freebsd-dev/sys/dev/isci/scil/scif_overview.h
Jim Harris f11c7f6305 Add isci(4) driver for amd64 and i386 targets.
The isci driver is for the integrated SAS controller in the Intel C600
(Patsburg) chipset.  Source files in sys/dev/isci directory are
FreeBSD-specific, and sys/dev/isci/scil subdirectory contains
an OS-agnostic library (SCIL) published by Intel to control the SAS
controller.  This library is used primarily as-is in this driver, with
some post-processing to better integrate into the kernel build
environment.

isci.4 and a README in the sys/dev/isci directory contain a few
additional details.

This driver is only built for amd64 and i386 targets.

Sponsored by: Intel
Reviewed by: scottl
Approved by: scottl
2012-01-31 19:38:18 +00:00

117 lines
5.2 KiB
C

/*-
* 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.
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* it under the terms of version 2 of the GNU General Public License as
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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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_