[Patch V4 30/42] x86, irq, ACPI: use common irqdomain map interface to program IOAPIC pins

Jiang Liu
2014-06-09T08:19:59Z

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@linux.intel.com>
---
arch/x86/kernel/acpi/boot.c | 44 ++++++++++++-------------------------------
1 file changed, 12 insertions(+), 32 deletions(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 82ec56a4c6f4..edb48a8e0a0d 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -405,11 +405,7 @@ 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, node;

if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
return gsi;
@@ -418,39 +414,27 @@ static int mp_register_gsi(struct device *dev, u32 gsi, int trigger,
if (acpi_gbl_FADT.sci_interrupt == gsi)
return gsi;

+ trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
+ polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
+ node = dev ? dev_to_node(dev) : NUMA_NO_NODE;
+ if (mp_set_gsi_attr(gsi, trigger, polarity, node)) {
+ pr_warn("Failed to set pin attr for GSI%d\n", gsi);
+ return -1;
+ }
+
irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC);
if (irq < 0)
return irq;

- ioapic = mp_find_ioapic(gsi);
- if (ioapic < 0) {
- printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi);
- return 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;
- }
-
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)
- irq = -1;
-
return irq;
}

-static struct irq_domain_ops acpi_irqdomain_ops;
+static struct irq_domain_ops acpi_irqdomain_ops = {
+ .map = mp_irqdomain_map,
+};

static int __init
acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end)
@@ -622,10 +606,6 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
int irq = map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC | IOAPIC_MAP_CHECK);

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;
}
--
1.7.10.4