irqchip/armada-370-xp: Enable MSI-X support

Armada XP does not only support MSI, but also MSI-X. This patch sets
the MSI_FLAG_PCI_MSIX flag in the interrupt controller driver which
is the only change necessary to enable MSI-X support on this SoC. As
the Linux PCI MSI-X infrastructure takes care of writing the data and
address structures into the BAR specified by the MSI-X controller.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index b207b2c..9d42a8f 100644 (file)
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -203,7 +203,7 @@ static struct irq_chip armada_370_xp_msi_irq_chip = {
 
 static struct msi_domain_info armada_370_xp_msi_domain_info = {
        .flags  = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
-                  MSI_FLAG_MULTI_PCI_MSI),
+                  MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX),
        .chip   = &armada_370_xp_msi_irq_chip,
 };