X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Fsrc%2Fgeekos%2Fvmm_stubs.c;h=15ae58902d425a2ce0f45b641be20eebab661f28;hp=c83e6d5e87664fef3760133130127e6ddf996d4e;hb=90b8236597004a37a9d5acb33a1b1f987fe9070c;hpb=d8fc6aa4bc2a5d9cec50923e9d2bd30f867dd50a diff --git a/palacios/src/geekos/vmm_stubs.c b/palacios/src/geekos/vmm_stubs.c index c83e6d5..15ae589 100644 --- a/palacios/src/geekos/vmm_stubs.c +++ b/palacios/src/geekos/vmm_stubs.c @@ -133,70 +133,3 @@ unsigned int get_cpu_khz() { return cpu_khz_freq; } - - - -#if 0 - - -/* ------ Calibrate the TSC ------- - * Return processor ticks per second / CALIBRATE_FRAC. - * - * Ported From Xen - */ -#define PIT_MODE 0x43 -#define PIT_CH2 0x42 -#define CLOCK_TICK_RATE 1193180 /* system crystal frequency (Hz) */ -#define CALIBRATE_FRAC 20 /* calibrate over 50ms */ -#define CALIBRATE_LATCH ((CLOCK_TICK_RATE+(CALIBRATE_FRAC/2))/CALIBRATE_FRAC) - - -unsigned long long get_cpu_khz() { - ullong_t start, end; - unsigned long count; - unsigned long long tmp; - unsigned long print_tmp; - - /* Set the Gate high, disable speaker */ - VM_Out_Byte((VM_In_Byte(0x61) & ~0x02) | 0x01, 0x61); - - /* - * Now let's take care of CTC channel 2 - * - * Set the Gate high, program CTC channel 2 for mode 0, (interrupt on - * terminal count mode), binary count, load 5 * LATCH count, (LSB and MSB) - * to begin countdown. - */ - VM_Out_Byte(0xb0, PIT_MODE); /* binary, mode 0, LSB/MSB, Ch 2 */ - VM_Out_Byte(CALIBRATE_LATCH & 0xff, PIT_CH2); /* LSB of count */ - VM_Out_Byte(CALIBRATE_LATCH >> 8, PIT_CH2); /* MSB of count */ - - rdtscll(start); - for ( count = 0; (VM_In_Byte(0x61) & 0x20) == 0; count++ ) - continue; - rdtscll(end); - - /* Error if the CTC doesn't behave itself. */ - if ( count == 0 ) { - PrintBoth("CPU Frequency Calibration Error\n"); - return 0; - } - - tmp = ((end - start) * (ullong_t)CALIBRATE_FRAC); - - do_div(tmp, 1000); - - tmp &= 0xffffffff; - print_tmp = (unsigned long)tmp; - - PrintBoth("Detected %lu.%lu MHz CPU\n", print_tmp / 1000, print_tmp % 1000); - return tmp; -} - -#undef PIT_CH2 -#undef PIT_MODE -#undef CLOCK_TICK_RATE -#undef CALIBRATE_FRAC -#undef CALIBRATE_LATCH - -#endif