} irq_2_pin[PIN_MAP_SIZE];
int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
-#ifdef CONFIG_PCI_USE_VECTOR
+#ifdef CONFIG_PCI_MSI
#define vector_to_irq(vector) \
(platform_legacy_irq(vector) ? vector : vector_irq[vector])
#else
struct irq_pin_list *entry = irq_2_pin + irq;
unsigned int apicid_value;
- apicid_value = cpu_mask_to_apicid(mk_cpumask_const(cpumask));
+ apicid_value = cpu_mask_to_apicid(cpumask);
/* Prepare to do the io_apic_write */
apicid_value = apicid_value << 24;
spin_lock_irqsave(&ioapic_lock, flags);
return;
}
-int balanced_irq(void *unused)
+static int balanced_irq(void *unused)
{
int i;
unsigned long prev_balance_time = jiffies;
pending_irq_balance_cpumask[i] = cpumask_of_cpu(0);
}
-repeat:
- set_current_state(TASK_INTERRUPTIBLE);
- time_remaining = schedule_timeout(time_remaining);
- if (time_after(jiffies, prev_balance_time+balanced_irq_interval)) {
- Dprintk("balanced_irq: calling do_irq_balance() %lu\n",
- jiffies);
- do_irq_balance();
- prev_balance_time = jiffies;
- time_remaining = balanced_irq_interval;
+ for ( ; ; ) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ time_remaining = schedule_timeout(time_remaining);
+ if (time_after(jiffies,
+ prev_balance_time+balanced_irq_interval)) {
+ do_irq_balance();
+ prev_balance_time = jiffies;
+ time_remaining = balanced_irq_interval;
+ }
}
- goto repeat;
+ return 0;
}
static int __init balanced_irq_init(void)
/* irq_vectors is indexed by the sum of all RTEs in all I/O APICs. */
u8 irq_vector[NR_IRQ_VECTORS] = { FIRST_DEVICE_VECTOR , 0 };
-#ifdef CONFIG_PCI_USE_VECTOR
+#ifdef CONFIG_PCI_MSI
int assign_irq_vector(int irq)
#else
int __init assign_irq_vector(int irq)
);
}
}
+ if (use_pci_vector())
+ printk(KERN_INFO "Using vector-based indexing\n");
printk(KERN_DEBUG "IRQ to pin mappings:\n");
for (i = 0; i < NR_IRQS; i++) {
struct irq_pin_list *entry = irq_2_pin + i;
if (entry->pin < 0)
continue;
- printk(KERN_DEBUG "IRQ%d ", i);
+ if (use_pci_vector() && !platform_legacy_irq(i))
+ printk(KERN_DEBUG "IRQ%d ", IO_APIC_VECTOR(i));
+ else
+ printk(KERN_DEBUG "IRQ%d ", i);
for (;;) {
printk("-> %d:%d", entry->apic, entry->pin);
if (!entry->next)
*/
void disable_IO_APIC(void)
{
+ int pin;
/*
* Clear the IO-APIC before rebooting:
*/
clear_IO_APIC();
+ /*
+ * If the i82559 is routed through an IOAPIC
+ * Put that IOAPIC in virtual wire mode
+ * so legacy interrups can be delivered.
+ */
+ pin = find_isa_irq_pin(0, mp_ExtINT);
+ if (pin != -1) {
+ struct IO_APIC_route_entry entry;
+ unsigned long flags;
+
+ memset(&entry, 0, sizeof(entry));
+ entry.mask = 0; /* Enabled */
+ entry.trigger = 0; /* Edge */
+ entry.irr = 0;
+ entry.polarity = 0; /* High */
+ entry.delivery_status = 0;
+ entry.dest_mode = 0; /* Physical */
+ entry.delivery_mode = 7; /* ExtInt */
+ entry.vector = 0;
+ entry.dest.physical.physical_dest = 0;
+
+
+ /*
+ * Add it to the IO-APIC irq-routing table:
+ */
+ spin_lock_irqsave(&ioapic_lock, flags);
+ io_apic_write(0, 0x11+2*pin, *(((int *)&entry)+1));
+ io_apic_write(0, 0x10+2*pin, *(((int *)&entry)+0));
+ spin_unlock_irqrestore(&ioapic_lock, flags);
+ }
disconnect_bsp_APIC();
}
reg_00.raw = io_apic_read(apic, 0);
spin_unlock_irqrestore(&ioapic_lock, flags);
if (reg_00.bits.ID != mp_ioapics[apic].mpc_apicid)
- panic("could not set ID!\n");
+ printk("could not set ID!\n");
else
printk(" ok.\n");
}
}
}
-#ifdef CONFIG_PCI_USE_VECTOR
+#ifdef CONFIG_PCI_MSI
static unsigned int startup_edge_ioapic_vector(unsigned int vector)
{
int irq = vector_to_irq(vector);
return;
}
printk(" failed :(.\n");
- panic("IO-APIC + timer doesn't work! pester mingo@redhat.com");
+ panic("IO-APIC + timer doesn't work! Try using the 'noapic' kernel parameter\n");
}
/*