2024-09-09 08:52:07 +00:00
|
|
|
/*
|
2024-09-09 08:57:42 +00:00
|
|
|
* Copyright 2009 Freescale Semiconductor, Inc.
|
2024-09-09 08:52:07 +00:00
|
|
|
*
|
|
|
|
|
* 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))
|
2024-09-09 08:57:42 +00:00
|
|
|
#define PPC_DBELL_TYPE_MASK PPC_DBELL_TYPE(0xf)
|
|
|
|
|
#define PPC_DBELL_LPID(x) ((x) << (63 - 49))
|
|
|
|
|
#define PPC_DBELL_PIR_MASK 0x3fff
|
2024-09-09 08:52:07 +00:00
|
|
|
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 */
|
2024-09-09 08:57:42 +00:00
|
|
|
PPC_DBELL_SERVER = 5, /* doorbell on server */
|
2024-09-09 08:52:07 +00:00
|
|
|
};
|
|
|
|
|
|
2024-09-09 08:57:42 +00:00
|
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
|
|
|
|
|
|
|
|
#define PPC_DBELL_MSGTYPE PPC_DBELL_SERVER
|
|
|
|
|
#define SPRN_DOORBELL_CPUTAG SPRN_TIR
|
|
|
|
|
#define PPC_DBELL_TAG_MASK 0x7f
|
|
|
|
|
|
|
|
|
|
static inline void _ppc_msgsnd(u32 msg)
|
|
|
|
|
{
|
|
|
|
|
if (cpu_has_feature(CPU_FTR_HVMODE))
|
|
|
|
|
__asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg));
|
|
|
|
|
else
|
|
|
|
|
__asm__ __volatile__ (PPC_MSGSNDP(%0) : : "r" (msg));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#else /* CONFIG_PPC_BOOK3S */
|
|
|
|
|
|
|
|
|
|
#define PPC_DBELL_MSGTYPE PPC_DBELL
|
|
|
|
|
#define SPRN_DOORBELL_CPUTAG SPRN_PIR
|
|
|
|
|
#define PPC_DBELL_TAG_MASK 0x3fff
|
|
|
|
|
|
|
|
|
|
static inline void _ppc_msgsnd(u32 msg)
|
|
|
|
|
{
|
|
|
|
|
__asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif /* CONFIG_PPC_BOOK3S */
|
|
|
|
|
|
2024-09-09 08:52:07 +00:00
|
|
|
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);
|
|
|
|
|
|
2024-09-09 08:57:42 +00:00
|
|
|
_ppc_msgsnd(msg);
|
2024-09-09 08:52:07 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#endif /* _ASM_POWERPC_DBELL_H */
|
