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/*
* File: mca.c
* Purpose: SN specific MCA code.
*
* Copyright (C) 2001-2003 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <asm/mca.h>
#include <asm/sal.h>
#include <asm/sn/sn_sal.h>
/*
* Interval for calling SAL to poll for errors that do NOT cause error
* interrupts. SAL will raise a CPEI if any errors are present that
* need to be logged.
*/
#define CPEI_INTERVAL (5*HZ)
struct timer_list sn_cpei_timer;
void sn_init_cpei_timer(void);
/*
* print_hook
*
* This function is the callback routine that SAL calls to log error
* info for platform errors.
*/
static int
print_hook(const char *fmt, ...)
{
static int newline=1;
char buf[400], *p;
va_list args;
int len=0;
va_start(args, fmt);
if (newline) {
strcpy(buf, "+ ");
len += 2;
}
len += vsnprintf(buf+len, sizeof(buf)-len, fmt, args);
/* Prefix each line with "+ " to be consistent with mca.c. */
p = buf;
while ((p=strchr(p, '\n')) && *++p != '\0') {
memmove(p+2, p, 1+strlen(p));
strncpy(p, "+ ", 2);
len += 2;
}
newline = (p != 0);
va_end(args);
printk("%s", buf);
return len;
}
/*
* ia64_sn2_platform_plat_specific_err_print
*
* Called by the MCA handler to log platform-specific errors.
*/
void
ia64_sn2_platform_plat_specific_err_print(int header_len, int sect_len, u8 *p_data, prfunc_t prfunc)
{
ia64_sn_plat_specific_err_print(print_hook, p_data - sect_len);
}
static void
sn_cpei_handler(int irq, void *devid, struct pt_regs *regs)
{
/*
* this function's sole purpose is to call SAL when we receive
* a CE interrupt from SHUB or when the timer routine decides
* we need to call SAL to check for CEs.
*/
/* CALL SAL_LOG_CE */
ia64_sn_plat_cpei_handler();
}
static void
sn_cpei_timer_handler(unsigned long dummy) {
sn_cpei_handler(-1, NULL, NULL);
mod_timer(&sn_cpei_timer, jiffies + CPEI_INTERVAL);
}
void
sn_init_cpei_timer() {
sn_cpei_timer.expires = jiffies + CPEI_INTERVAL;
sn_cpei_timer.function = sn_cpei_timer_handler;
add_timer(&sn_cpei_timer);
}
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