mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 09:45:07 +07:00
303 lines
8.0 KiB
C
303 lines
8.0 KiB
C
/*
|
|
* interfaces to Chassis Codes via PDC (firmware)
|
|
*
|
|
* Copyright (C) 2002 Laurent Canet <canetl@esiee.fr>
|
|
* 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
|
|
* 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
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* 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
|
|
#ifdef PDC_CHASSIS_DEBUG
|
|
#define DPRINTK(fmt, args...) printk(fmt, ## args)
|
|
#else
|
|
#define DPRINTK(fmt, args...)
|
|
#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 unsigned int pdc_chassis_enabled __read_mostly = 1;
|
|
|
|
|
|
/**
|
|
* pdc_chassis_setup() - Enable/disable pdc_chassis code at boot time.
|
|
* @str configuration param: 0 to disable chassis log
|
|
* @return 1
|
|
*/
|
|
|
|
static int __init pdc_chassis_setup(char *str)
|
|
{
|
|
/*panic_timeout = simple_strtoul(str, NULL, 0);*/
|
|
get_option(&str, &pdc_chassis_enabled);
|
|
return 1;
|
|
}
|
|
__setup("pdcchassis=", pdc_chassis_setup);
|
|
|
|
|
|
/**
|
|
* pdc_chassis_checkold() - Checks for old PDC_CHASSIS compatibility
|
|
* @pdc_chassis_old: 1 if old pdc chassis style
|
|
*
|
|
* 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) {
|
|
case 0x480: /* E25 */
|
|
case 0x481: /* E35 */
|
|
case 0x482: /* E45 */
|
|
case 0x483: /* E55 */
|
|
case 0x516: /* A180 */
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
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.
|
|
*
|
|
* As soon as a panic occurs, we should inform the PDC.
|
|
*/
|
|
|
|
static int pdc_chassis_panic_event(struct notifier_block *this,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
|
|
static struct notifier_block pdc_chassis_panic_block = {
|
|
.notifier_call = pdc_chassis_panic_event,
|
|
.priority = INT_MAX,
|
|
};
|
|
|
|
|
|
/**
|
|
* parisc_reboot_event() - Called by the reboot handler.
|
|
*
|
|
* As soon as a reboot occurs, we should inform the PDC.
|
|
*/
|
|
|
|
static int pdc_chassis_reboot_event(struct notifier_block *this,
|
|
unsigned long event, void *ptr)
|
|
{
|
|
pdc_chassis_send_status(PDC_CHASSIS_DIRECT_SHUTDOWN);
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
|
|
static struct notifier_block pdc_chassis_reboot_block = {
|
|
.notifier_call = pdc_chassis_reboot_event,
|
|
.priority = INT_MAX,
|
|
};
|
|
#endif /* CONFIG_PDC_CHASSIS */
|
|
|
|
|
|
/**
|
|
* parisc_pdc_chassis_init() - Called at boot time.
|
|
*/
|
|
|
|
void __init parisc_pdc_chassis_init(void)
|
|
{
|
|
#ifdef CONFIG_PDC_CHASSIS
|
|
if (likely(pdc_chassis_enabled)) {
|
|
DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__);
|
|
|
|
/* Let see if we have something to handle... */
|
|
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 */
|
|
}
|
|
|
|
|
|
/**
|
|
* pdc_chassis_send_status() - Sends a predefined message to the chassis,
|
|
* and changes the front panel LEDs according to the new system state
|
|
* @retval: PDC call return value.
|
|
*
|
|
* Only machines with 64 bits PDC PAT and those reported in
|
|
* pdc_chassis_checkold() are supported atm.
|
|
*
|
|
* returns 0 if no error, -1 if no supported PDC is present or invalid message,
|
|
* else returns the appropriate PDC error code.
|
|
*
|
|
* For a list of predefined messages, see asm-parisc/pdc_chassis.h
|
|
*/
|
|
|
|
int pdc_chassis_send_status(int message)
|
|
{
|
|
/* Maybe we should do that in an other way ? */
|
|
int retval = 0;
|
|
#ifdef CONFIG_PDC_CHASSIS
|
|
if (likely(pdc_chassis_enabled)) {
|
|
|
|
DPRINTK(KERN_DEBUG "%s: pdc_chassis_send_status(%d)\n", __FILE__, message);
|
|
|
|
#ifdef CONFIG_64BIT
|
|
if (is_pdc_pat()) {
|
|
switch(message) {
|
|
case PDC_CHASSIS_DIRECT_BSTART:
|
|
retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BSTART, PDC_CHASSIS_LSTATE_RUN_NORMAL);
|
|
break;
|
|
|
|
case PDC_CHASSIS_DIRECT_BCOMPLETE:
|
|
retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_BCOMPLETE, PDC_CHASSIS_LSTATE_RUN_NORMAL);
|
|
break;
|
|
|
|
case PDC_CHASSIS_DIRECT_SHUTDOWN:
|
|
retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_SHUTDOWN, PDC_CHASSIS_LSTATE_NONOS);
|
|
break;
|
|
|
|
case PDC_CHASSIS_DIRECT_PANIC:
|
|
retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_PANIC, PDC_CHASSIS_LSTATE_RUN_CRASHREC);
|
|
break;
|
|
|
|
case PDC_CHASSIS_DIRECT_LPMC:
|
|
retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_LPMC, PDC_CHASSIS_LSTATE_RUN_SYSINT);
|
|
break;
|
|
|
|
case PDC_CHASSIS_DIRECT_HPMC:
|
|
retval = pdc_pat_chassis_send_log(PDC_CHASSIS_PMSG_HPMC, PDC_CHASSIS_LSTATE_RUN_NCRIT);
|
|
break;
|
|
|
|
default:
|
|
retval = -1;
|
|
}
|
|
} else retval = -1;
|
|
#else
|
|
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;
|
|
|
|
case PDC_CHASSIS_DIRECT_SHUTDOWN:
|
|
retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_SHUT));
|
|
break;
|
|
|
|
case PDC_CHASSIS_DIRECT_HPMC:
|
|
case PDC_CHASSIS_DIRECT_PANIC:
|
|
retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_FLT));
|
|
break;
|
|
|
|
case PDC_CHASSIS_DIRECT_LPMC:
|
|
retval = pdc_chassis_disp(PDC_CHASSIS_DISP_DATA(OSTAT_WARN));
|
|
break;
|
|
|
|
default:
|
|
retval = -1;
|
|
}
|
|
} else retval = -1;
|
|
#endif /* CONFIG_64BIT */
|
|
} /* if (pdc_chassis_enabled) */
|
|
#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 */
|