projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 620165f9 KG |
1 | /* |
| 2 | * Author: Kumar Gala <galak@kernel.crashing.org> | |
| 3 | * | |
| 4 | * Copyright 2009 Freescale Semiconductor Inc. | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify it | |
| 7 | * under the terms of the GNU General Public License as published by the | |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 9 | * option) any later version. | |
| 10 | */ | |
| 11 | ||
| 12 | #include <linux/stddef.h> | |
| 13 | #include <linux/kernel.h> | |
| 14 | #include <linux/smp.h> | |
| 15 | #include <linux/threads.h> | |
| 16 | ||
| 17 | #include <asm/dbell.h> | |
| 18 | ||
| 19 | #ifdef CONFIG_SMP | |
| 20 | unsigned long dbell_smp_message[NR_CPUS]; | |
| 21 | ||
| 22 | void smp_dbell_message_pass(int target, int msg) | |
| 23 | { | |
| 24 | int i; | |
| 25 | ||
| 26 | if(target < NR_CPUS) { | |
| 27 | set_bit(msg, &dbell_smp_message[target]); | |
| 28 | ppc_msgsnd(PPC_DBELL, 0, target); | |
| 29 | } | |
| 30 | else if(target == MSG_ALL_BUT_SELF) { | |
| 31 | for_each_online_cpu(i) { | |
| 32 | if (i == smp_processor_id()) | |
| 33 | continue; | |
| 34 | set_bit(msg, &dbell_smp_message[i]); | |
| 35 | ppc_msgsnd(PPC_DBELL, 0, i); | |
| 36 | } | |
| 37 | } | |
| 38 | else { /* target == MSG_ALL */ | |
| 39 | for_each_online_cpu(i) | |
| 40 | set_bit(msg, &dbell_smp_message[i]); | |
| 41 | ppc_msgsnd(PPC_DBELL, PPC_DBELL_MSG_BRDCAST, 0); | |
| 42 | } | |
| 43 | } | |
| 44 | #endif |