linux-kernel - [RFC Patch Part1 V1 26/30] x86, irq, ACPI: use common irqdomain map interface to program IOAPIC pins

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Message-Id: <1400227550-5935-27-git-send-email-jiang.liu@linux.intel.com>
Date:	Fri, 16 May 2014 16:05:46 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	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>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
	x86@...nel.org
Cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	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, sfi-devel@...plefirmware.org,
	linux-pm@...r.kernel.org
Subject: [RFC Patch Part1 V1 26/30] x86, irq, ACPI: use common irqdomain map interface to program IOAPIC pins

Refine ACPI 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/acpi/boot.c |   48 ++++++++++++++++---------------------------
 1 file changed, 18 insertions(+), 30 deletions(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 1ee639e74d50..50f06c9d1e2a 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -332,7 +332,9 @@ static void  mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
 static int mp_register_gsi(struct device *dev, u32 gsi, int trigger,
 			   int polarity);
 
-static struct irq_domain_ops acpi_irqdomain_ops;
+static struct irq_domain_ops acpi_irqdomain_ops = {
+	.map = mp_irqdomain_map,
+};
 
 static struct irq_domain *acpi_create_irqdomain(int idx, void *arg)
 {
@@ -512,10 +514,6 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
 	int irq = map_gsi_to_irq(gsi, 1);
 
 	if (irq >= 0) {
-#ifdef CONFIG_X86_IO_APIC
-		if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC)
-			setup_IO_APIC_irq_extra(gsi);
-#endif
 		*irqp = irq;
 		return 0;
 	}
@@ -1047,11 +1045,7 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
 static int mp_register_gsi(struct device *dev, u32 gsi, int trigger,
 			   int polarity)
 {
-	int irq;
-	int ioapic;
-	int ioapic_pin;
-	struct io_apic_irq_attr irq_attr;
-	int ret;
+	int irq, ioapic, pin, node;
 
 	if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
 		return gsi;
@@ -1060,35 +1054,29 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger,
 	if (acpi_gbl_FADT.sci_interrupt == gsi)
 		return gsi;
 
-	irq = map_gsi_to_irq(gsi, 1);
-	if (irq < 0)
-		return ACPI_INVALID_GSI;
-
 	ioapic = mp_find_ioapic(gsi);
 	if (ioapic < 0) {
-		printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
-		return gsi;
+		pr_warn("No IOAPIC for GSI %u\n", gsi);
+		return ACPI_INVALID_GSI;
 	}
 
-	ioapic_pin = mp_find_ioapic_pin(ioapic, gsi);
-
-	if (ioapic_pin > MP_MAX_IOAPIC_PIN) {
-		printk(KERN_ERR "Invalid reference to IOAPIC pin "
-		       "%d-%d\n", mpc_ioapic_id(ioapic),
-		       ioapic_pin);
-		return gsi;
+	pin = mp_find_ioapic_pin(ioapic, gsi);
+	node = dev ? dev_to_node(dev) : NUMA_NO_NODE;
+	if (mp_set_pin_attr(ioapic, pin,
+			    trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
+			    polarity == ACPI_ACTIVE_HIGH ? 0 : 1,
+			    node)) {
+		pr_warn("Failed to set pin attr for GSI%d\n", gsi);
+		return ACPI_INVALID_GSI;
 	}
 
+	irq = map_gsi_to_irq(gsi, 1);
+	if (irq < 0)
+		return ACPI_INVALID_GSI;
+
 	if (enable_update_mptable)
 		mp_config_acpi_gsi(dev, gsi, trigger, polarity);
 
-	set_io_apic_irq_attr(&irq_attr, ioapic, ioapic_pin,
-			     trigger == ACPI_EDGE_SENSITIVE ? 0 : 1,
-			     polarity == ACPI_ACTIVE_HIGH ? 0 : 1);
-	ret = io_apic_set_pci_routing(dev, irq, &irq_attr);
-	if (ret < 0)
-		gsi = ACPI_INVALID_GSI;
-
 	return gsi;
 }
 
-- 
1.7.10.4

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