[Patch V4 26/42] x86, mpparse, irq: provide basic irqdomain support

Jiang Liu
2014-06-09T08:19:55Z

Enhance mpparse to provide basic support of irqdomain.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
---
arch/x86/kernel/mpparse.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/mpparse.c b/arch/x86/kernel/mpparse.c
index ea8595e4cbd5..13c8e1f864fc 100644
--- a/arch/x86/kernel/mpparse.c
+++ b/arch/x86/kernel/mpparse.c
@@ -19,6 +19,7 @@
#include <linux/module.h>
#include <linux/smp.h>
#include <linux/pci.h>
+#include <linux/irqdomain.h>

#include <asm/mtrr.h>
#include <asm/mpspec.h>
@@ -112,10 +113,17 @@ static void __init MP_bus_info(struct mpc_bus *m)
pr_warn("Unknown bustype %s - ignoring\n", str);
}

+static struct irq_domain_ops mp_ioapic_irqdomain_ops;
+
static void __init MP_ioapic_info(struct mpc_ioapic *m)
{
+ struct ioapic_domain_cfg cfg = {
+ .type = IOAPIC_DOMAIN_LEGACY,
+ .ops = &mp_ioapic_irqdomain_ops,
+ };
+
if (m->flags & MPC_APIC_USABLE)
- mp_register_ioapic(m->apicid, m->apicaddr, gsi_top, NULL);
+ mp_register_ioapic(m->apicid, m->apicaddr, gsi_top, &cfg);
}

static void __init print_mp_irq_info(struct mpc_intsrc *mp_irq)
--
1.7.10.4