diff options
author | Thibaut Varene <varenet@parisc-linux.org> | 2006-05-03 23:27:35 (GMT) |
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committer | Kyle McMartin <kyle@hera.kernel.org> | 2006-06-27 23:28:37 (GMT) |
commit | 8ffaeaf42e91930888df09d696a8a6ebe056d0e0 (patch) | |
tree | 7b1785ccab10b69c06f91184e382f8d96b1cc04d /arch/parisc/kernel/pdc_chassis.c | |
parent | c95f2e5f2f6f61d734a025414c9eb81872a5c831 (diff) | |
download | linux-fsl-qoriq-8ffaeaf42e91930888df09d696a8a6ebe056d0e0.tar.xz |
[PARISC] PDC_CHASSIS is implemented on all machines
This patch removes a limitation of the original code, so that CHASSIS
codes can be sent to all machines. On machines with a LCD panel, this
code displays "INI" during bootup, "RUN" when the system is booted and
running, "FLT" when a panic occurs, etc.
This part of the code can be enabled/disabled through CONFIG_PDC_CHASSIS
This patch also adds minimalistic support for Chassis warnings, through
a proc entry '/proc/chassis', which will reflect the warnings status (PSU
or fans failure when they happen, NVRAM battery level and temperature
thresholds overflows).
This part of the code can be enabled/disabled through CONFIG_PDC_CHASSIS_WARN
Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc/kernel/pdc_chassis.c')
-rw-r--r-- | arch/parisc/kernel/pdc_chassis.c | 73 |
1 files changed, 62 insertions, 11 deletions
diff --git a/arch/parisc/kernel/pdc_chassis.c b/arch/parisc/kernel/pdc_chassis.c index a45e2e2..51e86c0 100644 --- a/arch/parisc/kernel/pdc_chassis.c +++ b/arch/parisc/kernel/pdc_chassis.c @@ -1,8 +1,8 @@ /* - * 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, version 2, as @@ -16,6 +16,9 @@ * 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. */ #undef PDC_CHASSIS_DEBUG @@ -30,6 +33,7 @@ #include <linux/reboot.h> #include <linux/notifier.h> #include <linux/cache.h> +#include <linux/proc_fs.h> #include <asm/pdc_chassis.h> #include <asm/processor.h> @@ -38,7 +42,6 @@ #ifdef CONFIG_PDC_CHASSIS -static int pdc_chassis_old __read_mostly = 0; static unsigned int pdc_chassis_enabled __read_mostly = 1; @@ -64,7 +67,7 @@ __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) { @@ -73,7 +76,6 @@ static void __init pdc_chassis_checkold(void) case 0x482: /* E45 */ case 0x483: /* E55 */ case 0x516: /* A180 */ - pdc_chassis_old = 1; break; default: @@ -81,7 +83,7 @@ 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. @@ -136,14 +138,13 @@ void __init parisc_pdc_chassis_init(void) 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(); + /* Check for PDC_PAT */ 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"); + else { + printk(KERN_INFO "Enabling regular chassis codes support.\n"); handle = 1; } @@ -215,9 +216,12 @@ 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 +248,50 @@ 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_pread(char *page, char **start, off_t off, + int count, int *eof, void *data) +{ + char *out = page; + int len, ret; + unsigned long warn; + u32 warnreg; + + ret = pdc_chassis_warn(&warn); + if (ret != PDC_OK) + return -EIO; + + warnreg = (warn & 0xFFFFFFFF); + + if ((warnreg >> 24) & 0xFF) + out += sprintf(out, "Chassis component failure! (eg fan or PSU): 0x%.2x\n", ((warnreg >> 24) & 0xFF)); + + out += sprintf(out, "Battery: %s\n", (warnreg & 0x04) ? "Low!" : "OK"); + out += sprintf(out, "Temp low: %s\n", (warnreg & 0x02) ? "Exceeded!" : "OK"); + out += sprintf(out, "Temp mid: %s\n", (warnreg & 0x01) ? "Exceeded!" : "OK"); + + len = out - page - off; + if (len < count) { + *eof = 1; + if (len <= 0) return 0; + } else { + len = count; + } + *start = page + off; + return len; +} + +static int __init pdc_chassis_create_procfs(void) +{ + printk(KERN_INFO "Enabling PDC chassis warnings support.\n"); + create_proc_read_entry("chassis", 0400, NULL, pdc_chassis_warn_pread, + NULL); + return 0; +} + +__initcall(pdc_chassis_create_procfs); + +#endif /* CONFIG_PROC_FS */ +#endif /* CONFIG_PDC_CHASSIS_WARN */ |