arch/alpha/kernel/err_common.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0
 /*
  *	linux/arch/alpha/kernel/err_common.c
  *
  *	Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation)
  *
  *	Error handling code supporting Alpha systems
  */

 #include <linux/init.h>
 #include <linux/sched.h>

 #include <asm/io.h>
 #include <asm/hwrpb.h>
 #include <asm/smp.h>
 #include <asm/err_common.h>

 #include "err_impl.h"
 #include "proto.h"

 /*
  * err_print_prefix -- error handling print routines should prefix
  * all prints with this
  */
 char *err_print_prefix = KERN_NOTICE;


 /*
  * Generic
  */
 void
 mchk_dump_mem(void *data, size_t length, char **annotation)
 {
 	unsigned long *ldata = data;
 	size_t i;

 	for (i = 0; (i * sizeof(*ldata)) < length; i++) {
 		if (annotation && !annotation[i])
 			annotation = NULL;
 		printk("%s    %08x: %016lx    %s\n",
 		       err_print_prefix,
 		       (unsigned)(i * sizeof(*ldata)), ldata[i],
 		       annotation ? annotation[i] : "");
 	}
 }

 void
 mchk_dump_logout_frame(struct el_common *mchk_header)
 {
 	printk("%s  -- Frame Header --\n"
 	         "    Frame Size:   %d (0x%x) bytes\n"
 	         "    Flags:        %s%s\n"
 	         "    MCHK Code:    0x%x\n"
 	         "    Frame Rev:    %d\n"
 	         "    Proc Offset:  0x%08x\n"
 	         "    Sys Offset:   0x%08x\n"
   	         "  -- Processor Region --\n",
 	       err_print_prefix,
 	       mchk_header->size, mchk_header->size,
 	       mchk_header->retry ? "RETRY " : "",
   	         mchk_header->err2 ? "SECOND_ERR " : "",
 	       mchk_header->code,
 	       mchk_header->frame_rev,
 	       mchk_header->proc_offset,
 	       mchk_header->sys_offset);

 	mchk_dump_mem((void *)
 		      ((unsigned long)mchk_header + mchk_header->proc_offset),
 		      mchk_header->sys_offset - mchk_header->proc_offset,
 		      NULL);

 	printk("%s  -- System Region --\n", err_print_prefix);
 	mchk_dump_mem((void *)
 		      ((unsigned long)mchk_header + mchk_header->sys_offset),
 		      mchk_header->size - mchk_header->sys_offset,
 		      NULL);
 	printk("%s  -- End of Frame --\n", err_print_prefix);
 }


 /*
  * Console Data Log
  */
 /* Data */
 static struct el_subpacket_handler *subpacket_handler_list = NULL;
 static struct el_subpacket_annotation *subpacket_annotation_list = NULL;

 static struct el_subpacket *
 el_process_header_subpacket(struct el_subpacket *header)
 {
 	union el_timestamp timestamp;
 	char *name = "UNKNOWN EVENT";
 	int packet_count = 0;
 	int length = 0;

 	if (header->class != EL_CLASS__HEADER) {
 		printk("%s** Unexpected header CLASS %d TYPE %d, aborting\n",
 		       err_print_prefix,
 		       header->class, header->type);
 		return NULL;
 	}

 	switch(header->type) {
 	case EL_TYPE__HEADER__SYSTEM_ERROR_FRAME:
 		name = "SYSTEM ERROR";
 		length = header->by_type.sys_err.frame_length;
 		packet_count =
 			header->by_type.sys_err.frame_packet_count;
 		timestamp.as_int = 0;
 		break;
 	case EL_TYPE__HEADER__SYSTEM_EVENT_FRAME:
 		name = "SYSTEM EVENT";
 		length = header->by_type.sys_event.frame_length;
 		packet_count =
 			header->by_type.sys_event.frame_packet_count;
 		timestamp = header->by_type.sys_event.timestamp;
 		break;
 	case EL_TYPE__HEADER__HALT_FRAME:
 		name = "ERROR HALT";
 		length = header->by_type.err_halt.frame_length;
 		packet_count =
 			header->by_type.err_halt.frame_packet_count;
 		timestamp = header->by_type.err_halt.timestamp;
 		break;
 	case EL_TYPE__HEADER__LOGOUT_FRAME:
 		name = "LOGOUT FRAME";
 		length = header->by_type.logout_header.frame_length;
 		packet_count = 1;
 		timestamp.as_int = 0;
 		break;
 	default: /* Unknown */
 		printk("%s** Unknown header - CLASS %d TYPE %d, aborting\n",
 		       err_print_prefix,
 		       header->class, header->type);
 		return NULL;
 	}

 	printk("%s*** %s:\n"
 	         "  CLASS %d, TYPE %d\n",
 	       err_print_prefix,
 	       name,
 	       header->class, header->type);
 	el_print_timestamp(&timestamp);

 	/*
 	 * Process the subpackets
 	 */
 	el_process_subpackets(header, packet_count);

 	/* return the next header */
 	header = (struct el_subpacket *)
 		((unsigned long)header + header->length + length);
 	return header;
 }

 static struct el_subpacket *
 el_process_subpacket_reg(struct el_subpacket *header)
 {
 	struct el_subpacket *next = NULL;
 	struct el_subpacket_handler *h = subpacket_handler_list;

 	for (; h && h->class != header->class; h = h->next);
 	if (h) next = h->handler(header);

 	return next;
 }

 void
 el_print_timestamp(union el_timestamp *timestamp)
 {
 	if (timestamp->as_int)
 		printk("%s  TIMESTAMP: %d/%d/%02d %d:%02d:%0d\n",
 		       err_print_prefix,
 		       timestamp->b.month, timestamp->b.day,
 		       timestamp->b.year, timestamp->b.hour,
 		       timestamp->b.minute, timestamp->b.second);
 }

 void
 el_process_subpackets(struct el_subpacket *header, int packet_count)
 {
 	struct el_subpacket *subpacket;
 	int i;

 	subpacket = (struct el_subpacket *)
 		((unsigned long)header + header->length);

 	for (i = 0; subpacket && i < packet_count; i++) {
 		printk("%sPROCESSING SUBPACKET %d\n", err_print_prefix, i);
 		subpacket = el_process_subpacket(subpacket);
 	}
 }

 struct el_subpacket *
 el_process_subpacket(struct el_subpacket *header)
 {
 	struct el_subpacket *next = NULL;

 	switch(header->class) {
 	case EL_CLASS__TERMINATION:
 		/* Termination packet, there are no more */
 		break;
 	case EL_CLASS__HEADER:
 		next = el_process_header_subpacket(header);
 		break;
 	default:
 		if (NULL == (next = el_process_subpacket_reg(header))) {
 			printk("%s** Unexpected header CLASS %d TYPE %d"
 			       " -- aborting.\n",
 			       err_print_prefix,
 			       header->class, header->type);
 		}
 		break;
 	}

 	return next;
 }

 void
 el_annotate_subpacket(struct el_subpacket *header)
 {
 	struct el_subpacket_annotation *a;
 	char **annotation = NULL;

 	for (a = subpacket_annotation_list; a; a = a->next) {
 		if (a->class == header->class &&
 		    a->type == header->type &&
 		    a->revision == header->revision) {
 			/*
 			 * We found the annotation
 			 */
 			annotation = a->annotation;
 			printk("%s  %s\n", err_print_prefix, a->description);
 			break;
 		}
 	}

 	mchk_dump_mem(header, header->length, annotation);
 }

 static void __init
 cdl_process_console_data_log(int cpu, struct percpu_struct *pcpu)
 {
 	struct el_subpacket *header = (struct el_subpacket *)
 		(IDENT_ADDR | pcpu->console_data_log_pa);
 	int err;

 	printk("%s******* CONSOLE DATA LOG FOR CPU %d. *******\n"
 	         "*** Error(s) were logged on a previous boot\n",
 	       err_print_prefix, cpu);

 	for (err = 0; header && (header->class != EL_CLASS__TERMINATION); err++)
 		header = el_process_subpacket(header);

 	/* let the console know it's ok to clear the error(s) at restart */
 	pcpu->console_data_log_pa = 0;

 	printk("%s*** %d total error(s) logged\n"
 	         "**** END OF CONSOLE DATA LOG FOR CPU %d ****\n",
 	       err_print_prefix, err, cpu);
 }

 void __init
 cdl_check_console_data_log(void)
 {
 	struct percpu_struct *pcpu;
 	unsigned long cpu;

 	for (cpu = 0; cpu < hwrpb->nr_processors; cpu++) {
 		pcpu = (struct percpu_struct *)
 			((unsigned long)hwrpb + hwrpb->processor_offset
 			 + cpu * hwrpb->processor_size);
 		if (pcpu->console_data_log_pa)
 			cdl_process_console_data_log(cpu, pcpu);
 	}

 }

 int __init
 cdl_register_subpacket_annotation(struct el_subpacket_annotation *new)
 {
 	struct el_subpacket_annotation *a = subpacket_annotation_list;

 	if (a == NULL) subpacket_annotation_list = new;
 	else {
 		for (; a->next != NULL; a = a->next) {
 			if ((a->class == new->class && a->type == new->type) ||
 			    a == new) {
 				printk("Attempted to re-register "
 				       "subpacket annotation\n");
 				return -EINVAL;
 			}
 		}
 		a->next = new;
 	}
 	new->next = NULL;

 	return 0;
 }

 int __init
 cdl_register_subpacket_handler(struct el_subpacket_handler *new)
 {
 	struct el_subpacket_handler *h = subpacket_handler_list;

 	if (h == NULL) subpacket_handler_list = new;
 	else {
 		for (; h->next != NULL; h = h->next) {
 			if (h->class == new->class || h == new) {
 				printk("Attempted to re-register "
 				       "subpacket handler\n");
 				return -EINVAL;
 			}
 		}
 		h->next = new;
 	}
 	new->next = NULL;

 	return 0;
 }
	// SPDX-License-Identifier: GPL-2.0
	/*
	* linux/arch/alpha/kernel/err_common.c
	*
	* Copyright (C) 2000 Jeff Wiedemeier (Compaq Computer Corporation)
	*
	* Error handling code supporting Alpha systems
	*/

	#include <linux/init.h>
	#include <linux/sched.h>

	#include <asm/io.h>
	#include <asm/hwrpb.h>
	#include <asm/smp.h>
	#include <asm/err_common.h>

	#include "err_impl.h"
	#include "proto.h"

	/*
	* err_print_prefix -- error handling print routines should prefix
	* all prints with this
	*/
	char *err_print_prefix = KERN_NOTICE;


	/*
	* Generic
	*/
	void
	mchk_dump_mem(void data, size_t length, char *annotation)
	{
	unsigned long *ldata = data;
	size_t i;

	for (i = 0; (i * sizeof(*ldata)) < length; i++) {
	if (annotation && !annotation[i])
	annotation = NULL;
	printk("%s %08x: %016lx %s\n",
	err_print_prefix,
	(unsigned)(i * sizeof(*ldata)), ldata[i],
	annotation ? annotation[i] : "");
	}
	}

	void
	mchk_dump_logout_frame(struct el_common *mchk_header)
	{
	printk("%s -- Frame Header --\n"
	" Frame Size: %d (0x%x) bytes\n"
	" Flags: %s%s\n"
	" MCHK Code: 0x%x\n"
	" Frame Rev: %d\n"
	" Proc Offset: 0x%08x\n"
	" Sys Offset: 0x%08x\n"
	" -- Processor Region --\n",
	err_print_prefix,
	mchk_header->size, mchk_header->size,
	mchk_header->retry ? "RETRY " : "",
	mchk_header->err2 ? "SECOND_ERR " : "",
	mchk_header->code,
	mchk_header->frame_rev,
	mchk_header->proc_offset,
	mchk_header->sys_offset);

	mchk_dump_mem((void *)
	((unsigned long)mchk_header + mchk_header->proc_offset),
	mchk_header->sys_offset - mchk_header->proc_offset,
	NULL);

	printk("%s -- System Region --\n", err_print_prefix);
	mchk_dump_mem((void *)
	((unsigned long)mchk_header + mchk_header->sys_offset),
	mchk_header->size - mchk_header->sys_offset,
	NULL);
	printk("%s -- End of Frame --\n", err_print_prefix);
	}


	/*
	* Console Data Log
	*/
	/* Data */
	static struct el_subpacket_handler *subpacket_handler_list = NULL;
	static struct el_subpacket_annotation *subpacket_annotation_list = NULL;

	static struct el_subpacket *
	el_process_header_subpacket(struct el_subpacket *header)
	{
	union el_timestamp timestamp;
	char *name = "UNKNOWN EVENT";
	int packet_count = 0;
	int length = 0;

	if (header->class != EL_CLASS__HEADER) {
	printk("%s** Unexpected header CLASS %d TYPE %d, aborting\n",
	err_print_prefix,
	header->class, header->type);
	return NULL;
	}

	switch(header->type) {
	case EL_TYPE__HEADER__SYSTEM_ERROR_FRAME:
	name = "SYSTEM ERROR";
	length = header->by_type.sys_err.frame_length;
	packet_count =
	header->by_type.sys_err.frame_packet_count;
	timestamp.as_int = 0;
	break;
	case EL_TYPE__HEADER__SYSTEM_EVENT_FRAME:
	name = "SYSTEM EVENT";
	length = header->by_type.sys_event.frame_length;
	packet_count =
	header->by_type.sys_event.frame_packet_count;
	timestamp = header->by_type.sys_event.timestamp;
	break;
	case EL_TYPE__HEADER__HALT_FRAME:
	name = "ERROR HALT";
	length = header->by_type.err_halt.frame_length;
	packet_count =
	header->by_type.err_halt.frame_packet_count;
	timestamp = header->by_type.err_halt.timestamp;
	break;
	case EL_TYPE__HEADER__LOGOUT_FRAME:
	name = "LOGOUT FRAME";
	length = header->by_type.logout_header.frame_length;
	packet_count = 1;
	timestamp.as_int = 0;
	break;
	default: /* Unknown */
	printk("%s** Unknown header - CLASS %d TYPE %d, aborting\n",
	err_print_prefix,
	header->class, header->type);
	return NULL;
	}

	printk("%s*** %s:\n"
	" CLASS %d, TYPE %d\n",
	err_print_prefix,
	name,
	header->class, header->type);
	el_print_timestamp(&timestamp);

	/*
	* Process the subpackets
	*/
	el_process_subpackets(header, packet_count);

	/* return the next header */
	header = (struct el_subpacket *)
	((unsigned long)header + header->length + length);
	return header;
	}

	static struct el_subpacket *
	el_process_subpacket_reg(struct el_subpacket *header)
	{
	struct el_subpacket *next = NULL;
	struct el_subpacket_handler *h = subpacket_handler_list;

	for (; h && h->class != header->class; h = h->next);
	if (h) next = h->handler(header);

	return next;
	}

	void
	el_print_timestamp(union el_timestamp *timestamp)
	{
	if (timestamp->as_int)
	printk("%s TIMESTAMP: %d/%d/%02d %d:%02d:%0d\n",
	err_print_prefix,
	timestamp->b.month, timestamp->b.day,
	timestamp->b.year, timestamp->b.hour,
	timestamp->b.minute, timestamp->b.second);
	}

	void
	el_process_subpackets(struct el_subpacket *header, int packet_count)
	{
	struct el_subpacket *subpacket;
	int i;

	subpacket = (struct el_subpacket *)
	((unsigned long)header + header->length);

	for (i = 0; subpacket && i < packet_count; i++) {
	printk("%sPROCESSING SUBPACKET %d\n", err_print_prefix, i);
	subpacket = el_process_subpacket(subpacket);
	}
	}

	struct el_subpacket *
	el_process_subpacket(struct el_subpacket *header)
	{
	struct el_subpacket *next = NULL;

	switch(header->class) {
	case EL_CLASS__TERMINATION:
	/* Termination packet, there are no more */
	break;
	case EL_CLASS__HEADER:
	next = el_process_header_subpacket(header);
	break;
	default:
	if (NULL == (next = el_process_subpacket_reg(header))) {
	printk("%s** Unexpected header CLASS %d TYPE %d"
	" -- aborting.\n",
	err_print_prefix,
	header->class, header->type);
	}
	break;
	}

	return next;
	}

	void
	el_annotate_subpacket(struct el_subpacket *header)
	{
	struct el_subpacket_annotation *a;
	char **annotation = NULL;

	for (a = subpacket_annotation_list; a; a = a->next) {
	if (a->class == header->class &&
	a->type == header->type &&
	a->revision == header->revision) {
	/*
	* We found the annotation
	*/
	annotation = a->annotation;
	printk("%s %s\n", err_print_prefix, a->description);
	break;
	}
	}

	mchk_dump_mem(header, header->length, annotation);
	}

	static void __init
	cdl_process_console_data_log(int cpu, struct percpu_struct *pcpu)
	{
	struct el_subpacket header = (struct el_subpacket )
	(IDENT_ADDR \| pcpu->console_data_log_pa);
	int err;

	printk("%s***** CONSOLE DATA LOG FOR CPU %d. *****\n"
	"*** Error(s) were logged on a previous boot\n",
	err_print_prefix, cpu);

	for (err = 0; header && (header->class != EL_CLASS__TERMINATION); err++)
	header = el_process_subpacket(header);

	/* let the console know it's ok to clear the error(s) at restart */
	pcpu->console_data_log_pa = 0;

	printk("%s*** %d total error(s) logged\n"
	"** END OF CONSOLE DATA LOG FOR CPU %d **\n",
	err_print_prefix, err, cpu);
	}

	void __init
	cdl_check_console_data_log(void)
	{
	struct percpu_struct *pcpu;
	unsigned long cpu;

	for (cpu = 0; cpu < hwrpb->nr_processors; cpu++) {
	pcpu = (struct percpu_struct *)
	((unsigned long)hwrpb + hwrpb->processor_offset
	+ cpu * hwrpb->processor_size);
	if (pcpu->console_data_log_pa)
	cdl_process_console_data_log(cpu, pcpu);
	}

	}

	int __init
	cdl_register_subpacket_annotation(struct el_subpacket_annotation *new)
	{
	struct el_subpacket_annotation *a = subpacket_annotation_list;

	if (a == NULL) subpacket_annotation_list = new;
	else {
	for (; a->next != NULL; a = a->next) {
	if ((a->class == new->class && a->type == new->type) \|\|
	a == new) {
	printk("Attempted to re-register "
	"subpacket annotation\n");
	return -EINVAL;
	}
	}
	a->next = new;
	}
	new->next = NULL;

	return 0;
	}

	int __init
	cdl_register_subpacket_handler(struct el_subpacket_handler *new)
	{
	struct el_subpacket_handler *h = subpacket_handler_list;

	if (h == NULL) subpacket_handler_list = new;
	else {
	for (; h->next != NULL; h = h->next) {
	if (h->class == new->class \|\| h == new) {
	printk("Attempted to re-register "
	"subpacket handler\n");
	return -EINVAL;
	}
	}
	h->next = new;
	}
	new->next = NULL;

	return 0;
	}