/* * File: mca.h * Purpose: Machine check handling specific defines * * Copyright (C) 1999, 2004 Silicon Graphics, Inc. * Copyright (C) Vijay Chander (vijay@engr.sgi.com) * Copyright (C) Srinivasa Thirumalachar (sprasad@engr.sgi.com) * Copyright (C) Russ Anderson (rja@sgi.com) */ #ifndef _ASM_IA64_MCA_H #define _ASM_IA64_MCA_H #if !defined(__ASSEMBLY__) #include <linux/interrupt.h> #include <linux/types.h> #include <asm/param.h> #include <asm/sal.h> #include <asm/processor.h> #include <asm/mca_asm.h> #define IA64_MCA_RENDEZ_TIMEOUT (20 * 1000) /* value in milliseconds - 20 seconds */ typedef struct ia64_fptr { unsigned long fp; unsigned long gp; } ia64_fptr_t; typedef union cmcv_reg_u { u64 cmcv_regval; struct { u64 cmcr_vector : 8; u64 cmcr_reserved1 : 4; u64 cmcr_ignored1 : 1; u64 cmcr_reserved2 : 3; u64 cmcr_mask : 1; u64 cmcr_ignored2 : 47; } cmcv_reg_s; } cmcv_reg_t; #define cmcv_mask cmcv_reg_s.cmcr_mask #define cmcv_vector cmcv_reg_s.cmcr_vector enum { IA64_MCA_RENDEZ_CHECKIN_NOTDONE = 0x0, IA64_MCA_RENDEZ_CHECKIN_DONE = 0x1, IA64_MCA_RENDEZ_CHECKIN_INIT = 0x2, }; /* Information maintained by the MC infrastructure */ typedef struct ia64_mc_info_s { u64 imi_mca_handler; size_t imi_mca_handler_size; u64 imi_monarch_init_handler; size_t imi_monarch_init_handler_size; u64 imi_slave_init_handler; size_t imi_slave_init_handler_size; u8 imi_rendez_checkin[NR_CPUS]; } ia64_mc_info_t; /* Handover state from SAL to OS and vice versa, for both MCA and INIT events. * Besides the handover state, it also contains some saved registers from the * time of the event. * Note: mca_asm.S depends on the precise layout of this structure. */ struct ia64_sal_os_state { /* SAL to OS */ u64 os_gp; /* GP of the os registered with the SAL, physical */ u64 pal_proc; /* PAL_PROC entry point, physical */ u64 sal_proc; /* SAL_PROC entry point, physical */ u64 rv_rc; /* MCA - Rendezvous state, INIT - reason code */ u64 proc_state_param; /* from R18 */ u64 monarch; /* 1 for a monarch event, 0 for a slave */ /* common */ u64 sal_ra; /* Return address in SAL, physical */ u64 sal_gp; /* GP of the SAL - physical */ pal_min_state_area_t *pal_min_state; /* from R17. physical in asm, virtual in C */ /* Previous values of IA64_KR(CURRENT) and IA64_KR(CURRENT_STACK). * Note: if the MCA/INIT recovery code wants to resume to a new context * then it must change these values to reflect the new kernel stack. */ u64 prev_IA64_KR_CURRENT; /* previous value of IA64_KR(CURRENT) */ u64 prev_IA64_KR_CURRENT_STACK; struct task_struct *prev_task; /* previous task, NULL if it is not useful */ /* Some interrupt registers are not saved in minstate, pt_regs or * switch_stack. Because MCA/INIT can occur when interrupts are * disabled, we need to save the additional interrupt registers over * MCA/INIT and resume. */ u64 isr; u64 ifa; u64 itir; u64 iipa; u64 iim; u64 iha; /* OS to SAL */ u64 os_status; /* OS status to SAL, enum below */ u64 context; /* 0 if return to same context 1 if return to new context */ }; enum { IA64_MCA_CORRECTED = 0x0, /* Error has been corrected by OS_MCA */ IA64_MCA_WARM_BOOT = -1, /* Warm boot of the system need from SAL */ IA64_MCA_COLD_BOOT = -2, /* Cold boot of the system need from SAL */ IA64_MCA_HALT = -3 /* System to be halted by SAL */ }; enum { IA64_INIT_RESUME = 0x0, /* Resume after return from INIT */ IA64_INIT_WARM_BOOT = -1, /* Warm boot of the system need from SAL */ }; enum { IA64_MCA_SAME_CONTEXT = 0x0, /* SAL to return to same context */ IA64_MCA_NEW_CONTEXT = -1 /* SAL to return to new context */ }; /* Per-CPU MCA state that is too big for normal per-CPU variables. */ struct ia64_mca_cpu { u64 mca_stack[KERNEL_STACK_SIZE/8]; u64 init_stack[KERNEL_STACK_SIZE/8]; }; /* Array of physical addresses of each CPU's MCA area. */ extern unsigned long __per_cpu_mca[NR_CPUS]; extern int cpe_vector; extern int ia64_cpe_irq; extern void ia64_mca_init(void); extern void ia64_mca_cpu_init(void *); extern void ia64_os_mca_dispatch(void); extern void ia64_os_mca_dispatch_end(void); extern void ia64_mca_ucmc_handler(struct pt_regs *, struct ia64_sal_os_state *); extern void ia64_init_handler(struct pt_regs *, struct switch_stack *, struct ia64_sal_os_state *); extern void ia64_monarch_init_handler(void); extern void ia64_slave_init_handler(void); extern void ia64_mca_cmc_vector_setup(void); extern int ia64_reg_MCA_extension(int (*fn)(void *, struct ia64_sal_os_state *)); extern void ia64_unreg_MCA_extension(void); extern u64 ia64_get_rnat(u64 *); struct ia64_mca_notify_die { struct ia64_sal_os_state *sos; int *monarch_cpu; }; #else /* __ASSEMBLY__ */ #define IA64_MCA_CORRECTED 0x0 /* Error has been corrected by OS_MCA */ #define IA64_MCA_WARM_BOOT -1 /* Warm boot of the system need from SAL */ #define IA64_MCA_COLD_BOOT -2 /* Cold boot of the system need from SAL */ #define IA64_MCA_HALT -3 /* System to be halted by SAL */ #define IA64_INIT_RESUME 0x0 /* Resume after return from INIT */ #define IA64_INIT_WARM_BOOT -1 /* Warm boot of the system need from SAL */ #define IA64_MCA_SAME_CONTEXT 0x0 /* SAL to return to same context */ #define IA64_MCA_NEW_CONTEXT -1 /* SAL to return to new context */ #endif /* !__ASSEMBLY__ */ #endif /* _ASM_IA64_MCA_H */