target/linux/generic-2.4/files/crypto/ocf/kirkwood/mvHal/mv_hal/cpu/mvCpuL2Cntrs.c

   1 /*
   2  * This program is free software; you can redistribute it and/or modify
   3  * it under the terms of the GNU General Public License as published by
   4  * the Free Software Foundation; either version 2 of the License, or
   5  * (at your option) any later version.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  15  */
  16
  17 #include "mvOs.h"
  18 #include "mvCpuL2Cntrs.h"
  19
  20
  21
  22 MV_CPU_L2_CNTRS_ENTRY   mvCpuL2CntrsTbl[MV_CPU_L2_CNTRS_NUM];
  23
  24 MV_CPU_L2_CNTRS_EVENT*  mvCpuL2CntrsEventTbl[128];
  25
  26 void mvCpuL2CntrsReset(void)
  27 {
  28     MV_U32 reg = 0;
  29
  30     MV_ASM ("mcr p15, 6, %0, c15, c13, 0" : : "r" (reg));
  31     MV_ASM ("mcr p15, 6, %0, c15, c13, 1" : : "r" (reg));
  32     MV_ASM ("mcr p15, 6, %0, c15, c13, 2" : : "r" (reg));
  33     MV_ASM ("mcr p15, 6, %0, c15, c13, 3" : : "r" (reg));
  34 }
  35
  36 static void mvCpuL2CntrConfig(int counter, int op)
  37 {
  38     MV_U32 reg =  (1 << op) | 0x1; /*enable*/
  39
  40     switch(counter)
  41     {
  42         case 0:
  43          MV_ASM ("mcr p15, 6, %0, c15, c12, 0" : : "r" (reg));
  44          return;
  45
  46         case 1:
  47          MV_ASM ("mcr p15, 6, %0, c15, c12, 1" : : "r" (reg));
  48          return;
  49
  50         default:
  51             mvOsPrintf("mvCpuL2CntrConfig: bad counter number (%d)\n", counter);
  52     }
  53     return;
  54 }
  55
  56 void mvCpuL2CntrsEventClear(MV_CPU_L2_CNTRS_EVENT* pEvent)
  57 {
  58     int i;
  59
  60     for(i=0; i<MV_CPU_L2_CNTRS_NUM; i++)
  61     {
  62         pEvent->counters_sum[i] = 0;
  63     }
  64     pEvent->num_of_measurements = 0;
  65 }
  66
  67
  68 MV_CPU_L2_CNTRS_EVENT* mvCpuL2CntrsEventCreate(char* name, MV_U32 print_threshold)
  69 {
  70     int                     i;
  71     MV_CPU_L2_CNTRS_EVENT*  event = mvOsMalloc(sizeof(MV_CPU_L2_CNTRS_EVENT));
  72
  73     if(event)
  74     {
  75         strncpy(event->name, name, sizeof(event->name));
  76         event->num_of_measurements = 0;
  77         event->avg_sample_count = print_threshold;
  78         for(i=0; i<MV_CPU_L2_CNTRS_NUM; i++)
  79         {
  80             event->counters_before[i] = 0;
  81             event->counters_after[i] = 0;
  82             event->counters_sum[i] = 0;
  83         }
  84     }
  85     return event;
  86 }
  87
  88 void    mvCpuL2CntrsEventDelete(MV_CPU_L2_CNTRS_EVENT* event)
  89 {
  90     if(event != NULL)
  91         mvOsFree(event);
  92 }
  93
  94
  95 MV_STATUS   mvCpuL2CntrsProgram(int counter, MV_CPU_L2_CNTRS_OPS op,
  96                                  char* name, MV_U32 overhead)
  97 {
  98     strncpy(mvCpuL2CntrsTbl[counter].name, name, sizeof(mvCpuL2CntrsTbl[counter].name));
  99     mvCpuL2CntrsTbl[counter].operation = op;
 100     mvCpuL2CntrsTbl[counter].opIdx = op;
 101     mvCpuL2CntrsTbl[counter].overhead = overhead;
 102     mvCpuL2CntrConfig(counter, op);
 103     mvOsPrintf("CPU L2 Counter %d: operation=%d, overhead=%d\n",
 104                         counter, op, overhead);
 105     return MV_OK;
 106 }
 107
 108 void    mvCpuL2CntrsShow(MV_CPU_L2_CNTRS_EVENT* pEvent)
 109 {
 110     int     i;
 111     MV_U64  counters_avg;
 112
 113     if(pEvent->num_of_measurements < pEvent->avg_sample_count)
 114         return;
 115
 116     mvOsPrintf("%16s: ", pEvent->name);
 117     for(i=0; i<MV_CPU_L2_CNTRS_NUM; i++)
 118     {
 119         counters_avg = mvOsDivMod64(pEvent->counters_sum[i],
 120                                     pEvent->num_of_measurements, NULL);
 121
 122         if(counters_avg >= mvCpuL2CntrsTbl[i].overhead)
 123             counters_avg -= mvCpuL2CntrsTbl[i].overhead;
 124         else
 125             counters_avg = 0;
 126
 127         mvOsPrintf("%s=%5llu, ", mvCpuL2CntrsTbl[i].name, counters_avg);
 128     }
 129     mvOsPrintf("\n");
 130     mvCpuL2CntrsEventClear(pEvent);
 131     mvCpuL2CntrsReset();
 132 }
 133
 134 void    mvCpuL2CntrsStatus(void)
 135 {
 136     int i;
 137
 138     for(i=0; i<MV_CPU_L2_CNTRS_NUM; i++)
 139     {
 140         mvOsPrintf("#%d: %s, overhead=%d\n",
 141             i, mvCpuL2CntrsTbl[i].name, mvCpuL2CntrsTbl[i].overhead);
 142     }
 143 }