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From: sr@denx.de (Stefan Roese)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] irqchip/armada-370-xp: Enable MSI-X support
Date: Tue,  2 May 2017 09:26:00 +0200	[thread overview]
Message-ID: <20170502072600.13380-1-sr@denx.de> (raw)

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>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
---
 drivers/irqchip/irq-armada-370-xp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 33982cbd8a57..b17039ed8735 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -124,7 +124,7 @@ 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,
 };
 
-- 
2.12.2

             reply	other threads:[~2017-05-02  7:26 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-02  7:26 Stefan Roese [this message]
2017-08-15 13:31 ` [PATCH] irqchip/armada-370-xp: Enable MSI-X support Stefan Roese
2017-08-15 13:42   ` Jason Cooper
2017-08-15 13:55     ` Marc Zyngier
2017-08-15 14:01   ` Thomas Petazzoni
2017-08-15 14:06     ` Stefan Roese
2017-08-18 10:18       ` Stefan Roese
2017-08-18 12:12         ` Thomas Petazzoni
2017-08-18 12:46           ` Marc Zyngier

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