diff options
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/cputable.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/dbell.h | 43 |
2 files changed, 46 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index 4911104791c3..fca161190db4 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -145,6 +145,7 @@ extern const char *powerpc_base_platform; #define CPU_FTR_USE_TB ASM_CONST(0x0000000000000040) #define CPU_FTR_L2CSR ASM_CONST(0x0000000000000080) #define CPU_FTR_601 ASM_CONST(0x0000000000000100) +#define CPU_FTR_DBELL ASM_CONST(0x0000000000000200) #define CPU_FTR_CAN_NAP ASM_CONST(0x0000000000000400) #define CPU_FTR_L3CR ASM_CONST(0x0000000000000800) #define CPU_FTR_L3_DISABLE_NAP ASM_CONST(0x0000000000001000) @@ -373,7 +374,8 @@ extern const char *powerpc_base_platform; CPU_FTR_NODSISRALIGN | CPU_FTR_NOEXECUTE) #define CPU_FTRS_E500MC (CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | \ CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_NODSISRALIGN | \ - CPU_FTR_L2CSR | CPU_FTR_LWSYNC | CPU_FTR_NOEXECUTE) + CPU_FTR_L2CSR | CPU_FTR_LWSYNC | CPU_FTR_NOEXECUTE | \ + CPU_FTR_DBELL) #define CPU_FTRS_GENERIC_32 (CPU_FTR_COMMON | CPU_FTR_NODSISRALIGN) /* 64-bit CPUs */ diff --git a/arch/powerpc/include/asm/dbell.h b/arch/powerpc/include/asm/dbell.h new file mode 100644 index 000000000000..501189a543d1 --- /dev/null +++ b/arch/powerpc/include/asm/dbell.h @@ -0,0 +1,43 @@ +/* + * 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) << 28) +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 */ +}; + +#ifdef CONFIG_SMP +extern unsigned long dbell_smp_message[NR_CPUS]; +extern void smp_dbell_message_pass(int target, int msg); +#endif + +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 */ |