projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 620165f9 | 1 | /* |
| 8a56e1ee | 2 | * Copyright 2009 Freescale Semiconductor, Inc. |
| 620165f9 KG |
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> | |
| b92a226e | 19 | #include <asm/cpu_has_feature.h> |
| 620165f9 KG |
20 | |
| 21 | #define PPC_DBELL_MSG_BRDCAST (0x04000000) | |
| dc28518f | 22 | #define PPC_DBELL_TYPE(x) (((x) & 0xf) << (63-36)) |
| 4ab96919 | 23 | #define PPC_DBELL_TYPE_MASK PPC_DBELL_TYPE(0xf) |
| d30f6e48 | 24 | #define PPC_DBELL_LPID(x) ((x) << (63 - 49)) |
| 4ab96919 | 25 | #define PPC_DBELL_PIR_MASK 0x3fff |
| 620165f9 KG |
26 | enum ppc_dbell { |
| 27 | PPC_DBELL = 0, /* doorbell */ | |
| 28 | PPC_DBELL_CRIT = 1, /* critical doorbell */ | |
| 29 | PPC_G_DBELL = 2, /* guest doorbell */ | |
| 30 | PPC_G_DBELL_CRIT = 3, /* guest critical doorbell */ | |
| 31 | PPC_G_DBELL_MC = 4, /* guest mcheck doorbell */ | |
| 42d02b81 | 32 | PPC_DBELL_SERVER = 5, /* doorbell on server */ |
| 620165f9 KG |
33 | }; |
| 34 | ||
| 42d02b81 IM |
35 | #ifdef CONFIG_PPC_BOOK3S |
| 36 | ||
| 37 | #define PPC_DBELL_MSGTYPE PPC_DBELL_SERVER | |
| 42d02b81 | 38 | |
| 919ca868 IM |
39 | static inline void _ppc_msgsnd(u32 msg) |
| 40 | { | |
| 41 | if (cpu_has_feature(CPU_FTR_HVMODE)) | |
| 42 | __asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg)); | |
| 43 | else | |
| 44 | __asm__ __volatile__ (PPC_MSGSNDP(%0) : : "r" (msg)); | |
| 45 | } | |
| 46 | ||
| 42d02b81 IM |
47 | #else /* CONFIG_PPC_BOOK3S */ |
| 48 | ||
| 49 | #define PPC_DBELL_MSGTYPE PPC_DBELL | |
| 42d02b81 | 50 | |
| 919ca868 IM |
51 | static inline void _ppc_msgsnd(u32 msg) |
| 52 | { | |
| 53 | __asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg)); | |
| 54 | } | |
| 55 | ||
| 42d02b81 IM |
56 | #endif /* CONFIG_PPC_BOOK3S */ |
| 57 | ||
| b866cc21 NP |
58 | extern void doorbell_global_ipi(int cpu); |
| 59 | extern void doorbell_core_ipi(int cpu); | |
| 60 | extern int doorbell_try_core_ipi(int cpu); | |
| b9f1cd71 | 61 | extern void doorbell_exception(struct pt_regs *regs); |
| 620165f9 KG |
62 | |
| 63 | static inline void ppc_msgsnd(enum ppc_dbell type, u32 flags, u32 tag) | |
| 64 | { | |
| 65 | u32 msg = PPC_DBELL_TYPE(type) | (flags & PPC_DBELL_MSG_BRDCAST) | | |
| 66 | (tag & 0x07ffffff); | |
| 67 | ||
| 919ca868 | 68 | _ppc_msgsnd(msg); |
| 620165f9 KG |
69 | } |
| 70 | ||
| 71 | #endif /* _ASM_POWERPC_DBELL_H */ |