static int
s3c2410_bus_attach(struct uart_softc *sc)
{
uintptr_t irq;
sc->sc_hwiflow = 0;
sc->sc_hwoflow = 0;
irq = rman_get_start(sc->sc_ires);
arm_unmask_irq(irq);
arm_unmask_irq(get_sub_irq(irq, RX_OFF));
arm_unmask_irq(get_sub_irq(irq, TX_OFF));
arm_unmask_irq(get_sub_irq(irq, ERR_OFF));
return (0);
}
static void
s3c2410_bus_ungrab(struct uart_softc *sc)
{
uintptr_t irq;
irq = rman_get_start(sc->sc_ires);
arm_unmask_irq(get_sub_irq(irq, RX_OFF));
}
int
arm_remove_irqhandler(int irq, void *cookie)
{
struct intr_event *event;
int error;
event = intr_events[irq];
arm_mask_irq(irq);
error = intr_event_remove_handler(cookie);
if (!CK_SLIST_EMPTY(&event->ie_handlers))
arm_unmask_irq(irq);
return (error);
}
static int
nexus_setup_intr(device_t dev, device_t child, struct resource *res, int flags,
driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep)
{
int irq;
if ((rman_get_flags(res) & RF_SHAREABLE) == 0)
flags |= INTR_EXCL;
for (irq = rman_get_start(res); irq <= rman_get_end(res); irq++) {
arm_setup_irqhandler(device_get_nameunit(child),
filt, intr, arg, irq, flags, cookiep);
arm_unmask_irq(irq);
}
return (0);
}
static int
pxa_setup_intr(device_t dev, device_t child, struct resource *irq, int flags,
driver_filter_t *filter, driver_intr_t *ithread, void *arg, void **cookiep)
{
struct obio_softc *sc;
int error;
sc = (struct obio_softc *)device_get_softc(dev);
error = BUS_SETUP_INTR(device_get_parent(dev), child, irq, flags,
filter, ithread, arg, cookiep);
if (error)
return (error);
arm_unmask_irq(rman_get_start(irq));
return (0);
}
/**
* omap_setup_intr - initialises and unmasks the IRQ.
*
* RETURNS:
* 0 on success
*/
int
omap_setup_intr(device_t dev, device_t child,
struct resource *res, int flags, driver_filter_t *filt,
driver_intr_t *intr, void *arg, void **cookiep)
{
unsigned int i;
BUS_SETUP_INTR(device_get_parent(dev), child, res, flags, filt, intr,
arg, cookiep);
/* Enable all the interrupts in the range ... will probably be only one */
for (i = rman_get_start(res); (i < NIRQ) && (i <= rman_get_end(res)); i++) {
arm_unmask_irq(i);
}
return (0);
}
static int
s3c2410_bus_transmit(struct uart_softc *sc)
{
uintptr_t irq;
uart_lock(sc->sc_hwmtx);
for (int i = 0; i < sc->sc_txdatasz; i++) {
s3c2410_putc(&sc->sc_bas, sc->sc_txbuf[i]);
uart_barrier(&sc->sc_bas);
}
sc->sc_txbusy = 1;
uart_unlock(sc->sc_hwmtx);
irq = rman_get_start(sc->sc_ires);
arm_unmask_irq(get_sub_irq(irq, TX_OFF));
return (0);
}
void
init_secondary(int cpu)
{
struct pcpu *pc;
uint32_t loop_counter;
#ifndef INTRNG
int start = 0, end = 0;
#endif
uint32_t actlr_mask, actlr_set;
pmap_set_tex();
cpuinfo_get_actlr_modifier(&actlr_mask, &actlr_set);
reinit_mmu(pmap_kern_ttb, actlr_mask, actlr_set);
cpu_setup();
/* Provide stack pointers for other processor modes. */
set_stackptrs(cpu);
enable_interrupts(PSR_A);
pc = &__pcpu[cpu];
/*
* pcpu_init() updates queue, so it should not be executed in parallel
* on several cores
*/
while(mp_naps < (cpu - 1))
;
pcpu_init(pc, cpu, sizeof(struct pcpu));
dpcpu_init(dpcpu[cpu - 1], cpu);
#if __ARM_ARCH >= 6 && defined(DDB)
dbg_monitor_init_secondary();
#endif
/* Signal our startup to BSP */
atomic_add_rel_32(&mp_naps, 1);
/* Spin until the BSP releases the APs */
while (!atomic_load_acq_int(&aps_ready)) {
#if __ARM_ARCH >= 7
__asm __volatile("wfe");
#endif
}
/* Initialize curthread */
KASSERT(PCPU_GET(idlethread) != NULL, ("no idle thread"));
pc->pc_curthread = pc->pc_idlethread;
pc->pc_curpcb = pc->pc_idlethread->td_pcb;
set_curthread(pc->pc_idlethread);
#ifdef VFP
vfp_init();
#endif
/* Configure the interrupt controller */
intr_pic_init_secondary();
mtx_lock_spin(&ap_boot_mtx);
atomic_add_rel_32(&smp_cpus, 1);
if (smp_cpus == mp_ncpus) {
/* enable IPI's, tlb shootdown, freezes etc */
atomic_store_rel_int(&smp_started, 1);
}
mtx_unlock_spin(&ap_boot_mtx);
#ifndef INTRNG
/* Enable ipi */
#ifdef IPI_IRQ_START
start = IPI_IRQ_START;
#ifdef IPI_IRQ_END
end = IPI_IRQ_END;
#else
end = IPI_IRQ_START;
#endif
#endif
for (int i = start; i <= end; i++)
arm_unmask_irq(i);
#endif /* INTRNG */
enable_interrupts(PSR_I);
loop_counter = 0;
while (smp_started == 0) {
DELAY(100);
loop_counter++;
if (loop_counter == 1000)
CTR0(KTR_SMP, "AP still wait for smp_started");
}
/* Start per-CPU event timers. */
cpu_initclocks_ap();
CTR0(KTR_SMP, "go into scheduler");
/* Enter the scheduler */
sched_throw(NULL);
panic("scheduler returned us to %s", __func__);
/* NOTREACHED */
}
void
init_secondary(int cpu)
{
struct pcpu *pc;
uint32_t loop_counter;
int start = 0, end = 0;
cpu_setup(NULL);
setttb(pmap_pa);
cpu_tlb_flushID();
pc = &__pcpu[cpu];
/*
* pcpu_init() updates queue, so it should not be executed in parallel
* on several cores
*/
while(mp_naps < (cpu - 1))
;
pcpu_init(pc, cpu, sizeof(struct pcpu));
dpcpu_init(dpcpu[cpu - 1], cpu);
/* Provide stack pointers for other processor modes. */
set_stackptrs(cpu);
/* Signal our startup to BSP */
atomic_add_rel_32(&mp_naps, 1);
/* Spin until the BSP releases the APs */
while (!aps_ready)
;
/* Initialize curthread */
KASSERT(PCPU_GET(idlethread) != NULL, ("no idle thread"));
pc->pc_curthread = pc->pc_idlethread;
pc->pc_curpcb = pc->pc_idlethread->td_pcb;
set_curthread(pc->pc_idlethread);
#ifdef VFP
pc->pc_cpu = cpu;
vfp_init();
#endif
mtx_lock_spin(&ap_boot_mtx);
atomic_add_rel_32(&smp_cpus, 1);
if (smp_cpus == mp_ncpus) {
/* enable IPI's, tlb shootdown, freezes etc */
atomic_store_rel_int(&smp_started, 1);
}
mtx_unlock_spin(&ap_boot_mtx);
/* Enable ipi */
#ifdef IPI_IRQ_START
start = IPI_IRQ_START;
#ifdef IPI_IRQ_END
end = IPI_IRQ_END;
#else
end = IPI_IRQ_START;
#endif
#endif
for (int i = start; i <= end; i++)
arm_unmask_irq(i);
enable_interrupts(PSR_I);
loop_counter = 0;
while (smp_started == 0) {
DELAY(100);
loop_counter++;
if (loop_counter == 1000)
CTR0(KTR_SMP, "AP still wait for smp_started");
}
/* Start per-CPU event timers. */
cpu_initclocks_ap();
CTR0(KTR_SMP, "go into scheduler");
platform_mp_init_secondary();
/* Enter the scheduler */
sched_throw(NULL);
panic("scheduler returned us to %s", __func__);
/* NOTREACHED */
}
static void
arm_unmask_msi(void)
{
arm_unmask_irq(MPIC_INT_MSI);
}