| /* |
| * Copyright 2009 Freescale Semicondutor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| * |
| * provides masks and opcode images for use by code generation, emulation |
| * and for instructions that older assemblers might not know about |
| */ |
| #ifndef _ASM_POWERPC_DBELL_H |
| #define _ASM_POWERPC_DBELL_H |
| |
| #include <linux/smp.h> |
| #include <linux/threads.h> |
| |
| #include <asm/ppc-opcode.h> |
| |
| #define PPC_DBELL_MSG_BRDCAST (0x04000000) |
| #define PPC_DBELL_TYPE(x) (((x) & 0xf) << (63-36)) |
| #define PPC_DBELL_TYPE_MASK PPC_DBELL_TYPE(0xf) |
| #define PPC_DBELL_LPID(x) ((x) << (63 - 49)) |
| #define PPC_DBELL_PIR_MASK 0x3fff |
| enum ppc_dbell { |
| PPC_DBELL = 0, /* doorbell */ |
| PPC_DBELL_CRIT = 1, /* critical doorbell */ |
| PPC_G_DBELL = 2, /* guest doorbell */ |
| PPC_G_DBELL_CRIT = 3, /* guest critical doorbell */ |
| PPC_G_DBELL_MC = 4, /* guest mcheck doorbell */ |
| }; |
| |
| extern void doorbell_cause_ipi(int cpu, unsigned long data); |
| extern void doorbell_exception(struct pt_regs *regs); |
| extern void doorbell_setup_this_cpu(void); |
| |
| static inline void ppc_msgsnd(enum ppc_dbell type, u32 flags, u32 tag) |
| { |
| u32 msg = PPC_DBELL_TYPE(type) | (flags & PPC_DBELL_MSG_BRDCAST) | |
| (tag & 0x07ffffff); |
| |
| __asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg)); |
| } |
| |
| #endif /* _ASM_POWERPC_DBELL_H */ |
