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[PARISC] PDC_CHASSIS is implemented on all machines

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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>
This commit is contained in:
Thibaut Varene
2006-05-03 17:27:35 -06:00
committed by Kyle McMartin
parent c95f2e5f2f
commit 8ffaeaf42e
4 changed files with 107 additions and 22 deletions
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22
arch/parisc/kernel/firmware.c
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@@ -11,7 +11,7 @@
* Copyright 1999 The Puffin Group, (Alex deVries, David Kennedy)
* Copyright 2003 Grant Grundler <grundler parisc-linux org>
* Copyright 2003,2004 Ryan Bradetich <rbrad@parisc-linux.org>
* Copyright 2004 Thibaut VARENE <varenet@parisc-linux.org>
* Copyright 2004,2006 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
@@ -252,10 +252,8 @@ int pdc_pat_chassis_send_log(unsigned long state, unsigned long data)
#endif
/**
* pdc_chassis_disp - Updates display
* pdc_chassis_disp - Updates chassis code
* @retval: -1 on error, 0 on success
*
* Works on old PDC only (E class, others?)
*/
int pdc_chassis_disp(unsigned long disp)
{
@@ -268,6 +266,22 @@ int pdc_chassis_disp(unsigned long disp)
return retval;
}
/**
* pdc_chassis_warn - Fetches chassis warnings
* @retval: -1 on error, 0 on success
*/
int pdc_chassis_warn(unsigned long *warn)
{
int retval = 0;
spin_lock_irq(&pdc_lock);
retval = mem_pdc_call(PDC_CHASSIS, PDC_CHASSIS_WARN, __pa(pdc_result));
*warn = pdc_result[0];
spin_unlock_irq(&pdc_lock);
return retval;
}
/**
* pdc_coproc_cfg - To identify coprocessors attached to the processor.
* @pdc_coproc_info: Return buffer address.