void
cpu_vmspace_exec(lwp_t *l, vaddr_t start, vaddr_t end)
{
/*
* We need to turn on/off UX so that copyout/copyin will work
* well before setreg gets called.
*/
uint32_t sr = mips_cp0_status_read();
if (end != (uint32_t) end) {
mips_cp0_status_write(sr | MIPS3_SR_UX);
} else {
mips_cp0_status_write(sr & ~MIPS3_SR_UX);
}
}
void
interrupt_init(void)
{
static const char *softintr_names[] = IPL_SOFTNAMES;
struct playstation2_soft_intr *asi;
int i;
evcnt_attach_static(&_playstation2_evcnt.clock);
evcnt_attach_static(&_playstation2_evcnt.sbus);
evcnt_attach_static(&_playstation2_evcnt.dmac);
for (i = 0; i < _IPL_NSOFT; i++) {
asi = &playstation2_soft_intrs[i];
TAILQ_INIT(&asi->softintr_q);
asi->softintr_ipl = IPL_SOFT + i;
simple_lock_init(&asi->softintr_slock);
evcnt_attach_dynamic(&asi->softintr_evcnt, EVCNT_TYPE_INTR,
NULL, "soft", softintr_names[i]);
}
/* XXX Establish legacy soft interrupt handlers. */
softnet_intrhand = softintr_establish(IPL_SOFTNET,
(void (*)(void *))netintr, NULL);
KDASSERT(softnet_intrhand != NULL);
/* install software interrupt handler */
intc_intr_establish(I_CH10_TIMER1, IPL_SOFT, timer1_intr, 0);
intc_intr_establish(I_CH11_TIMER2, IPL_SOFTCLOCK, timer2_intr, 0);
/* IPL_SOFTNET and IPL_SOFTSERIAL are shared interrupt. */
intc_intr_establish(I_CH12_TIMER3, IPL_SOFTNET, timer3_intr, 0);
/* enable SIF BIOS access */
md_imask = ~D_STAT_CIM_BIT(D_CH5_SIF0);
mips_cp0_status_write(0x00010801);
}
void
smp_init_secondary(u_int32_t cpuid)
{
if (cpuid >= MAXCPU)
panic ("cpu id exceeds MAXCPU\n");
/* tlb init */
R4K_SetWIRED(0);
R4K_TLBFlush(num_tlbentries);
R4K_SetWIRED(VMWIRED_ENTRIES);
MachSetPID(0);
Mips_SyncCache();
mips_cp0_status_write(0);
while (!aps_ready)
;
mips_sync(); mips_sync();
/* Initialize curthread. */
KASSERT(PCPU_GET(idlethread) != NULL, ("no idle thread"));
PCPU_SET(curthread, PCPU_GET(idlethread));
mtx_lock_spin(&ap_boot_mtx);
smp_cpus++;
CTR1(KTR_SMP, "SMP: AP CPU #%d Launched", PCPU_GET(cpuid));
/* Build our map of 'other' CPUs. */
PCPU_SET(other_cpus, all_cpus & ~PCPU_GET(cpumask));
printf("SMP: AP CPU #%d Launched!\n", PCPU_GET(cpuid));
if (smp_cpus == mp_ncpus) {
smp_started = 1;
smp_active = 1;
}
mtx_unlock_spin(&ap_boot_mtx);
while (smp_started == 0)
; /* nothing */
/* Enable Interrupt */
mips_cp0_status_write(SR_INT_ENAB);
/* ok, now grab sched_lock and enter the scheduler */
mtx_lock_spin(&sched_lock);
/*
* Correct spinlock nesting. The idle thread context that we are
* borrowing was created so that it would start out with a single
* spin lock (sched_lock) held in fork_trampoline(). Since we've
* explicitly acquired locks in this function, the nesting count
* is now 2 rather than 1. Since we are nested, calling
* spinlock_exit() will simply adjust the counts without allowing
* spin lock using code to interrupt us.
*/
spinlock_exit();
KASSERT(curthread->td_md.md_spinlock_count == 1, ("invalid count"));
binuptime(PCPU_PTR(switchtime));
PCPU_SET(switchticks, ticks);
/* kick off the clock on this cpu */
mips_start_timer();
cpu_throw(NULL, choosethread()); /* doesn't return */
panic("scheduler returned us to %s", __func__);
}