322 lines
7.9 KiB
C
322 lines
7.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/alpha/kernel/err_common.c
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*
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* Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation)
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*
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* Error handling code supporting Alpha systems
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*/
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <asm/io.h>
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#include <asm/hwrpb.h>
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#include <asm/smp.h>
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#include <asm/err_common.h>
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#include "err_impl.h"
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#include "proto.h"
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/*
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* err_print_prefix -- error handling print routines should prefix
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* all prints with this
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*/
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char *err_print_prefix = KERN_NOTICE;
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/*
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* Generic
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*/
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void
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mchk_dump_mem(void *data, size_t length, char **annotation)
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{
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unsigned long *ldata = data;
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size_t i;
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for (i = 0; (i * sizeof(*ldata)) < length; i++) {
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if (annotation && !annotation[i])
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annotation = NULL;
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printk("%s %08x: %016lx %s\n",
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err_print_prefix,
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(unsigned)(i * sizeof(*ldata)), ldata[i],
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annotation ? annotation[i] : "");
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}
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}
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void
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mchk_dump_logout_frame(struct el_common *mchk_header)
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{
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printk("%s -- Frame Header --\n"
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" Frame Size: %d (0x%x) bytes\n"
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" Flags: %s%s\n"
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" MCHK Code: 0x%x\n"
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" Frame Rev: %d\n"
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" Proc Offset: 0x%08x\n"
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" Sys Offset: 0x%08x\n"
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" -- Processor Region --\n",
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err_print_prefix,
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mchk_header->size, mchk_header->size,
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mchk_header->retry ? "RETRY " : "",
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mchk_header->err2 ? "SECOND_ERR " : "",
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mchk_header->code,
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mchk_header->frame_rev,
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mchk_header->proc_offset,
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mchk_header->sys_offset);
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mchk_dump_mem((void *)
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((unsigned long)mchk_header + mchk_header->proc_offset),
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mchk_header->sys_offset - mchk_header->proc_offset,
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NULL);
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printk("%s -- System Region --\n", err_print_prefix);
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mchk_dump_mem((void *)
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((unsigned long)mchk_header + mchk_header->sys_offset),
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mchk_header->size - mchk_header->sys_offset,
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NULL);
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printk("%s -- End of Frame --\n", err_print_prefix);
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}
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/*
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* Console Data Log
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*/
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/* Data */
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static struct el_subpacket_handler *subpacket_handler_list = NULL;
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static struct el_subpacket_annotation *subpacket_annotation_list = NULL;
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static struct el_subpacket *
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el_process_header_subpacket(struct el_subpacket *header)
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{
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union el_timestamp timestamp;
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char *name = "UNKNOWN EVENT";
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int packet_count = 0;
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int length = 0;
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if (header->class != EL_CLASS__HEADER) {
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printk("%s** Unexpected header CLASS %d TYPE %d, aborting\n",
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err_print_prefix,
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header->class, header->type);
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return NULL;
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}
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switch(header->type) {
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case EL_TYPE__HEADER__SYSTEM_ERROR_FRAME:
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name = "SYSTEM ERROR";
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length = header->by_type.sys_err.frame_length;
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packet_count =
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header->by_type.sys_err.frame_packet_count;
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timestamp.as_int = 0;
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break;
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case EL_TYPE__HEADER__SYSTEM_EVENT_FRAME:
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name = "SYSTEM EVENT";
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length = header->by_type.sys_event.frame_length;
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packet_count =
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header->by_type.sys_event.frame_packet_count;
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timestamp = header->by_type.sys_event.timestamp;
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break;
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case EL_TYPE__HEADER__HALT_FRAME:
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name = "ERROR HALT";
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length = header->by_type.err_halt.frame_length;
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packet_count =
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header->by_type.err_halt.frame_packet_count;
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timestamp = header->by_type.err_halt.timestamp;
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break;
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case EL_TYPE__HEADER__LOGOUT_FRAME:
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name = "LOGOUT FRAME";
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length = header->by_type.logout_header.frame_length;
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packet_count = 1;
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timestamp.as_int = 0;
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break;
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default: /* Unknown */
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printk("%s** Unknown header - CLASS %d TYPE %d, aborting\n",
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err_print_prefix,
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header->class, header->type);
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return NULL;
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}
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printk("%s*** %s:\n"
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" CLASS %d, TYPE %d\n",
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err_print_prefix,
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name,
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header->class, header->type);
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el_print_timestamp(×tamp);
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/*
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* Process the subpackets
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*/
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el_process_subpackets(header, packet_count);
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/* return the next header */
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header = (struct el_subpacket *)
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((unsigned long)header + header->length + length);
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return header;
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}
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static struct el_subpacket *
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el_process_subpacket_reg(struct el_subpacket *header)
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{
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struct el_subpacket *next = NULL;
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struct el_subpacket_handler *h = subpacket_handler_list;
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for (; h && h->class != header->class; h = h->next);
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if (h) next = h->handler(header);
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return next;
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}
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void
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el_print_timestamp(union el_timestamp *timestamp)
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{
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if (timestamp->as_int)
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printk("%s TIMESTAMP: %d/%d/%02d %d:%02d:%0d\n",
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err_print_prefix,
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timestamp->b.month, timestamp->b.day,
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timestamp->b.year, timestamp->b.hour,
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timestamp->b.minute, timestamp->b.second);
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}
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void
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el_process_subpackets(struct el_subpacket *header, int packet_count)
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{
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struct el_subpacket *subpacket;
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int i;
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subpacket = (struct el_subpacket *)
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((unsigned long)header + header->length);
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for (i = 0; subpacket && i < packet_count; i++) {
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printk("%sPROCESSING SUBPACKET %d\n", err_print_prefix, i);
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subpacket = el_process_subpacket(subpacket);
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}
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}
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struct el_subpacket *
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el_process_subpacket(struct el_subpacket *header)
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{
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struct el_subpacket *next = NULL;
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switch(header->class) {
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case EL_CLASS__TERMINATION:
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/* Termination packet, there are no more */
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break;
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case EL_CLASS__HEADER:
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next = el_process_header_subpacket(header);
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break;
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default:
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if (NULL == (next = el_process_subpacket_reg(header))) {
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printk("%s** Unexpected header CLASS %d TYPE %d"
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" -- aborting.\n",
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err_print_prefix,
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header->class, header->type);
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}
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break;
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}
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return next;
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}
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void
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el_annotate_subpacket(struct el_subpacket *header)
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{
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struct el_subpacket_annotation *a;
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char **annotation = NULL;
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for (a = subpacket_annotation_list; a; a = a->next) {
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if (a->class == header->class &&
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a->type == header->type &&
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a->revision == header->revision) {
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/*
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* We found the annotation
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*/
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annotation = a->annotation;
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printk("%s %s\n", err_print_prefix, a->description);
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break;
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}
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}
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mchk_dump_mem(header, header->length, annotation);
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}
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static void __init
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cdl_process_console_data_log(int cpu, struct percpu_struct *pcpu)
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{
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struct el_subpacket *header = (struct el_subpacket *)
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(IDENT_ADDR | pcpu->console_data_log_pa);
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int err;
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printk("%s******* CONSOLE DATA LOG FOR CPU %d. *******\n"
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"*** Error(s) were logged on a previous boot\n",
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err_print_prefix, cpu);
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for (err = 0; header && (header->class != EL_CLASS__TERMINATION); err++)
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header = el_process_subpacket(header);
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/* let the console know it's ok to clear the error(s) at restart */
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pcpu->console_data_log_pa = 0;
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printk("%s*** %d total error(s) logged\n"
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"**** END OF CONSOLE DATA LOG FOR CPU %d ****\n",
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err_print_prefix, err, cpu);
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}
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void __init
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cdl_check_console_data_log(void)
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{
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struct percpu_struct *pcpu;
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unsigned long cpu;
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for (cpu = 0; cpu < hwrpb->nr_processors; cpu++) {
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pcpu = (struct percpu_struct *)
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((unsigned long)hwrpb + hwrpb->processor_offset
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+ cpu * hwrpb->processor_size);
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if (pcpu->console_data_log_pa)
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cdl_process_console_data_log(cpu, pcpu);
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}
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}
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int __init
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cdl_register_subpacket_annotation(struct el_subpacket_annotation *new)
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{
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struct el_subpacket_annotation *a = subpacket_annotation_list;
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if (a == NULL) subpacket_annotation_list = new;
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else {
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for (; a->next != NULL; a = a->next) {
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if ((a->class == new->class && a->type == new->type) ||
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a == new) {
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printk("Attempted to re-register "
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"subpacket annotation\n");
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return -EINVAL;
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}
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}
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a->next = new;
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}
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new->next = NULL;
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return 0;
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}
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int __init
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cdl_register_subpacket_handler(struct el_subpacket_handler *new)
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{
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struct el_subpacket_handler *h = subpacket_handler_list;
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if (h == NULL) subpacket_handler_list = new;
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else {
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for (; h->next != NULL; h = h->next) {
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if (h->class == new->class || h == new) {
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printk("Attempted to re-register "
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"subpacket handler\n");
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return -EINVAL;
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}
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}
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h->next = new;
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}
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new->next = NULL;
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return 0;
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}
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