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185 lines
5.9 KiB
185 lines
5.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* File: mca.h |
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* Purpose: Machine check handling specific defines |
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* |
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* Copyright (C) 1999, 2004 Silicon Graphics, Inc. |
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* Copyright (C) Vijay Chander <[email protected]> |
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* Copyright (C) Srinivasa Thirumalachar <[email protected]> |
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* Copyright (C) Russ Anderson <[email protected]> |
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*/ |
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#ifndef _ASM_IA64_MCA_H |
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#define _ASM_IA64_MCA_H |
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#if !defined(__ASSEMBLY__) |
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#include <linux/percpu.h> |
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#include <linux/threads.h> |
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#include <linux/types.h> |
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#include <asm/ptrace.h> |
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#define IA64_MCA_RENDEZ_TIMEOUT (20 * 1000) /* value in milliseconds - 20 seconds */ |
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typedef struct ia64_fptr { |
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unsigned long fp; |
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unsigned long gp; |
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} ia64_fptr_t; |
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typedef union cmcv_reg_u { |
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u64 cmcv_regval; |
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struct { |
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u64 cmcr_vector : 8; |
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u64 cmcr_reserved1 : 4; |
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u64 cmcr_ignored1 : 1; |
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u64 cmcr_reserved2 : 3; |
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u64 cmcr_mask : 1; |
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u64 cmcr_ignored2 : 47; |
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} cmcv_reg_s; |
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} cmcv_reg_t; |
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#define cmcv_mask cmcv_reg_s.cmcr_mask |
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#define cmcv_vector cmcv_reg_s.cmcr_vector |
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enum { |
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IA64_MCA_RENDEZ_CHECKIN_NOTDONE = 0x0, |
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IA64_MCA_RENDEZ_CHECKIN_DONE = 0x1, |
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IA64_MCA_RENDEZ_CHECKIN_INIT = 0x2, |
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IA64_MCA_RENDEZ_CHECKIN_CONCURRENT_MCA = 0x3, |
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}; |
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/* Information maintained by the MC infrastructure */ |
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typedef struct ia64_mc_info_s { |
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u64 imi_mca_handler; |
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size_t imi_mca_handler_size; |
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u64 imi_monarch_init_handler; |
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size_t imi_monarch_init_handler_size; |
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u64 imi_slave_init_handler; |
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size_t imi_slave_init_handler_size; |
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u8 imi_rendez_checkin[NR_CPUS]; |
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} ia64_mc_info_t; |
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/* Handover state from SAL to OS and vice versa, for both MCA and INIT events. |
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* Besides the handover state, it also contains some saved registers from the |
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* time of the event. |
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* Note: mca_asm.S depends on the precise layout of this structure. |
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*/ |
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struct ia64_sal_os_state { |
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/* SAL to OS */ |
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unsigned long os_gp; /* GP of the os registered with the SAL, physical */ |
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unsigned long pal_proc; /* PAL_PROC entry point, physical */ |
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unsigned long sal_proc; /* SAL_PROC entry point, physical */ |
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unsigned long rv_rc; /* MCA - Rendezvous state, INIT - reason code */ |
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unsigned long proc_state_param; /* from R18 */ |
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unsigned long monarch; /* 1 for a monarch event, 0 for a slave */ |
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/* common */ |
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unsigned long sal_ra; /* Return address in SAL, physical */ |
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unsigned long sal_gp; /* GP of the SAL - physical */ |
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struct pal_min_state_area *pal_min_state; /* from R17. physical in asm, virtual in C */ |
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/* Previous values of IA64_KR(CURRENT) and IA64_KR(CURRENT_STACK). |
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* Note: if the MCA/INIT recovery code wants to resume to a new context |
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* then it must change these values to reflect the new kernel stack. |
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*/ |
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unsigned long prev_IA64_KR_CURRENT; /* previous value of IA64_KR(CURRENT) */ |
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unsigned long prev_IA64_KR_CURRENT_STACK; |
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struct task_struct *prev_task; /* previous task, NULL if it is not useful */ |
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/* Some interrupt registers are not saved in minstate, pt_regs or |
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* switch_stack. Because MCA/INIT can occur when interrupts are |
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* disabled, we need to save the additional interrupt registers over |
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* MCA/INIT and resume. |
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*/ |
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unsigned long isr; |
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unsigned long ifa; |
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unsigned long itir; |
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unsigned long iipa; |
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unsigned long iim; |
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unsigned long iha; |
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/* OS to SAL */ |
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unsigned long os_status; /* OS status to SAL, enum below */ |
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unsigned long context; /* 0 if return to same context |
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1 if return to new context */ |
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/* I-resources */ |
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unsigned long iip; |
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unsigned long ipsr; |
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unsigned long ifs; |
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}; |
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enum { |
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IA64_MCA_CORRECTED = 0x0, /* Error has been corrected by OS_MCA */ |
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IA64_MCA_WARM_BOOT = -1, /* Warm boot of the system need from SAL */ |
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IA64_MCA_COLD_BOOT = -2, /* Cold boot of the system need from SAL */ |
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IA64_MCA_HALT = -3 /* System to be halted by SAL */ |
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}; |
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enum { |
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IA64_INIT_RESUME = 0x0, /* Resume after return from INIT */ |
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IA64_INIT_WARM_BOOT = -1, /* Warm boot of the system need from SAL */ |
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}; |
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enum { |
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IA64_MCA_SAME_CONTEXT = 0x0, /* SAL to return to same context */ |
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IA64_MCA_NEW_CONTEXT = -1 /* SAL to return to new context */ |
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}; |
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/* Per-CPU MCA state that is too big for normal per-CPU variables. */ |
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struct ia64_mca_cpu { |
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u64 mca_stack[KERNEL_STACK_SIZE/8]; |
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u64 init_stack[KERNEL_STACK_SIZE/8]; |
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}; |
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/* Array of physical addresses of each CPU's MCA area. */ |
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extern unsigned long __per_cpu_mca[NR_CPUS]; |
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extern int cpe_vector; |
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extern int ia64_cpe_irq; |
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extern void ia64_mca_init(void); |
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extern void ia64_mca_irq_init(void); |
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extern void ia64_mca_cpu_init(void *); |
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extern void ia64_os_mca_dispatch(void); |
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extern void ia64_os_mca_dispatch_end(void); |
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extern void ia64_mca_ucmc_handler(struct pt_regs *, struct ia64_sal_os_state *); |
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extern void ia64_init_handler(struct pt_regs *, |
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struct switch_stack *, |
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struct ia64_sal_os_state *); |
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extern void ia64_os_init_on_kdump(void); |
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extern void ia64_monarch_init_handler(void); |
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extern void ia64_slave_init_handler(void); |
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extern void ia64_mca_cmc_vector_setup(void); |
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extern int ia64_reg_MCA_extension(int (*fn)(void *, struct ia64_sal_os_state *)); |
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extern void ia64_unreg_MCA_extension(void); |
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extern unsigned long ia64_get_rnat(unsigned long *); |
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extern void ia64_set_psr_mc(void); |
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extern void ia64_mca_printk(const char * fmt, ...) |
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__attribute__ ((format (printf, 1, 2))); |
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struct ia64_mca_notify_die { |
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struct ia64_sal_os_state *sos; |
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int *monarch_cpu; |
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int *data; |
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}; |
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DECLARE_PER_CPU(u64, ia64_mca_pal_base); |
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#else /* __ASSEMBLY__ */ |
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#define IA64_MCA_CORRECTED 0x0 /* Error has been corrected by OS_MCA */ |
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#define IA64_MCA_WARM_BOOT -1 /* Warm boot of the system need from SAL */ |
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#define IA64_MCA_COLD_BOOT -2 /* Cold boot of the system need from SAL */ |
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#define IA64_MCA_HALT -3 /* System to be halted by SAL */ |
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#define IA64_INIT_RESUME 0x0 /* Resume after return from INIT */ |
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#define IA64_INIT_WARM_BOOT -1 /* Warm boot of the system need from SAL */ |
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#define IA64_MCA_SAME_CONTEXT 0x0 /* SAL to return to same context */ |
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#define IA64_MCA_NEW_CONTEXT -1 /* SAL to return to new context */ |
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#endif /* !__ASSEMBLY__ */ |
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#endif /* _ASM_IA64_MCA_H */
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