minidol/hsrc/main.c

   1 /* Epiphany Host Application */
   2
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <unistd.h>
   7 #include <time.h>
   8
   9 #include "e-hal.h"
  10
  11 /* common data structures */
  12 #include "../shared.h"
  13
  14 #define FAIL(...) { fprintf(stderr, __VA_ARGS__); exit(1); }
  15 #define SHM_OFFSET 0x01000000
  16
  17 #define ROW(X) (X/4)
  18 #define COL(X) (X%4)
  19
  20 #define NUM_PROGRAMS    2
  21
  22 /* programs to run */
  23 char programs[NUM_PROGRAMS][64] = {
  24         "bin/Square.srec",
  25         "bin/Gen.srec",
  26 };
  27
  28 /* local copy of shared memory */
  29 shm_t   shm = {{ 0 }};
  30
  31 #if 0
  32 static uint32_t xorshift32(void)
  33 {
  34         static uint32_t x = 314159265;
  35         x ^= x << 17;
  36         x ^= x >> 13;
  37         x ^= x << 5;
  38         return(x);
  39 }
  40 #endif
  41
  42 void shm_init(void) {
  43         /* input data */
  44         shm.buf0.size = 8;
  45         shm.buf0.rp = 0;
  46         shm.buf0.wp = 0;
  47
  48         /* output data */
  49         shm.buf1.size = 32;
  50         shm.buf1.rp   = 0;
  51         shm.buf1.wp   = 0;
  52 }
  53
  54 int main(int argc, char *argv[])
  55 {
  56         char filename[255];     /* filename to load */
  57
  58         /* core states */
  59         int32_t states[NUM_CORES]     = { 0 };
  60         int32_t laststates[NUM_CORES] = { 0 };
  61
  62         e_epiphany_t dev;
  63         e_mem_t      emem;
  64
  65         e_set_host_verbosity(H_D0);
  66         e_set_loader_verbosity(L_D0);
  67
  68         /* init board, reset epiphany, open workgroup */
  69         if(e_init(NULL) != E_OK)
  70                 FAIL("Can't init!\n");
  71         e_reset_system();
  72         if(e_open(&dev, 0, 0, 4, 4) != E_OK)
  73                 FAIL("Can't open!\n");
  74
  75         /* initialize, allocate and update shared memory buffer */
  76         shm_init();
  77         if(e_alloc(&emem, SHM_OFFSET, sizeof(shm_t)) != E_OK)
  78                 FAIL("Can't alloc!\n");
  79         if(e_write(&emem, 0, 0, (off_t)0, &shm, sizeof(shm_t)) == E_ERR)
  80                 FAIL("Can't clear shm!\n");
  81         if(e_write(&emem, 0, 0, (off_t)0, &states, sizeof(states)) == E_ERR)
  82                 FAIL("Can't clear states!\n");
  83
  84         /* load and start all programs */
  85         for(int i = 0; i < NUM_PROGRAMS; i++) {
  86                 snprintf(filename, 255, "%s", programs[i]);
  87                 printf("Kicking core %i = (%i, %i) with '%s'\n",
  88                         i, ROW(i), COL(i), filename);
  89                 if(e_load(filename, &dev, ROW(i), COL(i), E_TRUE) != E_OK)
  90                         FAIL("Can't load %i!\n", i);
  91         }
  92
  93         /* =============================================================== */
  94         printf("Started %i cores.\n", NUM_PROGRAMS);
  95         while(1) {
  96                 int done = 1;
  97
  98                 /* poll shm states for changes */
  99                 printf("Polling shared memory.\n");
 100
 101                 while(1) {
 102                         /* read epiphany core states */
 103                         if(e_read(&emem, 0, 0, (off_t)0, &states,
 104                                 sizeof(states)) == E_ERR)
 105                                         FAIL("Can't poll!\n");
 106
 107                         /* check for state changes */
 108                         if(memcmp(laststates, states, sizeof(states)))
 109                                 break;
 110                 };
 111
 112                 /* save current states */
 113                 memcpy(laststates, states, sizeof(states));
 114
 115                 /* print core states */
 116                 for(int i = 0; i < NUM_PROGRAMS; i++) {
 117                         printf("CORE %i: ", i);
 118                         switch(states[i]) {
 119                         case -1: printf("done "); break;
 120                         default: printf("state %i ", states[i]); done=0; break;
 121                         }
 122                         printf("\n");
 123                 }
 124                 printf("CORE14: 0x%x\n", states[14]);
 125                 printf("CORE15: 0x%x\n", states[15]);
 126
 127                 /* stop polling if all cores finished */
 128                 if(done) break;
 129         }
 130         /* =============================================================== */
 131
 132         printf("All cores finished.\n");
 133
 134         /* read whole shm buffer */
 135         if(e_read(&emem, 0, 0, (off_t)0, &shm, sizeof(shm)) == E_ERR)
 136                 FAIL("Can't read full shm!\n");
 137
 138         /* print buffer 0 and buffer 1 */
 139         for(int i = 0; i < 16; i++) {
 140                 printf("0x%x ", shm.buf0.buf[i]);
 141         } printf("\n");
 142         for(int i = 0; i < 16; i++) {
 143                 printf("0x%x ", shm.buf1.buf[i]);
 144         } printf("\n");
 145
 146
 147         for(int i = 0; i < 4; i++) {
 148                 printf("%.2f\t", ((float*)shm.buf0.buf)[i]);
 149         } printf("\n");
 150
 151         for(int i = 0; i < 8; i++) {
 152                 printf("%.2f\t", ((float*)shm.buf1.buf)[i]);
 153         } printf("\n");
 154
 155         /* free shm buffer, close workgroup and finalize */
 156         if(e_free(&emem) != E_OK)
 157                 FAIL("Can't free!\n");
 158         if(e_close(&dev) != E_OK)
 159                 FAIL("Can't close!\n");
 160         if(e_finalize() != E_OK)
 161                 FAIL("Can't finalize!\n");
 162
 163         return(0);
 164 }
 165