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43ed3baf62
Printing message to console from MCA/INIT handler is useful, however doing oops_in_progress = 1 in them exactly makes something in kernel wrong. Especially it sounds ugly if system goes wrong after returning from recoverable MCA. This patch adds ia64_mca_printk() function that collects messages into temporary-not-so-large message buffer during in MCA/INIT environment and print them out later, after returning to normal context or when handlers determine to down the system. Also this print function is exported for use in extensional MCA handler. It would be useful to describe detail about recovery. NOTE: I don't think it is sane thing if temporary message buffer is enlarged enough to hold whole stack dumps from INIT, so buffering is disabled during stack dump from INIT-monarch (= default_monarch_init_process). please fix it in future. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Acked-by: Russ Anderson <rja@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
125 lines
4.7 KiB
C
125 lines
4.7 KiB
C
/*
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* File: mca_drv.h
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* Purpose: Define helpers for Generic MCA handling
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*
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* Copyright (C) 2004 FUJITSU LIMITED
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* Copyright (C) Hidetoshi Seto (seto.hidetoshi@jp.fujitsu.com)
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*/
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/*
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* Processor error section:
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*
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* +-sal_log_processor_info_t *info-------------+
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* | sal_log_section_hdr_t header; |
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* | ... |
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* | sal_log_mod_error_info_t info[0]; |
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* +-+----------------+-------------------------+
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* | CACHE_CHECK | ^ num_cache_check v
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* +----------------+
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* | TLB_CHECK | ^ num_tlb_check v
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* +----------------+
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* | BUS_CHECK | ^ num_bus_check v
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* +----------------+
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* | REG_FILE_CHECK | ^ num_reg_file_check v
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* +----------------+
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* | MS_CHECK | ^ num_ms_check v
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* +-struct cpuid_info *id----------------------+
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* | regs[5]; |
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* | reserved; |
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* +-sal_processor_static_info_t *regs----------+
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* | valid; |
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* | ... |
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* | fr[128]; |
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* +--------------------------------------------+
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*/
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/* peidx: index of processor error section */
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typedef struct peidx_table {
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sal_log_processor_info_t *info;
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struct sal_cpuid_info *id;
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sal_processor_static_info_t *regs;
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} peidx_table_t;
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#define peidx_head(p) (((p)->info))
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#define peidx_mid(p) (((p)->id))
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#define peidx_bottom(p) (((p)->regs))
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#define peidx_psp(p) (&(peidx_head(p)->proc_state_parameter))
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#define peidx_field_valid(p) (&(peidx_head(p)->valid))
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#define peidx_minstate_area(p) (&(peidx_bottom(p)->min_state_area))
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#define peidx_cache_check_num(p) (peidx_head(p)->valid.num_cache_check)
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#define peidx_tlb_check_num(p) (peidx_head(p)->valid.num_tlb_check)
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#define peidx_bus_check_num(p) (peidx_head(p)->valid.num_bus_check)
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#define peidx_reg_file_check_num(p) (peidx_head(p)->valid.num_reg_file_check)
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#define peidx_ms_check_num(p) (peidx_head(p)->valid.num_ms_check)
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#define peidx_cache_check_idx(p, n) (n)
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#define peidx_tlb_check_idx(p, n) (peidx_cache_check_idx(p, peidx_cache_check_num(p)) + n)
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#define peidx_bus_check_idx(p, n) (peidx_tlb_check_idx(p, peidx_tlb_check_num(p)) + n)
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#define peidx_reg_file_check_idx(p, n) (peidx_bus_check_idx(p, peidx_bus_check_num(p)) + n)
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#define peidx_ms_check_idx(p, n) (peidx_reg_file_check_idx(p, peidx_reg_file_check_num(p)) + n)
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#define peidx_mod_error_info(p, name, n) \
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({ int __idx = peidx_##name##_idx(p, n); \
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sal_log_mod_error_info_t *__ret = NULL; \
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if (peidx_##name##_num(p) > n) /*BUG*/ \
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__ret = &(peidx_head(p)->info[__idx]); \
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__ret; })
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#define peidx_cache_check(p, n) peidx_mod_error_info(p, cache_check, n)
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#define peidx_tlb_check(p, n) peidx_mod_error_info(p, tlb_check, n)
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#define peidx_bus_check(p, n) peidx_mod_error_info(p, bus_check, n)
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#define peidx_reg_file_check(p, n) peidx_mod_error_info(p, reg_file_check, n)
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#define peidx_ms_check(p, n) peidx_mod_error_info(p, ms_check, n)
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#define peidx_check_info(proc, name, n) \
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({ \
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sal_log_mod_error_info_t *__info = peidx_mod_error_info(proc, name, n);\
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u64 __temp = __info && __info->valid.check_info \
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? __info->check_info : 0; \
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__temp; })
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/* slidx: index of SAL log error record */
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typedef struct slidx_list {
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struct list_head list;
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sal_log_section_hdr_t *hdr;
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} slidx_list_t;
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typedef struct slidx_table {
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sal_log_record_header_t *header;
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int n_sections; /* # of section headers */
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struct list_head proc_err;
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struct list_head mem_dev_err;
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struct list_head sel_dev_err;
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struct list_head pci_bus_err;
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struct list_head smbios_dev_err;
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struct list_head pci_comp_err;
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struct list_head plat_specific_err;
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struct list_head host_ctlr_err;
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struct list_head plat_bus_err;
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struct list_head unsupported; /* list of unsupported sections */
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} slidx_table_t;
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#define slidx_foreach_entry(pos, head) \
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list_for_each_entry(pos, head, list)
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#define slidx_first_entry(head) \
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(((head)->next != (head)) ? list_entry((head)->next, typeof(slidx_list_t), list) : NULL)
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#define slidx_count(slidx, sec) \
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({ int __count = 0; \
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slidx_list_t *__pos; \
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slidx_foreach_entry(__pos, &((slidx)->sec)) { __count++; }\
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__count; })
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struct mca_table_entry {
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int start_addr; /* location-relative starting address of MCA recoverable range */
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int end_addr; /* location-relative ending address of MCA recoverable range */
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};
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extern const struct mca_table_entry *search_mca_tables (unsigned long addr);
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extern int mca_recover_range(unsigned long);
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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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extern void ia64_mlogbuf_dump(void);
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