drivers/scsi/isci/core/sci_controller_constants.h

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   7  * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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  55
  56 #ifndef _SCI_CONTROLLER_CONSTANTS_H_
  57 #define _SCI_CONTROLLER_CONSTANTS_H_
  58
  59 /**
  60  * This file contains constant values that change based on the type of core or
  61  *    framework being managed.  These constants are exported in order to
  62  *    provide the user with information as to the bounds (i.e. how many) of
  63  *    specific objects.
  64  *
  65  *
  66  */
  67
  68 #ifndef SCI_MAX_PHYS
  69 /**
  70  *
  71  *
  72  * This constant defines the maximum number of phy objects that can be
  73  * supported for the SCU Driver Standard (SDS) library.  This is tied directly
  74  * to silicon capabilities.
  75  */
  76 #define SCI_MAX_PHYS  (4)
  77 #endif
  78
  79 #ifndef SCI_MAX_PORTS
  80 /**
  81  *
  82  *
  83  * This constant defines the maximum number of port objects that can be
  84  * supported for the SCU Driver Standard (SDS) library.  This is tied directly
  85  * to silicon capabilities.
  86  */
  87 #define SCI_MAX_PORTS SCI_MAX_PHYS
  88 #endif
  89
  90 #ifndef SCI_MIN_SMP_PHYS
  91 /**
  92  *
  93  *
  94  * This constant defines the minimum number of SMP phy objects that can be
  95  * supported for a single expander level. This was determined by using 36
  96  * physical phys and room for 2 virtual phys.
  97  */
  98 #define SCI_MIN_SMP_PHYS  (38)
  99 #endif
 100
 101 #ifndef SCI_MAX_SMP_PHYS
 102 /**
 103  *
 104  *
 105  * This constant defines the maximum number of SMP phy objects that can be
 106  * supported for the SCU Driver Standard (SDS) library. This number can be
 107  * increased if required.
 108  */
 109 #define SCI_MAX_SMP_PHYS  (384)
 110 #endif
 111
 112 #ifndef SCI_MAX_REMOTE_DEVICES
 113 /**
 114  *
 115  *
 116  * This constant defines the maximum number of remote device objects that can
 117  * be supported for the SCU Driver Standard (SDS) library.  This is tied
 118  * directly to silicon capabilities.
 119  */
 120 #define SCI_MAX_REMOTE_DEVICES (256)
 121 #endif
 122
 123 #ifndef SCI_MIN_REMOTE_DEVICES
 124 /**
 125  *
 126  *
 127  * This constant defines the minimum number of remote device objects that can
 128  * be supported for the SCU Driver Standard (SDS) library.  This # can be
 129  * configured for minimum memory environments to any value less than
 130  * SCI_MAX_REMOTE_DEVICES
 131  */
 132 #define SCI_MIN_REMOTE_DEVICES (16)
 133 #endif
 134
 135 #ifndef SCI_MAX_IO_REQUESTS
 136 /**
 137  *
 138  *
 139  * This constant defines the maximum number of IO request objects that can be
 140  * supported for the SCU Driver Standard (SDS) library.  This is tied directly
 141  * to silicon capabilities.
 142  */
 143 #define SCI_MAX_IO_REQUESTS (256)
 144 #endif
 145
 146 #ifndef SCI_MIN_IO_REQUESTS
 147 /**
 148  *
 149  *
 150  * This constant defines the minimum number of IO request objects that can be
 151  * supported for the SCU Driver Standard (SDS) library.  This # can be
 152  * configured for minimum memory environments to any value less than
 153  * SCI_MAX_IO_REQUESTS.
 154  */
 155 #define SCI_MIN_IO_REQUESTS (1)
 156 #endif
 157
 158 #ifndef SCI_MAX_MSIX_MESSAGES
 159 /**
 160  *
 161  *
 162  * This constant defines the maximum number of MSI-X interrupt vectors/messages
 163  * supported for an SCU hardware controller instance.
 164  */
 165 #define SCI_MAX_MSIX_MESSAGES  (2)
 166 #endif
 167
 168 #ifndef SCI_MAX_SCATTER_GATHER_ELEMENTS
 169 /**
 170  *
 171  *
 172  * This constant defines the maximum number of Scatter-Gather Elements to be
 173  * used by any SCI component.
 174  */
 175 #define SCI_MAX_SCATTER_GATHER_ELEMENTS 130
 176 #endif
 177
 178 #ifndef SCI_MIN_SCATTER_GATHER_ELEMENTS
 179 /**
 180  *
 181  *
 182  * This constant defines the minimum number of Scatter-Gather Elements to be
 183  * used by any SCI component.
 184  */
 185 #define SCI_MIN_SCATTER_GATHER_ELEMENTS 1
 186 #endif
 187
 188 /**
 189  *
 190  *
 191  * This constant defines the maximum number of controllers that can occur in a
 192  * single silicon package.
 193  */
 194 #define SCI_MAX_CONTROLLERS 2
 195
 196 /**
 197  *
 198  *
 199  * The maximum number of supported domain objects is currently tied to the
 200  * maximum number of support port objects.
 201  */
 202 #define SCI_MAX_DOMAINS  SCI_MAX_PORTS
 203
 204
 205 #endif  /* _SCI_CONTROLLER_CONSTANTS_H_ */
 206