FreeBSD/Linux Kernel Cross Reference
sys/dev/isci/scil/scif_overview.h

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    #ifndef _SCIF_OVERVIEW_H_
    #define _SCIF_OVERVIEW_H_
    
    /**
    @page framework_page SCI Framework
    
    @section scif_introduction_section Introduction
    
    The SCI Framework component provides SAS and SATA storage specific abstraction
    to any OS driver devoid of this type of functionality. The functionality
    provided by this component is of a higher nature and considered unnecessary
    for some driver environments.  Basically, a user should be able to utilize
    the same SCI Framework with different SCI Core implementations, with the
    little to no changes necessary.
    
    @warning In situations where the SCI framework is utilized, users should NOT
             invoke core methods on core objects for which there are associated
             framework objects and framework methods. Therefore, if a method is
             common to both the core and the framework object, do not invoke the
             core method if utilizing the framework.  Some exceptions to this
             exist and are called out.  It is important to mention that methods
             found only in the core are safe to invoke at times specified per
             that methods definition.
    
    The following is a list of features found in an SCI Framework implementation:
    
    -# SCI Core management
    -# Port configuration scheme enforcement.  There are 2 port configuration
    schemes:
      -# Automatic Port Configuration (APC).  In APC mode the framework will
         allow for any port configuration based on what is physically connected,
         assuming the underlying SCI Core also supports the configuration.
      -# Manual Port Configuration (MPC).  In MPC mode the framework expects the
         user to supply exactly which phys are to be allocated to each specific
         port.  If the discovered direct attached physical connections do not match
         the user supplied map, then an error is raised and the initialization
         process is halted.
    -# Domain Discovery
    -# Domain level resets (i.e. bus reset)
    -# Task management processing
    -# Controller Shutdown management (e.g. release STP affiliations, quiesce IOs)
    -# Remote Device Configuration. Potential features:
      -# SSP: maybe mode selects to set timers or modify DIF settings.
      -# STP: IDENTIFY_DEVICE, SET FEATURES, etc.
     -# SMP: CONTROL type requests to set timers.
   -# SAT Translation (Actually contained in SATI component)
   -# SMP Zoning management
   
   @image latex sci_framework.eps "SCI Framework Class Diagram" width=10cm
   
   @note
   For the SCU Driver Standard implementation of the SCI Framework interface the
   following definitions should be used to augment the cardinalities described
   in the previous diagram:
   -# There are exactly 4 scif_domain objects in the scif_controller.  This
      number directly correlates to the number of scic_port objects in the core.
   -# The maximum number of supported controllers in a library is a truly flexible
      value, but the likely maximum number is 4.
   
    */
   
   #endif // _SCIF_OVERVIEW_H_
   

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