xref: /freebsd/sys/dev/isci/scil/scic_overview.h (revision 59c8e88e72633afbc47a4ace0d2170d00d51f7dc)
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54 #ifndef _SCIC_OVERVIEW_H_
55 #define _SCIC_OVERVIEW_H_
56 
57 /**
58 
59 @page core_section SCI Core
60 
61 @section scic_introduction_section Introduction
62 
63 The Storage Controller Interface Core (SCIC) provides the underlying fundamental
64 hardware abstractions required to implement a standard SAS/SATA storage driver.
65 
66 The following is a list of features that may be found in a core implementation:
67 -# hardware interrupt handling
68 -# hardware event handling
69 -# hardware state machine handling
70 -# IO and task management state machine handling
71 -# Phy staggered spin up
72 
73 @image latex sci_core.eps "SCI Core Class Diagram" width=16cm
74 
75 @note
76 For the SCU Driver Standard implementation of the SCI Core interface the
77 following definitions should be used to augment the cardinalities described
78 in the previous diagram:
79 -# There are exactly 4 scic_phy objects in the scic_controller.
80 -# There are exactly 4 scic_port objects in the scic_controller.
81 -# There can be a maximum of 4 scic_phy objects managed in a single scic_port.
82 -# The maximum number of supported controllers in a library is a truly flexible
83    value, but the likely maximum number is 4.
84 
85 */
86 
87 #endif // _SCIC_OVERVIEW_H_
88 
89