diff options
Diffstat (limited to 'include/asm-x86_64/apic.h')
| -rw-r--r-- | include/asm-x86_64/apic.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/include/asm-x86_64/apic.h b/include/asm-x86_64/apic.h new file mode 100644 index 00000000000..c025cc3ef78 --- /dev/null +++ b/include/asm-x86_64/apic.h @@ -0,0 +1,118 @@ +#ifndef __ASM_APIC_H +#define __ASM_APIC_H + +#include <linux/config.h> +#include <linux/pm.h> +#include <asm/fixmap.h> +#include <asm/apicdef.h> +#include <asm/system.h> + +#define Dprintk(x...) + +/* + * Debugging macros + */ +#define APIC_QUIET 0 +#define APIC_VERBOSE 1 +#define APIC_DEBUG 2 + +extern int apic_verbosity; + +/* + * 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) + +#ifdef CONFIG_X86_LOCAL_APIC + +struct pt_regs; + +/* + * Basic functions accessing APICs. + */ + +static __inline void apic_write(unsigned long reg, unsigned int v) +{ + *((volatile unsigned int *)(APIC_BASE+reg)) = v; +} + +static __inline void apic_write_atomic(unsigned long reg, unsigned int v) +{ + xchg((volatile unsigned int *)(APIC_BASE+reg), v); +} + +static __inline unsigned int apic_read(unsigned long reg) +{ + return *((volatile unsigned int *)(APIC_BASE+reg)); +} + +static __inline__ void apic_wait_icr_idle(void) +{ + while ( apic_read( APIC_ICR ) & APIC_ICR_BUSY ); +} + +#define FORCE_READ_AROUND_WRITE 0 +#define apic_read_around(x) +#define apic_write_around(x,y) apic_write((x),(y)) + +static inline void ack_APIC_irq(void) +{ + /* + * ack_APIC_irq() actually gets compiled as a single instruction: + * - a single rmw on Pentium/82489DX + * - a single write on P6+ cores (CONFIG_X86_GOOD_APIC) + * ... yummie. + */ + + /* Docs say use 0 for future compatibility */ + apic_write_around(APIC_EOI, 0); +} + +extern int get_maxlvt (void); +extern void clear_local_APIC (void); +extern void connect_bsp_APIC (void); +extern void disconnect_bsp_APIC (void); +extern void disable_local_APIC (void); +extern int verify_local_APIC (void); +extern void cache_APIC_registers (void); +extern void sync_Arb_IDs (void); +extern void init_bsp_APIC (void); +extern void setup_local_APIC (void); +extern void init_apic_mappings (void); +extern void smp_local_timer_interrupt (struct pt_regs * regs); +extern void setup_boot_APIC_clock (void); +extern void setup_secondary_APIC_clock (void); +extern void setup_apic_nmi_watchdog (void); +extern int reserve_lapic_nmi(void); +extern void release_lapic_nmi(void); +extern void disable_timer_nmi_watchdog(void); +extern void enable_timer_nmi_watchdog(void); +extern void nmi_watchdog_tick (struct pt_regs * regs, unsigned reason); +extern int APIC_init_uniprocessor (void); +extern void disable_APIC_timer(void); +extern void enable_APIC_timer(void); +extern void clustered_apic_check(void); + +extern int check_nmi_watchdog(void); +extern void nmi_watchdog_default(void); +extern int setup_nmi_watchdog(char *); + +extern unsigned int nmi_watchdog; +#define NMI_DEFAULT -1 +#define NMI_NONE 0 +#define NMI_IO_APIC 1 +#define NMI_LOCAL_APIC 2 +#define NMI_INVALID 3 + +#endif /* CONFIG_X86_LOCAL_APIC */ + +#define esr_disable 0 +extern unsigned boot_cpu_id; + +#endif /* __ASM_APIC_H */ |