diff options
Diffstat (limited to 'include/asm-x86/apic_64.h')
| -rw-r--r-- | include/asm-x86/apic_64.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/include/asm-x86/apic_64.h b/include/asm-x86/apic_64.h new file mode 100644 index 0000000..85125ef --- /dev/null +++ b/include/asm-x86/apic_64.h @@ -0,0 +1,107 @@ +#ifndef __ASM_APIC_H +#define __ASM_APIC_H + +#include <linux/pm.h> +#include <linux/delay.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; +extern int apic_runs_main_timer; +extern int ioapic_force; +extern int apic_mapped; + +/* + * 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) + +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 unsigned int apic_read(unsigned long reg) +{ + return *((volatile unsigned int *)(APIC_BASE+reg)); +} + +extern void apic_wait_icr_idle(void); +extern unsigned int safe_apic_wait_icr_idle(void); + +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(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 (int virt_wire_setup); +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 (void); +extern void setup_boot_APIC_clock (void); +extern void setup_secondary_APIC_clock (void); +extern int APIC_init_uniprocessor (void); +extern void disable_APIC_timer(void); +extern void enable_APIC_timer(void); +extern void setup_apic_routing(void); + +extern void setup_APIC_extended_lvt(unsigned char lvt_off, unsigned char vector, + unsigned char msg_type, unsigned char mask); + +extern int apic_is_clustered_box(void); + +#define K8_APIC_EXT_LVT_BASE 0x500 +#define K8_APIC_EXT_INT_MSG_FIX 0x0 +#define K8_APIC_EXT_INT_MSG_SMI 0x2 +#define K8_APIC_EXT_INT_MSG_NMI 0x4 +#define K8_APIC_EXT_INT_MSG_EXT 0x7 +#define K8_APIC_EXT_LVT_ENTRY_THRESHOLD 0 + +void smp_send_timer_broadcast_ipi(void); +void switch_APIC_timer_to_ipi(void *cpumask); +void switch_ipi_to_APIC_timer(void *cpumask); + +#define ARCH_APICTIMER_STOPS_ON_C3 1 + +extern unsigned boot_cpu_id; +extern int local_apic_timer_c2_ok; + +#endif /* __ASM_APIC_H */ |