eni_if.c

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    1 /*
    2  *
    3  * ===================================
    4  * HARP  |  Host ATM Research Platform
    5  * ===================================
    6  *
    7  *
    8  * This Host ATM Research Platform ("HARP") file (the "Software") is
    9  * made available by Network Computing Services, Inc. ("NetworkCS")
   10  * "AS IS".  NetworkCS does not provide maintenance, improvements or
   11  * support of any kind.
   12  *
   13  * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
   14  * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
   15  * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
   16  * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
   17  * In no event shall NetworkCS be responsible for any damages, including
   18  * but not limited to consequential damages, arising from or relating to
   19  * any use of the Software or related support.
   20  *
   21  * Copyright 1994-1998 Network Computing Services, Inc.
   22  *
   23  * Copies of this Software may be made, however, the above copyright
   24  * notice must be reproduced on all copies.
   25  *
   26  *      @(#) $FreeBSD: src/sys/dev/hea/eni_if.c,v 1.5 1999/08/28 00:41:44 peter Exp $
   27  *      @(#) $DragonFly: src/sys/dev/atm/hea/eni_if.c,v 1.7 2008/03/01 22:03:13 swildner Exp $
   28  */
   29 
   30 /*
   31  * Efficient ENI Adapter Support
   32  * -----------------------------
   33  *
   34  * Network interface layer support
   35  *
   36  */
   37 
   38 #include <netproto/atm/kern_include.h>
   39 
   40 #include "eni_stats.h"
   41 #include "eni.h"
   42 #include "eni_suni.h"
   43 #include "eni_var.h"
   44 
   45 static void     eni_get_stats (Eni_unit *);
   46 
   47 /*
   48  * SUNI statistics counters take one of three forms:
   49  *      single byte value       (0x0 - 0xff)
   50  *      two byte value          (0x0 - 0xffff)
   51  *      two + 1/2 (three) byte value
   52  *                              (0x0 - 0x0fffff)
   53  */
   54 #define READ_ONE(x)     ( (eup->eu_suni[(x)] & 0xff) )
   55 
   56 #define READ_TWO(x)     ( (eup->eu_suni[(x)+1] & 0xff) << 8 | \
   57                           (eup->eu_suni[(x)] & 0xff) )
   58 
   59 #define READ_THREE(x)   ( (eup->eu_suni[(x)+2] & 0xf) << 16 | \
   60                           (eup->eu_suni[(x)+1] & 0xff) << 8 | \
   61                           (eup->eu_suni[(x)] & 0xff) )
   62 
   63 /*
   64  * Do an initial read of the error counters without saving them.
   65  * In effect, this will "zero" our idea of the number of errors
   66  * which have occurred since the driver was loaded.
   67  *
   68  * Arguments:
   69  *      eup             pointer to per unit structure
   70  *
   71  * Returns:
   72  *      none
   73  *
   74  */
   75 void
   76 eni_zero_stats(Eni_unit *eup)
   77 {
   78         int     val;
   79 
   80         /*
   81          * Write the SUNI master control register which
   82          * will cause all the statistics counters to be
   83          * loaded.
   84          */
   85         eup->eu_suni[SUNI_MASTER_REG] = eup->eu_suni[SUNI_MASTER_REG];
   86 
   87         /*
   88          * Delay to allow for counter load time...
   89          */
   90         DELAY ( SUNI_DELAY );
   91 
   92         /*
   93          * Statistics counters contain the number of events
   94          * since the last time the counter was read.
   95          */
   96         val = READ_TWO ( SUNI_SECT_BIP_REG );           /* oc3_sect_bip8 */
   97         val = READ_TWO ( SUNI_PATH_BIP_REG );           /* oc3_path_bip8 */
   98         val = READ_THREE ( SUNI_LINE_BIP_REG );         /* oc3_line_bip24 */
   99         val = READ_THREE ( SUNI_LINE_FEBE_REG );        /* oc3_line_febe */
  100         val = READ_TWO ( SUNI_PATH_FEBE_REG );          /* oc3_path_febe */
  101         val = READ_ONE ( SUNI_HECS_REG );               /* oc3_hec_corr */
  102         val = READ_ONE ( SUNI_UHECS_REG );              /* oc3_hec_uncorr */
  103 }
  104 
  105 /*
  106  * Retrieve SUNI stats
  107  *
  108  * Arguments:
  109  *      eup             pointer to per unit structure
  110  *
  111  * Returns:
  112  *      none
  113  *
  114  */
  115 static void
  116 eni_get_stats (Eni_unit *eup)
  117 {
  118         /*
  119          * Write the SUNI master control register which
  120          * will cause all the statistics counters to be
  121          * loaded.
  122          */
  123         eup->eu_suni[SUNI_MASTER_REG] = eup->eu_suni[SUNI_MASTER_REG];
  124 
  125         /*
  126          * Delay to allow for counter load time...
  127          */
  128         DELAY ( 10 );
  129 
  130         /*
  131          * Statistics counters contain the number of events
  132          * since the last time the counter was read.
  133          */
  134         eup->eu_stats.eni_st_oc3.oc3_sect_bip8 +=
  135                         READ_TWO ( SUNI_SECT_BIP_REG );
  136         eup->eu_stats.eni_st_oc3.oc3_path_bip8 +=
  137                         READ_TWO ( SUNI_PATH_BIP_REG );
  138         eup->eu_stats.eni_st_oc3.oc3_line_bip24 +=
  139                         READ_THREE ( SUNI_LINE_BIP_REG );
  140         eup->eu_stats.eni_st_oc3.oc3_line_febe +=
  141                         READ_THREE ( SUNI_LINE_FEBE_REG );
  142         eup->eu_stats.eni_st_oc3.oc3_path_febe +=
  143                         READ_TWO ( SUNI_PATH_FEBE_REG );
  144         eup->eu_stats.eni_st_oc3.oc3_hec_corr +=
  145                         READ_ONE ( SUNI_HECS_REG );
  146         eup->eu_stats.eni_st_oc3.oc3_hec_uncorr +=
  147                         READ_ONE ( SUNI_UHECS_REG );
  148 }
  149 
  150 /*
  151  * Handle netatm core service interface ioctl requests
  152  *
  153  * Called at splnet.
  154  *
  155  * Arguments:
  156  *      code            ioctl function (sub)code
  157  *      data            data to/from ioctl
  158  *      arg             optional code-specific argument
  159  *
  160  * Returns:
  161  *      0               request processed successfully
  162  *      error           request failed - reason code
  163  *
  164  */
  165 int
  166 eni_atm_ioctl(int code, caddr_t data, caddr_t arg)
  167 {
  168         struct atminfreq        *aip = (struct atminfreq *)data;
  169         struct atm_pif          *pip = (struct atm_pif *)arg;
  170         Eni_unit                *eup = (Eni_unit *)pip;
  171         caddr_t                 buf = aip->air_buf_addr;
  172         struct air_vinfo_rsp    *avr;
  173         int                     count, len, buf_len = aip->air_buf_len;
  174         int                     err = 0;
  175         char                    ifname[2*IFNAMSIZ];
  176 
  177         ATM_DEBUG2("eni_atm_ioctl: code=%d, opcode=%d\n",
  178                 code, aip->air_opcode );
  179 
  180         switch ( aip->air_opcode ) {
  181 
  182         case AIOCS_INF_VST:
  183                 /*
  184                  * Get vendor statistics
  185                  */
  186                 if ( eup == NULL )
  187                         return ( ENXIO );
  188                 ksnprintf ( ifname, sizeof(ifname),
  189                     "%s%d", pip->pif_name, pip->pif_unit );
  190 
  191                 /*
  192                  * Cast response structure onto user's buffer
  193                  */
  194                 avr = (struct air_vinfo_rsp *)buf;
  195 
  196                 /*
  197                  * How large is the response structure
  198                  */
  199                 len = sizeof(struct air_vinfo_rsp);
  200 
  201                 /*
  202                  * Sanity check - enough room for response structure?
  203                  */
  204                 if ( buf_len < len )
  205                         return ( ENOSPC );
  206 
  207                 /*
  208                  * Copy interface name into response structure
  209                  */
  210                 if ((err = copyout(ifname, avr->avsp_intf, IFNAMSIZ)) != 0)
  211                         break;
  212 
  213                 /*
  214                  * Advance the buffer address and decrement the size
  215                  */
  216                 buf += len;
  217                 buf_len -= len;
  218 
  219                 /*
  220                  * Get the vendor stats (SUNI) from the hardware
  221                  */
  222                 eni_get_stats ( eup );
  223                 /*
  224                  * Stick as much of it as we have room for
  225                  * into the response
  226                  */
  227                 count = MIN ( sizeof(Eni_stats), buf_len );
  228 
  229                 /*
  230                  * Copy stats into user's buffer. Return value is
  231                  * amount of data copied.
  232                  */
  233                 if ((err = copyout((void *)&eup->eu_stats, buf, count)) != 0)
  234                                 break;
  235                 buf += count;
  236                 buf_len -= count;
  237                 if ( count < sizeof(Eni_stats) )
  238                         err = ENOSPC;
  239 
  240                 /*
  241                  * Record amount we're returning as vendor info...
  242                  */
  243                 if ((err = copyout(&count, &avr->avsp_len, sizeof(int))) != 0)
  244                         break;
  245 
  246                 /*
  247                  * Update the reply pointers and length
  248                  */
  249                 aip->air_buf_addr = buf;
  250                 aip->air_buf_len = buf_len;
  251                 break;
  252 
  253         default:
  254                 err = ENOSYS;           /* Operation not supported */
  255                 break;
  256         }
  257 
  258         return ( err );
  259 
  260 }
  261

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FreeBSD/Linux Kernel Cross Reference sys/dev/atm/hea/eni_if.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/atm/hea/eni_if.c