static int __init nmi_debug_setup(char *str)
{
char *p, *sep;
register_die_notifier(&nmi_debug_nb);
if (nmi_enable()) {
printk(KERN_WARNING "Unable to enable NMI.\n");
return 0;
}
if (*str != '=')
return 0;
for (p = str + 1; *p; p = sep + 1) {
sep = strchr(p, ',');
if (sep)
*sep = 0;
if (strcmp(p, "state") == 0)
nmi_actions |= NMI_SHOW_STATE;
else if (strcmp(p, "regs") == 0)
nmi_actions |= NMI_SHOW_REGS;
else if (strcmp(p, "debounce") == 0)
nmi_actions |= NMI_DEBOUNCE;
else if (strcmp(p, "die") == 0)
nmi_actions |= NMI_DIE;
else
printk(KERN_WARNING "NMI: Unrecognized action `%s'\n",
p);
if (!sep)
break;
}
return 0;
}
static int __init eic_probe(struct platform_device *pdev)
{
struct eic *eic;
struct resource *regs;
unsigned int i;
unsigned int nr_of_irqs;
unsigned int int_irq;
int ret;
u32 pattern;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
int_irq = platform_get_irq(pdev, 0);
if (!regs || (int)int_irq <= 0) {
dev_dbg(&pdev->dev, "missing regs and/or irq resource\n");
return -ENXIO;
}
ret = -ENOMEM;
eic = kzalloc(sizeof(struct eic), GFP_KERNEL);
if (!eic) {
dev_dbg(&pdev->dev, "no memory for eic structure\n");
goto err_kzalloc;
}
eic->first_irq = EIM_IRQ_BASE + 32 * pdev->id;
eic->regs = ioremap(regs->start, resource_size(regs));
if (!eic->regs) {
dev_dbg(&pdev->dev, "failed to map regs\n");
goto err_ioremap;
}
/*
*/
eic_writel(eic, IDR, ~0UL);
eic_writel(eic, MODE, ~0UL);
pattern = eic_readl(eic, MODE);
nr_of_irqs = fls(pattern);
/* */
eic_writel(eic, EDGE, 0UL);
eic_writel(eic, LEVEL, 0UL);
eic->chip = &eic_chip;
for (i = 0; i < nr_of_irqs; i++) {
irq_set_chip_and_handler(eic->first_irq + i, &eic_chip,
handle_level_irq);
irq_set_chip_data(eic->first_irq + i, eic);
}
irq_set_chained_handler(int_irq, demux_eic_irq);
irq_set_handler_data(int_irq, eic);
if (pdev->id == 0) {
nmi_eic = eic;
if (nmi_enabled)
/*
*/
nmi_enable();
}
dev_info(&pdev->dev,
"External Interrupt Controller at 0x%p, IRQ %u\n",
eic->regs, int_irq);
dev_info(&pdev->dev,
"Handling %u external IRQs, starting with IRQ %u\n",
nr_of_irqs, eic->first_irq);
return 0;
err_ioremap:
kfree(eic);
err_kzalloc:
return ret;
}