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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.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
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 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 * $FreeBSD: release/9.1.0/sys/dev/isci/scil/sati_translator_sequence.h 231689 2012-02-14 15:58:49Z jimharris $
 */
#ifndef _SATI_TRANSLATOR_SEQUENCE_H_
#define _SATI_TRANSLATOR_SEQUENCE_H_

/**
 * @file
 * @brief This file contains all of the defintions for the SATI translator
 *        sequence.  A translator sequence is simply a defintion for the
 *        various sequences of commands that occur in this translator.
 */

#include <dev/isci/scil/sati_device.h>

/**
 * @enum _SATI_TRANSLATOR_SEQUENCE_TYPE
 *
 * @brief This enumeration defines the possible sequence types for the
 *        translator.
 */
typedef enum _SATI_TRANSLATOR_SEQUENCE_TYPE
{
   // SCSI Primary Command (SPC) sequences.
   SATI_SEQUENCE_REPORT_LUNS,
   SATI_SEQUENCE_TEST_UNIT_READY,
   SATI_SEQUENCE_INQUIRY_STANDARD,
   SATI_SEQUENCE_INQUIRY_SUPPORTED_PAGES,
   SATI_SEQUENCE_INQUIRY_SERIAL_NUMBER,
   SATI_SEQUENCE_INQUIRY_DEVICE_ID,
   SATI_SEQUENCE_INQUIRY_ATA_INFORMATION,
   SATI_SEQUENCE_INQUIRY_BLOCK_DEVICE,
   SATI_SEQUENCE_INQUIRY_EXECUTE_DEVICE_DIAG,
   SATI_SEQUENCE_MODE_SENSE_6_CACHING,
   SATI_SEQUENCE_MODE_SENSE_6_INFORMATIONAL_EXCP_CONTROL,
   SATI_SEQUENCE_MODE_SENSE_6_READ_WRITE_ERROR,
   SATI_SEQUENCE_MODE_SENSE_6_DISCONNECT_RECONNECT,
   SATI_SEQUENCE_MODE_SENSE_6_CONTROL,
   SATI_SEQUENCE_MODE_SENSE_6_POWER_CONDITION,
   SATI_SEQUENCE_MODE_SENSE_6_ALL_PAGES,
   SATI_SEQUENCE_MODE_SENSE_10_CACHING,
   SATI_SEQUENCE_MODE_SENSE_10_INFORMATIONAL_EXCP_CONTROL,
   SATI_SEQUENCE_MODE_SENSE_10_READ_WRITE_ERROR,
   SATI_SEQUENCE_MODE_SENSE_10_DISCONNECT_RECONNECT,
   SATI_SEQUENCE_MODE_SENSE_10_CONTROL,
   SATI_SEQUENCE_MODE_SENSE_10_POWER_CONDITION,
   SATI_SEQUENCE_MODE_SENSE_10_ALL_PAGES,
   SATI_SEQUENCE_MODE_SELECT_MODE_PAGE_CACHING,
   SATI_SEQUENCE_MODE_SELECT_MODE_POWER_CONDITION,
   SATI_SEQUENCE_MODE_SELECT_MODE_INFORMATION_EXCEPT_CONTROL,

      //Log Sense Sequences
   SATI_SEQUENCE_LOG_SENSE_SELF_TEST_LOG_PAGE,
   SATI_SEQUENCE_LOG_SENSE_EXTENDED_SELF_TEST_LOG_PAGE,
   SATI_SEQUENCE_LOG_SENSE_SUPPORTED_LOG_PAGE,
   SATI_SEQUENCE_LOG_SENSE_INFO_EXCEPTION_LOG_PAGE,

   // SCSI Block Command (SBC) sequences.

   SATI_SEQUENCE_READ_6,
   SATI_SEQUENCE_READ_10,
   SATI_SEQUENCE_READ_12,
   SATI_SEQUENCE_READ_16,

   SATI_SEQUENCE_READ_CAPACITY_10,
   SATI_SEQUENCE_READ_CAPACITY_16,

   SATI_SEQUENCE_SYNCHRONIZE_CACHE,

   SATI_SEQUENCE_VERIFY_10,
   SATI_SEQUENCE_VERIFY_12,
   SATI_SEQUENCE_VERIFY_16,

   SATI_SEQUENCE_WRITE_6,
   SATI_SEQUENCE_WRITE_10,
   SATI_SEQUENCE_WRITE_12,
   SATI_SEQUENCE_WRITE_16,

   SATI_SEQUENCE_WRITE_AND_VERIFY,

   SATI_SEQUENCE_START_STOP_UNIT,

   SATI_SEQUENCE_REASSIGN_BLOCKS,

   // SCSI Task Requests sequences

   SATI_SEQUENCE_LUN_RESET,
   SATI_SEQUENCE_ABORT_TASK_SET,

   SATI_SEQUENCE_REQUEST_SENSE_SMART_RETURN_STATUS,
   SATI_SEQUENCE_REQUEST_SENSE_CHECK_POWER_MODE,

   SATI_SEQUENCE_WRITE_LONG,

   SATI_SEQUENCE_UNMAP,

   SATI_SEQUENCE_ATA_PASSTHROUGH_12,
   SATI_SEQUENCE_ATA_PASSTHROUGH_16,

   SATI_SEQUENCE_READ_BUFFER,
   SATI_SEQUENCE_WRITE_BUFFER,
   SATI_SEQUENCE_WRITE_BUFFER_MICROCODE

} SATI_TRANSLATOR_SEQUENCE_TYPE;

#define SATI_SEQUENCE_TYPE_READ_MIN SATI_SEQUENCE_READ_6
#define SATI_SEQUENCE_TYPE_READ_MAX SATI_SEQUENCE_READ_16

/**
 * @name SATI_SEQUENCE_STATES
 *
 * These constants depict the various state values associated with a
 * translation sequence.
 */
/*@{*/
#define SATI_SEQUENCE_STATE_INITIAL            0
#define SATI_SEQUENCE_STATE_TRANSLATE_DATA     1
#define SATI_SEQUENCE_STATE_AWAIT_RESPONSE     2
#define SATI_SEQUENCE_STATE_FINAL              3
#define SATI_SEQUENCE_STATE_INCOMPLETE         4
#define SATI_SEQUENCE_STATE_READ_ERROR         5
/*@}*/

/**
 * @name SATI_DATA_DIRECTIONS
 *
 * These constants depict the various types of data directions for a
 * translation sequence.  Data can flow in/out (read/write) or no data at
 * all.
 */
/*@{*/
#define SATI_DATA_DIRECTION_NONE 0
#define SATI_DATA_DIRECTION_IN   1
#define SATI_DATA_DIRECTION_OUT  2
/*@}*/

/**
 * @struct SATI_MODE_SELECT_PROCESSING_STATE
 *
 * @brief This structure contains all of the current processing states
 *        for processing mode select 6 and 10 commands' parameter fields.
 */
typedef  struct SATI_MODE_SELECT_PROCESSING_STATE
{
   U8       * mode_pages;
   U32      mode_page_offset;
   U32      mode_pages_size;
   U32      size_of_data_processed;
   U32      total_ata_command_sent;
   U32      ata_command_sent_for_cmp; // cmp: current mode page
   BOOL     current_mode_page_processed;

} SATI_MODE_SELECT_PROCESSING_STATE_T;


enum SATI_REASSIGN_BLOCKS_ATA_COMMAND_STATUS
{
   SATI_REASSIGN_BLOCKS_READY_TO_SEND,
   SATI_REASSIGN_BLOCKS_COMMAND_FAIL,
   SATI_REASSIGN_BLOCKS_COMMAND_SUCCESS,
};

/**
 * @struct SATI_REASSIGN_BLOCKS_PROCESSING_STATE
 *
 * @brief This structure contains all of the current processing states
 *        for processing reassign block command's parameter fields.
 */
typedef struct SATI_REASSIGN_BLOCKS_PROCESSING_STATE
{
   U32      lba_offset;
   U32      block_lists_size;
   U8       lba_size;
   U32      size_of_data_processed;
   U32      ata_command_sent_for_current_lba;
   BOOL     current_lba_processed;
   enum     SATI_REASSIGN_BLOCKS_ATA_COMMAND_STATUS  ata_command_status;

}SATI_REASSIGN_BLOCKS_PROCESSING_STATE_T;

#define SATI_ATAPI_REQUEST_SENSE_CDB_LENGTH 12

/**
 * @struct SATI_ATAPI_DATA
 *
 * @brief The SATI_ATAPI_DATA structure is for sati atapi IO specific data.
 */
typedef struct SATI_ATAPI_DATA
{
  U8 request_sense_cdb[SATI_ATAPI_REQUEST_SENSE_CDB_LENGTH];
} SATI_ATAPI_DATA_T;


enum SATI_UNMAP_ATA_COMMAND_STATUS
{
   SATI_UNMAP_READY_TO_SEND,
   SATI_UNMAP_COMMAND_FAIL,
   SATI_UNMAP_COMMAND_SUCCESS,
};

/**
 * @struct SATI_UNMAP_PROCESSING_STATE
 *
 * @brief This structure contains all of the current processing states
 *        for processing unmap command data translation.
 */
typedef struct SATI_UNMAP_PROCESSING_STATE
{
   U32      max_unmap_block_descriptors;
   U32      current_unmap_block_descriptor_index;
   U32      current_lba_count;
   SATI_LBA current_lba;
   SATI_LBA next_lba;
   U32      max_lba_range_entries;
   void *   current_dsm_descriptor;
   void *   virtual_unmap_buffer;
   U32      physical_unmap_buffer_low;
   U32      physical_unmap_buffer_high;
   void *   unmap_buffer_sgl_pair;
} SATI_UNMAP_PROCESSING_STATE_T;

/**
 * @struct SATI_TRANSLATOR_SEQUENCE
 *
 * @brief This structure contains all of the translation information
 *        associated with a particular request.
 */
typedef struct SATI_TRANSLATOR_SEQUENCE
{
   /**
    * This field contains the sequence type determined by the SATI.
    */
   U8 type;

   /**
    * This field indicates the current state for the sequence.
    */
   U8 state;

   /**
    * This field indicates the data direction (none, read, or write) for
    * the translated request.
    */
   U8 data_direction;

   /**
    * This field contains the SATA/ATA protocol to be utilized during
    * the IO transfer.
    */
   U8 protocol;

   /**
    * This field is utilized for sequences requiring data translation.
    * It specifies the amount of data requested by the caller from the
    * operation.  It's necessary, because at times the user requests less
    * data than is available.  Thus, we need to avoid overrunning the
    * buffer.
    */
   U32 allocation_length;

   /**
    * This field specifies the amount of data that will actually be
    * transfered across the wire for this ATA request.
    */
   U32 ata_transfer_length;

   /**
   * This field specifies the amount of data bytes that have been
   * set in a translation sequence. It will be incremented every time
   * a data byte has been set by a sati translation.
   */
   U16 number_data_bytes_set;

   /**
   * This field indicates whether or not the sense response has been set
   * by the translation sequence.
   */
   BOOL is_sense_response_set;

   /**
    * This field indicates whether or not the translation requires
    * response translation.
    */
   BOOL is_translate_response_required;

   /**
    * This field specifies the remote device context for which this
    * translator sequence is destined.
    */
   SATI_DEVICE_T * device;

   /**
    * This field is utilized to provide the translator with memory space
    * required for translations that utilize multiple requests.
    */
   union {
      U32 translated_command;
      U32 move_sector_count;
      U32 scratch;
      SATI_REASSIGN_BLOCKS_PROCESSING_STATE_T   reassign_blocks_process_state;
      SATI_MODE_SELECT_PROCESSING_STATE_T       process_state;
      SATI_UNMAP_PROCESSING_STATE_T             unmap_process_state;
      SATI_ATAPI_DATA_T                         sati_atapi_data;
   } command_specific_data;

} SATI_TRANSLATOR_SEQUENCE_T;



#endif // _SATI_TRANSLATOR_SEQUENCE_H_