mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 17:50:54 +07:00
2c86cd188f
files not using feature fixup don't need asm/feature-fixups.h files using feature fixup need asm/feature-fixups.h Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
/*
|
|
* 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/feature-fixups.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));
|
|
}
|
|
|
|
/* sync before sending message */
|
|
static inline void ppc_msgsnd_sync(void)
|
|
{
|
|
__asm__ __volatile__ ("sync" : : : "memory");
|
|
}
|
|
|
|
/* 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));
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
static inline void ppc_msgclr(enum ppc_dbell type)
|
|
{
|
|
u32 msg = PPC_DBELL_TYPE(type);
|
|
|
|
_ppc_msgclr(msg);
|
|
}
|
|
|
|
#else /* CONFIG_PPC_BOOK3S */
|
|
|
|
#define PPC_DBELL_MSGTYPE PPC_DBELL
|
|
|
|
static inline void _ppc_msgsnd(u32 msg)
|
|
{
|
|
__asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg));
|
|
}
|
|
|
|
/* sync before sending message */
|
|
static inline void ppc_msgsnd_sync(void)
|
|
{
|
|
__asm__ __volatile__ ("sync" : : : "memory");
|
|
}
|
|
|
|
/* sync after taking message interrupt */
|
|
static inline void ppc_msgsync(void)
|
|
{
|
|
}
|
|
|
|
#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);
|
|
}
|
|
|
|
#endif /* _ASM_POWERPC_DBELL_H */
|