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620165f9 KG |
1 | /* |
2 | * Copyright 2009 Freescale Semicondutor, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | * | |
9 | * provides masks and opcode images for use by code generation, emulation | |
10 | * and for instructions that older assemblers might not know about | |
11 | */ | |
12 | #ifndef _ASM_POWERPC_DBELL_H | |
13 | #define _ASM_POWERPC_DBELL_H | |
14 | ||
15 | #include <linux/smp.h> | |
16 | #include <linux/threads.h> | |
17 | ||
18 | #include <asm/ppc-opcode.h> | |
19 | ||
20 | #define PPC_DBELL_MSG_BRDCAST (0x04000000) | |
dc28518f | 21 | #define PPC_DBELL_TYPE(x) (((x) & 0xf) << (63-36)) |
620165f9 KG |
22 | enum ppc_dbell { |
23 | PPC_DBELL = 0, /* doorbell */ | |
24 | PPC_DBELL_CRIT = 1, /* critical doorbell */ | |
25 | PPC_G_DBELL = 2, /* guest doorbell */ | |
26 | PPC_G_DBELL_CRIT = 3, /* guest critical doorbell */ | |
27 | PPC_G_DBELL_MC = 4, /* guest mcheck doorbell */ | |
28 | }; | |
29 | ||
23d72bfd | 30 | extern void doorbell_cause_ipi(int cpu, unsigned long data); |
b9f1cd71 BH |
31 | extern void doorbell_exception(struct pt_regs *regs); |
32 | extern void doorbell_setup_this_cpu(void); | |
620165f9 KG |
33 | |
34 | static inline void ppc_msgsnd(enum ppc_dbell type, u32 flags, u32 tag) | |
35 | { | |
36 | u32 msg = PPC_DBELL_TYPE(type) | (flags & PPC_DBELL_MSG_BRDCAST) | | |
37 | (tag & 0x07ffffff); | |
38 | ||
39 | __asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg)); | |
40 | } | |
41 | ||
42 | #endif /* _ASM_POWERPC_DBELL_H */ |