mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-04 01:49:36 +00:00
![Suresh Siddha](/assets/img/avatar_default.png)
This will pave the way for each apic driver to be self-contained and eliminate the need for apic_probe[]. Order in which apic drivers are listed in the .apicdrivers section is important, as this determines the apic probe order. And this is enforced by the ordering of apic driver files in the Makefile and the macros apic_driver()/apic_drivers(). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Tested-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: steiner@sgi.com Cc: gorcunov@openvz.org Cc: yinghai@kernel.org Link: http://lkml.kernel.org/r/20110521005526.068775085@sbsiddha-MOBL3.sc.intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
#include <linux/threads.h>
|
|
#include <linux/cpumask.h>
|
|
#include <linux/string.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/init.h>
|
|
#include <linux/dmar.h>
|
|
|
|
#include <asm/smp.h>
|
|
#include <asm/x2apic.h>
|
|
|
|
int x2apic_phys;
|
|
|
|
static int set_x2apic_phys_mode(char *arg)
|
|
{
|
|
x2apic_phys = 1;
|
|
return 0;
|
|
}
|
|
early_param("x2apic_phys", set_x2apic_phys_mode);
|
|
|
|
static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
|
|
{
|
|
if (x2apic_phys)
|
|
return x2apic_enabled();
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
__x2apic_send_IPI_mask(const struct cpumask *mask, int vector, int apic_dest)
|
|
{
|
|
unsigned long query_cpu;
|
|
unsigned long this_cpu;
|
|
unsigned long flags;
|
|
|
|
x2apic_wrmsr_fence();
|
|
|
|
local_irq_save(flags);
|
|
|
|
this_cpu = smp_processor_id();
|
|
for_each_cpu(query_cpu, mask) {
|
|
if (apic_dest == APIC_DEST_ALLBUT && this_cpu == query_cpu)
|
|
continue;
|
|
__x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu),
|
|
vector, APIC_DEST_PHYSICAL);
|
|
}
|
|
local_irq_restore(flags);
|
|
}
|
|
|
|
static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector)
|
|
{
|
|
__x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLINC);
|
|
}
|
|
|
|
static void
|
|
x2apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
|
|
{
|
|
__x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLBUT);
|
|
}
|
|
|
|
static void x2apic_send_IPI_allbutself(int vector)
|
|
{
|
|
__x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLBUT);
|
|
}
|
|
|
|
static void x2apic_send_IPI_all(int vector)
|
|
{
|
|
__x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLINC);
|
|
}
|
|
|
|
static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask)
|
|
{
|
|
/*
|
|
* We're using fixed IRQ delivery, can only return one phys APIC ID.
|
|
* May as well be the first.
|
|
*/
|
|
int cpu = cpumask_first(cpumask);
|
|
|
|
if ((unsigned)cpu < nr_cpu_ids)
|
|
return per_cpu(x86_cpu_to_apicid, cpu);
|
|
else
|
|
return BAD_APICID;
|
|
}
|
|
|
|
static unsigned int
|
|
x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
|
|
const struct cpumask *andmask)
|
|
{
|
|
int cpu;
|
|
|
|
/*
|
|
* We're using fixed IRQ delivery, can only return one phys APIC ID.
|
|
* May as well be the first.
|
|
*/
|
|
for_each_cpu_and(cpu, cpumask, andmask) {
|
|
if (cpumask_test_cpu(cpu, cpu_online_mask))
|
|
break;
|
|
}
|
|
|
|
return per_cpu(x86_cpu_to_apicid, cpu);
|
|
}
|
|
|
|
static void init_x2apic_ldr(void)
|
|
{
|
|
}
|
|
|
|
static int x2apic_phys_probe(void)
|
|
{
|
|
if (x2apic_mode && x2apic_phys)
|
|
return 1;
|
|
|
|
return apic == &apic_x2apic_phys;
|
|
}
|
|
|
|
struct apic apic_x2apic_phys = {
|
|
|
|
.name = "physical x2apic",
|
|
.probe = x2apic_phys_probe,
|
|
.acpi_madt_oem_check = x2apic_acpi_madt_oem_check,
|
|
.apic_id_registered = x2apic_apic_id_registered,
|
|
|
|
.irq_delivery_mode = dest_Fixed,
|
|
.irq_dest_mode = 0, /* physical */
|
|
|
|
.target_cpus = x2apic_target_cpus,
|
|
.disable_esr = 0,
|
|
.dest_logical = 0,
|
|
.check_apicid_used = NULL,
|
|
.check_apicid_present = NULL,
|
|
|
|
.vector_allocation_domain = x2apic_vector_allocation_domain,
|
|
.init_apic_ldr = init_x2apic_ldr,
|
|
|
|
.ioapic_phys_id_map = NULL,
|
|
.setup_apic_routing = NULL,
|
|
.multi_timer_check = NULL,
|
|
.cpu_present_to_apicid = default_cpu_present_to_apicid,
|
|
.apicid_to_cpu_present = NULL,
|
|
.setup_portio_remap = NULL,
|
|
.check_phys_apicid_present = default_check_phys_apicid_present,
|
|
.enable_apic_mode = NULL,
|
|
.phys_pkg_id = x2apic_phys_pkg_id,
|
|
.mps_oem_check = NULL,
|
|
|
|
.get_apic_id = x2apic_get_apic_id,
|
|
.set_apic_id = x2apic_set_apic_id,
|
|
.apic_id_mask = 0xFFFFFFFFu,
|
|
|
|
.cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
|
|
.cpu_mask_to_apicid_and = x2apic_cpu_mask_to_apicid_and,
|
|
|
|
.send_IPI_mask = x2apic_send_IPI_mask,
|
|
.send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself,
|
|
.send_IPI_allbutself = x2apic_send_IPI_allbutself,
|
|
.send_IPI_all = x2apic_send_IPI_all,
|
|
.send_IPI_self = x2apic_send_IPI_self,
|
|
|
|
.trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
|
|
.trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
|
|
.wait_for_init_deassert = NULL,
|
|
.smp_callin_clear_local_apic = NULL,
|
|
.inquire_remote_apic = NULL,
|
|
|
|
.read = native_apic_msr_read,
|
|
.write = native_apic_msr_write,
|
|
.icr_read = native_x2apic_icr_read,
|
|
.icr_write = native_x2apic_icr_write,
|
|
.wait_icr_idle = native_x2apic_wait_icr_idle,
|
|
.safe_wait_icr_idle = native_safe_x2apic_wait_icr_idle,
|
|
};
|
|
|
|
apic_driver(apic_x2apic_phys);
|