util/romcc/tests/simple_test47.c

   1 static void spd_set_memclk(void)
   2 {
   3         unsigned min_cycle_time, min_latency;
   4         unsigned device;
   5         int new_cycle_time, new_latency;
   6         int index;
   7         int latency;
   8
   9         min_cycle_time = 0x50;
  10         min_latency = 2;
  11         device = 0x50;
  12         new_latency = 5;
  13         new_cycle_time = 0xa0;
  14         latency = 23;
  15
  16         for(index = 0; index < 3; index++, latency++) {
  17                 unsigned long loops;
  18                 unsigned address = index;
  19
  20                 loops = 1000000;
  21                 do {
  22                 } while(--loops);
  23                 if (loops) {
  24                         continue;
  25                 }
  26
  27                 __builtin_outb(device, 0x10e4);
  28
  29                 __builtin_outb(address & 0xFF, 0x10e8);
  30
  31                 loops = 1000000;
  32                 while(--loops)
  33                         ;
  34         }
  35
  36         if (new_cycle_time > min_cycle_time) {
  37                 min_cycle_time = new_cycle_time;
  38         }
  39         if (new_latency > min_latency) {
  40                 min_latency = new_latency;
  41         }
  42 }
  43