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         /* Does this Octeon support crypto acceleration using COP2? */
  50         OCTEON_FEATURE_CRYPTO,
  51         OCTEON_FEATURE_DORM_CRYPTO,
  52         /* Does this Octeon support PCI express? */
  53         OCTEON_FEATURE_PCIE,
  54         /* Does this Octeon support SRIOs */
  55         OCTEON_FEATURE_SRIO,
  56         /*  Does this Octeon support Interlaken */
  57         OCTEON_FEATURE_ILK,
  58         /* Some Octeon models support internal memory for storing
  59          * cryptographic keys */
  60         OCTEON_FEATURE_KEY_MEMORY,
  61         /* Octeon has a LED controller for banks of external LEDs */
  62         OCTEON_FEATURE_LED_CONTROLLER,
  63         /* Octeon has a trace buffer */
  64         OCTEON_FEATURE_TRA,
  65         /* Octeon has a management port */
  66         OCTEON_FEATURE_MGMT_PORT,
  67         /* Octeon has a raid unit */
  68         OCTEON_FEATURE_RAID,
  69         /* Octeon has a builtin USB */
  70         OCTEON_FEATURE_USB,
  71         /* Octeon IPD can run without using work queue entries */
  72         OCTEON_FEATURE_NO_WPTR,
  73         /* Octeon has DFA state machines */
  74         OCTEON_FEATURE_DFA,
  75         /* Octeon MDIO block supports clause 45 transactions for 10
  76          * Gig support */
  77         OCTEON_FEATURE_MDIO_CLAUSE_45,
  78         /*
  79          *  CN52XX and CN56XX used a block named NPEI for PCIe
  80          *  access. Newer chips replaced this with SLI+DPI.
  81          */
  82         OCTEON_FEATURE_NPEI,
  83         OCTEON_FEATURE_HFA,
  84         OCTEON_FEATURE_DFM,
  85         OCTEON_FEATURE_CIU2,
  86         OCTEON_MAX_FEATURE
  87 };
  88
  89 static inline int cvmx_fuse_read(int fuse);
  90
  91 /**
  92  * Determine if the current Octeon supports a specific feature. These
  93  * checks have been optimized to be fairly quick, but they should still
  94  * be kept out of fast path code.
  95  *
  96  * @feature: Feature to check for. This should always be a constant so the
  97  *                compiler can remove the switch statement through optimization.
  98  *
  99  * Returns Non zero if the feature exists. Zero if the feature does not
 100  *         exist.
 101  */
 102 static inline int octeon_has_feature(enum octeon_feature feature)
 103 {
 104         switch (feature) {
 105         case OCTEON_FEATURE_SAAD:
 106                 return !OCTEON_IS_MODEL(OCTEON_CN3XXX);
 107
 108         case OCTEON_FEATURE_ZIP:
 109                 if (OCTEON_IS_MODEL(OCTEON_CN30XX)
 110                     || OCTEON_IS_MODEL(OCTEON_CN50XX)
 111                     || OCTEON_IS_MODEL(OCTEON_CN52XX))
 112                         return 0;
 113                 else if (OCTEON_IS_MODEL(OCTEON_CN38XX_PASS1))
 114                         return 1;
 115                 else
 116                         return !cvmx_fuse_read(121);
 117
 118         case OCTEON_FEATURE_CRYPTO:
 119                 if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
 120                         union cvmx_mio_fus_dat2 fus_2;
 121                         fus_2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
 122                         if (fus_2.s.nocrypto || fus_2.s.nomul) {
 123                                 return 0;
 124                         } else if (!fus_2.s.dorm_crypto) {
 125                                 return 1;
 126                         } else {
 127                                 union cvmx_rnm_ctl_status st;
 128                                 st.u64 = cvmx_read_csr(CVMX_RNM_CTL_STATUS);
 129                                 return st.s.eer_val;
 130                         }
 131                 } else {
 132                         return !cvmx_fuse_read(90);
 133                 }
 134
 135         case OCTEON_FEATURE_DORM_CRYPTO:
 136                 if (OCTEON_IS_MODEL(OCTEON_CN6XXX)) {
 137                         union cvmx_mio_fus_dat2 fus_2;
 138                         fus_2.u64 = cvmx_read_csr(CVMX_MIO_FUS_DAT2);
 139                         return !fus_2.s.nocrypto && !fus_2.s.nomul && fus_2.s.dorm_crypto;
 140                 } else {
 141                         return 0;
 142                 }
 143
 144         case OCTEON_FEATURE_PCIE:
 145                 return OCTEON_IS_MODEL(OCTEON_CN56XX)
 146                         || OCTEON_IS_MODEL(OCTEON_CN52XX)
 147                         || OCTEON_IS_MODEL(OCTEON_CN6XXX);
 148
 149         case OCTEON_FEATURE_SRIO:
 150                 return OCTEON_IS_MODEL(OCTEON_CN63XX)
 151                         || OCTEON_IS_MODEL(OCTEON_CN66XX);
 152
 153         case OCTEON_FEATURE_ILK:
 154                 return (OCTEON_IS_MODEL(OCTEON_CN68XX));
 155
 156         case OCTEON_FEATURE_KEY_MEMORY:
 157                 return OCTEON_IS_MODEL(OCTEON_CN38XX)
 158                         || OCTEON_IS_MODEL(OCTEON_CN58XX)
 159                         || OCTEON_IS_MODEL(OCTEON_CN56XX)
 160                         || OCTEON_IS_MODEL(OCTEON_CN6XXX);
 161
 162         case OCTEON_FEATURE_LED_CONTROLLER:
 163                 return OCTEON_IS_MODEL(OCTEON_CN38XX)
 164                         || OCTEON_IS_MODEL(OCTEON_CN58XX)
 165                         || OCTEON_IS_MODEL(OCTEON_CN56XX);
 166
 167         case OCTEON_FEATURE_TRA:
 168                 return !(OCTEON_IS_MODEL(OCTEON_CN30XX)
 169                          || OCTEON_IS_MODEL(OCTEON_CN50XX));
 170         case OCTEON_FEATURE_MGMT_PORT:
 171                 return OCTEON_IS_MODEL(OCTEON_CN56XX)
 172                         || OCTEON_IS_MODEL(OCTEON_CN52XX)
 173                         || OCTEON_IS_MODEL(OCTEON_CN6XXX);
 174
 175         case OCTEON_FEATURE_RAID:
 176                 return OCTEON_IS_MODEL(OCTEON_CN56XX)
 177                         || OCTEON_IS_MODEL(OCTEON_CN52XX)
 178                         || OCTEON_IS_MODEL(OCTEON_CN6XXX);
 179
 180         case OCTEON_FEATURE_USB:
 181                 return !(OCTEON_IS_MODEL(OCTEON_CN38XX)
 182                          || OCTEON_IS_MODEL(OCTEON_CN58XX));
 183
 184         case OCTEON_FEATURE_NO_WPTR:
 185                 return (OCTEON_IS_MODEL(OCTEON_CN56XX)
 186                         || OCTEON_IS_MODEL(OCTEON_CN52XX)
 187                         || OCTEON_IS_MODEL(OCTEON_CN6XXX))
 188                           && !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X)
 189                           && !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X);
 190
 191         case OCTEON_FEATURE_DFA:
 192                 if (!OCTEON_IS_MODEL(OCTEON_CN38XX)
 193                     && !OCTEON_IS_MODEL(OCTEON_CN31XX)
 194                     && !OCTEON_IS_MODEL(OCTEON_CN58XX))
 195                         return 0;
 196                 else if (OCTEON_IS_MODEL(OCTEON_CN3020))
 197                         return 0;
 198                 else
 199                         return !cvmx_fuse_read(120);
 200
 201         case OCTEON_FEATURE_HFA:
 202                 if (!OCTEON_IS_MODEL(OCTEON_CN6XXX))
 203                         return 0;
 204                 else
 205                         return !cvmx_fuse_read(90);
 206
 207         case OCTEON_FEATURE_DFM:
 208                 if (!(OCTEON_IS_MODEL(OCTEON_CN63XX)
 209                       || OCTEON_IS_MODEL(OCTEON_CN66XX)))
 210                         return 0;
 211                 else
 212                         return !cvmx_fuse_read(90);
 213
 214         case OCTEON_FEATURE_MDIO_CLAUSE_45:
 215                 return !(OCTEON_IS_MODEL(OCTEON_CN3XXX)
 216                          || OCTEON_IS_MODEL(OCTEON_CN58XX)
 217                          || OCTEON_IS_MODEL(OCTEON_CN50XX));
 218
 219         case OCTEON_FEATURE_NPEI:
 220                 return OCTEON_IS_MODEL(OCTEON_CN56XX)
 221                         || OCTEON_IS_MODEL(OCTEON_CN52XX);
 222
 223         case OCTEON_FEATURE_PKND:
 224                 return OCTEON_IS_MODEL(OCTEON_CN68XX);
 225
 226         case OCTEON_FEATURE_CN68XX_WQE:
 227                 return OCTEON_IS_MODEL(OCTEON_CN68XX);
 228
 229         case OCTEON_FEATURE_CIU2:
 230                 return OCTEON_IS_MODEL(OCTEON_CN68XX);
 231
 232         default:
 233                 break;
 234         }
 235         return 0;
 236 }
 237
 238 #endif /* __OCTEON_FEATURE_H__ */