x86, irq, devicetree: Use common irqdomain map interface to program I…

…OAPIC pins

Refine devicetree to use common irqdomain map interface to program
IOAPIC pins, so we can unify the callsite to progam IOAPIC pins.

Signed-off-by: Jiang Liu <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Paul Gortmaker <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: Randy Dunlap <[email protected]>
Cc: Yinghai Lu <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Tony Lindgren <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>

arch/x86/kernel/devicetree.c

@@ -201,10 +201,8 @@ static int ioapic_xlate(struct irq_domain *domain,
 			const u32 *intspec, u32 intsize,
 			irq_hw_number_t *out_hwirq, u32 *out_type)
 {
-	struct io_apic_irq_attr attr;
 	struct of_ioapic_type *it;
-	u32 line, idx;
-	int rc;
+	u32 line, idx, gsi;
 
 	if (WARN_ON(intsize < 2))
 		return -EINVAL;
@@ -217,19 +215,17 @@ static int ioapic_xlate(struct irq_domain *domain,
 	it = &of_ioapic_type[intspec[1]];
 
 	idx = (u32)(long)domain->host_data;
-	set_io_apic_irq_attr(&attr, idx, line, it->trigger, it->polarity);
-
-	rc = io_apic_setup_irq_pin_once(irq_find_mapping(domain, line),
-					cpu_to_node(0), &attr);
-	if (rc)
-		return rc;
+	gsi = mp_pin_to_gsi(idx, line);
+	if (mp_set_gsi_attr(gsi, it->trigger, it->polarity, cpu_to_node(0)))
+		return -EBUSY;
 
 	*out_hwirq = line;
 	*out_type = it->out_type;
 	return 0;
 }
 
 const struct irq_domain_ops ioapic_irq_domain_ops = {
+	.map = mp_irqdomain_map,
 	.xlate = ioapic_xlate,
 };