[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>hifive-unleashed-5.1
Thibaut Varene
Kyle McMartin
parent
c95f2e5f2f
commit
8ffaeaf42e
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@ -11,7 +11,7 @@
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* Copyright 1999 The Puffin Group, (Alex deVries, David Kennedy)
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* Copyright 2003 Grant Grundler <grundler parisc-linux org>
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* Copyright 2003,2004 Ryan Bradetich <rbrad@parisc-linux.org>
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* Copyright 2004 Thibaut VARENE <varenet@parisc-linux.org>
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* Copyright 2004,2006 Thibaut VARENE <varenet@parisc-linux.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -252,10 +252,8 @@ int pdc_pat_chassis_send_log(unsigned long state, unsigned long data)
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#endif
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/**
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* pdc_chassis_disp - Updates display
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* pdc_chassis_disp - Updates chassis code
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* @retval: -1 on error, 0 on success
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*
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* Works on old PDC only (E class, others?)
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*/
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int pdc_chassis_disp(unsigned long disp)
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{
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@ -268,6 +266,22 @@ int pdc_chassis_disp(unsigned long disp)
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return retval;
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}
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/**
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* pdc_chassis_warn - Fetches chassis warnings
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* @retval: -1 on error, 0 on success
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*/
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int pdc_chassis_warn(unsigned long *warn)
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{
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int retval = 0;
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spin_lock_irq(&pdc_lock);
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retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result));
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*warn = pdc_result[0];
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spin_unlock_irq(&pdc_lock);
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return retval;
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}
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/**
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* pdc_coproc_cfg - To identify coprocessors attached to the processor.
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* @pdc_coproc_info: Return buffer address.
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@ -1,8 +1,8 @@
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/*
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* interfaces to log Chassis Codes via PDC (firmware)
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* interfaces to Chassis Codes via PDC (firmware)
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*
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* Copyright (C) 2002 Laurent Canet <canetl@esiee.fr>
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* Copyright (C) 2002-2004 Thibaut VARENE <varenet@parisc-linux.org>
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* Copyright (C) 2002-2006 Thibaut VARENE <varenet@parisc-linux.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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@ -16,6 +16,9 @@
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* TODO: poll chassis warns, trigger (configurable) machine shutdown when
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* needed.
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*/
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#undef PDC_CHASSIS_DEBUG
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@ -30,6 +33,7 @@
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#include <linux/reboot.h>
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#include <linux/notifier.h>
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#include <linux/cache.h>
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#include <linux/proc_fs.h>
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#include <asm/pdc_chassis.h>
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#include <asm/processor.h>
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@ -38,7 +42,6 @@
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#ifdef CONFIG_PDC_CHASSIS
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static int pdc_chassis_old __read_mostly = 0;
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static unsigned int pdc_chassis_enabled __read_mostly = 1;
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@ -64,7 +67,7 @@ __setup("pdcchassis=", pdc_chassis_setup);
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* Currently, only E class and A180 are known to work with this.
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* Inspired by Christoph Plattner
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*/
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#if 0
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static void __init pdc_chassis_checkold(void)
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{
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switch(CPU_HVERSION) {
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@ -73,7 +76,6 @@ static void __init pdc_chassis_checkold(void)
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case 0x482: /* E45 */
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case 0x483: /* E55 */
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case 0x516: /* A180 */
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pdc_chassis_old = 1;
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break;
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default:
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@ -81,7 +83,7 @@ static void __init pdc_chassis_checkold(void)
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}
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DPRINTK(KERN_DEBUG "%s: pdc_chassis_checkold(); pdc_chassis_old = %d\n", __FILE__, pdc_chassis_old);
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}
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#endif
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/**
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* pdc_chassis_panic_event() - Called by the panic handler.
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@ -136,14 +138,13 @@ void __init parisc_pdc_chassis_init(void)
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DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__);
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/* Let see if we have something to handle... */
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/* Check for PDC_PAT or old LED Panel */
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pdc_chassis_checkold();
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/* Check for PDC_PAT */
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if (is_pdc_pat()) {
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printk(KERN_INFO "Enabling PDC_PAT chassis codes support.\n");
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handle = 1;
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}
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else if (unlikely(pdc_chassis_old)) {
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printk(KERN_INFO "Enabling old style chassis LED panel support.\n");
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else {
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printk(KERN_INFO "Enabling regular chassis codes support.\n");
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handle = 1;
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}
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@ -215,9 +216,12 @@ int pdc_chassis_send_status(int message)
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}
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} else retval = -1;
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#else
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if (unlikely(pdc_chassis_old)) {
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if (1) {
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switch (message) {
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case PDC_CHASSIS_DIRECT_BSTART:
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retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_INIT));
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break;
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case PDC_CHASSIS_DIRECT_BCOMPLETE:
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retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_RUN));
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break;
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@ -244,3 +248,50 @@ int pdc_chassis_send_status(int message)
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#endif /* CONFIG_PDC_CHASSIS */
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return retval;
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}
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#ifdef CONFIG_PDC_CHASSIS_WARN
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#ifdef CONFIG_PROC_FS
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static int pdc_chassis_warn_pread(char *page, char **start, off_t off,
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int count, int *eof, void *data)
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{
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char *out = page;
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int len, ret;
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unsigned long warn;
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u32 warnreg;
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ret = pdc_chassis_warn(&warn);
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if (ret != PDC_OK)
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return -EIO;
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warnreg = (warn & 0xFFFFFFFF);
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if ((warnreg >> 24) & 0xFF)
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out += sprintf(out, "Chassis component failure! (eg fan or PSU): 0x%.2x\n", ((warnreg >> 24) & 0xFF));
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out += sprintf(out, "Battery: %s\n", (warnreg & 0x04) ? "Low!" : "OK");
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out += sprintf(out, "Temp low: %s\n", (warnreg & 0x02) ? "Exceeded!" : "OK");
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out += sprintf(out, "Temp mid: %s\n", (warnreg & 0x01) ? "Exceeded!" : "OK");
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len = out - page - off;
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if (len < count) {
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*eof = 1;
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if (len <= 0) return 0;
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} else {
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len = count;
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}
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*start = page + off;
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return len;
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}
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static int __init pdc_chassis_create_procfs(void)
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{
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printk(KERN_INFO "Enabling PDC chassis warnings support.\n");
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create_proc_read_entry("chassis", 0400, NULL, pdc_chassis_warn_pread,
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NULL);
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return 0;
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}
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__initcall(pdc_chassis_create_procfs);
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#endif /* CONFIG_PROC_FS */
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#endif /* CONFIG_PDC_CHASSIS_WARN */
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@ -140,18 +140,37 @@ config CHASSIS_LCD_LED
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If unsure, say Y.
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config PDC_CHASSIS
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bool "PDC chassis State Panel support"
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bool "PDC chassis state codes support"
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default y
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help
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Say Y here if you want to enable support for the LED State front
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panel as found on E class, and support for the GSP Virtual Front
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Panel (LED State and message logging) as found on high end
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servers such as A, L and N-class.
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This has nothing to do with Chassis LCD and LED support.
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Say Y here if you want to enable support for Chassis codes.
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That includes support for LED State front panel as found on E
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class, and support for the GSP Virtual Front Panel (LED State and
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message logging) as found on high end servers such as A, L and
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N-class.
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This driver will also display progress messages on LCD display,
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such as "INI", "RUN" and "FLT", and might thus clobber messages
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shown by the LED/LCD driver.
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This driver updates the state panel (LED and/or LCD) upon system
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state change (eg: boot, shutdown or panic).
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If unsure, say Y.
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config PDC_CHASSIS_WARN
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bool "PDC chassis warnings support"
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depends on PROC_FS
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default y
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help
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Say Y here if you want to enable support for Chassis warnings.
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This will add a proc entry '/proc/chassis' giving some information
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about the overall health state of the system.
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This includes NVRAM battery level, overtemp or failures such as
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fans or power units.
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If unsure, say Y.
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config PDC_STABLE
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tristate "PDC Stable Storage support"
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depends on SYSFS
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@ -719,6 +719,7 @@ void setup_pdc(void); /* in inventory.c */
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int pdc_add_valid(unsigned long address);
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int pdc_chassis_info(struct pdc_chassis_info *chassis_info, void *led_info, unsigned long len);
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int pdc_chassis_disp(unsigned long disp);
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int pdc_chassis_warn(unsigned long *warn);
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int pdc_coproc_cfg(struct pdc_coproc_cfg *pdc_coproc_info);
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int pdc_iodc_read(unsigned long *actcnt, unsigned long hpa, unsigned int index,
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void *iodc_data, unsigned int iodc_data_size);
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