| 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 | } |
| 144 | |
