linux-kernel - [Patch V4 33/42] x86, irq, devicetree: use common irqdomain map interface to program IOAPIC pins

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Date:	Mon,  9 Jun 2014 16:20:02 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Grant Likely <grant.likely@...aro.org>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>, x86@...nel.org,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Rob Herring <rob.herring@...xeda.com>,
	Michal Simek <monstr@...str.eu>,
	Tony Lindgren <tony@...mide.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tony Luck <tony.luck@...el.com>,
	Joerg Roedel <joro@...tes.org>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: [Patch V4 33/42] x86, irq, devicetree: use common irqdomain map interface to program IOAPIC 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 <jiang.liu@...ux.intel.com>
---
 arch/x86/kernel/devicetree.c |   14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c
index ee4737f4a1af..0c938dd7b3c8 100644
--- a/arch/x86/kernel/devicetree.c
+++ b/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;
@@ -217,12 +215,9 @@ 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;
@@ -230,6 +225,7 @@ static int ioapic_xlate(struct irq_domain *domain,
 }
 
 const struct irq_domain_ops ioapic_irq_domain_ops = {
+	.map = mp_irqdomain_map,
 	.xlate = ioapic_xlate,
 };
 
-- 
1.7.10.4

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