static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if (x2apic_phys)
return x2apic_enabled();
else if ((acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) &&
(acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL) &&
x2apic_enabled()) {
printk(KERN_DEBUG "System requires x2apic physical mode\n");
return 1;
}
else
return 0;
}
static void irq_msi_compose_msg(struct irq_data *data, struct msi_msg *msg)
{
struct irq_cfg *cfg = irqd_cfg(data);
msg->address_hi = MSI_ADDR_BASE_HI;
if (x2apic_enabled())
msg->address_hi |= MSI_ADDR_EXT_DEST_ID(cfg->dest_apicid);
msg->address_lo =
MSI_ADDR_BASE_LO |
((apic->irq_dest_mode == 0) ?
MSI_ADDR_DEST_MODE_PHYSICAL :
MSI_ADDR_DEST_MODE_LOGICAL) |
((apic->irq_delivery_mode != dest_LowestPrio) ?
MSI_ADDR_REDIRECTION_CPU :
MSI_ADDR_REDIRECTION_LOWPRI) |
MSI_ADDR_DEST_ID(cfg->dest_apicid);
msg->data =
MSI_DATA_TRIGGER_EDGE |
MSI_DATA_LEVEL_ASSERT |
((apic->irq_delivery_mode != dest_LowestPrio) ?
MSI_DATA_DELIVERY_FIXED :
MSI_DATA_DELIVERY_LOWPRI) |
MSI_DATA_VECTOR(cfg->vector);
}
static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if (x2apic_phys)
return x2apic_enabled();
else
return 0;
}
void check_x2apic(void)
{
if (x2apic_enabled()) {
pr_info("x2apic enabled by BIOS, switching to x2apic ops\n");
x2apic_preenabled = x2apic_mode = 1;
}
}
static __init int setup_nox2apic(char *str)
{
if (x2apic_enabled()) {
pr_warning("Bios already enabled x2apic, "
"can't enforce nox2apic");
return 0;
}
setup_clear_cpu_cap(X86_FEATURE_X2APIC);
return 0;
}
static void __init jailhouse_x2apic_init(void)
{
#ifdef CONFIG_X86_X2APIC
if (!x2apic_enabled())
return;
/*
* We do not have access to IR inside Jailhouse non-root cells. So
* we have to run in physical mode.
*/
x2apic_phys = 1;
/*
* This will trigger the switch to apic_x2apic_phys. Empty OEM IDs
* ensure that only this APIC driver picks up the call.
*/
default_acpi_madt_oem_check("", "");
#endif
}
static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
return x2apic_enabled();
}
static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
return x2apic_enabled() && (x2apic_phys || x2apic_fadt_phys());
}