diff options
Diffstat (limited to 'arch/parisc/kernel/pdc_chassis.c')
| -rw-r--r-- | arch/parisc/kernel/pdc_chassis.c | 114 |
1 files changed, 85 insertions, 29 deletions
diff --git a/arch/parisc/kernel/pdc_chassis.c b/arch/parisc/kernel/pdc_chassis.c index 2a01fe1bdc9..3e04242de5a 100644 --- a/arch/parisc/kernel/pdc_chassis.c +++ b/arch/parisc/kernel/pdc_chassis.c @@ -1,13 +1,12 @@ /* - * interfaces to log Chassis Codes via PDC (firmware) + * interfaces to Chassis Codes via PDC (firmware) * * Copyright (C) 2002 Laurent Canet <canetl@esiee.fr> - * Copyright (C) 2002-2004 Thibaut VARENE <varenet@parisc-linux.org> + * Copyright (C) 2002-2006 Thibaut VARENE <varenet@parisc-linux.org> * * 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. + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -17,6 +16,10 @@ * 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 + * + * TODO: poll chassis warns, trigger (configurable) machine shutdown when + * needed. + * Find out how to get Chassis warnings out of PAT boxes? */ #undef PDC_CHASSIS_DEBUG @@ -27,19 +30,22 @@ #endif #include <linux/init.h> +#include <linux/module.h> #include <linux/kernel.h> #include <linux/reboot.h> #include <linux/notifier.h> #include <linux/cache.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> #include <asm/pdc_chassis.h> #include <asm/processor.h> #include <asm/pdc.h> #include <asm/pdcpat.h> +#define PDC_CHASSIS_VER "0.05" #ifdef CONFIG_PDC_CHASSIS -static int pdc_chassis_old __read_mostly = 0; static unsigned int pdc_chassis_enabled __read_mostly = 1; @@ -65,7 +71,7 @@ __setup("pdcchassis=", pdc_chassis_setup); * Currently, only E class and A180 are known to work with this. * Inspired by Christoph Plattner */ - +#if 0 static void __init pdc_chassis_checkold(void) { switch(CPU_HVERSION) { @@ -74,7 +80,6 @@ static void __init pdc_chassis_checkold(void) case 0x482: /* E45 */ case 0x483: /* E55 */ case 0x516: /* A180 */ - pdc_chassis_old = 1; break; default: @@ -82,7 +87,7 @@ static void __init pdc_chassis_checkold(void) } DPRINTK(KERN_DEBUG "%s: pdc_chassis_checkold(); pdc_chassis_old = %d\n", __FILE__, pdc_chassis_old); } - +#endif /** * pdc_chassis_panic_event() - Called by the panic handler. @@ -132,29 +137,20 @@ static struct notifier_block pdc_chassis_reboot_block = { void __init parisc_pdc_chassis_init(void) { #ifdef CONFIG_PDC_CHASSIS - int handle = 0; if (likely(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 (unlikely(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); - } + printk(KERN_INFO "Enabling %s chassis codes support v%s\n", + is_pdc_pat() ? "PDC_PAT" : "regular", + PDC_CHASSIS_VER); + + /* initialize panic notifier chain */ + atomic_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 */ } @@ -215,9 +211,12 @@ int pdc_chassis_send_status(int message) } } else retval = -1; #else - if (unlikely(pdc_chassis_old)) { + if (1) { switch (message) { case PDC_CHASSIS_DIRECT_BSTART: + retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_INIT)); + break; + case PDC_CHASSIS_DIRECT_BCOMPLETE: retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_RUN)); break; @@ -244,3 +243,60 @@ int pdc_chassis_send_status(int message) #endif /* CONFIG_PDC_CHASSIS */ return retval; } + +#ifdef CONFIG_PDC_CHASSIS_WARN +#ifdef CONFIG_PROC_FS +static int pdc_chassis_warn_show(struct seq_file *m, void *v) +{ + unsigned long warn; + u32 warnreg; + + if (pdc_chassis_warn(&warn) != PDC_OK) + return -EIO; + + warnreg = (warn & 0xFFFFFFFF); + + if ((warnreg >> 24) & 0xFF) + seq_printf(m, "Chassis component failure! (eg fan or PSU): 0x%.2x\n", + (warnreg >> 24) & 0xFF); + + seq_printf(m, "Battery: %s\n", (warnreg & 0x04) ? "Low!" : "OK"); + seq_printf(m, "Temp low: %s\n", (warnreg & 0x02) ? "Exceeded!" : "OK"); + seq_printf(m, "Temp mid: %s\n", (warnreg & 0x01) ? "Exceeded!" : "OK"); + return 0; +} + +static int pdc_chassis_warn_open(struct inode *inode, struct file *file) +{ + return single_open(file, pdc_chassis_warn_show, NULL); +} + +static const struct file_operations pdc_chassis_warn_fops = { + .open = pdc_chassis_warn_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init pdc_chassis_create_procfs(void) +{ + unsigned long test; + int ret; + + ret = pdc_chassis_warn(&test); + if ((ret == PDC_BAD_PROC) || (ret == PDC_BAD_OPTION)) { + /* seems that some boxes (eg L1000) do not implement this */ + printk(KERN_INFO "Chassis warnings not supported.\n"); + return 0; + } + + printk(KERN_INFO "Enabling PDC chassis warnings support v%s\n", + PDC_CHASSIS_VER); + proc_create("chassis", 0400, NULL, &pdc_chassis_warn_fops); + return 0; +} + +__initcall(pdc_chassis_create_procfs); + +#endif /* CONFIG_PROC_FS */ +#endif /* CONFIG_PDC_CHASSIS_WARN */ |