/*  *    interfaces to log Chassis Codes via PDC (firmware) * *    Copyright (C) 2002 Laurent Canet <canetl@esiee.fr> *    Copyright (C) 2002-2004 Thibaut VARENE <varenet@esiee.fr> * *    This program is free software; you can redistribute it and/or modify *    it under the terms of the GNU General Public License as published by *    the Free Software Foundation; either version 2 of the License, or *    (at your option) any later version. * *    This program is distributed in the hope that it will be useful, *    but WITHOUT ANY WARRANTY; without even the implied warranty of *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *    GNU General Public License for more details. * *    You should have received a copy of the GNU General Public License *    along with this program; if not, write to the Free Software *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */#undef PDC_CHASSIS_DEBUG#ifdef PDC_CHASSIS_DEBUG#define DPRINTK(fmt, args...)	printk(fmt, ## args)#else#define DPRINTK(fmt, args...)#endif#include <linux/init.h>#include <linux/kernel.h>#include <linux/reboot.h>#include <linux/notifier.h>#include <asm/pdc_chassis.h>#include <asm/processor.h>#include <asm/pdc.h>#include <asm/pdcpat.h>#ifdef CONFIG_PDC_CHASSISstatic int pdc_chassis_old = 0;	static unsigned int pdc_chassis_enabled = 1;/** * pdc_chassis_setup() - Enable/disable pdc_chassis code at boot time. * @str configuration param: 0 to disable chassis log * @return 1 */ static int __init pdc_chassis_setup(char *str){	/*panic_timeout = simple_strtoul(str, NULL, 0);*/	get_option(&str, &pdc_chassis_enabled);	return 1;}__setup("pdcchassis=", pdc_chassis_setup);/**  * pdc_chassis_checkold() - Checks for old PDC_CHASSIS compatibility * @pdc_chassis_old: 1 if old pdc chassis style *  * Currently, only E class and A180 are known to work with this. * Inspired by Christoph Plattner */static void __init pdc_chassis_checkold(void){	switch(CPU_HVERSION) {		case 0x480:		/* E25 */		case 0x481:		/* E35 */		case 0x482:		/* E45 */		case 0x483:		/* E55 */		case 0x516:		/* A180 */			pdc_chassis_old = 1;			break;		default:			break;	}	DPRINTK(KERN_DEBUG "%s: pdc_chassis_checkold(); pdc_chassis_old = %d\n", __FILE__, pdc_chassis_old);}/** * pdc_chassis_panic_event() - Called by the panic handler. * * As soon as a panic occurs, we should inform the PDC. */static int pdc_chassis_panic_event(struct notifier_block *this,		        unsigned long event, void *ptr){	pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);		return NOTIFY_DONE;}   static struct notifier_block pdc_chassis_panic_block = {	.notifier_call = pdc_chassis_panic_event,	.priority = INT_MAX,};/** * parisc_reboot_event() - Called by the reboot handler. * * As soon as a reboot occurs, we should inform the PDC. */static int pdc_chassis_reboot_event(struct notifier_block *this,		        unsigned long event, void *ptr){	pdc_chassis_send_status(PDC_CHASSIS_DIRECT_SHUTDOWN);		return NOTIFY_DONE;}   static struct notifier_block pdc_chassis_reboot_block = {	.notifier_call = pdc_chassis_reboot_event,	.priority = INT_MAX,};#endif /* CONFIG_PDC_CHASSIS *//** * parisc_pdc_chassis_init() - Called at boot time. */void __init parisc_pdc_chassis_init(void){#ifdef CONFIG_PDC_CHASSIS	int handle = 0;	if (pdc_chassis_enabled) {		DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__);		/* Let see if we have something to handle... */		/* Check for PDC_PAT or old LED Panel */		pdc_chassis_checkold();		if (is_pdc_pat()) {			printk(KERN_INFO "Enabling PDC_PAT chassis codes support.\n");			handle = 1;		}		else if (pdc_chassis_old) {			printk(KERN_INFO "Enabling old style chassis LED panel support.\n");			handle = 1;		}		if (handle) {			/* initialize panic notifier chain */			notifier_chain_register(&panic_notifier_list, &pdc_chassis_panic_block);			/* initialize reboot notifier chain */			register_reboot_notifier(&pdc_chassis_reboot_block);		}	}#endif /* CONFIG_PDC_CHASSIS */}/**  * pdc_chassis_send_status() - Sends a predefined message to the chassis, * and changes the front panel LEDs according to the new system state * @retval: PDC call return value. * * Only machines with 64 bits PDC PAT and those reported in * pdc_chassis_checkold() are supported atm. *  * returns 0 if no error, -1 if no supported PDC is present or invalid message, * else returns the appropriate PDC error code. *  * For a list of predefined messages, see asm-parisc/pdc_chassis.h */int pdc_chassis_send_status(int message){	/* Maybe we should do that in an other way ? */	int retval = 0;#ifdef CONFIG_PDC_CHASSIS	if (pdc_chassis_enabled) {		DPRINTK(KERN_DEBUG "%s: pdc_chassis_send_status(%d)\n", __FILE__, message);#ifdef CONFIG_PARISC64		if (is_pdc_pat()) {			switch(message) {				case PDC_CHASSIS_DIRECT_BSTART:					retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BSTART, PDC_CHASSIS_LSTATE_RUN_NORMAL);					break;				case PDC_CHASSIS_DIRECT_BCOMPLETE:					retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BCOMPLETE, PDC_CHASSIS_LSTATE_RUN_NORMAL);					break;				case PDC_CHASSIS_DIRECT_SHUTDOWN:					retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_SHUTDOWN, PDC_CHASSIS_LSTATE_NONOS);					break;				case PDC_CHASSIS_DIRECT_PANIC:					retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_PANIC, PDC_CHASSIS_LSTATE_RUN_CRASHREC);					break;				case PDC_CHASSIS_DIRECT_LPMC:					retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_LPMC, PDC_CHASSIS_LSTATE_RUN_SYSINT);					break;				case PDC_CHASSIS_DIRECT_HPMC:					retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_HPMC, PDC_CHASSIS_LSTATE_RUN_NCRIT);					break;				default:					retval = -1;			}		} else retval = -1;#else		if (pdc_chassis_old) {			switch (message) {				case PDC_CHASSIS_DIRECT_BSTART:				case PDC_CHASSIS_DIRECT_BCOMPLETE:					retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_RUN));					break;				case PDC_CHASSIS_DIRECT_SHUTDOWN:					retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_SHUT));					break;				case PDC_CHASSIS_DIRECT_HPMC:				case PDC_CHASSIS_DIRECT_PANIC:					retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_FLT));					break;				case PDC_CHASSIS_DIRECT_LPMC:					retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_WARN));					break;				default:					retval = -1;			}		} else retval = -1;#endif /* CONFIG_PARISC64 */	}	/* if (pdc_chassis_enabled) */#endif /* CONFIG_PDC_CHASSIS */	return retval;}