Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ASM_MACH_IPI_H |
| 2 | #define __ASM_MACH_IPI_H |
| 3 | |
Keith Owens | e77deac | 2006-06-26 13:59:56 +0200 | [diff] [blame] | 4 | /* Avoid include hell */ |
| 5 | #define NMI_VECTOR 0x02 |
| 6 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | void send_IPI_mask_bitmask(cpumask_t mask, int vector); |
| 8 | void __send_IPI_shortcut(unsigned int shortcut, int vector); |
| 9 | |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 10 | extern int no_broadcast; |
| 11 | |
Glauber Costa | 5af5573 | 2008-03-25 13:28:56 -0300 | [diff] [blame^] | 12 | #ifdef CONFIG_X86_64 |
| 13 | #include <asm/genapic.h> |
| 14 | #define send_IPI_mask (genapic->send_IPI_mask) |
| 15 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | static inline void send_IPI_mask(cpumask_t mask, int vector) |
| 17 | { |
| 18 | send_IPI_mask_bitmask(mask, vector); |
| 19 | } |
Glauber Costa | 5af5573 | 2008-03-25 13:28:56 -0300 | [diff] [blame^] | 20 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 22 | static inline void __local_send_IPI_allbutself(int vector) |
| 23 | { |
Keith Owens | e77deac | 2006-06-26 13:59:56 +0200 | [diff] [blame] | 24 | if (no_broadcast || vector == NMI_VECTOR) { |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 25 | cpumask_t mask = cpu_online_map; |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 26 | |
Zwane Mwaikambo | 329d400 | 2006-01-11 22:43:09 +0100 | [diff] [blame] | 27 | cpu_clear(smp_processor_id(), mask); |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 28 | send_IPI_mask(mask, vector); |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 29 | } else |
| 30 | __send_IPI_shortcut(APIC_DEST_ALLBUT, vector); |
| 31 | } |
| 32 | |
| 33 | static inline void __local_send_IPI_all(int vector) |
| 34 | { |
Keith Owens | e77deac | 2006-06-26 13:59:56 +0200 | [diff] [blame] | 35 | if (no_broadcast || vector == NMI_VECTOR) |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 36 | send_IPI_mask(cpu_online_map, vector); |
| 37 | else |
| 38 | __send_IPI_shortcut(APIC_DEST_ALLINC, vector); |
| 39 | } |
| 40 | |
Glauber Costa | 5af5573 | 2008-03-25 13:28:56 -0300 | [diff] [blame^] | 41 | #ifdef CONFIG_X86_64 |
| 42 | #define send_IPI_allbutself (genapic->send_IPI_allbutself) |
| 43 | #define send_IPI_all (genapic->send_IPI_all) |
| 44 | #else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | static inline void send_IPI_allbutself(int vector) |
| 46 | { |
| 47 | /* |
| 48 | * if there are no other CPUs in the system then we get an APIC send |
| 49 | * error if we try to broadcast, thus avoid sending IPIs in this case. |
| 50 | */ |
| 51 | if (!(num_online_cpus() > 1)) |
| 52 | return; |
| 53 | |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 54 | __local_send_IPI_allbutself(vector); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | return; |
| 56 | } |
| 57 | |
| 58 | static inline void send_IPI_all(int vector) |
| 59 | { |
Ashok Raj | 67664c8 | 2005-06-25 14:54:52 -0700 | [diff] [blame] | 60 | __local_send_IPI_all(vector); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | } |
Glauber Costa | 5af5573 | 2008-03-25 13:28:56 -0300 | [diff] [blame^] | 62 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
| 64 | #endif /* __ASM_MACH_IPI_H */ |