2008-02-20 00:02:58 +01:00
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/*
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2007-10-20 01:13:56 +02:00
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* Default generic APIC driver. This handles up to 8 CPUs.
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2005-04-16 15:20:36 -07:00
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*/
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#define APIC_DEFINITION 1
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <asm/mpspec.h>
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#include <asm/mach-default/mach_apicdef.h>
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#include <asm/genapic.h>
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#include <asm/fixmap.h>
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#include <asm/apicdef.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/smp.h>
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#include <linux/init.h>
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#include <asm/mach-default/mach_apic.h>
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#include <asm/mach-default/mach_ipi.h>
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#include <asm/mach-default/mach_mpparse.h>
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x86: fix wakeup_cpu with numaq/es7000, v2
Impact: fix secondary-CPU wakeup/init path with numaq and es7000
While looking at wakeup_secondary_cpu for WAKE_SECONDARY_VIA_NMI:
|#ifdef WAKE_SECONDARY_VIA_NMI
|/*
| * Poke the other CPU in the eye via NMI to wake it up. Remember that the normal
| * INIT, INIT, STARTUP sequence will reset the chip hard for us, and this
| * won't ... remember to clear down the APIC, etc later.
| */
|static int __devinit
|wakeup_secondary_cpu(int logical_apicid, unsigned long start_eip)
|{
| unsigned long send_status, accept_status = 0;
| int maxlvt;
|...
| if (APIC_INTEGRATED(apic_version[phys_apicid])) {
| maxlvt = lapic_get_maxlvt();
I noticed that there is no warning about undefined phys_apicid...
because WAKE_SECONDARY_VIA_NMI and WAKE_SECONDARY_VIA_INIT can not be
defined at the same time. So NUMAQ is using wrong wakeup_secondary_cpu.
WAKE_SECONDARY_VIA_NMI, WAKE_SECONDARY_VIA_INIT and
WAKE_SECONDARY_VIA_MIP are variants of a weird and fragile
preprocessor-driven "HAL" mechanisms to specify the kind of secondary-CPU
wakeup strategy a given x86 kernel will use.
The vast majority of systems want to use INIT for secondary wakeup - NUMAQ
uses an NMI, (old-style-) ES7000 uses 'MIP' (a firmware driven in-memory
flag to let secondaries continue).
So convert these mechanisms to x86_quirks and add a
->wakeup_secondary_cpu() method to specify the rare exception
to the sane default.
Extend genapic accordingly as well, for 32-bit.
While looking further, I noticed that functions in wakecup.h for numaq
and es7000 are different to the default in mach_wakecpu.h - but smpboot.c
will only use default mach_wakecpu.h with smphook.h.
So we need to add mach_wakecpu.h for mach_generic, to properly support
numaq and es7000, and vectorize the following SMP init methods:
int trampoline_phys_low;
int trampoline_phys_high;
void (*wait_for_init_deassert)(atomic_t *deassert);
void (*smp_callin_clear_local_apic)(void);
void (*store_NMI_vector)(unsigned short *high, unsigned short *low);
void (*restore_NMI_vector)(unsigned short *high, unsigned short *low);
void (*inquire_remote_apic)(int apicid);
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-16 03:12:49 -08:00
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#include <asm/mach-default/mach_wakecpu.h>
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2005-04-16 15:20:36 -07:00
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2009-01-28 06:50:47 +01:00
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static void default_vector_allocation_domain(int cpu, struct cpumask *retmask)
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{
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/*
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* Careful. Some cpus do not strictly honor the set of cpus
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* specified in the interrupt destination when using lowest
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* priority interrupt delivery mode.
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*
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* In particular there was a hyperthreading cpu observed to
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* deliver interrupts to the wrong hyperthread when only one
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* hyperthread was specified in the interrupt desitination.
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*/
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*retmask = (cpumask_t) { { [0] = APIC_ALL_CPUS } };
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}
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2005-04-16 15:20:36 -07:00
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/* should be called last. */
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2007-01-11 01:52:44 +01:00
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static int probe_default(void)
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2008-02-20 00:02:58 +01:00
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{
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2005-04-16 15:20:36 -07:00
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return 1;
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2008-02-20 00:02:58 +01:00
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}
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2005-04-16 15:20:36 -07:00
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2009-01-28 03:32:03 +01:00
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struct genapic apic_default = {
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.name = "default",
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.probe = probe_default,
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2009-01-28 03:43:47 +01:00
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.acpi_madt_oem_check = NULL,
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2009-01-28 03:43:47 +01:00
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.apic_id_registered = default_apic_id_registered,
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2009-01-28 03:32:03 +01:00
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2009-01-28 04:16:01 +01:00
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.irq_delivery_mode = dest_LowestPrio,
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/* logical delivery broadcast to all CPUs: */
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.irq_dest_mode = 1,
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2009-01-28 03:32:03 +01:00
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2009-01-28 04:30:40 +01:00
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.target_cpus = default_target_cpus,
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2009-01-28 05:08:44 +01:00
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.disable_esr = 0,
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2009-01-28 05:29:25 +01:00
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.dest_logical = APIC_DEST_LOGICAL,
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2009-01-28 05:41:42 +01:00
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.check_apicid_used = default_check_apicid_used,
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.check_apicid_present = default_check_apicid_present,
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2009-01-28 03:32:03 +01:00
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2009-01-28 06:50:47 +01:00
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.vector_allocation_domain = default_vector_allocation_domain,
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2009-01-28 03:32:03 +01:00
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.init_apic_ldr = init_apic_ldr,
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.ioapic_phys_id_map = ioapic_phys_id_map,
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.setup_apic_routing = setup_apic_routing,
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.multi_timer_check = multi_timer_check,
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.apicid_to_node = apicid_to_node,
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.cpu_to_logical_apicid = cpu_to_logical_apicid,
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.cpu_present_to_apicid = cpu_present_to_apicid,
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.apicid_to_cpu_present = apicid_to_cpu_present,
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.setup_portio_remap = setup_portio_remap,
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.check_phys_apicid_present = check_phys_apicid_present,
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.enable_apic_mode = enable_apic_mode,
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.phys_pkg_id = phys_pkg_id,
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.mps_oem_check = mps_oem_check,
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.get_apic_id = get_apic_id,
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.set_apic_id = NULL,
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.apic_id_mask = APIC_ID_MASK,
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.cpu_mask_to_apicid = cpu_mask_to_apicid,
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.cpu_mask_to_apicid_and = cpu_mask_to_apicid_and,
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.send_IPI_mask = send_IPI_mask,
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.send_IPI_mask_allbutself = NULL,
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.send_IPI_allbutself = send_IPI_allbutself,
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.send_IPI_all = send_IPI_all,
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.send_IPI_self = NULL,
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.wakeup_cpu = NULL,
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.trampoline_phys_low = TRAMPOLINE_PHYS_LOW,
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.trampoline_phys_high = TRAMPOLINE_PHYS_HIGH,
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.wait_for_init_deassert = wait_for_init_deassert,
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.smp_callin_clear_local_apic = smp_callin_clear_local_apic,
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.store_NMI_vector = store_NMI_vector,
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.restore_NMI_vector = restore_NMI_vector,
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.inquire_remote_apic = inquire_remote_apic,
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};
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