Contributors: 58
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Gleixner |
1004 |
40.98% |
62 |
35.03% |
| Ingo Molnar |
216 |
8.82% |
10 |
5.65% |
| Suresh B. Siddha |
180 |
7.35% |
9 |
5.08% |
| Yinghai Lu |
155 |
6.33% |
12 |
6.78% |
| Paolo Bonzini |
112 |
4.57% |
1 |
0.56% |
| Andi Kleen |
101 |
4.12% |
4 |
2.26% |
| Cyrill V. Gorcunov |
84 |
3.43% |
5 |
2.82% |
| Dave Hansen |
72 |
2.94% |
1 |
0.56% |
| Jeremy Fitzhardinge |
54 |
2.20% |
3 |
1.69% |
| Michael S. Tsirkin |
49 |
2.00% |
3 |
1.69% |
| Dou Liyang |
35 |
1.43% |
3 |
1.69% |
| Mike Travis |
31 |
1.27% |
3 |
1.69% |
| Maciej W. Rozycki |
30 |
1.22% |
1 |
0.56% |
| Alok N Kataria |
26 |
1.06% |
1 |
0.56% |
| Jacob jun Pan |
23 |
0.94% |
4 |
2.26% |
| David Woodhouse |
20 |
0.82% |
3 |
1.69% |
| Ravikiran G. Thirumalai |
20 |
0.82% |
1 |
0.56% |
| Kuppuswamy Sathyanarayanan |
17 |
0.69% |
1 |
0.56% |
| Jack Steiner |
16 |
0.65% |
1 |
0.56% |
| Nicolai Stange |
16 |
0.65% |
2 |
1.13% |
| Hidehiro Kawai |
14 |
0.57% |
1 |
0.56% |
| Linus Torvalds |
13 |
0.53% |
3 |
1.69% |
| Daniel J Blueman |
13 |
0.53% |
1 |
0.56% |
| Sean Christopherson |
13 |
0.53% |
1 |
0.56% |
| Eric W. Biedermann |
9 |
0.37% |
2 |
1.13% |
| Yoshihiro Yunomae |
9 |
0.37% |
1 |
0.56% |
| Adam Dunlap |
8 |
0.33% |
1 |
0.56% |
| Ricardo Ribalda Delgado |
8 |
0.33% |
1 |
0.56% |
| Ville Syrjälä |
8 |
0.33% |
1 |
0.56% |
| Weidong Han |
7 |
0.29% |
1 |
0.56% |
| Borislav Petkov |
7 |
0.29% |
3 |
1.69% |
| Rusty Russell |
7 |
0.29% |
2 |
1.13% |
| Ivan Vecera |
7 |
0.29% |
1 |
0.56% |
| Jiang Liu |
6 |
0.24% |
1 |
0.56% |
| Jaswinder Singh Rajput |
6 |
0.24% |
2 |
1.13% |
| Linus Torvalds (pre-git) |
5 |
0.20% |
2 |
1.13% |
| James Cleverdon |
4 |
0.16% |
1 |
0.56% |
| Venkatesh Pallipadi |
4 |
0.16% |
1 |
0.56% |
| Seiji Aguchi |
4 |
0.16% |
1 |
0.56% |
| David Rientjes |
3 |
0.12% |
1 |
0.56% |
| H. Peter Anvin |
3 |
0.12% |
1 |
0.56% |
| Sebastian Andrzej Siewior |
3 |
0.12% |
1 |
0.56% |
| Matt Domsch |
3 |
0.12% |
1 |
0.56% |
| Robert Richter |
3 |
0.12% |
1 |
0.56% |
| Alexander Gordeev |
3 |
0.12% |
2 |
1.13% |
| Joe Perches |
2 |
0.08% |
1 |
0.56% |
| Patrick Mochel |
2 |
0.08% |
1 |
0.56% |
| Uros Bizjak |
2 |
0.08% |
1 |
0.56% |
| Nadia Yvette Chambers |
2 |
0.08% |
1 |
0.56% |
| Richard A. Holden III |
2 |
0.08% |
1 |
0.56% |
| René Herman |
2 |
0.08% |
1 |
0.56% |
| Daniel Drake |
1 |
0.04% |
1 |
0.56% |
| Len Brown |
1 |
0.04% |
1 |
0.56% |
| Arun Sharma |
1 |
0.04% |
1 |
0.56% |
| Jan Beulich |
1 |
0.04% |
1 |
0.56% |
| Andrew Morton |
1 |
0.04% |
1 |
0.56% |
| Dave Jones |
1 |
0.04% |
1 |
0.56% |
| Li RongQing |
1 |
0.04% |
1 |
0.56% |
| Total |
2450 |
|
177 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _ASM_X86_APIC_H
#define _ASM_X86_APIC_H
#include <linux/cpumask.h>
#include <linux/static_call.h>
#include <asm/alternative.h>
#include <asm/cpufeature.h>
#include <asm/apicdef.h>
#include <linux/atomic.h>
#include <asm/fixmap.h>
#include <asm/mpspec.h>
#include <asm/msr.h>
#include <asm/hardirq.h>
#include <asm/io.h>
#include <asm/posted_intr.h>
#define ARCH_APICTIMER_STOPS_ON_C3 1
/*
* Debugging macros
*/
#define APIC_QUIET 0
#define APIC_VERBOSE 1
#define APIC_DEBUG 2
/* Macros for apic_extnmi which controls external NMI masking */
#define APIC_EXTNMI_BSP 0 /* Default */
#define APIC_EXTNMI_ALL 1
#define APIC_EXTNMI_NONE 2
/*
* Define the default level of output to be very little
* This can be turned up by using apic=verbose for more
* information and apic=debug for _lots_ of information.
* apic_verbosity is defined in apic.c
*/
#define apic_printk(v, s, a...) do { \
if ((v) <= apic_verbosity) \
printk(s, ##a); \
} while (0)
#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32)
extern void x86_32_probe_apic(void);
#else
static inline void x86_32_probe_apic(void) { }
#endif
extern u32 cpuid_to_apicid[];
#define CPU_ACPIID_INVALID U32_MAX
#ifdef CONFIG_X86_LOCAL_APIC
extern int apic_verbosity;
extern int local_apic_timer_c2_ok;
extern bool apic_is_disabled;
extern unsigned int lapic_timer_period;
extern enum apic_intr_mode_id apic_intr_mode;
enum apic_intr_mode_id {
APIC_PIC,
APIC_VIRTUAL_WIRE,
APIC_VIRTUAL_WIRE_NO_CONFIG,
APIC_SYMMETRIC_IO,
APIC_SYMMETRIC_IO_NO_ROUTING
};
/*
* With 82489DX we can't rely on apic feature bit
* retrieved via cpuid but still have to deal with
* such an apic chip so we assume that SMP configuration
* is found from MP table (64bit case uses ACPI mostly
* which set smp presence flag as well so we are safe
* to use this helper too).
*/
static inline bool apic_from_smp_config(void)
{
return smp_found_config && !apic_is_disabled;
}
/*
* Basic functions accessing APICs.
*/
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#endif
static inline void native_apic_mem_write(u32 reg, u32 v)
{
volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg);
alternative_io("movl %0, %1", "xchgl %0, %1", X86_BUG_11AP,
ASM_OUTPUT2("=r" (v), "=m" (*addr)),
ASM_OUTPUT2("0" (v), "m" (*addr)));
}
static inline u32 native_apic_mem_read(u32 reg)
{
return readl((void __iomem *)(APIC_BASE + reg));
}
static inline void native_apic_mem_eoi(void)
{
native_apic_mem_write(APIC_EOI, APIC_EOI_ACK);
}
extern void native_apic_icr_write(u32 low, u32 id);
extern u64 native_apic_icr_read(void);
static inline bool apic_is_x2apic_enabled(void)
{
u64 msr;
if (rdmsrl_safe(MSR_IA32_APICBASE, &msr))
return false;
return msr & X2APIC_ENABLE;
}
extern void enable_IR_x2apic(void);
extern int get_physical_broadcast(void);
extern int lapic_get_maxlvt(void);
extern void clear_local_APIC(void);
extern void disconnect_bsp_APIC(int virt_wire_setup);
extern void disable_local_APIC(void);
extern void apic_soft_disable(void);
extern void lapic_shutdown(void);
extern void sync_Arb_IDs(void);
extern void init_bsp_APIC(void);
extern void apic_intr_mode_select(void);
extern void apic_intr_mode_init(void);
extern void init_apic_mappings(void);
void register_lapic_address(unsigned long address);
extern void setup_boot_APIC_clock(void);
extern void setup_secondary_APIC_clock(void);
extern void lapic_update_tsc_freq(void);
#ifdef CONFIG_X86_64
static inline bool apic_force_enable(unsigned long addr)
{
return false;
}
#else
extern bool apic_force_enable(unsigned long addr);
#endif
extern void apic_ap_setup(void);
/*
* On 32bit this is mach-xxx local
*/
#ifdef CONFIG_X86_64
extern int apic_is_clustered_box(void);
#else
static inline int apic_is_clustered_box(void)
{
return 0;
}
#endif
extern int setup_APIC_eilvt(u8 lvt_off, u8 vector, u8 msg_type, u8 mask);
extern void lapic_assign_system_vectors(void);
extern void lapic_assign_legacy_vector(unsigned int isairq, bool replace);
extern void lapic_update_legacy_vectors(void);
extern void lapic_online(void);
extern void lapic_offline(void);
extern bool apic_needs_pit(void);
extern void apic_send_IPI_allbutself(unsigned int vector);
extern void topology_register_apic(u32 apic_id, u32 acpi_id, bool present);
extern void topology_register_boot_apic(u32 apic_id);
extern int topology_hotplug_apic(u32 apic_id, u32 acpi_id);
extern void topology_hotunplug_apic(unsigned int cpu);
extern void topology_apply_cmdline_limits_early(void);
extern void topology_init_possible_cpus(void);
extern void topology_reset_possible_cpus_up(void);
#else /* !CONFIG_X86_LOCAL_APIC */
static inline void lapic_shutdown(void) { }
#define local_apic_timer_c2_ok 1
static inline void init_apic_mappings(void) { }
static inline void disable_local_APIC(void) { }
# define setup_boot_APIC_clock x86_init_noop
# define setup_secondary_APIC_clock x86_init_noop
static inline void lapic_update_tsc_freq(void) { }
static inline void init_bsp_APIC(void) { }
static inline void apic_intr_mode_select(void) { }
static inline void apic_intr_mode_init(void) { }
static inline void lapic_assign_system_vectors(void) { }
static inline void lapic_assign_legacy_vector(unsigned int i, bool r) { }
static inline bool apic_needs_pit(void) { return true; }
static inline void topology_apply_cmdline_limits_early(void) { }
static inline void topology_init_possible_cpus(void) { }
#endif /* !CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_X86_X2APIC
static inline void native_apic_msr_write(u32 reg, u32 v)
{
if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR ||
reg == APIC_LVR)
return;
wrmsr(APIC_BASE_MSR + (reg >> 4), v, 0);
}
static inline void native_apic_msr_eoi(void)
{
__wrmsr(APIC_BASE_MSR + (APIC_EOI >> 4), APIC_EOI_ACK, 0);
}
static inline u32 native_apic_msr_read(u32 reg)
{
u64 msr;
if (reg == APIC_DFR)
return -1;
rdmsrl(APIC_BASE_MSR + (reg >> 4), msr);
return (u32)msr;
}
static inline void native_x2apic_icr_write(u32 low, u32 id)
{
wrmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), ((__u64) id) << 32 | low);
}
static inline u64 native_x2apic_icr_read(void)
{
unsigned long val;
rdmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), val);
return val;
}
extern int x2apic_mode;
extern int x2apic_phys;
extern void __init x2apic_set_max_apicid(u32 apicid);
extern void x2apic_setup(void);
static inline int x2apic_enabled(void)
{
return boot_cpu_has(X86_FEATURE_X2APIC) && apic_is_x2apic_enabled();
}
#define x2apic_supported() (boot_cpu_has(X86_FEATURE_X2APIC))
#else /* !CONFIG_X86_X2APIC */
static inline void x2apic_setup(void) { }
static inline int x2apic_enabled(void) { return 0; }
static inline u32 native_apic_msr_read(u32 reg) { BUG(); }
#define x2apic_mode (0)
#define x2apic_supported() (0)
#endif /* !CONFIG_X86_X2APIC */
extern void __init check_x2apic(void);
struct irq_data;
/*
* Copyright 2004 James Cleverdon, IBM.
*
* Generic APIC sub-arch data struct.
*
* Hacked for x86-64 by James Cleverdon from i386 architecture code by
* Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
* James Cleverdon.
*/
struct apic {
/* Hotpath functions first */
void (*eoi)(void);
void (*native_eoi)(void);
void (*write)(u32 reg, u32 v);
u32 (*read)(u32 reg);
/* IPI related functions */
void (*wait_icr_idle)(void);
u32 (*safe_wait_icr_idle)(void);
void (*send_IPI)(int cpu, int vector);
void (*send_IPI_mask)(const struct cpumask *mask, int vector);
void (*send_IPI_mask_allbutself)(const struct cpumask *msk, int vec);
void (*send_IPI_allbutself)(int vector);
void (*send_IPI_all)(int vector);
void (*send_IPI_self)(int vector);
u32 disable_esr : 1,
dest_mode_logical : 1,
x2apic_set_max_apicid : 1,
nmi_to_offline_cpu : 1;
u32 (*calc_dest_apicid)(unsigned int cpu);
/* ICR related functions */
u64 (*icr_read)(void);
void (*icr_write)(u32 low, u32 high);
/* The limit of the APIC ID space. */
u32 max_apic_id;
/* Probe, setup and smpboot functions */
int (*probe)(void);
int (*acpi_madt_oem_check)(char *oem_id, char *oem_table_id);
void (*init_apic_ldr)(void);
u32 (*cpu_present_to_apicid)(int mps_cpu);
u32 (*get_apic_id)(u32 id);
/* wakeup_secondary_cpu */
int (*wakeup_secondary_cpu)(u32 apicid, unsigned long start_eip);
/* wakeup secondary CPU using 64-bit wakeup point */
int (*wakeup_secondary_cpu_64)(u32 apicid, unsigned long start_eip);
char *name;
};
struct apic_override {
void (*eoi)(void);
void (*native_eoi)(void);
void (*write)(u32 reg, u32 v);
u32 (*read)(u32 reg);
void (*send_IPI)(int cpu, int vector);
void (*send_IPI_mask)(const struct cpumask *mask, int vector);
void (*send_IPI_mask_allbutself)(const struct cpumask *msk, int vec);
void (*send_IPI_allbutself)(int vector);
void (*send_IPI_all)(int vector);
void (*send_IPI_self)(int vector);
u64 (*icr_read)(void);
void (*icr_write)(u32 low, u32 high);
int (*wakeup_secondary_cpu)(u32 apicid, unsigned long start_eip);
int (*wakeup_secondary_cpu_64)(u32 apicid, unsigned long start_eip);
};
/*
* Pointer to the local APIC driver in use on this system (there's
* always just one such driver in use - the kernel decides via an
* early probing process which one it picks - and then sticks to it):
*/
extern struct apic *apic;
/*
* APIC drivers are probed based on how they are listed in the .apicdrivers
* section. So the order is important and enforced by the ordering
* of different apic driver files in the Makefile.
*
* For the files having two apic drivers, we use apic_drivers()
* to enforce the order with in them.
*/
#define apic_driver(sym) \
static const struct apic *__apicdrivers_##sym __used \
__aligned(sizeof(struct apic *)) \
__section(".apicdrivers") = { &sym }
#define apic_drivers(sym1, sym2) \
static struct apic *__apicdrivers_##sym1##sym2[2] __used \
__aligned(sizeof(struct apic *)) \
__section(".apicdrivers") = { &sym1, &sym2 }
extern struct apic *__apicdrivers[], *__apicdrivers_end[];
/*
* APIC functionality to boot other CPUs - only used on SMP:
*/
#ifdef CONFIG_SMP
extern int lapic_can_unplug_cpu(void);
#endif
#ifdef CONFIG_X86_LOCAL_APIC
extern struct apic_override __x86_apic_override;
void __init apic_setup_apic_calls(void);
void __init apic_install_driver(struct apic *driver);
#define apic_update_callback(_callback, _fn) { \
__x86_apic_override._callback = _fn; \
apic->_callback = _fn; \
static_call_update(apic_call_##_callback, _fn); \
pr_info("APIC: %s() replaced with %ps()\n", #_callback, _fn); \
}
#define DECLARE_APIC_CALL(__cb) \
DECLARE_STATIC_CALL(apic_call_##__cb, *apic->__cb)
DECLARE_APIC_CALL(eoi);
DECLARE_APIC_CALL(native_eoi);
DECLARE_APIC_CALL(icr_read);
DECLARE_APIC_CALL(icr_write);
DECLARE_APIC_CALL(read);
DECLARE_APIC_CALL(send_IPI);
DECLARE_APIC_CALL(send_IPI_mask);
DECLARE_APIC_CALL(send_IPI_mask_allbutself);
DECLARE_APIC_CALL(send_IPI_allbutself);
DECLARE_APIC_CALL(send_IPI_all);
DECLARE_APIC_CALL(send_IPI_self);
DECLARE_APIC_CALL(wait_icr_idle);
DECLARE_APIC_CALL(wakeup_secondary_cpu);
DECLARE_APIC_CALL(wakeup_secondary_cpu_64);
DECLARE_APIC_CALL(write);
static __always_inline u32 apic_read(u32 reg)
{
return static_call(apic_call_read)(reg);
}
static __always_inline void apic_write(u32 reg, u32 val)
{
static_call(apic_call_write)(reg, val);
}
static __always_inline void apic_eoi(void)
{
static_call(apic_call_eoi)();
}
static __always_inline void apic_native_eoi(void)
{
static_call(apic_call_native_eoi)();
}
static __always_inline u64 apic_icr_read(void)
{
return static_call(apic_call_icr_read)();
}
static __always_inline void apic_icr_write(u32 low, u32 high)
{
static_call(apic_call_icr_write)(low, high);
}
static __always_inline void __apic_send_IPI(int cpu, int vector)
{
static_call(apic_call_send_IPI)(cpu, vector);
}
static __always_inline void __apic_send_IPI_mask(const struct cpumask *mask, int vector)
{
static_call_mod(apic_call_send_IPI_mask)(mask, vector);
}
static __always_inline void __apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
{
static_call(apic_call_send_IPI_mask_allbutself)(mask, vector);
}
static __always_inline void __apic_send_IPI_allbutself(int vector)
{
static_call(apic_call_send_IPI_allbutself)(vector);
}
static __always_inline void __apic_send_IPI_all(int vector)
{
static_call(apic_call_send_IPI_all)(vector);
}
static __always_inline void __apic_send_IPI_self(int vector)
{
static_call_mod(apic_call_send_IPI_self)(vector);
}
static __always_inline void apic_wait_icr_idle(void)
{
static_call_cond(apic_call_wait_icr_idle)();
}
static __always_inline u32 safe_apic_wait_icr_idle(void)
{
return apic->safe_wait_icr_idle ? apic->safe_wait_icr_idle() : 0;
}
static __always_inline bool apic_id_valid(u32 apic_id)
{
return apic_id <= apic->max_apic_id;
}
#else /* CONFIG_X86_LOCAL_APIC */
static inline u32 apic_read(u32 reg) { return 0; }
static inline void apic_write(u32 reg, u32 val) { }
static inline void apic_eoi(void) { }
static inline u64 apic_icr_read(void) { return 0; }
static inline void apic_icr_write(u32 low, u32 high) { }
static inline void apic_wait_icr_idle(void) { }
static inline u32 safe_apic_wait_icr_idle(void) { return 0; }
static inline void apic_set_eoi_cb(void (*eoi)(void)) {}
static inline void apic_native_eoi(void) { WARN_ON_ONCE(1); }
static inline void apic_setup_apic_calls(void) { }
#define apic_update_callback(_callback, _fn) do { } while (0)
#endif /* CONFIG_X86_LOCAL_APIC */
extern void apic_ack_irq(struct irq_data *data);
static inline bool lapic_vector_set_in_irr(unsigned int vector)
{
u32 irr = apic_read(APIC_IRR + (vector / 32 * 0x10));
return !!(irr & (1U << (vector % 32)));
}
static inline bool is_vector_pending(unsigned int vector)
{
return lapic_vector_set_in_irr(vector) || pi_pending_this_cpu(vector);
}
/*
* Warm reset vector position:
*/
#define TRAMPOLINE_PHYS_LOW 0x467
#define TRAMPOLINE_PHYS_HIGH 0x469
extern void generic_bigsmp_probe(void);
#ifdef CONFIG_X86_LOCAL_APIC
#include <asm/smp.h>
extern struct apic apic_noop;
static inline u32 read_apic_id(void)
{
u32 reg = apic_read(APIC_ID);
return apic->get_apic_id(reg);
}
#ifdef CONFIG_X86_64
typedef int (*wakeup_cpu_handler)(int apicid, unsigned long start_eip);
extern int default_acpi_madt_oem_check(char *, char *);
extern void x86_64_probe_apic(void);
#else
static inline int default_acpi_madt_oem_check(char *a, char *b) { return 0; }
static inline void x86_64_probe_apic(void) { }
#endif
extern int default_apic_id_valid(u32 apicid);
extern u32 apic_default_calc_apicid(unsigned int cpu);
extern u32 apic_flat_calc_apicid(unsigned int cpu);
extern u32 default_cpu_present_to_apicid(int mps_cpu);
void apic_send_nmi_to_offline_cpu(unsigned int cpu);
#else /* CONFIG_X86_LOCAL_APIC */
static inline u32 read_apic_id(void) { return 0; }
#endif /* !CONFIG_X86_LOCAL_APIC */
#ifdef CONFIG_SMP
void apic_smt_update(void);
#else
static inline void apic_smt_update(void) { }
#endif
struct msi_msg;
struct irq_cfg;
extern void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg,
bool dmar);
extern void ioapic_zap_locks(void);
#endif /* _ASM_X86_APIC_H */