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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - arch/powerpc/include/asm/dbell.h
2 * Copyright 2009 Freescale Semiconductor, Inc.
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.
9 * provides masks and opcode images for use by code generation, emulation
10 * and for instructions that older assemblers might not know about
12 #ifndef _ASM_POWERPC_DBELL_H
13 #define _ASM_POWERPC_DBELL_H
15 #include <linux/smp.h>
16 #include <linux/threads.h>
18 #include <asm/ppc-opcode.h>
19 #include <asm/cpu_has_feature.h>
21 #define PPC_DBELL_MSG_BRDCAST (0x04000000)
22 #define PPC_DBELL_TYPE(x) (((x) & 0xf) << (63-36))
23 #define PPC_DBELL_TYPE_MASK PPC_DBELL_TYPE(0xf)
24 #define PPC_DBELL_LPID(x) ((x) << (63 - 49))
25 #define PPC_DBELL_PIR_MASK 0x3fff
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 */
32 PPC_DBELL_SERVER
= 5, /* doorbell on server */
35 #ifdef CONFIG_PPC_BOOK3S
37 #define PPC_DBELL_MSGTYPE PPC_DBELL_SERVER
38 #define SPRN_DOORBELL_CPUTAG SPRN_TIR
39 #define PPC_DBELL_TAG_MASK 0x7f
41 static inline void _ppc_msgsnd(u32 msg
)
43 if (cpu_has_feature(CPU_FTR_HVMODE
))
44 __asm__
__volatile__ (PPC_MSGSND(%0) : : "r" (msg
));
46 __asm__
__volatile__ (PPC_MSGSNDP(%0) : : "r" (msg
));
49 #else /* CONFIG_PPC_BOOK3S */
51 #define PPC_DBELL_MSGTYPE PPC_DBELL
52 #define SPRN_DOORBELL_CPUTAG SPRN_PIR
53 #define PPC_DBELL_TAG_MASK 0x3fff
55 static inline void _ppc_msgsnd(u32 msg
)
57 __asm__
__volatile__ (PPC_MSGSND(%0) : : "r" (msg
));
60 #endif /* CONFIG_PPC_BOOK3S */
62 extern void doorbell_cause_ipi(int cpu
, unsigned long data
);
63 extern void doorbell_exception(struct pt_regs
*regs
);
64 extern void doorbell_setup_this_cpu(void);
66 static inline void ppc_msgsnd(enum ppc_dbell type
, u32 flags
, u32 tag
)
68 u32 msg
= PPC_DBELL_TYPE(type
) | (flags
& PPC_DBELL_MSG_BRDCAST
) |
74 #endif /* _ASM_POWERPC_DBELL_H */