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

     /*-
      * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
      *
      * 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.
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     * 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
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     * 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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     *
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     * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    #ifndef _SCI_CONTROLLER_CONSTANTS_H_
    #define _SCI_CONTROLLER_CONSTANTS_H_
    
    #include <sys/param.h>
    
    /**
     * @file
     *
     * @brief This file contains constant values that change based on the type
     *        of core or framework being managed.  These constants are exported
     *        in order to provide the user with information as to the bounds
     *        (i.e. how many) of specific objects.
     */
    
    #ifdef __cplusplus
    extern "C" {
    #endif // __cplusplus
    
    #ifdef SCIC_SDS_4_ENABLED
    
    #ifndef SCI_MAX_PHYS
    /**
     * This constant defines the maximum number of phy objects that can be
     * supported for the SCU Driver Standard (SDS) library.  This is tied
     * directly to silicon capabilities.
     */
    #define SCI_MAX_PHYS  (4)
    #endif
    
    #ifndef SCI_MAX_PORTS
    /**
     * This constant defines the maximum number of port objects that can be
     * supported for the SCU Driver Standard (SDS) library.  This is tied
     * directly to silicon capabilities.
     */
    #define SCI_MAX_PORTS SCI_MAX_PHYS
    #endif
    
    #ifndef SCI_MIN_SMP_PHYS
    /**
     * This constant defines the minimum number of SMP phy objects that
     * can be supported for a single expander level.
     * This was determined by using 36 physical phys and room for 2 virtual
     * phys.
    */
   #define SCI_MIN_SMP_PHYS  (38)
   #endif
   
   #ifndef SCI_MAX_SMP_PHYS
   /**
    * This constant defines the maximum number of SMP phy objects that
    * can be supported for the SCU Driver Standard (SDS) library.
    * This number can be increased if required.
    */
   #define SCI_MAX_SMP_PHYS  (384)
   #endif
   
   #ifndef SCI_MAX_REMOTE_DEVICES
   /**
    * This constant defines the maximum number of remote device objects that
    * can be supported for the SCU Driver Standard (SDS) library.  This is tied
    * directly to silicon capabilities.
    */
   #define SCI_MAX_REMOTE_DEVICES (256)
   #endif
   
   #ifndef SCI_MIN_REMOTE_DEVICES
   /**
    * This constant defines the minimum number of remote device objects that
    * can be supported for the SCU Driver Standard (SDS) library.  This # can
    * be configured for minimum memory environments to any value less than
    * SCI_MAX_REMOTE_DEVICES
    */
   #define SCI_MIN_REMOTE_DEVICES (16)
   #endif
   
   #ifndef SCI_MAX_IO_REQUESTS
   /**
    * This constant defines the maximum number of IO request objects that
    * can be supported for the SCU Driver Standard (SDS) library.  This is tied
    * directly to silicon capabilities.
    */
   #define SCI_MAX_IO_REQUESTS (256)
   #endif
   
   #ifndef SCI_MIN_IO_REQUESTS
   /**
    * This constant defines the minimum number of IO request objects that
    * can be supported for the SCU Driver Standard (SDS) library.  This #
    * can be configured for minimum memory environments to any value less
    * than SCI_MAX_IO_REQUESTS.
    */
   #define SCI_MIN_IO_REQUESTS (1)
   #endif
   
   #ifndef SCI_MAX_SCATTER_GATHER_ELEMENTS
   /**
    * This constant defines the maximum number of Scatter-Gather Elements
    * to be used by any SCI component.
    *
    * Note: number of elements must be an even number, since descriptors
    * posted to hardware always contain pairs of elements (with second
    * element set to zeroes if not needed).
    */
   #define __MAXPHYS_ELEMENTS ((maxphys / PAGE_SIZE) + 1)
   #define SCI_MAX_SCATTER_GATHER_ELEMENTS  ((__MAXPHYS_ELEMENTS + 1) & ~0x1)
   #endif
   
   #ifndef SCI_MIN_SCATTER_GATHER_ELEMENTS
   /**
    * This constant defines the minimum number of Scatter-Gather Elements
    * to be used by any SCI component.
    */
   #define SCI_MIN_SCATTER_GATHER_ELEMENTS 1
   #endif
   
   #else // SCIC_SDS_4_ENABLED
   
   #error "SCI Core configuration left unspecified (e.g. SCIC_SDS_4_ENABLED)"
   
   #endif // SCIC_SDS_4_ENABLED
   
   /**
    * This constant defines the maximum number of PCI devices that can be supported
    * by the driver.
    */
   #define SCI_MAX_PCI_DEVICES (2)
   
   /**
    * This constant defines the maximum number of controllers that can
    * occur in a single silicon package.
    */
   #define SCI_MAX_CONTROLLERS_PER_PCI_DEVICE  (2)
   
   /**
    * This constant defines the maximum number of controllers that can
    * be supported by a library object.  The user specified maximum controller
    * count must be less than or equal to this number.  This is a driver
    * specific constant that is not tied to silicon capabilities.
    */
   #if !defined(SCI_MAX_CONTROLLERS)
   #define SCI_MAX_CONTROLLERS  (2)
   #endif
   
   #ifndef SCI_MAX_MSIX_MESSAGES_PER_CONTROLLER
   /**
    * This constant defines the maximum number of MSI-X interrupt vectors/messages
    * supported for an SCU hardware controller instance.
    */
   #define SCI_MAX_MSIX_MESSAGES_PER_CONTROLLER  (2)
   #endif
   
   /**
    * This constant defines the maximum number of MSI-X interrupt vectors/messages
    * supported for an SCU device.
    */
   #define SCI_MAX_MSIX_MESSAGES \
       (SCI_MAX_MSIX_MESSAGES_PER_CONTROLLER * SCI_MAX_CONTROLLERS)
   
   /**
    * The maximum number of supported domain objects is currently tied to the
    * maximum number of support port objects.
    */
   #define SCI_MAX_DOMAINS  SCI_MAX_PORTS
   
   #ifdef __cplusplus
   }
   #endif // __cplusplus
   
   #endif // _SCI_CONTROLLER_CONSTANTS_H_
   

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