mirror of https://gitee.com/openkylin/linux.git
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/*
|
|
* Copyright 2009 Freescale Semicondutor, 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>
|
|
|
|
#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 */
|
|
};
|
|
|
|
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);
|
|
|
|
__asm__ __volatile__ (PPC_MSGSND(%0) : : "r" (msg));
|
|
}
|
|
|
|
#endif /* _ASM_POWERPC_DBELL_H */
|