void
hubii_eint_init(cnodeid_t cnode)
{
int bit, rv;
ii_iidsr_u_t hubio_eint;
hubinfo_t hinfo;
cpuid_t intr_cpu;
vertex_hdl_t hub_v;
int bit_pos_to_irq(int bit);
ii_ilcsr_u_t ilcsr;
hub_v = (vertex_hdl_t)cnodeid_to_vertex(cnode);
ASSERT_ALWAYS(hub_v);
hubinfo_get(hub_v, &hinfo);
ASSERT(hinfo);
ASSERT(hinfo->h_cnodeid == cnode);
ilcsr.ii_ilcsr_regval = REMOTE_HUB_L(hinfo->h_nasid, IIO_ILCSR);
if ((ilcsr.ii_ilcsr_fld_s.i_llp_stat & 0x2) == 0) {
/*
* HUB II link is not up. Disable LLP. Clear old errors.
* Enable interrupts to handle BTE errors.
*/
ilcsr.ii_ilcsr_fld_s.i_llp_en = 0;
REMOTE_HUB_S(hinfo->h_nasid, IIO_ILCSR, ilcsr.ii_ilcsr_regval);
}
/* Select a possible interrupt target where there is a free interrupt
* bit and also reserve the interrupt bit for this IO error interrupt
*/
intr_cpu = intr_heuristic(hub_v, SGI_II_ERROR, &bit);
if (intr_cpu == CPU_NONE) {
printk("hubii_eint_init: intr_heuristic failed, cnode %d", cnode);
return;
}
rv = intr_connect_level(intr_cpu, SGI_II_ERROR);
request_irq(SGI_II_ERROR, hubii_eint_handler, SA_SHIRQ, "SN_hub_error", (void *)hub_v);
irq_descp(bit)->status |= SN2_IRQ_PER_HUB;
ASSERT_ALWAYS(rv >= 0);
hubio_eint.ii_iidsr_regval = 0;
hubio_eint.ii_iidsr_fld_s.i_enable = 1;
hubio_eint.ii_iidsr_fld_s.i_level = bit;/* Take the least significant bits*/
hubio_eint.ii_iidsr_fld_s.i_node = COMPACT_TO_NASID_NODEID(cnode);
hubio_eint.ii_iidsr_fld_s.i_pi_id = cpuid_to_subnode(intr_cpu);
REMOTE_HUB_S(hinfo->h_nasid, IIO_IIDSR, hubio_eint.ii_iidsr_regval);
}
int show_interrupts(struct seq_file *p, void *v)
{
int j, i = *(loff_t *) v;
struct irqaction * action;
irq_desc_t *idesc;
unsigned long flags;
if (i == 0) {
seq_puts(p, " ");
for (j=0; j<NR_CPUS; j++)
if (cpu_online(j))
seq_printf(p, "CPU%d ",j);
seq_putc(p, '\n');
}
if (i < NR_IRQS) {
idesc = irq_descp(i);
spin_lock_irqsave(&idesc->lock, flags);
action = idesc->action;
if (!action)
goto skip;
seq_printf(p, "%3d: ",i);
#ifndef CONFIG_SMP
seq_printf(p, "%10u ", kstat_irqs(i));
#else
for (j = 0; j < NR_CPUS; j++)
if (cpu_online(j))
seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
#endif
seq_printf(p, " %14s", idesc->handler->typename);
seq_printf(p, " %s", action->name);
for (action=action->next; action; action = action->next)
seq_printf(p, ", %s", action->name);
seq_putc(p, '\n');
skip:
spin_unlock_irqrestore(&idesc->lock, flags);
} else if (i == NR_IRQS) {
}
/*
* IRQ autodetection code..
*
* This depends on the fact that any interrupt that
* comes in on to an unassigned handler will get stuck
* with "IRQ_WAITING" cleared and the interrupt
* disabled.
*/
int setup_vector(unsigned int vector, struct irqaction * new)
{
unsigned long flags;
struct irqaction *old, **p;
irq_desc_t *desc = irq_descp(vector);
struct irq_cfg *cfg = irq_cfg(vector);
/*
* The following block of code has to be executed atomically
*/
spin_lock_irqsave(&desc->lock,flags);
p = &desc->action;
if ((old = *p) != NULL) {
spin_unlock_irqrestore(&desc->lock,flags);
return -EBUSY;
}
*p = new;
desc->depth = 0;
