/* -----------------------------------------------------------------------------
vmx_turn_on()
Turn on VT operation on all CPUs.
-------------------------------------------------------------------------- */
int
host_vmxon(boolean_t exclusive)
{
int error;
boolean_t do_it = FALSE; /* do the cpu sync outside of the area holding the lock */
if (!vmx_globally_available())
return VMX_UNSUPPORTED;
simple_lock(&vmx_use_count_lock);
if (vmx_exclusive) {
error = VMX_INUSE;
} else {
vmx_use_count++;
if (vmx_use_count == 1) /* was turned off before */
do_it = TRUE;
vmx_exclusive = exclusive;
VMX_KPRINTF("VMX use count: %d\n", vmx_use_count);
error = VMX_OK;
}
simple_unlock(&vmx_use_count_lock);
if (do_it) {
vmx_allocate_vmxon_regions();
mp_rendezvous(NULL, (void (*)(void *))vmx_on, NULL, NULL);
}
return error;
}
/*
* Update EIST settings on all processors.
*/
void driver::eist_update_all_cpus(uint16_t vid) {
void *p;
IOSimpleLockLock(eist_lock);
p=&vid;
mp_rendezvous(eist_update_setup, eist_update_action, eist_update_teardown, p);
IOSimpleLockUnlock(eist_lock);
}
void throttleAllCPUs(PState* p) {
dbg("Starting throttle with CTL 0x%x\n", CTL(p->Frequency, p->Voltage));
IOSimpleLockLock(Lock);
mp_rendezvous(disableInterrupts, throttleCPU, enableInterrupts, p);
IODelay(p->Latency); // maybe wait longer?
totalThrottles++;
IOSimpleLockUnlock(Lock);
dbg("Throttle done.\n");
}
static void get_cpu_info_data()
{
cpu_info_t values[NCPUS];
mp_rendezvous(NULL, (void (*)(void *))cpu_info_callback,
NULL, (void *) values);
printf("---- get_cpu_info_data ----\n");
for (int i = 0; i < NCPUS; i++)
{
printf("-- cpu_info_t: os_id %d socket %d, core %d, apic %d\n",
values[i].os_id, values[i].socket, values[i].core, values[i].apic);
}
}
static void get_cpu_tick_diff()
{
// to get nanos:
// static mach_timebase_info_data_t timebase_info;
// mach_timebase_info(&timebase_info);
tsc_t values[NCPUS];
mp_rendezvous(NULL, get_cpu_tick_diff_callback, NULL, (void *) values);
printf("---- get_cpu_tick_diff ----\n");
for (int i = 0; i < NCPUS; i++)
{
printf("-- cpu: %d raw: %llu corrected: %llu --\n", i, values[i].raw, values[i].corrected);
}
}
/* -----------------------------------------------------------------------------
vmx_turn_off()
Turn off VT operation on all CPUs.
-------------------------------------------------------------------------- */
void
host_vmxoff()
{
boolean_t do_it = FALSE; /* do the cpu sync outside of the area holding the lock */
simple_lock(&vmx_use_count_lock);
if (vmx_use_count) {
vmx_use_count--;
vmx_exclusive = FALSE;
if (!vmx_use_count)
do_it = TRUE;
}
simple_unlock(&vmx_use_count_lock);
if (do_it) {
mp_rendezvous(NULL, (void (*)(void *))vmx_off, NULL, NULL);
vmx_free_vmxon_regions();
}
VMX_KPRINTF("VMX use count: %d\n", vmx_use_count);
}