x86, x2apic: cleanup ifdef CONFIG_INTR_REMAP in io_apic code
Impact: cleanup
Clean up #ifdefs and replace them with helper functions.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index e074eac..cf27795 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -554,16 +554,12 @@
apic = entry->apic;
pin = entry->pin;
-#ifdef CONFIG_INTR_REMAP
/*
* With interrupt-remapping, destination information comes
* from interrupt-remapping table entry.
*/
if (!irq_remapped(irq))
io_apic_write(apic, 0x11 + pin*2, dest);
-#else
- io_apic_write(apic, 0x11 + pin*2, dest);
-#endif
reg = io_apic_read(apic, 0x10 + pin*2);
reg &= ~IO_APIC_REDIR_VECTOR_MASK;
reg |= vector;
@@ -1419,9 +1415,8 @@
}
static struct irq_chip ioapic_chip;
-#ifdef CONFIG_INTR_REMAP
static struct irq_chip ir_ioapic_chip;
-#endif
+static struct irq_chip msi_ir_chip;
#define IOAPIC_AUTO -1
#define IOAPIC_EDGE 0
@@ -1460,7 +1455,6 @@
else
desc->status &= ~IRQ_LEVEL;
-#ifdef CONFIG_INTR_REMAP
if (irq_remapped(irq)) {
desc->status |= IRQ_MOVE_PCNTXT;
if (trigger)
@@ -1472,7 +1466,7 @@
handle_edge_irq, "edge");
return;
}
-#endif
+
if ((trigger == IOAPIC_AUTO && IO_APIC_irq_trigger(irq)) ||
trigger == IOAPIC_LEVEL)
set_irq_chip_and_handler_name(irq, &ioapic_chip,
@@ -1493,7 +1487,6 @@
*/
memset(entry,0,sizeof(*entry));
-#ifdef CONFIG_INTR_REMAP
if (intr_remapping_enabled) {
struct intel_iommu *iommu = map_ioapic_to_ir(apic_id);
struct irte irte;
@@ -1535,9 +1528,7 @@
* irq handler will do the explicit EOI to the io-apic.
*/
ir_entry->vector = pin;
- } else
-#endif
- {
+ } else {
entry->delivery_mode = apic->irq_delivery_mode;
entry->dest_mode = apic->irq_dest_mode;
entry->dest = destination;
@@ -1662,10 +1653,8 @@
{
struct IO_APIC_route_entry entry;
-#ifdef CONFIG_INTR_REMAP
if (intr_remapping_enabled)
return;
-#endif
memset(&entry, 0, sizeof(entry));
@@ -2395,6 +2384,11 @@
set_ir_ioapic_affinity_irq_desc(desc, mask);
}
+#else
+static inline void set_ir_ioapic_affinity_irq_desc(struct irq_desc *desc,
+ const struct cpumask *mask)
+{
+}
#endif
asmlinkage void smp_irq_move_cleanup_interrupt(void)
@@ -2883,10 +2877,8 @@
* 8259A.
*/
if (pin1 == -1) {
-#ifdef CONFIG_INTR_REMAP
if (intr_remapping_enabled)
panic("BIOS bug: timer not connected to IO-APIC");
-#endif
pin1 = pin2;
apic1 = apic2;
no_pin1 = 1;
@@ -2922,10 +2914,8 @@
clear_IO_APIC_pin(0, pin1);
goto out;
}
-#ifdef CONFIG_INTR_REMAP
if (intr_remapping_enabled)
panic("timer doesn't work through Interrupt-remapped IO-APIC");
-#endif
local_irq_disable();
clear_IO_APIC_pin(apic1, pin1);
if (!no_pin1)
@@ -3219,9 +3209,7 @@
if (desc)
desc->chip_data = cfg;
-#ifdef CONFIG_INTR_REMAP
free_irte(irq);
-#endif
spin_lock_irqsave(&vector_lock, flags);
__clear_irq_vector(irq, cfg);
spin_unlock_irqrestore(&vector_lock, flags);
@@ -3247,7 +3235,6 @@
dest = apic->cpu_mask_to_apicid_and(cfg->domain, apic->target_cpus());
-#ifdef CONFIG_INTR_REMAP
if (irq_remapped(irq)) {
struct irte irte;
int ir_index;
@@ -3273,9 +3260,7 @@
MSI_ADDR_IR_SHV |
MSI_ADDR_IR_INDEX1(ir_index) |
MSI_ADDR_IR_INDEX2(ir_index);
- } else
-#endif
- {
+ } else {
if (x2apic_enabled())
msg->address_hi = MSI_ADDR_BASE_HI |
MSI_ADDR_EXT_DEST_ID(dest);
@@ -3392,6 +3377,7 @@
#endif
.retrigger = ioapic_retrigger_irq,
};
+#endif
/*
* Map the PCI dev to the corresponding remapping hardware unit
@@ -3419,7 +3405,6 @@
}
return index;
}
-#endif
static int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int irq)
{
@@ -3433,7 +3418,6 @@
set_irq_msi(irq, msidesc);
write_msi_msg(irq, &msg);
-#ifdef CONFIG_INTR_REMAP
if (irq_remapped(irq)) {
struct irq_desc *desc = irq_to_desc(irq);
/*
@@ -3442,7 +3426,6 @@
desc->status |= IRQ_MOVE_PCNTXT;
set_irq_chip_and_handler_name(irq, &msi_ir_chip, handle_edge_irq, "edge");
} else
-#endif
set_irq_chip_and_handler_name(irq, &msi_chip, handle_edge_irq, "edge");
dev_printk(KERN_DEBUG, &dev->dev, "irq %d for MSI/MSI-X\n", irq);
@@ -3456,11 +3439,8 @@
int ret, sub_handle;
struct msi_desc *msidesc;
unsigned int irq_want;
-
-#ifdef CONFIG_INTR_REMAP
struct intel_iommu *iommu = 0;
int index = 0;
-#endif
irq_want = nr_irqs_gsi;
sub_handle = 0;
@@ -3469,7 +3449,6 @@
if (irq == 0)
return -1;
irq_want = irq + 1;
-#ifdef CONFIG_INTR_REMAP
if (!intr_remapping_enabled)
goto no_ir;
@@ -3497,7 +3476,6 @@
set_irte_irq(irq, iommu, index, sub_handle);
}
no_ir:
-#endif
ret = setup_msi_irq(dev, msidesc, irq);
if (ret < 0)
goto error;
@@ -4032,11 +4010,9 @@
else
mask = apic->target_cpus();
-#ifdef CONFIG_INTR_REMAP
if (intr_remapping_enabled)
set_ir_ioapic_affinity_irq_desc(desc, mask);
else
-#endif
set_ioapic_affinity_irq_desc(desc, mask);
}