nmi.h
3.31 KB
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Derived from IRIX <sys/SN/nmi.h>, Revision 1.5.
*
* Copyright (C) 1992 - 1997 Silicon Graphics, Inc.
*/
#ifndef __ASM_SN_NMI_H
#define __ASM_SN_NMI_H
#include <asm/sn/addrs.h>
/*
* The launch data structure resides at a fixed place in each node's memory
* and is used to communicate between the master processor and the slave
* processors.
*
* The master stores launch parameters in the launch structure
* corresponding to a target processor that is in a slave loop, then sends
* an interrupt to the slave processor. The slave calls the desired
* function, followed by an optional rendezvous function, then returns to
* the slave loop. The master does not wait for the slaves before
* returning.
*
* There is an array of launch structures, one per CPU on the node. One
* interrupt level is used per CPU.
*/
#define NMI_MAGIC 0x48414d4d455201
#define NMI_SIZEOF 0x40
#define NMI_OFF_MAGIC 0x00 /* Struct offsets for assembly */
#define NMI_OFF_FLAGS 0x08
#define NMI_OFF_CALL 0x10
#define NMI_OFF_CALLC 0x18
#define NMI_OFF_CALLPARM 0x20
#define NMI_OFF_GMASTER 0x28
/*
* The NMI routine is called only if the complement address is
* correct.
*
* Before control is transferred to a routine, the complement address
* is zeroed (invalidated) to prevent an accidental call from a spurious
* interrupt.
*
*/
#ifndef __ASSEMBLY__
typedef struct nmi_s {
volatile unsigned long magic; /* Magic number */
volatile unsigned long flags; /* Combination of flags above */
volatile void *call_addr; /* Routine for slave to call */
volatile void *call_addr_c; /* 1's complement of address */
volatile void *call_parm; /* Single parm passed to call */
volatile unsigned long gmaster; /* Flag true only on global master*/
} nmi_t;
#endif /* !__ASSEMBLY__ */
/* Following definitions are needed both in the prom & the kernel
* to identify the format of the nmi cpu register save area in the
* low memory on each node.
*/
#ifndef __ASSEMBLY__
struct reg_struct {
unsigned long gpr[32];
unsigned long sr;
unsigned long cause;
unsigned long epc;
unsigned long badva;
unsigned long error_epc;
unsigned long cache_err;
unsigned long nmi_sr;
};
#endif /* !__ASSEMBLY__ */
/* These are the assembly language offsets into the reg_struct structure */
#define R0_OFF 0x0
#define R1_OFF 0x8
#define R2_OFF 0x10
#define R3_OFF 0x18
#define R4_OFF 0x20
#define R5_OFF 0x28
#define R6_OFF 0x30
#define R7_OFF 0x38
#define R8_OFF 0x40
#define R9_OFF 0x48
#define R10_OFF 0x50
#define R11_OFF 0x58
#define R12_OFF 0x60
#define R13_OFF 0x68
#define R14_OFF 0x70
#define R15_OFF 0x78
#define R16_OFF 0x80
#define R17_OFF 0x88
#define R18_OFF 0x90
#define R19_OFF 0x98
#define R20_OFF 0xa0
#define R21_OFF 0xa8
#define R22_OFF 0xb0
#define R23_OFF 0xb8
#define R24_OFF 0xc0
#define R25_OFF 0xc8
#define R26_OFF 0xd0
#define R27_OFF 0xd8
#define R28_OFF 0xe0
#define R29_OFF 0xe8
#define R30_OFF 0xf0
#define R31_OFF 0xf8
#define SR_OFF 0x100
#define CAUSE_OFF 0x108
#define EPC_OFF 0x110
#define BADVA_OFF 0x118
#define ERROR_EPC_OFF 0x120
#define CACHE_ERR_OFF 0x128
#define NMISR_OFF 0x130
#endif /* __ASM_SN_NMI_H */