Yinghai Lu | edb181a | 2008-07-25 02:17:55 -0700 | [diff] [blame] | 1 | #ifndef __ASM_NUMAQ_WAKECPU_H |
| 2 | #define __ASM_NUMAQ_WAKECPU_H |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | |
| 4 | /* This file copes with machines that wakeup secondary CPUs by NMIs */ |
| 5 | |
Yinghai Lu | 569712b | 2008-11-16 03:12:49 -0800 | [diff] [blame^] | 6 | #define TRAMPOLINE_PHYS_LOW (0x8) |
| 7 | #define TRAMPOLINE_PHYS_HIGH (0xa) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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"); |
Yinghai Lu | 569712b | 2008-11-16 03:12:49 -0800 | [diff] [blame^] | 26 | *high = |
| 27 | *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH)); |
| 28 | *low = |
| 29 | *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | } |
| 31 | |
| 32 | static inline void restore_NMI_vector(unsigned short *high, unsigned short *low) |
| 33 | { |
| 34 | printk("Restoring NMI vector\n"); |
Yinghai Lu | 569712b | 2008-11-16 03:12:49 -0800 | [diff] [blame^] | 35 | *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_HIGH)) = |
| 36 | *high; |
| 37 | *((volatile unsigned short *)phys_to_virt(TRAMPOLINE_PHYS_LOW)) = |
| 38 | *low; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | } |
| 40 | |
Yinghai Lu | 569712b | 2008-11-16 03:12:49 -0800 | [diff] [blame^] | 41 | static inline void inquire_remote_apic(int apicid) |
| 42 | { |
| 43 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Yinghai Lu | edb181a | 2008-07-25 02:17:55 -0700 | [diff] [blame] | 45 | #endif /* __ASM_NUMAQ_WAKECPU_H */ |