projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| edb181ac YL |
1 | #ifndef __ASM_NUMAQ_WAKECPU_H |
| 2 | #define __ASM_NUMAQ_WAKECPU_H | |
| 1da177e4 LT |
3 | |
| 4 | /* This file copes with machines that wakeup secondary CPUs by NMIs */ | |
| 5 | ||
| 569712b2 YL |
6 | #define TRAMPOLINE_PHYS_LOW (0x8) |
| 7 | #define TRAMPOLINE_PHYS_HIGH (0xa) | |
| 1da177e4 LT |
8 | |
| 9 | /* We don't do anything here because we use NMI's to boot instead */ | |
| 10 | static inline void wait_for_init_deassert(atomic_t *deassert) | |
| 11 | { | |
| 12 | } | |
| 13 | ||
| 14 | /* | |
| 15 | * Because we use NMIs rather than the INIT-STARTUP sequence to | |
| 16 | * bootstrap the CPUs, the APIC may be in a weird state. Kick it. | |
| 17 | */ | |
| 18 | static inline void smp_callin_clear_local_apic(void) | |
| 19 | { | |
| 20 | clear_local_APIC(); | |
| 21 | } | |
| 22 | ||
| 23 | static inline void store_NMI_vector(unsigned short *high, unsigned short *low) | |
| 24 | { | |
| 25 | printk("Storing NMI vector\n"); | |
| 569712b2 YL |
26 | *high = |
| 27 | *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH)); | |
| 28 | *low = | |
| 29 | *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW)); | |
| 1da177e4 LT |
30 | } |
| 31 | ||
| 32 | static inline void restore_NMI_vector(unsigned short *high, unsigned short *low) | |
| 33 | { | |
| 34 | printk("Restoring NMI vector\n"); | |
| 569712b2 YL |
35 | *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH)) = |
| 36 | *high; | |
| 37 | *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) = | |
| 38 | *low; | |
| 1da177e4 LT |
39 | } |
| 40 | ||
| 569712b2 YL |
41 | static inline void inquire_remote_apic(int apicid) |
| 42 | { | |
| 43 | } | |
| 1da177e4 | 44 | |
| edb181ac | 45 | #endif /* __ASM_NUMAQ_WAKECPU_H */ |