2 * interfaces to log Chassis Codes via PDC (firmware)
4 * Copyright (C) 2002 Laurent Canet <canetl@esiee.fr>
5 * Copyright (C) 2002-2003 Thibaut Varene <varenet@esiee.fr>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #undef PDC_CHASSIS_DEBUG
23 #ifdef PDC_CHASSIS_DEBUG
24 #define DPRINTK(fmt, args...) printk(fmt, ## args)
26 #define DPRINTK(fmt, args...)
29 #include <linux/init.h>
30 #include <linux/kernel.h>
31 #include <linux/reboot.h>
32 #include <linux/notifier.h>
34 #include <asm/pdc_chassis.h>
35 #include <asm/processor.h>
38 #ifdef CONFIG_PDC_CHASSIS
39 static int pdc_chassis_old = 0;
43 * pdc_chassis_checkold() - Checks for old PDC_CHASSIS compatibility
44 * @pdc_chassis_old: 1 if old pdc chassis style
46 * Currently, only E class and A180 are known to work with this.
47 * Inspired by Christoph Plattner
50 static void __init pdc_chassis_checkold(void)
52 switch(CPU_HVERSION) {
57 case 0x516: /* A180 */
64 DPRINTK(KERN_DEBUG "%s: pdc_chassis_checkold(); pdc_chassis_old = %d\n", __FILE__, pdc_chassis_old);
69 * pdc_chassis_panic_event() - Called by the panic handler.
71 * As soon as a panic occurs, we should inform the PDC.
74 static int pdc_chassis_panic_event(struct notifier_block *this,
75 unsigned long event, void *ptr)
77 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
82 static struct notifier_block pdc_chassis_panic_block = {
83 .notifier_call = pdc_chassis_panic_event,
89 * parisc_reboot_event() - Called by the reboot handler.
91 * As soon as a reboot occurs, we should inform the PDC.
94 static int pdc_chassis_reboot_event(struct notifier_block *this,
95 unsigned long event, void *ptr)
97 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_SHUTDOWN);
102 static struct notifier_block pdc_chassis_reboot_block = {
103 .notifier_call = pdc_chassis_reboot_event,
106 #endif /* CONFIG_PDC_CHASSIS */
110 * parisc_pdc_chassis_init() - Called at boot time.
113 void __init parisc_pdc_chassis_init(void)
115 #ifdef CONFIG_PDC_CHASSIS
118 DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__);
120 /* Let see if we have something to handle... */
121 /* Check for PDC_PAT or old LED Panel */
122 pdc_chassis_checkold();
124 #ifdef __LP64__ /* see pdc_chassis_send_status() */
125 printk(KERN_INFO "Enabling PDC_PAT chassis codes support.\n");
127 #endif /* __LP64__ */
129 else if (pdc_chassis_old) {
130 printk(KERN_INFO "Enabling old style chassis LED panel support.\n");
135 /* initialize panic notifier chain */
136 notifier_chain_register(&panic_notifier_list, &pdc_chassis_panic_block);
138 /* initialize reboot notifier chain */
139 register_reboot_notifier(&pdc_chassis_reboot_block);
141 #endif /* CONFIG_PDC_CHASSIS */
146 * pdc_chassis_send_status() - Sends a predefined message to the chassis,
147 * and changes the front panel LEDs according to the new system state
148 * @retval: PDC call return value.
150 * Only machines with 64 bits PDC PAT and those reported in
151 * pdc_chassis_checkold() are supported atm.
153 * returns 0 if no error, -1 if no supported PDC is present or invalid message,
154 * else returns the appropriate PDC error code.
156 * For a list of predefined messages, see asm-parisc/pdc_chassis.h
159 int pdc_chassis_send_status(int message)
161 /* Maybe we should do that in an other way ? */
163 #ifdef CONFIG_PDC_CHASSIS
164 DPRINTK(KERN_DEBUG "%s: pdc_chassis_send_status(%d)\n", __FILE__, message);
166 #ifdef __LP64__ /* pdc_pat_chassis_send_log is defined only when #ifdef __LP64__ */
169 case PDC_CHASSIS_DIRECT_BSTART:
170 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BSTART, PDC_CHASSIS_LSTATE_RUN_NORMAL);
173 case PDC_CHASSIS_DIRECT_BCOMPLETE:
174 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BCOMPLETE, PDC_CHASSIS_LSTATE_RUN_NORMAL);
177 case PDC_CHASSIS_DIRECT_SHUTDOWN:
178 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_SHUTDOWN, PDC_CHASSIS_LSTATE_NONOS);
181 case PDC_CHASSIS_DIRECT_PANIC:
182 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_PANIC, PDC_CHASSIS_LSTATE_RUN_CRASHREC);
185 case PDC_CHASSIS_DIRECT_LPMC:
186 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_LPMC, PDC_CHASSIS_LSTATE_RUN_SYSINT);
189 case PDC_CHASSIS_DIRECT_HPMC:
190 retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_HPMC, PDC_CHASSIS_LSTATE_RUN_NCRIT);
198 if (pdc_chassis_old) {
200 case PDC_CHASSIS_DIRECT_BSTART:
201 case PDC_CHASSIS_DIRECT_BCOMPLETE:
202 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_RUN));
205 case PDC_CHASSIS_DIRECT_SHUTDOWN:
206 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_SHUT));
209 case PDC_CHASSIS_DIRECT_HPMC:
210 case PDC_CHASSIS_DIRECT_PANIC:
211 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_FLT));
214 case PDC_CHASSIS_DIRECT_LPMC:
215 retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_WARN));
222 #endif /* __LP64__ */
223 #endif /* CONFIG_PDC_CHASSIS */