arch/mips/include/asm/octeon/octeon-feature.h

   1 /***********************license start***************
   2  * Author: Cavium Networks
   3  *
   4  * Contact: support@caviumnetworks.com
   5  * This file is part of the OCTEON SDK
   6  *
   7  * Copyright (c) 2003-2008 Cavium Networks
   8  *
   9  * This file is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License, Version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This file is distributed in the hope that it will be useful, but
  14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  16  * NONINFRINGEMENT.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this file; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  22  * or visit http://www.gnu.org/licenses/.
  23  *
  24  * This file may also be available under a different license from Cavium.
  25  * Contact Cavium Networks for more information
  26  ***********************license end**************************************/
  27
  28 /*
  29  * File defining checks for different Octeon features.
  30  */
  31
  32 #ifndef __OCTEON_FEATURE_H__
  33 #define __OCTEON_FEATURE_H__
  34 #include <asm/octeon/cvmx-mio-defs.h>
  35 #include <asm/octeon/cvmx-rnm-defs.h>
  36
  37 enum octeon_feature {
  38         /* CN68XX uses port kinds for packet interface */
  39         OCTEON_FEATURE_PKND,
  40         /* CN68XX has different fields in word0 - word2 */
  41         OCTEON_FEATURE_CN68XX_WQE,
  42         /*
  43          * Octeon models in the CN5XXX family and higher support
  44          * atomic add instructions to memory (saa/saad).
  45          */
  46         OCTEON_FEATURE_SAAD,
  47         /* Does this Octeon support the ZIP offload engine? */
  48         OCTEON_FEATURE_ZIP,
  49         OCTEON_FEATURE_DORM_CRYPTO,
  50         /* Does this Octeon support PCI express? */
  51         OCTEON_FEATURE_PCIE,
  52         /* Does this Octeon support SRIOs */
  53         OCTEON_FEATURE_SRIO,
  54         /*  Does this Octeon support Interlaken */
  55         OCTEON_FEATURE_ILK,
  56         /* Some Octeon models support internal memory for storing
  57          * cryptographic keys */
  58         OCTEON_FEATURE_KEY_MEMORY,
  59         /* Octeon has a LED controller for banks of external LEDs */
  60         OCTEON_FEATURE_LED_CONTROLLER,
  61         /* Octeon has a trace buffer */
  62         OCTEON_FEATURE_TRA,
  63         /* Octeon has a management port */
  64         OCTEON_FEATURE_MGMT_PORT,
  65         /* Octeon has a raid unit */
  66         OCTEON_FEATURE_RAID,
  67         /* Octeon has a builtin USB */
  68         OCTEON_FEATURE_USB,
  69         /* Octeon IPD can run without using work queue entries */
  70         OCTEON_FEATURE_NO_WPTR,
  71         /* Octeon has DFA state machines */
  72         OCTEON_FEATURE_DFA,
  73         /* Octeon MDIO block supports clause 45 transactions for 10
  74          * Gig support */
  75         OCTEON_FEATURE_MDIO_CLAUSE_45,
  76         /*
  77          *  CN52XX and CN56XX used a block named NPEI for PCIe
  78          *  access. Newer chips replaced this with SLI+DPI.
  79          */
  80         OCTEON_FEATURE_NPEI,
  81         OCTEON_FEATURE_HFA,
  82         OCTEON_FEATURE_DFM,
  83         OCTEON_FEATURE_CIU2,
  84         OCTEON_FEATURE_CIU3,
  85         /* Octeon has FPA first seen on 78XX */
  86         OCTEON_FEATURE_FPA3,
  87         OCTEON_FEATURE_FAU,
  88         OCTEON_MAX_FEATURE
  89 };
  90
  91 enum octeon_feature_bits {
  92         OCTEON_HAS_CRYPTO = 0x0001,     /* Crypto acceleration using COP2 */
  93 };
  94 extern enum octeon_feature_bits __octeon_feature_bits;
  95
  96 /**
  97  * octeon_has_crypto() - Check if this OCTEON has crypto acceleration support.
  98  *
  99  * Returns: Non-zero if the feature exists. Zero if the feature does not exist.
 100  */
 101 static inline int octeon_has_crypto(void)
 102 {
 103         return __octeon_feature_bits & OCTEON_HAS_CRYPTO;
 104 }
 105
 106 /**
 107  * Determine if the current Octeon supports a specific feature. These
 108  * checks have been optimized to be fairly quick, but they should still
 109  * be kept out of fast path code.
 110  *
 111  * @feature: Feature to check for. This should always be a constant so the
 112  *                compiler can remove the switch statement through optimization.
 113  *
 114  * Returns Non zero if the feature exists. Zero if the feature does not
 115  *         exist.
 116  */
 117 static inline bool octeon_has_feature(enum octeon_feature feature)
 118 {
 119         switch (feature) {
 120         case OCTEON_FEATURE_SAAD:
 121                 return !OCTEON_IS_MODEL(OCTEON_CN3XXX);
 122
 123         case OCTEON_FEATURE_DORM_CRYPTO:
 124                 if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
 125                         union cvmx_mio_fus_dat2 fus_2;
 126                         fus_2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
 127                         return !fus_2.s.nocrypto && !fus_2.s.nomul && fus_2.s.dorm_crypto;
 128                 } else {
 129                         return false;
 130                 }
 131
 132         case OCTEON_FEATURE_PCIE:
 133                 return OCTEON_IS_MODEL(OCTEON_CN56XX)
 134                         || OCTEON_IS_MODEL(OCTEON_CN52XX)
 135                         || OCTEON_IS_MODEL(OCTEON_CN6XXX)
 136                         || OCTEON_IS_MODEL(OCTEON_CN7XXX);
 137
 138         case OCTEON_FEATURE_SRIO:
 139                 return OCTEON_IS_MODEL(OCTEON_CN63XX)
 140                         || OCTEON_IS_MODEL(OCTEON_CN66XX);
 141
 142         case OCTEON_FEATURE_ILK:
 143                 return (OCTEON_IS_MODEL(OCTEON_CN68XX));
 144
 145         case OCTEON_FEATURE_KEY_MEMORY:
 146                 return OCTEON_IS_MODEL(OCTEON_CN38XX)
 147                         || OCTEON_IS_MODEL(OCTEON_CN58XX)
 148                         || OCTEON_IS_MODEL(OCTEON_CN56XX)
 149                         || OCTEON_IS_MODEL(OCTEON_CN6XXX);
 150
 151         case OCTEON_FEATURE_LED_CONTROLLER:
 152                 return OCTEON_IS_MODEL(OCTEON_CN38XX)
 153                         || OCTEON_IS_MODEL(OCTEON_CN58XX)
 154                         || OCTEON_IS_MODEL(OCTEON_CN56XX);
 155
 156         case OCTEON_FEATURE_TRA:
 157                 return !(OCTEON_IS_MODEL(OCTEON_CN30XX)
 158                          || OCTEON_IS_MODEL(OCTEON_CN50XX));
 159         case OCTEON_FEATURE_MGMT_PORT:
 160                 return OCTEON_IS_MODEL(OCTEON_CN56XX)
 161                         || OCTEON_IS_MODEL(OCTEON_CN52XX)
 162                         || OCTEON_IS_MODEL(OCTEON_CN6XXX);
 163
 164         case OCTEON_FEATURE_RAID:
 165                 return OCTEON_IS_MODEL(OCTEON_CN56XX)
 166                         || OCTEON_IS_MODEL(OCTEON_CN52XX)
 167                         || OCTEON_IS_MODEL(OCTEON_CN6XXX);
 168
 169         case OCTEON_FEATURE_USB:
 170                 return !(OCTEON_IS_MODEL(OCTEON_CN38XX)
 171                          || OCTEON_IS_MODEL(OCTEON_CN58XX));
 172
 173         case OCTEON_FEATURE_NO_WPTR:
 174                 return (OCTEON_IS_MODEL(OCTEON_CN56XX)
 175                         || OCTEON_IS_MODEL(OCTEON_CN52XX)
 176                         || OCTEON_IS_MODEL(OCTEON_CN6XXX))
 177                           && !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X)
 178                           && !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X);
 179
 180         case OCTEON_FEATURE_MDIO_CLAUSE_45:
 181                 return !(OCTEON_IS_MODEL(OCTEON_CN3XXX)
 182                          || OCTEON_IS_MODEL(OCTEON_CN58XX)
 183                          || OCTEON_IS_MODEL(OCTEON_CN50XX));
 184
 185         case OCTEON_FEATURE_NPEI:
 186                 return OCTEON_IS_MODEL(OCTEON_CN56XX)
 187                         || OCTEON_IS_MODEL(OCTEON_CN52XX);
 188
 189         case OCTEON_FEATURE_PKND:
 190                 return OCTEON_IS_MODEL(OCTEON_CN68XX);
 191
 192         case OCTEON_FEATURE_CN68XX_WQE:
 193                 return OCTEON_IS_MODEL(OCTEON_CN68XX);
 194
 195         case OCTEON_FEATURE_CIU2:
 196                 return OCTEON_IS_MODEL(OCTEON_CN68XX);
 197         case OCTEON_FEATURE_CIU3:
 198         case OCTEON_FEATURE_FPA3:
 199                 return OCTEON_IS_MODEL(OCTEON_CN78XX)
 200                         || OCTEON_IS_MODEL(OCTEON_CNF75XX)
 201                         || OCTEON_IS_MODEL(OCTEON_CN73XX);
 202         case OCTEON_FEATURE_FAU:
 203                 return !(OCTEON_IS_MODEL(OCTEON_CN78XX)
 204                          || OCTEON_IS_MODEL(OCTEON_CNF75XX)
 205                          || OCTEON_IS_MODEL(OCTEON_CN73XX));
 206
 207         default:
 208                 break;
 209         }
 210         return false;
 211 }
 212
 213 #endif /* __OCTEON_FEATURE_H__ */