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

[Jiang Liu]

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@xxxxxxxxxxxxxxx>
---
 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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