linux-kernel - [Patch Part1 v8 26/37] x86/irq: Implement irq_chip.irq_write_msi_msg for MSI/DMAR/HPET irq

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Message-Id: <1428905519-23704-27-git-send-email-jiang.liu@linux.intel.com>
Date:	Mon, 13 Apr 2015 14:11:48 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Dimitri Sivanich <sivanich@....com>, x86@...nel.org,
	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	David Cohen <david.a.cohen@...ux.intel.com>,
	Sander Eikelenboom <linux@...elenboom.it>,
	David Vrabel <david.vrabel@...rix.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tony Luck <tony.luck@...el.com>,
	Joerg Roedel <joro@...tes.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: [Patch Part1 v8 26/37] x86/irq: Implement irq_chip.irq_write_msi_msg for MSI/DMAR/HPET irq_chips

Implement irq_chip.irq_write_msi_msg for MSI/DMAR/HPET irq_chips, they
will be used to share common code later.

Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc: Tony Luck <tony.luck@...el.com>
Cc: Joerg Roedel <joro@...tes.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Rafael J. Wysocki <rjw@...ysocki.net>
Cc: Randy Dunlap <rdunlap@...radead.org>
Cc: Yinghai Lu <yinghai@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Link: http://lkml.kernel.org/r/1416894816-23245-27-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/kernel/apic/msi.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c
index 15429aa112fe..f5b899514634 100644
--- a/arch/x86/kernel/apic/msi.c
+++ b/arch/x86/kernel/apic/msi.c
@@ -192,6 +192,11 @@ dmar_msi_set_affinity(struct irq_data *data, const struct cpumask *mask,
 	return ret;
 }
 
+static void dmar_msi_write_msg(struct irq_data *data, struct msi_msg *msg)
+{
+	dmar_msi_write(data->irq, msg);
+}
+
 static struct irq_chip dmar_msi_controller = {
 	.name			= "DMAR-MSI",
 	.irq_unmask		= dmar_msi_unmask,
@@ -200,6 +205,7 @@ static struct irq_chip dmar_msi_controller = {
 	.irq_set_affinity	= dmar_msi_set_affinity,
 	.irq_retrigger		= irq_chip_retrigger_hierarchy,
 	.irq_compose_msi_msg	= irq_msi_compose_msg,
+	.irq_write_msi_msg	= dmar_msi_write_msg,
 	.flags			= IRQCHIP_SKIP_SET_WAKE,
 };
 
@@ -322,6 +328,11 @@ static int hpet_msi_set_affinity(struct irq_data *data,
 	return ret;
 }
 
+static void hpet_msi_write_msg(struct irq_data *data, struct msi_msg *msg)
+{
+	hpet_msi_write(data->handler_data, msg);
+}
+
 static struct irq_chip hpet_msi_controller = {
 	.name = "HPET-MSI",
 	.irq_unmask = hpet_msi_unmask,
@@ -330,6 +341,7 @@ static struct irq_chip hpet_msi_controller = {
 	.irq_set_affinity = hpet_msi_set_affinity,
 	.irq_retrigger = irq_chip_retrigger_hierarchy,
 	.irq_compose_msi_msg = irq_msi_compose_msg,
+	.irq_write_msi_msg = hpet_msi_write_msg,
 	.flags = IRQCHIP_SKIP_SET_WAKE,
 };
 
-- 
1.7.10.4

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