int request_bridge_irq(struct bridge_controller *bc)
{
int irq = allocate_irqno();
int swlevel, cpu;
nasid_t nasid;
if (irq < 0)
return irq;
/*
* "map" irq to a swlevel greater than 6 since the first 6 bits
* of INT_PEND0 are taken
*/
cpu = bc->irq_cpu;
swlevel = alloc_level(cpu, irq);
if (unlikely(swlevel < 0)) {
free_irqno(irq);
return -EAGAIN;
}
/* Make sure it's not already pending when we connect it. */
nasid = COMPACT_TO_NASID_NODEID(cpu_to_node(cpu));
REMOTE_HUB_CLR_INTR(nasid, swlevel);
intr_connect_level(cpu, swlevel);
register_bridge_irq(irq);
return irq;
}
static __init void intr_clear_all(nasid_t nasid)
{
int i;
REMOTE_HUB_S(nasid, PI_INT_MASK0_A, 0);
REMOTE_HUB_S(nasid, PI_INT_MASK0_B, 0);
REMOTE_HUB_S(nasid, PI_INT_MASK1_A, 0);
REMOTE_HUB_S(nasid, PI_INT_MASK1_B, 0);
for (i = 0; i < 128; i++)
REMOTE_HUB_CLR_INTR(nasid, i);
}
static void setup_hub_mask(struct hub_irq_data *hd, const struct cpumask *mask)
{
nasid_t nasid;
int cpu;
cpu = cpumask_first_and(mask, cpu_online_mask);
nasid = COMPACT_TO_NASID_NODEID(cpu_to_node(cpu));
hd->cpu = cpu;
if (!cputoslice(cpu)) {
hd->irq_mask[0] = REMOTE_HUB_PTR(nasid, PI_INT_MASK0_A);
hd->irq_mask[1] = REMOTE_HUB_PTR(nasid, PI_INT_MASK1_A);
} else {
hd->irq_mask[0] = REMOTE_HUB_PTR(nasid, PI_INT_MASK0_B);
hd->irq_mask[1] = REMOTE_HUB_PTR(nasid, PI_INT_MASK1_B);
}
/* Make sure it's not already pending when we connect it. */
REMOTE_HUB_CLR_INTR(nasid, hd->bit);
}
