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#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include "intr_remapping.h"
int intr_remapping_enabled;
int disable_intremap;
int disable_sourceid_checking;
int no_x2apic_optout;
static struct irq_remap_ops *remap_ops;
static __init int setup_nointremap(char *str)
{
disable_intremap = 1;
return 0;
}
early_param("nointremap", setup_nointremap);
static __init int setup_intremap(char *str)
{
if (!str)
return -EINVAL;
while (*str) {
if (!strncmp(str, "on", 2))
disable_intremap = 0;
else if (!strncmp(str, "off", 3))
disable_intremap = 1;
else if (!strncmp(str, "nosid", 5))
disable_sourceid_checking = 1;
else if (!strncmp(str, "no_x2apic_optout", 16))
no_x2apic_optout = 1;
str += strcspn(str, ",");
while (*str == ',')
str++;
}
return 0;
}
early_param("intremap", setup_intremap);
void __init setup_intr_remapping(void)
{
remap_ops = &intel_irq_remap_ops;
}
int intr_remapping_supported(void)
{
if (disable_intremap)
return 0;
if (!remap_ops || !remap_ops->supported)
return 0;
return remap_ops->supported();
}
int __init intr_hardware_init(void)
{
if (!remap_ops || !remap_ops->hardware_init)
return -ENODEV;
return remap_ops->hardware_init();
}
int __init intr_hardware_enable(void)
{
if (!remap_ops || !remap_ops->hardware_enable)
return -ENODEV;
return remap_ops->hardware_enable();
}
void intr_hardware_disable(void)
{
if (!remap_ops || !remap_ops->hardware_disable)
return;
remap_ops->hardware_disable();
}
int intr_hardware_reenable(int mode)
{
if (!remap_ops || !remap_ops->hardware_reenable)
return 0;
return remap_ops->hardware_reenable(mode);
}
int __init intr_enable_fault_handling(void)
{
if (!remap_ops || !remap_ops->enable_faulting)
return -ENODEV;
return remap_ops->enable_faulting();
}
int intr_setup_ioapic_entry(int irq,
struct IO_APIC_route_entry *entry,
unsigned int destination, int vector,
struct io_apic_irq_attr *attr)
{
if (!remap_ops || !remap_ops->setup_ioapic_entry)
return -ENODEV;
return remap_ops->setup_ioapic_entry(irq, entry, destination,
vector, attr);
}
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