] microseconds This parameter specifies the number of
+ * microseconds for which to stall. The operating system driver
+ * is allowed to round this value up where necessary.
+ *
+ * @return none.
+ */
+void scic_cb_stall_execution(
+ U32 microseconds
+);
+
+/**
+ * @brief This user callback will inform the user that the controller has
+ * finished the start process.
+ *
+ * @param[in] controller This parameter specifies the controller that was
+ * started.
+ * @param[in] completion_status This parameter specifies the results of
+ * the start operation. SCI_SUCCESS indicates successful
+ * completion.
+ *
+ * @return none
+ */
+void scic_cb_controller_start_complete(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_STATUS completion_status
+);
+
+/**
+ * @brief This user callback will inform the user that the controller has
+ * finished the stop process.
+ *
+ * @param[in] controller This parameter specifies the controller that was
+ * stopped.
+ * @param[in] completion_status This parameter specifies the results of
+ * the stop operation. SCI_SUCCESS indicates successful
+ * completion.
+ *
+ * @return none
+ */
+void scic_cb_controller_stop_complete(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_STATUS completion_status
+);
+
+/**
+ * @brief This user callback will inform the user that an IO request has
+ * completed.
+ *
+ * @param[in] controller This parameter specifies the controller on
+ * which the IO is completing.
+ * @param[in] remote_device This parameter specifies the remote device on
+ * which this IO request is completing.
+ * @param[in] io_request This parameter specifies the IO request that has
+ * completed.
+ * @param[in] completion_status This parameter specifies the results of
+ * the IO request operation. SCI_SUCCESS indicates successful
+ * completion.
+ *
+ * @return none
+ */
+void scic_cb_io_request_complete(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_REMOTE_DEVICE_HANDLE_T remote_device,
+ SCI_IO_REQUEST_HANDLE_T io_request,
+ SCI_IO_STATUS completion_status
+);
+
+/**
+ * @brief This method simply returns the virtual address associated
+ * with the scsi_io and byte_offset supplied parameters.
+ *
+ * @note This callback is not utilized in the fast path. The expectation
+ * is that this method is utilized for items such as SCSI to ATA
+ * translation for commands like INQUIRY, READ CAPACITY, etc.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ * @param[in] byte_offset This parameter specifies the offset into the data
+ * buffers pointed to by the SGL. The byte offset starts at 0
+ * and continues until the last byte pointed to be the last SGL
+ * element.
+ *
+ * @return A virtual address pointer to the location specified by the
+ * parameters.
+ */
+U8 *scic_cb_io_request_get_virtual_address_from_sgl(
+ void * scic_user_io_request,
+ U32 byte_offset
+);
+
+/**
+ * @brief This user callback will inform the user that a task management
+ * request completed.
+ *
+ * @param[in] controller This parameter specifies the controller on
+ * which the task management request is completing.
+ * @param[in] remote_device This parameter specifies the remote device on
+ * which this task management request is completing.
+ * @param[in] task_request This parameter specifies the task management
+ * request that has completed.
+ * @param[in] completion_status This parameter specifies the results of
+ * the IO request operation. SCI_SUCCESS indicates successful
+ * completion.
+ *
+ * @return none
+ */
+void scic_cb_task_request_complete(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_REMOTE_DEVICE_HANDLE_T remote_device,
+ SCI_TASK_REQUEST_HANDLE_T task_request,
+ SCI_TASK_STATUS completion_status
+);
+
+#ifndef SCI_GET_PHYSICAL_ADDRESS_OPTIMIZATION_ENABLED
+/**
+ * @brief This callback method asks the user to provide the physical
+ * address for the supplied virtual address when building an
+ * io request object.
+ *
+ * @param[in] controller This parameter is the core controller object
+ * handle.
+ * @param[in] io_request This parameter is the io request object handle
+ * for which the physical address is being requested.
+ * @param[in] virtual_address This paramter is the virtual address which
+ * is to be returned as a physical address.
+ * @param[out] physical_address The physical address for the supplied virtual
+ * address.
+ *
+ * @return None.
+ */
+void scic_cb_io_request_get_physical_address(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_IO_REQUEST_HANDLE_T io_request,
+ void * virtual_address,
+ SCI_PHYSICAL_ADDRESS * physical_address
+);
+#endif // SCI_GET_PHYSICAL_ADDRESS_OPTIMIZATION_ENABLED
+
+/**
+ * @brief This callback method asks the user to provide the number of
+ * bytes to be transfered as part of this request.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the number of payload data bytes to be
+ * transfered for this IO request.
+ */
+U32 scic_cb_io_request_get_transfer_length(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This callback method asks the user to provide the data direction
+ * for this request.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the value of SCI_IO_REQUEST_DATA_OUT or
+ * SCI_IO_REQUEST_DATA_IN, or SCI_IO_REQUEST_NO_DATA.
+ */
+SCI_IO_REQUEST_DATA_DIRECTION scic_cb_io_request_get_data_direction(
+ void * scic_user_io_request
+);
+
+#ifdef ENABLE_OSSL_COPY_BUFFER
+/**
+ * @brief This method is presently utilized in the PIO path,
+ * copies from UF buffer to the SGL buffer. This method
+ * can be served for other OS related copies.
+ *
+ * @param[in] scic_user_io_request. This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ * @param[in] source addr. Address of UF buffer.
+ * @param[in] offset. This parameter specifies the offset into the data
+ * buffers pointed to by the SGL. The byte offset starts at 0
+ * and continues until the last byte pointed to be the last SGL
+ * element.
+ * @param[in] length. data length
+ *
+ * @return None
+ */
+void scic_cb_io_request_copy_buffer(
+ void * scic_user_io_request,
+ U8 *source_addr,
+ U32 offset,
+ U32 length
+);
+#endif
+
+#ifndef SCI_SGL_OPTIMIZATION_ENABLED
+/**
+ * @brief This callback method asks the user to provide the address
+ * to where the next Scatter-Gather Element is located.
+ *
+ * Details regarding usage:
+ * - Regarding the first SGE: the user should initialize an index,
+ * or a pointer, prior to construction of the request that will
+ * reference the very first scatter-gather element. This is
+ * important since this method is called for every scatter-gather
+ * element, including the first element.
+ * - Regarding the last SGE: the user should return NULL from this
+ * method when this method is called and the SGL has exhausted
+ * all elements.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ * @param[in] current_sge_address This parameter specifies the address for
+ * the current SGE (i.e. the one that has just processed).
+ * @param[out] next_sge An address specifying the location for the next
+ * scatter gather element to be processed.
+ *
+ * @return None
+ */
+void scic_cb_io_request_get_next_sge(
+ void * scic_user_io_request,
+ void * current_sge_address,
+ void ** next_sge
+);
+#endif // SCI_SGL_OPTIMIZATION_ENABLED
+
+/**
+ * @brief This callback method asks the user to provide the contents of the
+ * "address" field in the Scatter-Gather Element.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ * @param[in] sge_address This parameter specifies the address for the
+ * SGE from which to retrieve the address field.
+ *
+ * @return A physical address specifying the contents of the SGE's address
+ * field.
+ */
+SCI_PHYSICAL_ADDRESS scic_cb_sge_get_address_field(
+ void * scic_user_io_request,
+ void * sge_address
+);
+
+/**
+ * @brief This callback method asks the user to provide the contents of the
+ * "length" field in the Scatter-Gather Element.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ * @param[in] sge_address This parameter specifies the address for the
+ * SGE from which to retrieve the address field.
+ *
+ * @return This method returns the length field specified inside the SGE
+ * referenced by the sge_address parameter.
+ */
+U32 scic_cb_sge_get_length_field(
+ void * scic_user_io_request,
+ void * sge_address
+);
+
+/**
+ * @brief This callback method asks the user to provide the address for
+ * the command descriptor block (CDB) associated with this IO request.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the virtual address of the CDB.
+ */
+void * scic_cb_ssp_io_request_get_cdb_address(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This callback method asks the user to provide the length of
+ * the command descriptor block (CDB) associated with this IO request.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the length of the CDB.
+ */
+U32 scic_cb_ssp_io_request_get_cdb_length(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This callback method asks the user to provide the Logical Unit (LUN)
+ * associated with this IO request.
+ *
+ * @note The contents of the value returned from this callback are defined
+ * by the protocol standard (e.g. T10 SAS specification). Please
+ * refer to the transport command information unit description
+ * in the associated standard.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the LUN associated with this request.
+ * @todo This should be U64?
+ */
+U32 scic_cb_ssp_io_request_get_lun(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This callback method asks the user to provide the task attribute
+ * associated with this IO request.
+ *
+ * @note The contents of the value returned from this callback are defined
+ * by the protocol standard (e.g. T10 SAS specification). Please
+ * refer to the transport command information unit description
+ * in the associated standard.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the task attribute associated with this
+ * IO request.
+ */
+U32 scic_cb_ssp_io_request_get_task_attribute(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This callback method asks the user to provide the command priority
+ * associated with this IO request.
+ *
+ * @note The contents of the value returned from this callback are defined
+ * by the protocol standard (e.g. T10 SAS specification). Please
+ * refer to the transport command information unit description
+ * in the associated standard.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's
+ * IO request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the command priority associated with this
+ * IO request.
+ */
+U32 scic_cb_ssp_io_request_get_command_priority(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This callback method asks the user if the received RX frame data is
+ * to be copied to the SGL or should be stored by the SCI core to be
+ * retrieved later with the scic_io_request_get_rx_frame().
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's IO
+ * request object. It is a cookie that allows the user to provide the
+ * necessary information for this callback.
+ *
+ * @return This method returns TRUE if the SCI core should copy the received
+ * frame data to the SGL location or FALSE if the SCI user wants to
+ * retrieve the frame data at a later time.
+ */
+BOOL scic_cb_io_request_do_copy_rx_frames(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This callback method asks the user to return the SAT protocol
+ * definition for this IO request. This method is only called by the
+ * SCI core if the request type constructed is SATA.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's IO
+ * request object. It is a cookie that allows the user to provide the
+ * necessary information for this callback.
+ *
+ * @return This method returns one of the sat.h defined protocols for the
+ * given io request.
+ */
+U8 scic_cb_request_get_sat_protocol(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This callback method asks the user to indicate if the IO is initially
+ * constructed or is reconstructed using the recycled memory.
+ *
+ * @param[in] scic_user_io_request This parameter points to the user's IO
+ * request object. It is a cookie that allows the user to provide the
+ * necessary information for this callback.
+ *
+ * @return This method returns TRUE if the request is initial constructed.
+ * This method returns FALSE if the request is constructed using recycled
+ * memory. For many scic user, this method mostly always returns TRUE.
+ */
+BOOL scic_cb_request_is_initial_construction(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This method returns the Logical Unit to be utilized for this
+ * task management request.
+ *
+ * @note The contents of the value returned from this callback are defined
+ * by the protocol standard (e.g. T10 SAS specification). Please
+ * refer to the transport task information unit description
+ * in the associated standard.
+ *
+ * @param[in] scic_user_task_request This parameter points to the user's
+ * task request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the LUN associated with this request.
+ * @todo This should be U64?
+ */
+U32 scic_cb_ssp_task_request_get_lun(
+ void * scic_user_task_request
+);
+
+/**
+ * @brief This method returns the task management function to be utilized
+ * for this task request.
+ *
+ * @note The contents of the value returned from this callback are defined
+ * by the protocol standard (e.g. T10 SAS specification). Please
+ * refer to the transport task information unit description
+ * in the associated standard.
+ *
+ * @param[in] scic_user_task_request This parameter points to the user's
+ * task request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns an unsigned byte representing the task
+ * management function to be performed.
+ */
+U8 scic_cb_ssp_task_request_get_function(
+ void * scic_user_task_request
+);
+
+/**
+ * @brief This method returns the task management IO tag to be managed.
+ * Depending upon the task management function the value returned
+ * from this method may be ignored.
+ *
+ * @param[in] scic_user_task_request This parameter points to the user's
+ * task request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns an unsigned 16-bit word depicting the IO
+ * tag to be managed.
+ */
+U16 scic_cb_ssp_task_request_get_io_tag_to_manage(
+ void * scic_user_task_request
+);
+
+/**
+ * @brief This callback method asks the user to provide the virtual
+ * address of the response data buffer for the supplied IO request.
+ *
+ * @param[in] scic_user_task_request This parameter points to the user's
+ * task request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the virtual address for the response data buffer
+ * associated with this IO request.
+ */
+void * scic_cb_ssp_task_request_get_response_data_address(
+ void * scic_user_task_request
+);
+
+/**
+ * @brief This callback method asks the user to provide the length of the
+ * response data buffer for the supplied IO request.
+ *
+ * @param[in] scic_user_task_request This parameter points to the user's
+ * task request object. It is a cookie that allows the user to
+ * provide the necessary information for this callback.
+ *
+ * @return This method returns the length of the response buffer data
+ * associated with this IO request.
+ */
+U32 scic_cb_ssp_task_request_get_response_data_length(
+ void * scic_user_task_request
+);
+
+/**
+ * @brief In this method the user is expected to log the supplied
+ * error information. The user must be capable of handling variable
+ * length argument lists and should consider prepending the fact
+ * that this is an error from the core.
+ *
+ * @param[in] logger_object This parameter specifies the logger object
+ * associated with this message.
+ * @param[in] log_object_mask This parameter specifies the log objects
+ * for which this message is being generated.
+ * @param[in] log_message This parameter specifies the message to be logged.
+ *
+ * @return none
+ */
+void scic_cb_logger_log_error(
+ SCI_LOGGER_HANDLE_T logger_object,
+ U32 log_object_mask,
+ char * log_message,
+ ...
+);
+
+
+/**
+ * @brief In this method the user is expected to log the supplied warning
+ * information. The user must be capable of handling variable
+ * length argument lists and should consider prepending the fact
+ * that this is a warning from the core.
+ *
+ * @param[in] logger_object This parameter specifies the logger object
+ * associated with this message.
+ * @param[in] log_object_mask This parameter specifies the log objects
+ * for which this message is being generated.
+ * @param[in] log_message This parameter specifies the message to be logged.
+ *
+ * @return none
+ */
+void scic_cb_logger_log_warning(
+ SCI_LOGGER_HANDLE_T logger_object,
+ U32 log_object_mask,
+ char * log_message,
+ ...
+);
+
+
+/**
+ * @brief In this method the user is expected to log the supplied debug
+ * information. The user must be capable of handling variable
+ * length argument lists and should consider prepending the fact
+ * that this is a debug message from the core.
+ *
+ * @param[in] logger_object This parameter specifies the logger object
+ * associated with this message.
+ * @param[in] log_object_mask This parameter specifies the log objects
+ * for which this message is being generated.
+ * @param[in] log_message This parameter specifies the message to be logged.
+ *
+ * @return none
+ */
+void scic_cb_logger_log_info(
+ SCI_LOGGER_HANDLE_T logger_object,
+ U32 log_object_mask,
+ char * log_message,
+ ...
+);
+
+
+/**
+ * @brief In this method the user is expected to log the supplied function
+ * trace information. The user must be capable of handling variable
+ * length argument lists and should consider prepending the fact
+ * that this is a function trace (i.e. entry/exit) message from the
+ * core.
+ *
+ * @param[in] logger_object This parameter specifies the logger object
+ * associated with this message.
+ * @param[in] log_object_mask This parameter specifies the log objects
+ * for which this message is being generated.
+ * @param[in] log_message This parameter specifies the message to be logged.
+ *
+ * @return none
+ */
+void scic_cb_logger_log_trace(
+ SCI_LOGGER_HANDLE_T logger_object,
+ U32 log_object_mask,
+ char * log_message,
+ ...
+);
+
+
+/**
+ * @brief In this method the user is expected to log the supplied state
+ * transition information. The user must be capable of handling
+ * variable length argument lists and should consider prepending the
+ * fact that this is a warning from the core.
+ *
+ * @param[in] logger_object This parameter specifies the logger object
+ * associated with this message.
+ * @param[in] log_object_mask This parameter specifies the log objects
+ * for which this message is being generated.
+ * @param[in] log_message This parameter specifies the message to be logged.
+ *
+ * @return none
+ */
+void scic_cb_logger_log_states(
+ SCI_LOGGER_HANDLE_T logger_object,
+ U32 log_object_mask,
+ char * log_message,
+ ...
+);
+
+
+/**
+ * @brief In this method the user must return the base address register (BAR)
+ * value for the supplied base address register number.
+ *
+ * @param[in] controller The controller for which to retrieve the bar number.
+ * @param[in] bar_number This parameter depicts the BAR index/number to be read.
+ *
+ * @return Return a pointer value indicating the contents of the BAR.
+ * @retval NULL indicates an invalid BAR index/number was specified.
+ * @retval All other values indicate a valid VIRTUAL address from the BAR.
+ */
+void * scic_cb_pci_get_bar(
+ SCI_CONTROLLER_HANDLE_T controller,
+ U16 bar_number
+);
+
+/**
+ * @brief In this method the user must read from PCI memory via access.
+ * This method is used for access to memory space and IO space.
+ *
+ * @param[in] controller The controller for which to read a DWORD.
+ * @param[in] address This parameter depicts the address from
+ * which to read.
+ *
+ * @return The value being returned from the PCI memory location.
+ *
+ * @todo This PCI memory access calls likely need to be optimized into macro?
+ */
+U32 scic_cb_pci_read_dword(
+ SCI_CONTROLLER_HANDLE_T controller,
+ void * address
+);
+
+/**
+ * @brief In this method the user must write to PCI memory via access.
+ * This method is used for access to memory space and IO space.
+ *
+ * @param[in] controller The controller for which to read a DWORD.
+ * @param[in] address This parameter depicts the address into
+ * which to write.
+ * @param[out] write_value This parameter depicts the value being written
+ * into the PCI memory location.
+ *
+ * @todo This PCI memory access calls likely need to be optimized into macro?
+ */
+void scic_cb_pci_write_dword(
+ SCI_CONTROLLER_HANDLE_T controller,
+ void * address,
+ U32 write_value
+);
+
+/**
+ * @brief This method informs the user when a stop operation on the port
+ * has completed.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked.
+ * @param[in] completion_status This parameter specifies the status for
+ * the operation being completed.
+ *
+ * @return none
+ */
+void scic_cb_port_stop_complete(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_STATUS completion_status
+);
+
+/**
+ * @brief This method informs the user when a hard reset on the port
+ * has completed. This hard reset could have been initiated by the
+ * user or by the remote port.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked.
+ * @param[in] completion_status This parameter specifies the status for
+ * the operation being completed.
+ *
+ * @return none
+ */
+void scic_cb_port_hard_reset_complete(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_STATUS completion_status
+);
+
+/**
+ * @brief This method informs the user that the port is now in a ready
+ * state and can be utilized to issue IOs.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked.
+ *
+ * @return none
+ */
+void scic_cb_port_ready(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port
+);
+
+/**
+ * @brief This method informs the user that the port is now not in a ready
+ * (i.e. busy) state and can't be utilized to issue IOs.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked.
+ * @param[in] reason_code This parameter specifies the reason for the port
+ * not ready callback.
+ *
+ * @return none
+ */
+void scic_cb_port_not_ready(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ U32 reason_code
+);
+
+/**
+ * @brief This method 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.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked.
+ * @param[in] phy This parameter specifies the phy that came ready, but the
+ * phy can't be a valid member of the port.
+ *
+ * @return none
+ */
+void scic_cb_port_invalid_link_up(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_PHY_HANDLE_T phy
+);
+
+/**
+ * @brief This callback method informs the user that a broadcast change
+ * primitive was received.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked. For instances where the phy
+ * on which the primitive was received is not part of a port, this
+ * parameter will be SCI_INVALID_HANDLE_T.
+ * @param[in] phy This parameter specifies the phy on which the primitive
+ * was received.
+ *
+ * @return none
+ */
+void scic_cb_port_bc_change_primitive_recieved(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_PHY_HANDLE_T phy
+);
+
+/**
+ * @brief This callback method informs the user that a broadcast SES
+ * primitive was received.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked. For instances where the phy
+ * on which the primitive was received is not part of a port, this
+ * parameter will be SCI_INVALID_HANDLE_T.
+ * @param[in] phy This parameter specifies the phy on which the primitive
+ * was received.
+ *
+ * @return none
+ */
+void scic_cb_port_bc_ses_primitive_recieved(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_PHY_HANDLE_T phy
+);
+
+/**
+ * @brief This callback method informs the user that a broadcast EXPANDER
+ * primitive was received.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked. For instances where the phy
+ * on which the primitive was received is not part of a port, this
+ * parameter will be SCI_INVALID_HANDLE_T.
+ * @param[in] phy This parameter specifies the phy on which the primitive
+ * was received.
+ *
+ * @return none
+ */
+void scic_cb_port_bc_expander_primitive_recieved(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_PHY_HANDLE_T phy
+);
+
+/**
+ * @brief This callback method informs the user that a broadcast ASYNCHRONOUS
+ * EVENT (AEN) primitive was received.
+ *
+ * @param[in] controller This parameter represents the controller which
+ * contains the port.
+ * @param[in] port This parameter specifies the SCI port object for which
+ * the callback is being invoked. For instances where the phy
+ * on which the primitive was received is not part of a port, this
+ * parameter will be SCI_INVALID_HANDLE_T.
+ * @param[in] phy This parameter specifies the phy on which the primitive
+ * was received.
+ *
+ * @return none
+ */
+void scic_cb_port_bc_aen_primitive_recieved(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_PHY_HANDLE_T phy
+);
+
+/**
+ * @brief This callback method informs the user that a phy has become
+ * operational and is capable of communicating with the remote end
+ * point.
+ *
+ * @param[in] controller This parameter represents the controller
+ * associated with the phy.
+ * @param[in] port This parameter specifies the port object for which the
+ * user callback is being invoked. There may be conditions where
+ * this parameter can be SCI_INVALID_HANDLE
+ * @param[in] phy This parameter specifies the phy object for which the
+ * user callback is being invoked.
+ *
+ * @return none
+ */
+void scic_cb_port_link_up(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_PHY_HANDLE_T phy
+);
+
+/**
+ * @brief This callback method informs the user that a phy is no longer
+ * operational and is not capable of communicating with the remote end
+ * point.
+ *
+ * @param[in] controller This parameter represents the controller
+ * associated with the phy.
+ * @param[in] port This parameter specifies the port object for which the
+ * user callback is being invoked. There may be conditions where
+ * this parameter can be SCI_INVALID_HANDLE
+ * @param[in] phy This parameter specifies the phy object for which the
+ * user callback is being invoked.
+ *
+ * @return none
+ */
+void scic_cb_port_link_down(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_PORT_HANDLE_T port,
+ SCI_PHY_HANDLE_T phy
+);
+
+/**
+ * @brief This user callback method will inform the user that a start
+ * operation has completed.
+ *
+ * @param[in] controller This parameter specifies the core controller
+ * associated with the completion callback.
+ * @param[in] remote_device This parameter specifies the remote device
+ * associated with the completion callback.
+ * @param[in] completion_status This parameter specifies the completion
+ * status for the operation.
+ *
+ * @return none
+ */
+void scic_cb_remote_device_start_complete(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_REMOTE_DEVICE_HANDLE_T remote_device,
+ SCI_STATUS completion_status
+);
+
+/**
+ * @brief This user callback method will inform the user that a stop
+ * operation has completed.
+ *
+ * @param[in] controller This parameter specifies the core controller
+ * associated with the completion callback.
+ * @param[in] remote_device This parameter specifies the remote device
+ * associated with the completion callback.
+ * @param[in] completion_status This parameter specifies the completion
+ * status for the operation.
+ *
+ * @return none
+ */
+void scic_cb_remote_device_stop_complete(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_REMOTE_DEVICE_HANDLE_T remote_device,
+ SCI_STATUS completion_status
+);
+
+/**
+ * @brief This user callback method will inform the user that a remote
+ * device is now capable of handling IO requests.
+ *
+ * @param[in] controller This parameter specifies the core controller
+ * associated with the completion callback.
+ * @param[in] remote_device This parameter specifies the remote device
+ * associated with the callback.
+ *
+ * @return none
+ */
+void scic_cb_remote_device_ready(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_REMOTE_DEVICE_HANDLE_T remote_device
+);
+
+/**
+ * @brief This user callback method will inform the user that a remote
+ * device is no longer capable of handling IO requests (until a
+ * ready callback is invoked).
+ *
+ * @param[in] controller This parameter specifies the core controller
+ * associated with the completion callback.
+ * @param[in] remote_device This parameter specifies the remote device
+ * associated with the callback.
+ * @param[in] reason_code This paramete specifies the reason the remote
+ * device is not ready.
+ *
+ * @return none
+ */
+void scic_cb_remote_device_not_ready(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_REMOTE_DEVICE_HANDLE_T remote_device,
+ U32 reason_code
+);
+
+
+/**
+ * @brief This user callback method will inform the user that this controller
+ * is having unexpected error. The user can choose to reset the controller.
+ * @param[in] controller The controller that is failed at the moment.
+ *
+ * @return none
+ */
+void scic_cb_controller_error(
+ SCI_CONTROLLER_HANDLE_T controller,
+ SCI_CONTROLLER_ERROR error
+);
+
+
+#if !defined(DISABLE_ATAPI)
+/**
+ * @brief This user callback gets from stp packet io's user request
+ * the CDB address.
+ * @param[in] scic_user_io_request
+ *
+ * @return The cdb adress.
+ */
+void * scic_cb_stp_packet_io_request_get_cdb_address(
+ void * scic_user_io_request
+);
+
+/**
+ * @brief This user callback gets from stp packet io's user request
+ * the CDB length.
+ * @param[in] scic_user_io_request
+ *
+ * @return The cdb length.
+ */
+U32 scic_cb_stp_packet_io_request_get_cdb_length(
+ void * scic_user_io_request
+);
+#else //!defined(DISABLE_ATAPI)
+#define scic_cb_stp_packet_io_request_get_cdb_address(scic_user_io_request) NULL
+#define scic_cb_stp_packet_io_request_get_cdb_length(scic_user_io_request) 0
+#endif //!defined(DISABLE_ATAPI)
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif // _SCIC_USER_CALLBACK_H_
+
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