Release 4.14 arch/powerpc/include/asm/dbell.h
/*
* Copyright 2009 Freescale Semiconductor, 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>
#include <asm/cpu_has_feature.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 */
PPC_DBELL_SERVER = 5, /* doorbell on server */
};
#ifdef CONFIG_PPC_BOOK3S
#define PPC_DBELL_MSGTYPE PPC_DBELL_SERVER
static inline void _ppc_msgsnd(u32 msg)
{
__asm__ __volatile__ (ASM_FTR_IFSET(PPC_MSGSND(%1), PPC_MSGSNDP(%1), %0)
: : "i" (CPU_FTR_HVMODE), "r" (msg));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ian Munsie | 12 | 92.31% | 1 | 50.00% |
| Nicholas Piggin | 1 | 7.69% | 1 | 50.00% |
| Total | 13 | 100.00% | 2 | 100.00% |
/* sync before sending message */
static inline void ppc_msgsnd_sync(void)
{
__asm__ __volatile__ ("sync" : : : "memory");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicholas Piggin | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
/* sync after taking message interrupt */
static inline void ppc_msgsync(void)
{
/* sync is not required when taking messages from the same core */
__asm__ __volatile__ (ASM_FTR_IFSET(PPC_MSGSYNC " ; lwsync", "", %0)
: : "i" (CPU_FTR_HVMODE|CPU_FTR_ARCH_300));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicholas Piggin | 13 | 100.00% | 2 | 100.00% |
| Total | 13 | 100.00% | 2 | 100.00% |
static inline void _ppc_msgclr(u32 msg)
{
__asm__ __volatile__ (ASM_FTR_IFSET(PPC_MSGCLR(%1), PPC_MSGCLRP(%1), %0)
: : "i" (CPU_FTR_HVMODE), "r" (msg));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicholas Piggin | 13 | 100.00% | 1 | 100.00% |
| Total | 13 | 100.00% | 1 | 100.00% |
static inline void ppc_msgclr(enum ppc_dbell type)
{
u32 msg = PPC_DBELL_TYPE(type);
_ppc_msgclr(msg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicholas Piggin | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
#else /* CONFIG_PPC_BOOK3S */
#define PPC_DBELL_MSGTYPE PPC_DBELL
static inline void _ppc_msgsnd(u32 msg)
{
__asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ian Munsie | 13 | 100.00% | 1 | 100.00% |
| Total | 13 | 100.00% | 1 | 100.00% |
/* sync before sending message */
static inline void ppc_msgsnd_sync(void)
{
__asm__ __volatile__ ("sync" : : : "memory");
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicholas Piggin | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
/* sync after taking message interrupt */
static inline void ppc_msgsync(void)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicholas Piggin | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
#endif /* CONFIG_PPC_BOOK3S */
extern void doorbell_global_ipi(int cpu);
extern void doorbell_core_ipi(int cpu);
extern int doorbell_try_core_ipi(int cpu);
extern void doorbell_exception(struct pt_regs *regs);
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);
_ppc_msgsnd(msg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Kumar Gala | 37 | 88.10% | 1 | 50.00% |
| Ian Munsie | 5 | 11.90% | 1 | 50.00% |
| Total | 42 | 100.00% | 2 | 100.00% |
#endif /* _ASM_POWERPC_DBELL_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Nicholas Piggin | 104 | 36.11% | 5 | 33.33% |
| Kumar Gala | 101 | 35.07% | 1 | 6.67% |
| Ian Munsie | 52 | 18.06% | 2 | 13.33% |
| Benjamin Herrenschmidt | 10 | 3.47% | 1 | 6.67% |
| Alexander Graf | 8 | 2.78% | 1 | 6.67% |
| Scott Wood | 7 | 2.43% | 1 | 6.67% |
| Kevin Hao | 3 | 1.04% | 1 | 6.67% |
| Li Yang | 1 | 0.35% | 1 | 6.67% |
| Michael Neuling | 1 | 0.35% | 1 | 6.67% |
| Milton D. Miller II | 1 | 0.35% | 1 | 6.67% |
| Total | 288 | 100.00% | 15 | 100.00% |
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