C6X: remove megamod-pic requirement on direct-mapped core pic
The megamodule PIC cascades a number of interrupt sources into the core
priority PIC. The megamodule code depends on the core hardware interrupt
numbers being mapped one-to-one with regard to linux interrupt numbers.
This patch removes that dependence in order to pave the way for removing
the direct mapping in the core PIC code.
Signed-off-by: Mark Salter <msalter@redhat.com>
diff --git a/arch/c6x/platforms/megamod-pic.c b/arch/c6x/platforms/megamod-pic.c
index c1c4e2a..74e3371 100644
--- a/arch/c6x/platforms/megamod-pic.c
+++ b/arch/c6x/platforms/megamod-pic.c
@@ -243,27 +243,37 @@
* as their interrupt parent.
*/
for (i = 0; i < NR_COMBINERS; i++) {
+ struct irq_data *irq_data;
+ irq_hw_number_t hwirq;
irq = irq_of_parse_and_map(np, i);
if (irq == NO_IRQ)
continue;
+ irq_data = irq_get_irq_data(irq);
+ if (!irq_data) {
+ pr_err("%s: combiner-%d no irq_data for virq %d!\n",
+ np->full_name, i, irq);
+ continue;
+ }
+
+ hwirq = irq_data->hwirq;
+
/*
- * We count on the core priority interrupts (4 - 15) being
- * direct mapped. Check that device tree provided something
- * in that range.
+ * Check that device tree provided something in the range
+ * of the core priority interrupts (4 - 15).
*/
- if (irq < 4 || irq >= NR_PRIORITY_IRQS) {
- pr_err("%s: combiner-%d virq %d out of range!\n",
- np->full_name, i, irq);
+ if (hwirq < 4 || hwirq >= NR_PRIORITY_IRQS) {
+ pr_err("%s: combiner-%d core irq %ld out of range!\n",
+ np->full_name, i, hwirq);
continue;
}
/* record the mapping */
- mapping[irq - 4] = i;
+ mapping[hwirq - 4] = i;
- pr_debug("%s: combiner-%d cascading to virq %d\n",
- np->full_name, i, irq);
+ pr_debug("%s: combiner-%d cascading to hwirq %ld\n",
+ np->full_name, i, hwirq);
cascade_data[i].pic = pic;
cascade_data[i].index = i;