11965aae3SH. Peter Anvin #ifndef _ASM_X86_APIC_H 21965aae3SH. Peter Anvin #define _ASM_X86_APIC_H 3bb898558SAl Viro 4e2780a68SIngo Molnar #include <linux/cpumask.h> 5e2780a68SIngo Molnar #include <linux/pm.h> 6bb898558SAl Viro 7bb898558SAl Viro #include <asm/alternative.h> 8bb898558SAl Viro #include <asm/cpufeature.h> 9e2780a68SIngo Molnar #include <asm/apicdef.h> 1060063497SArun Sharma #include <linux/atomic.h> 11e2780a68SIngo Molnar #include <asm/fixmap.h> 12e2780a68SIngo Molnar #include <asm/mpspec.h> 13bb898558SAl Viro #include <asm/msr.h> 14eddc0e92SSeiji Aguchi #include <asm/idle.h> 15bb898558SAl Viro 16bb898558SAl Viro #define ARCH_APICTIMER_STOPS_ON_C3 1 17bb898558SAl Viro 18bb898558SAl Viro /* 19bb898558SAl Viro * Debugging macros 20bb898558SAl Viro */ 21bb898558SAl Viro #define APIC_QUIET 0 22bb898558SAl Viro #define APIC_VERBOSE 1 23bb898558SAl Viro #define APIC_DEBUG 2 24bb898558SAl Viro 25b7c4948eSHidehiro Kawai /* Macros for apic_extnmi which controls external NMI masking */ 26b7c4948eSHidehiro Kawai #define APIC_EXTNMI_BSP 0 /* Default */ 27b7c4948eSHidehiro Kawai #define APIC_EXTNMI_ALL 1 28b7c4948eSHidehiro Kawai #define APIC_EXTNMI_NONE 2 29b7c4948eSHidehiro Kawai 30bb898558SAl Viro /* 31bb898558SAl Viro * Define the default level of output to be very little 32bb898558SAl Viro * This can be turned up by using apic=verbose for more 33bb898558SAl Viro * information and apic=debug for _lots_ of information. 34bb898558SAl Viro * apic_verbosity is defined in apic.c 35bb898558SAl Viro */ 36bb898558SAl Viro #define apic_printk(v, s, a...) do { \ 37bb898558SAl Viro if ((v) <= apic_verbosity) \ 38bb898558SAl Viro printk(s, ##a); \ 39bb898558SAl Viro } while (0) 40bb898558SAl Viro 41bb898558SAl Viro 42160d8dacSIngo Molnar #if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32) 43bb898558SAl Viro extern void generic_apic_probe(void); 44160d8dacSIngo Molnar #else 45160d8dacSIngo Molnar static inline void generic_apic_probe(void) 46160d8dacSIngo Molnar { 47160d8dacSIngo Molnar } 48160d8dacSIngo Molnar #endif 49bb898558SAl Viro 50bb898558SAl Viro #ifdef CONFIG_X86_LOCAL_APIC 51bb898558SAl Viro 52bb898558SAl Viro extern unsigned int apic_verbosity; 53bb898558SAl Viro extern int local_apic_timer_c2_ok; 54bb898558SAl Viro 55bb898558SAl Viro extern int disable_apic; 561ade93efSJacob Pan extern unsigned int lapic_timer_frequency; 570939e4fdSIngo Molnar 580939e4fdSIngo Molnar #ifdef CONFIG_SMP 590939e4fdSIngo Molnar extern void __inquire_remote_apic(int apicid); 600939e4fdSIngo Molnar #else /* CONFIG_SMP */ 610939e4fdSIngo Molnar static inline void __inquire_remote_apic(int apicid) 620939e4fdSIngo Molnar { 630939e4fdSIngo Molnar } 640939e4fdSIngo Molnar #endif /* CONFIG_SMP */ 650939e4fdSIngo Molnar 660939e4fdSIngo Molnar static inline void default_inquire_remote_apic(int apicid) 670939e4fdSIngo Molnar { 680939e4fdSIngo Molnar if (apic_verbosity >= APIC_DEBUG) 690939e4fdSIngo Molnar __inquire_remote_apic(apicid); 700939e4fdSIngo Molnar } 710939e4fdSIngo Molnar 72bb898558SAl Viro /* 738312136fSCyrill Gorcunov * With 82489DX we can't rely on apic feature bit 748312136fSCyrill Gorcunov * retrieved via cpuid but still have to deal with 758312136fSCyrill Gorcunov * such an apic chip so we assume that SMP configuration 768312136fSCyrill Gorcunov * is found from MP table (64bit case uses ACPI mostly 778312136fSCyrill Gorcunov * which set smp presence flag as well so we are safe 788312136fSCyrill Gorcunov * to use this helper too). 798312136fSCyrill Gorcunov */ 808312136fSCyrill Gorcunov static inline bool apic_from_smp_config(void) 818312136fSCyrill Gorcunov { 828312136fSCyrill Gorcunov return smp_found_config && !disable_apic; 838312136fSCyrill Gorcunov } 848312136fSCyrill Gorcunov 858312136fSCyrill Gorcunov /* 86bb898558SAl Viro * Basic functions accessing APICs. 87bb898558SAl Viro */ 88bb898558SAl Viro #ifdef CONFIG_PARAVIRT 89bb898558SAl Viro #include <asm/paravirt.h> 90bb898558SAl Viro #endif 91bb898558SAl Viro 92bb898558SAl Viro extern int setup_profiling_timer(unsigned int); 93bb898558SAl Viro 94bb898558SAl Viro static inline void native_apic_mem_write(u32 reg, u32 v) 95bb898558SAl Viro { 96bb898558SAl Viro volatile u32 *addr = (volatile u32 *)(APIC_BASE + reg); 97bb898558SAl Viro 98a930dc45SBorislav Petkov alternative_io("movl %0, %P1", "xchgl %0, %P1", X86_BUG_11AP, 99bb898558SAl Viro ASM_OUTPUT2("=r" (v), "=m" (*addr)), 100bb898558SAl Viro ASM_OUTPUT2("0" (v), "m" (*addr))); 101bb898558SAl Viro } 102bb898558SAl Viro 103bb898558SAl Viro static inline u32 native_apic_mem_read(u32 reg) 104bb898558SAl Viro { 105bb898558SAl Viro return *((volatile u32 *)(APIC_BASE + reg)); 106bb898558SAl Viro } 107bb898558SAl Viro 108c1eeb2deSYinghai Lu extern void native_apic_wait_icr_idle(void); 109c1eeb2deSYinghai Lu extern u32 native_safe_apic_wait_icr_idle(void); 110c1eeb2deSYinghai Lu extern void native_apic_icr_write(u32 low, u32 id); 111c1eeb2deSYinghai Lu extern u64 native_apic_icr_read(void); 112c1eeb2deSYinghai Lu 1138d806960SThomas Gleixner static inline bool apic_is_x2apic_enabled(void) 1148d806960SThomas Gleixner { 1158d806960SThomas Gleixner u64 msr; 1168d806960SThomas Gleixner 1178d806960SThomas Gleixner if (rdmsrl_safe(MSR_IA32_APICBASE, &msr)) 1188d806960SThomas Gleixner return false; 1198d806960SThomas Gleixner return msr & X2APIC_ENABLE; 1208d806960SThomas Gleixner } 1218d806960SThomas Gleixner 122e02ae387SPaolo Bonzini extern void enable_IR_x2apic(void); 123e02ae387SPaolo Bonzini 124e02ae387SPaolo Bonzini extern int get_physical_broadcast(void); 125e02ae387SPaolo Bonzini 126e02ae387SPaolo Bonzini extern int lapic_get_maxlvt(void); 127e02ae387SPaolo Bonzini extern void clear_local_APIC(void); 128e02ae387SPaolo Bonzini extern void disconnect_bsp_APIC(int virt_wire_setup); 129e02ae387SPaolo Bonzini extern void disable_local_APIC(void); 130e02ae387SPaolo Bonzini extern void lapic_shutdown(void); 131e02ae387SPaolo Bonzini extern void sync_Arb_IDs(void); 132e02ae387SPaolo Bonzini extern void init_bsp_APIC(void); 133e02ae387SPaolo Bonzini extern void setup_local_APIC(void); 134e02ae387SPaolo Bonzini extern void init_apic_mappings(void); 135e02ae387SPaolo Bonzini void register_lapic_address(unsigned long address); 136e02ae387SPaolo Bonzini extern void setup_boot_APIC_clock(void); 137e02ae387SPaolo Bonzini extern void setup_secondary_APIC_clock(void); 1386731b0d6SNicolai Stange extern void lapic_update_tsc_freq(void); 139e02ae387SPaolo Bonzini extern int APIC_init_uniprocessor(void); 140e02ae387SPaolo Bonzini 141e02ae387SPaolo Bonzini #ifdef CONFIG_X86_64 142e02ae387SPaolo Bonzini static inline int apic_force_enable(unsigned long addr) 143e02ae387SPaolo Bonzini { 144e02ae387SPaolo Bonzini return -1; 145e02ae387SPaolo Bonzini } 146e02ae387SPaolo Bonzini #else 147e02ae387SPaolo Bonzini extern int apic_force_enable(unsigned long addr); 148e02ae387SPaolo Bonzini #endif 149e02ae387SPaolo Bonzini 150e02ae387SPaolo Bonzini extern int apic_bsp_setup(bool upmode); 151e02ae387SPaolo Bonzini extern void apic_ap_setup(void); 152e02ae387SPaolo Bonzini 153e02ae387SPaolo Bonzini /* 154e02ae387SPaolo Bonzini * On 32bit this is mach-xxx local 155e02ae387SPaolo Bonzini */ 156e02ae387SPaolo Bonzini #ifdef CONFIG_X86_64 157e02ae387SPaolo Bonzini extern int apic_is_clustered_box(void); 158e02ae387SPaolo Bonzini #else 159e02ae387SPaolo Bonzini static inline int apic_is_clustered_box(void) 160e02ae387SPaolo Bonzini { 161e02ae387SPaolo Bonzini return 0; 162e02ae387SPaolo Bonzini } 163e02ae387SPaolo Bonzini #endif 164e02ae387SPaolo Bonzini 165e02ae387SPaolo Bonzini extern int setup_APIC_eilvt(u8 lvt_off, u8 vector, u8 msg_type, u8 mask); 166e02ae387SPaolo Bonzini 167e02ae387SPaolo Bonzini #else /* !CONFIG_X86_LOCAL_APIC */ 168e02ae387SPaolo Bonzini static inline void lapic_shutdown(void) { } 169e02ae387SPaolo Bonzini #define local_apic_timer_c2_ok 1 170e02ae387SPaolo Bonzini static inline void init_apic_mappings(void) { } 171e02ae387SPaolo Bonzini static inline void disable_local_APIC(void) { } 172e02ae387SPaolo Bonzini # define setup_boot_APIC_clock x86_init_noop 173e02ae387SPaolo Bonzini # define setup_secondary_APIC_clock x86_init_noop 1746731b0d6SNicolai Stange static inline void lapic_update_tsc_freq(void) { } 175e02ae387SPaolo Bonzini #endif /* !CONFIG_X86_LOCAL_APIC */ 176e02ae387SPaolo Bonzini 177d0b03bd1SHan, Weidong #ifdef CONFIG_X86_X2APIC 178ce4e240cSSuresh Siddha /* 179ce4e240cSSuresh Siddha * Make previous memory operations globally visible before 180ce4e240cSSuresh Siddha * sending the IPI through x2apic wrmsr. We need a serializing instruction or 181ce4e240cSSuresh Siddha * mfence for this. 182ce4e240cSSuresh Siddha */ 183ce4e240cSSuresh Siddha static inline void x2apic_wrmsr_fence(void) 184ce4e240cSSuresh Siddha { 185ce4e240cSSuresh Siddha asm volatile("mfence" : : : "memory"); 186ce4e240cSSuresh Siddha } 187ce4e240cSSuresh Siddha 188bb898558SAl Viro static inline void native_apic_msr_write(u32 reg, u32 v) 189bb898558SAl Viro { 190bb898558SAl Viro if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR || 191bb898558SAl Viro reg == APIC_LVR) 192bb898558SAl Viro return; 193bb898558SAl Viro 194bb898558SAl Viro wrmsr(APIC_BASE_MSR + (reg >> 4), v, 0); 195bb898558SAl Viro } 196bb898558SAl Viro 1970ab711aeSMichael S. Tsirkin static inline void native_apic_msr_eoi_write(u32 reg, u32 v) 1980ab711aeSMichael S. Tsirkin { 1990ab711aeSMichael S. Tsirkin wrmsr(APIC_BASE_MSR + (APIC_EOI >> 4), APIC_EOI_ACK, 0); 2000ab711aeSMichael S. Tsirkin } 2010ab711aeSMichael S. Tsirkin 202bb898558SAl Viro static inline u32 native_apic_msr_read(u32 reg) 203bb898558SAl Viro { 2040059b243SAndi Kleen u64 msr; 205bb898558SAl Viro 206bb898558SAl Viro if (reg == APIC_DFR) 207bb898558SAl Viro return -1; 208bb898558SAl Viro 2090059b243SAndi Kleen rdmsrl(APIC_BASE_MSR + (reg >> 4), msr); 2100059b243SAndi Kleen return (u32)msr; 211bb898558SAl Viro } 212bb898558SAl Viro 213c1eeb2deSYinghai Lu static inline void native_x2apic_wait_icr_idle(void) 214c1eeb2deSYinghai Lu { 215c1eeb2deSYinghai Lu /* no need to wait for icr idle in x2apic */ 216c1eeb2deSYinghai Lu return; 217c1eeb2deSYinghai Lu } 218c1eeb2deSYinghai Lu 219c1eeb2deSYinghai Lu static inline u32 native_safe_x2apic_wait_icr_idle(void) 220c1eeb2deSYinghai Lu { 221c1eeb2deSYinghai Lu /* no need to wait for icr idle in x2apic */ 222c1eeb2deSYinghai Lu return 0; 223c1eeb2deSYinghai Lu } 224c1eeb2deSYinghai Lu 225c1eeb2deSYinghai Lu static inline void native_x2apic_icr_write(u32 low, u32 id) 226c1eeb2deSYinghai Lu { 227c1eeb2deSYinghai Lu wrmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), ((__u64) id) << 32 | low); 228c1eeb2deSYinghai Lu } 229c1eeb2deSYinghai Lu 230c1eeb2deSYinghai Lu static inline u64 native_x2apic_icr_read(void) 231c1eeb2deSYinghai Lu { 232c1eeb2deSYinghai Lu unsigned long val; 233c1eeb2deSYinghai Lu 234c1eeb2deSYinghai Lu rdmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), val); 235c1eeb2deSYinghai Lu return val; 236c1eeb2deSYinghai Lu } 237c1eeb2deSYinghai Lu 23881a46dd8SThomas Gleixner extern int x2apic_mode; 239fc1edaf9SSuresh Siddha extern int x2apic_phys; 240d524165cSThomas Gleixner extern void __init check_x2apic(void); 241659006bfSThomas Gleixner extern void x2apic_setup(void); 242bb898558SAl Viro static inline int x2apic_enabled(void) 243bb898558SAl Viro { 24462436a4dSBorislav Petkov return boot_cpu_has(X86_FEATURE_X2APIC) && apic_is_x2apic_enabled(); 245bb898558SAl Viro } 246fc1edaf9SSuresh Siddha 24762436a4dSBorislav Petkov #define x2apic_supported() (boot_cpu_has(X86_FEATURE_X2APIC)) 248e02ae387SPaolo Bonzini #else /* !CONFIG_X86_X2APIC */ 24955eae7deSThomas Gleixner static inline void check_x2apic(void) { } 250659006bfSThomas Gleixner static inline void x2apic_setup(void) { } 25155eae7deSThomas Gleixner static inline int x2apic_enabled(void) { return 0; } 252cf6567feSSuresh Siddha 25381a46dd8SThomas Gleixner #define x2apic_mode (0) 25481a46dd8SThomas Gleixner #define x2apic_supported() (0) 255e02ae387SPaolo Bonzini #endif /* !CONFIG_X86_X2APIC */ 256bb898558SAl Viro 2571f75ed0cSIngo Molnar #ifdef CONFIG_X86_64 2581f75ed0cSIngo Molnar #define SET_APIC_ID(x) (apic->set_apic_id(x)) 2591f75ed0cSIngo Molnar #else 2601f75ed0cSIngo Molnar 2611f75ed0cSIngo Molnar #endif 2621f75ed0cSIngo Molnar 263e2780a68SIngo Molnar /* 264e2780a68SIngo Molnar * Copyright 2004 James Cleverdon, IBM. 265e2780a68SIngo Molnar * Subject to the GNU Public License, v.2 266e2780a68SIngo Molnar * 267e2780a68SIngo Molnar * Generic APIC sub-arch data struct. 268e2780a68SIngo Molnar * 269e2780a68SIngo Molnar * Hacked for x86-64 by James Cleverdon from i386 architecture code by 270e2780a68SIngo Molnar * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and 271e2780a68SIngo Molnar * James Cleverdon. 272e2780a68SIngo Molnar */ 273be163a15SIngo Molnar struct apic { 274e2780a68SIngo Molnar char *name; 275e2780a68SIngo Molnar 276e2780a68SIngo Molnar int (*probe)(void); 277e2780a68SIngo Molnar int (*acpi_madt_oem_check)(char *oem_id, char *oem_table_id); 278fa63030eSDaniel J Blueman int (*apic_id_valid)(int apicid); 279e2780a68SIngo Molnar int (*apic_id_registered)(void); 280e2780a68SIngo Molnar 281e2780a68SIngo Molnar u32 irq_delivery_mode; 282e2780a68SIngo Molnar u32 irq_dest_mode; 283e2780a68SIngo Molnar 284e2780a68SIngo Molnar const struct cpumask *(*target_cpus)(void); 285e2780a68SIngo Molnar 286e2780a68SIngo Molnar int disable_esr; 287e2780a68SIngo Molnar 288e2780a68SIngo Molnar int dest_logical; 2897abc0753SCyrill Gorcunov unsigned long (*check_apicid_used)(physid_mask_t *map, int apicid); 290e2780a68SIngo Molnar 2911ac322d0SSuresh Siddha void (*vector_allocation_domain)(int cpu, struct cpumask *retmask, 2921ac322d0SSuresh Siddha const struct cpumask *mask); 293e2780a68SIngo Molnar void (*init_apic_ldr)(void); 294e2780a68SIngo Molnar 2957abc0753SCyrill Gorcunov void (*ioapic_phys_id_map)(physid_mask_t *phys_map, physid_mask_t *retmap); 296e2780a68SIngo Molnar 297e2780a68SIngo Molnar void (*setup_apic_routing)(void); 298e2780a68SIngo Molnar int (*cpu_present_to_apicid)(int mps_cpu); 2997abc0753SCyrill Gorcunov void (*apicid_to_cpu_present)(int phys_apicid, physid_mask_t *retmap); 300e11dadabSThomas Gleixner int (*check_phys_apicid_present)(int phys_apicid); 301e2780a68SIngo Molnar int (*phys_pkg_id)(int cpuid_apic, int index_msb); 302e2780a68SIngo Molnar 303e2780a68SIngo Molnar unsigned int (*get_apic_id)(unsigned long x); 304e2780a68SIngo Molnar unsigned long (*set_apic_id)(unsigned int id); 305e2780a68SIngo Molnar 306ff164324SAlexander Gordeev int (*cpu_mask_to_apicid_and)(const struct cpumask *cpumask, 307ff164324SAlexander Gordeev const struct cpumask *andmask, 308ff164324SAlexander Gordeev unsigned int *apicid); 309e2780a68SIngo Molnar 310e2780a68SIngo Molnar /* ipi */ 311539da787SLinus Torvalds void (*send_IPI)(int cpu, int vector); 312e2780a68SIngo Molnar void (*send_IPI_mask)(const struct cpumask *mask, int vector); 313e2780a68SIngo Molnar void (*send_IPI_mask_allbutself)(const struct cpumask *mask, 314e2780a68SIngo Molnar int vector); 315e2780a68SIngo Molnar void (*send_IPI_allbutself)(int vector); 316e2780a68SIngo Molnar void (*send_IPI_all)(int vector); 317e2780a68SIngo Molnar void (*send_IPI_self)(int vector); 318e2780a68SIngo Molnar 319e2780a68SIngo Molnar /* wakeup_secondary_cpu */ 3201f5bcabfSIngo Molnar int (*wakeup_secondary_cpu)(int apicid, unsigned long start_eip); 321e2780a68SIngo Molnar 322e2780a68SIngo Molnar void (*inquire_remote_apic)(int apicid); 323e2780a68SIngo Molnar 324e2780a68SIngo Molnar /* apic ops */ 325e2780a68SIngo Molnar u32 (*read)(u32 reg); 326e2780a68SIngo Molnar void (*write)(u32 reg, u32 v); 3272a43195dSMichael S. Tsirkin /* 3282a43195dSMichael S. Tsirkin * ->eoi_write() has the same signature as ->write(). 3292a43195dSMichael S. Tsirkin * 3302a43195dSMichael S. Tsirkin * Drivers can support both ->eoi_write() and ->write() by passing the same 3312a43195dSMichael S. Tsirkin * callback value. Kernel can override ->eoi_write() and fall back 3322a43195dSMichael S. Tsirkin * on write for EOI. 3332a43195dSMichael S. Tsirkin */ 3342a43195dSMichael S. Tsirkin void (*eoi_write)(u32 reg, u32 v); 335e2780a68SIngo Molnar u64 (*icr_read)(void); 336e2780a68SIngo Molnar void (*icr_write)(u32 low, u32 high); 337e2780a68SIngo Molnar void (*wait_icr_idle)(void); 338e2780a68SIngo Molnar u32 (*safe_wait_icr_idle)(void); 339acb8bc09STejun Heo 340acb8bc09STejun Heo #ifdef CONFIG_X86_32 341acb8bc09STejun Heo /* 342acb8bc09STejun Heo * Called very early during boot from get_smp_config(). It should 343acb8bc09STejun Heo * return the logical apicid. x86_[bios]_cpu_to_apicid is 344acb8bc09STejun Heo * initialized before this function is called. 345acb8bc09STejun Heo * 346acb8bc09STejun Heo * If logical apicid can't be determined that early, the function 347acb8bc09STejun Heo * may return BAD_APICID. Logical apicid will be configured after 348acb8bc09STejun Heo * init_apic_ldr() while bringing up CPUs. Note that NUMA affinity 349acb8bc09STejun Heo * won't be applied properly during early boot in this case. 350acb8bc09STejun Heo */ 351acb8bc09STejun Heo int (*x86_32_early_logical_apicid)(int cpu); 352acb8bc09STejun Heo #endif 353e2780a68SIngo Molnar }; 354e2780a68SIngo Molnar 3550917c01fSIngo Molnar /* 3560917c01fSIngo Molnar * Pointer to the local APIC driver in use on this system (there's 3570917c01fSIngo Molnar * always just one such driver in use - the kernel decides via an 3580917c01fSIngo Molnar * early probing process which one it picks - and then sticks to it): 3590917c01fSIngo Molnar */ 360be163a15SIngo Molnar extern struct apic *apic; 3610917c01fSIngo Molnar 3620917c01fSIngo Molnar /* 363107e0e0cSSuresh Siddha * APIC drivers are probed based on how they are listed in the .apicdrivers 364107e0e0cSSuresh Siddha * section. So the order is important and enforced by the ordering 365107e0e0cSSuresh Siddha * of different apic driver files in the Makefile. 366107e0e0cSSuresh Siddha * 367107e0e0cSSuresh Siddha * For the files having two apic drivers, we use apic_drivers() 368107e0e0cSSuresh Siddha * to enforce the order with in them. 369107e0e0cSSuresh Siddha */ 370107e0e0cSSuresh Siddha #define apic_driver(sym) \ 37175fdd155SAndi Kleen static const struct apic *__apicdrivers_##sym __used \ 372107e0e0cSSuresh Siddha __aligned(sizeof(struct apic *)) \ 373107e0e0cSSuresh Siddha __section(.apicdrivers) = { &sym } 374107e0e0cSSuresh Siddha 375107e0e0cSSuresh Siddha #define apic_drivers(sym1, sym2) \ 376107e0e0cSSuresh Siddha static struct apic *__apicdrivers_##sym1##sym2[2] __used \ 377107e0e0cSSuresh Siddha __aligned(sizeof(struct apic *)) \ 378107e0e0cSSuresh Siddha __section(.apicdrivers) = { &sym1, &sym2 } 379107e0e0cSSuresh Siddha 380107e0e0cSSuresh Siddha extern struct apic *__apicdrivers[], *__apicdrivers_end[]; 381107e0e0cSSuresh Siddha 382107e0e0cSSuresh Siddha /* 3830917c01fSIngo Molnar * APIC functionality to boot other CPUs - only used on SMP: 3840917c01fSIngo Molnar */ 3850917c01fSIngo Molnar #ifdef CONFIG_SMP 3862b6163bfSYinghai Lu extern int wakeup_secondary_cpu_via_nmi(int apicid, unsigned long start_eip); 3870917c01fSIngo Molnar #endif 388e2780a68SIngo Molnar 389d674cd19SCyrill Gorcunov #ifdef CONFIG_X86_LOCAL_APIC 390346b46beSFernando Luis Vázquez Cao 391e2780a68SIngo Molnar static inline u32 apic_read(u32 reg) 392e2780a68SIngo Molnar { 393e2780a68SIngo Molnar return apic->read(reg); 394e2780a68SIngo Molnar } 395e2780a68SIngo Molnar 396e2780a68SIngo Molnar static inline void apic_write(u32 reg, u32 val) 397e2780a68SIngo Molnar { 398e2780a68SIngo Molnar apic->write(reg, val); 399e2780a68SIngo Molnar } 400e2780a68SIngo Molnar 4012a43195dSMichael S. Tsirkin static inline void apic_eoi(void) 4022a43195dSMichael S. Tsirkin { 4032a43195dSMichael S. Tsirkin apic->eoi_write(APIC_EOI, APIC_EOI_ACK); 4042a43195dSMichael S. Tsirkin } 4052a43195dSMichael S. Tsirkin 406e2780a68SIngo Molnar static inline u64 apic_icr_read(void) 407e2780a68SIngo Molnar { 408e2780a68SIngo Molnar return apic->icr_read(); 409e2780a68SIngo Molnar } 410e2780a68SIngo Molnar 411e2780a68SIngo Molnar static inline void apic_icr_write(u32 low, u32 high) 412e2780a68SIngo Molnar { 413e2780a68SIngo Molnar apic->icr_write(low, high); 414e2780a68SIngo Molnar } 415e2780a68SIngo Molnar 416e2780a68SIngo Molnar static inline void apic_wait_icr_idle(void) 417e2780a68SIngo Molnar { 418e2780a68SIngo Molnar apic->wait_icr_idle(); 419e2780a68SIngo Molnar } 420e2780a68SIngo Molnar 421e2780a68SIngo Molnar static inline u32 safe_apic_wait_icr_idle(void) 422e2780a68SIngo Molnar { 423e2780a68SIngo Molnar return apic->safe_wait_icr_idle(); 424e2780a68SIngo Molnar } 425e2780a68SIngo Molnar 4261551df64SMichael S. Tsirkin extern void __init apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v)); 4271551df64SMichael S. Tsirkin 428d674cd19SCyrill Gorcunov #else /* CONFIG_X86_LOCAL_APIC */ 429d674cd19SCyrill Gorcunov 430d674cd19SCyrill Gorcunov static inline u32 apic_read(u32 reg) { return 0; } 431d674cd19SCyrill Gorcunov static inline void apic_write(u32 reg, u32 val) { } 4322a43195dSMichael S. Tsirkin static inline void apic_eoi(void) { } 433d674cd19SCyrill Gorcunov static inline u64 apic_icr_read(void) { return 0; } 434d674cd19SCyrill Gorcunov static inline void apic_icr_write(u32 low, u32 high) { } 435d674cd19SCyrill Gorcunov static inline void apic_wait_icr_idle(void) { } 436d674cd19SCyrill Gorcunov static inline u32 safe_apic_wait_icr_idle(void) { return 0; } 4371551df64SMichael S. Tsirkin static inline void apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v)) {} 438d674cd19SCyrill Gorcunov 439d674cd19SCyrill Gorcunov #endif /* CONFIG_X86_LOCAL_APIC */ 440e2780a68SIngo Molnar 441e2780a68SIngo Molnar static inline void ack_APIC_irq(void) 442e2780a68SIngo Molnar { 443e2780a68SIngo Molnar /* 444e2780a68SIngo Molnar * ack_APIC_irq() actually gets compiled as a single instruction 445e2780a68SIngo Molnar * ... yummie. 446e2780a68SIngo Molnar */ 4472a43195dSMichael S. Tsirkin apic_eoi(); 448e2780a68SIngo Molnar } 449e2780a68SIngo Molnar 450e2780a68SIngo Molnar static inline unsigned default_get_apic_id(unsigned long x) 451e2780a68SIngo Molnar { 452e2780a68SIngo Molnar unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR)); 453e2780a68SIngo Molnar 45442937e81SAndreas Herrmann if (APIC_XAPIC(ver) || boot_cpu_has(X86_FEATURE_EXTD_APICID)) 455e2780a68SIngo Molnar return (x >> 24) & 0xFF; 456e2780a68SIngo Molnar else 457e2780a68SIngo Molnar return (x >> 24) & 0x0F; 458e2780a68SIngo Molnar } 459e2780a68SIngo Molnar 460e2780a68SIngo Molnar /* 4616ab1b27cSDavid Rientjes * Warm reset vector position: 462e2780a68SIngo Molnar */ 4636ab1b27cSDavid Rientjes #define TRAMPOLINE_PHYS_LOW 0x467 4646ab1b27cSDavid Rientjes #define TRAMPOLINE_PHYS_HIGH 0x469 465e2780a68SIngo Molnar 4662b6163bfSYinghai Lu #ifdef CONFIG_X86_64 467e2780a68SIngo Molnar extern void apic_send_IPI_self(int vector); 468e2780a68SIngo Molnar 469e2780a68SIngo Molnar DECLARE_PER_CPU(int, x2apic_extra_bits); 470e2780a68SIngo Molnar 471e2780a68SIngo Molnar extern int default_cpu_present_to_apicid(int mps_cpu); 472e11dadabSThomas Gleixner extern int default_check_phys_apicid_present(int phys_apicid); 473e2780a68SIngo Molnar #endif 474e2780a68SIngo Molnar 475838312beSJan Beulich extern void generic_bigsmp_probe(void); 476e2780a68SIngo Molnar 477e2780a68SIngo Molnar 478e2780a68SIngo Molnar #ifdef CONFIG_X86_LOCAL_APIC 479e2780a68SIngo Molnar 480e2780a68SIngo Molnar #include <asm/smp.h> 481e2780a68SIngo Molnar 482e2780a68SIngo Molnar #define APIC_DFR_VALUE (APIC_DFR_FLAT) 483e2780a68SIngo Molnar 484e2780a68SIngo Molnar static inline const struct cpumask *default_target_cpus(void) 485e2780a68SIngo Molnar { 486e2780a68SIngo Molnar #ifdef CONFIG_SMP 487e2780a68SIngo Molnar return cpu_online_mask; 488e2780a68SIngo Molnar #else 489e2780a68SIngo Molnar return cpumask_of(0); 490e2780a68SIngo Molnar #endif 491e2780a68SIngo Molnar } 492e2780a68SIngo Molnar 493bf721d3aSAlexander Gordeev static inline const struct cpumask *online_target_cpus(void) 494bf721d3aSAlexander Gordeev { 495bf721d3aSAlexander Gordeev return cpu_online_mask; 496bf721d3aSAlexander Gordeev } 497bf721d3aSAlexander Gordeev 4980816b0f0SVlad Zolotarov DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_bios_cpu_apicid); 499e2780a68SIngo Molnar 500e2780a68SIngo Molnar 501e2780a68SIngo Molnar static inline unsigned int read_apic_id(void) 502e2780a68SIngo Molnar { 503e2780a68SIngo Molnar unsigned int reg; 504e2780a68SIngo Molnar 505e2780a68SIngo Molnar reg = apic_read(APIC_ID); 506e2780a68SIngo Molnar 507e2780a68SIngo Molnar return apic->get_apic_id(reg); 508e2780a68SIngo Molnar } 509e2780a68SIngo Molnar 510fa63030eSDaniel J Blueman static inline int default_apic_id_valid(int apicid) 511fa63030eSDaniel J Blueman { 512b7157acfSSteffen Persvold return (apicid < 255); 513fa63030eSDaniel J Blueman } 514fa63030eSDaniel J Blueman 515a491cc90SJiang Liu extern int default_acpi_madt_oem_check(char *, char *); 516a491cc90SJiang Liu 517e2780a68SIngo Molnar extern void default_setup_apic_routing(void); 518e2780a68SIngo Molnar 5199844ab11SCyrill Gorcunov extern struct apic apic_noop; 5209844ab11SCyrill Gorcunov 521e2780a68SIngo Molnar #ifdef CONFIG_X86_32 5222c1b284eSJaswinder Singh Rajput 523acb8bc09STejun Heo static inline int noop_x86_32_early_logical_apicid(int cpu) 524acb8bc09STejun Heo { 525acb8bc09STejun Heo return BAD_APICID; 526acb8bc09STejun Heo } 527acb8bc09STejun Heo 528e2780a68SIngo Molnar /* 529e2780a68SIngo Molnar * Set up the logical destination ID. 530e2780a68SIngo Molnar * 531e2780a68SIngo Molnar * Intel recommends to set DFR, LDR and TPR before enabling 532e2780a68SIngo Molnar * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel 533e2780a68SIngo Molnar * document number 292116). So here it goes... 534e2780a68SIngo Molnar */ 535e2780a68SIngo Molnar extern void default_init_apic_ldr(void); 536e2780a68SIngo Molnar 537e2780a68SIngo Molnar static inline int default_apic_id_registered(void) 538e2780a68SIngo Molnar { 539e2780a68SIngo Molnar return physid_isset(read_apic_id(), phys_cpu_present_map); 540e2780a68SIngo Molnar } 541e2780a68SIngo Molnar 542f56e5034SYinghai Lu static inline int default_phys_pkg_id(int cpuid_apic, int index_msb) 543f56e5034SYinghai Lu { 544f56e5034SYinghai Lu return cpuid_apic >> index_msb; 545f56e5034SYinghai Lu } 546f56e5034SYinghai Lu 547f56e5034SYinghai Lu #endif 548f56e5034SYinghai Lu 549ff164324SAlexander Gordeev static inline int 550a5a39156SAlexander Gordeev flat_cpu_mask_to_apicid_and(const struct cpumask *cpumask, 551a5a39156SAlexander Gordeev const struct cpumask *andmask, 552a5a39156SAlexander Gordeev unsigned int *apicid) 553e2780a68SIngo Molnar { 554a5a39156SAlexander Gordeev unsigned long cpu_mask = cpumask_bits(cpumask)[0] & 555a5a39156SAlexander Gordeev cpumask_bits(andmask)[0] & 556a5a39156SAlexander Gordeev cpumask_bits(cpu_online_mask)[0] & 557a5a39156SAlexander Gordeev APIC_ALL_CPUS; 558a5a39156SAlexander Gordeev 559ff164324SAlexander Gordeev if (likely(cpu_mask)) { 560ff164324SAlexander Gordeev *apicid = (unsigned int)cpu_mask; 561ff164324SAlexander Gordeev return 0; 562ff164324SAlexander Gordeev } else { 563ff164324SAlexander Gordeev return -EINVAL; 564ff164324SAlexander Gordeev } 565e2780a68SIngo Molnar } 566e2780a68SIngo Molnar 567ff164324SAlexander Gordeev extern int 5686398268dSAlexander Gordeev default_cpu_mask_to_apicid_and(const struct cpumask *cpumask, 569ff164324SAlexander Gordeev const struct cpumask *andmask, 570ff164324SAlexander Gordeev unsigned int *apicid); 5716398268dSAlexander Gordeev 572b39f25a8SSuresh Siddha static inline void 5731ac322d0SSuresh Siddha flat_vector_allocation_domain(int cpu, struct cpumask *retmask, 5741ac322d0SSuresh Siddha const struct cpumask *mask) 5759d8e1066SAlexander Gordeev { 5769d8e1066SAlexander Gordeev /* Careful. Some cpus do not strictly honor the set of cpus 5779d8e1066SAlexander Gordeev * specified in the interrupt destination when using lowest 5789d8e1066SAlexander Gordeev * priority interrupt delivery mode. 5799d8e1066SAlexander Gordeev * 5809d8e1066SAlexander Gordeev * In particular there was a hyperthreading cpu observed to 5819d8e1066SAlexander Gordeev * deliver interrupts to the wrong hyperthread when only one 5829d8e1066SAlexander Gordeev * hyperthread was specified in the interrupt desitination. 5839d8e1066SAlexander Gordeev */ 5849d8e1066SAlexander Gordeev cpumask_clear(retmask); 5859d8e1066SAlexander Gordeev cpumask_bits(retmask)[0] = APIC_ALL_CPUS; 5869d8e1066SAlexander Gordeev } 5879d8e1066SAlexander Gordeev 588b39f25a8SSuresh Siddha static inline void 5891ac322d0SSuresh Siddha default_vector_allocation_domain(int cpu, struct cpumask *retmask, 5901ac322d0SSuresh Siddha const struct cpumask *mask) 5919d8e1066SAlexander Gordeev { 5929d8e1066SAlexander Gordeev cpumask_copy(retmask, cpumask_of(cpu)); 5939d8e1066SAlexander Gordeev } 5949d8e1066SAlexander Gordeev 5957abc0753SCyrill Gorcunov static inline unsigned long default_check_apicid_used(physid_mask_t *map, int apicid) 596e2780a68SIngo Molnar { 5977abc0753SCyrill Gorcunov return physid_isset(apicid, *map); 598e2780a68SIngo Molnar } 599e2780a68SIngo Molnar 6007abc0753SCyrill Gorcunov static inline void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) 601e2780a68SIngo Molnar { 6027abc0753SCyrill Gorcunov *retmap = *phys_map; 603e2780a68SIngo Molnar } 604e2780a68SIngo Molnar 605e2780a68SIngo Molnar static inline int __default_cpu_present_to_apicid(int mps_cpu) 606e2780a68SIngo Molnar { 607e2780a68SIngo Molnar if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu)) 608e2780a68SIngo Molnar return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu); 609e2780a68SIngo Molnar else 610e2780a68SIngo Molnar return BAD_APICID; 611e2780a68SIngo Molnar } 612e2780a68SIngo Molnar 613e2780a68SIngo Molnar static inline int 614e11dadabSThomas Gleixner __default_check_phys_apicid_present(int phys_apicid) 615e2780a68SIngo Molnar { 616e11dadabSThomas Gleixner return physid_isset(phys_apicid, phys_cpu_present_map); 617e2780a68SIngo Molnar } 618e2780a68SIngo Molnar 619e2780a68SIngo Molnar #ifdef CONFIG_X86_32 620e2780a68SIngo Molnar static inline int default_cpu_present_to_apicid(int mps_cpu) 621e2780a68SIngo Molnar { 622e2780a68SIngo Molnar return __default_cpu_present_to_apicid(mps_cpu); 623e2780a68SIngo Molnar } 624e2780a68SIngo Molnar 625e2780a68SIngo Molnar static inline int 626e11dadabSThomas Gleixner default_check_phys_apicid_present(int phys_apicid) 627e2780a68SIngo Molnar { 628e11dadabSThomas Gleixner return __default_check_phys_apicid_present(phys_apicid); 629e2780a68SIngo Molnar } 630e2780a68SIngo Molnar #else 631e2780a68SIngo Molnar extern int default_cpu_present_to_apicid(int mps_cpu); 632e11dadabSThomas Gleixner extern int default_check_phys_apicid_present(int phys_apicid); 633e2780a68SIngo Molnar #endif 634e2780a68SIngo Molnar 635e2780a68SIngo Molnar #endif /* CONFIG_X86_LOCAL_APIC */ 636eddc0e92SSeiji Aguchi extern void irq_enter(void); 637eddc0e92SSeiji Aguchi extern void irq_exit(void); 638eddc0e92SSeiji Aguchi 639eddc0e92SSeiji Aguchi static inline void entering_irq(void) 640eddc0e92SSeiji Aguchi { 641eddc0e92SSeiji Aguchi irq_enter(); 642eddc0e92SSeiji Aguchi exit_idle(); 643eddc0e92SSeiji Aguchi } 644eddc0e92SSeiji Aguchi 645eddc0e92SSeiji Aguchi static inline void entering_ack_irq(void) 646eddc0e92SSeiji Aguchi { 647eddc0e92SSeiji Aguchi entering_irq(); 6487834c103SDave Jones ack_APIC_irq(); 649eddc0e92SSeiji Aguchi } 650eddc0e92SSeiji Aguchi 6516dc17876SThomas Gleixner static inline void ipi_entering_ack_irq(void) 6526dc17876SThomas Gleixner { 6536dc17876SThomas Gleixner ack_APIC_irq(); 6546dc17876SThomas Gleixner irq_enter(); 6556dc17876SThomas Gleixner } 6566dc17876SThomas Gleixner 657eddc0e92SSeiji Aguchi static inline void exiting_irq(void) 658eddc0e92SSeiji Aguchi { 659eddc0e92SSeiji Aguchi irq_exit(); 660eddc0e92SSeiji Aguchi } 661eddc0e92SSeiji Aguchi 662eddc0e92SSeiji Aguchi static inline void exiting_ack_irq(void) 663eddc0e92SSeiji Aguchi { 664eddc0e92SSeiji Aguchi irq_exit(); 665eddc0e92SSeiji Aguchi /* Ack only at the end to avoid potential reentry */ 666eddc0e92SSeiji Aguchi ack_APIC_irq(); 667eddc0e92SSeiji Aguchi } 668e2780a68SIngo Molnar 66917405453SYoshihiro YUNOMAE extern void ioapic_zap_locks(void); 67017405453SYoshihiro YUNOMAE 6711965aae3SH. Peter Anvin #endif /* _ASM_X86_APIC_H */ 672