28ff6b9b2f
Handle system controller power down pending events on SN systems. This allows the system to gracefully shutdown before the system controller removes power due to an adverse environmental condition. Signed-off-by: Aaron Young <ayoung@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/*
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* SN Platform system controller communication support
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
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*/
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/*
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* This file contains macros and data types for communication with the
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* system controllers in SGI SN systems.
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*/
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#ifndef _SN_SYSCTL_H_
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#define _SN_SYSCTL_H_
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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#include <linux/kobject.h>
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#include <linux/fs.h>
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#include <linux/cdev.h>
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#include <asm/sn/types.h>
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#include <asm/semaphore.h>
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#define CHUNKSIZE 127
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/* This structure is used to track an open subchannel. */
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struct subch_data_s {
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nasid_t sd_nasid; /* node on which the subchannel was opened */
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int sd_subch; /* subchannel number */
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spinlock_t sd_rlock; /* monitor lock for rsv */
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spinlock_t sd_wlock; /* monitor lock for wsv */
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wait_queue_head_t sd_rq; /* wait queue for readers */
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wait_queue_head_t sd_wq; /* wait queue for writers */
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struct semaphore sd_rbs; /* semaphore for read buffer */
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struct semaphore sd_wbs; /* semaphore for write buffer */
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char sd_rb[CHUNKSIZE]; /* read buffer */
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char sd_wb[CHUNKSIZE]; /* write buffer */
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};
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struct sysctl_data_s {
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struct cdev scd_cdev; /* Character device info */
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nasid_t scd_nasid; /* Node on which subchannels are opened. */
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};
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/* argument types */
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#define IR_ARG_INT 0x00 /* 4-byte integer (big-endian) */
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#define IR_ARG_ASCII 0x01 /* null-terminated ASCII string */
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#define IR_ARG_UNKNOWN 0x80 /* unknown data type. The low
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* 7 bits will contain the data
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* length. */
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#define IR_ARG_UNKNOWN_LENGTH_MASK 0x7f
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/* system controller event codes */
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#define EV_CLASS_MASK 0xf000ul
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#define EV_SEVERITY_MASK 0x0f00ul
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#define EV_COMPONENT_MASK 0x00fful
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#define EV_CLASS_POWER 0x1000ul
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#define EV_CLASS_FAN 0x2000ul
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#define EV_CLASS_TEMP 0x3000ul
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#define EV_CLASS_ENV 0x4000ul
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#define EV_CLASS_TEST_FAULT 0x5000ul
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#define EV_CLASS_TEST_WARNING 0x6000ul
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#define EV_CLASS_PWRD_NOTIFY 0x8000ul
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/* ENV class codes */
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#define ENV_PWRDN_PEND 0x4101ul
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#define EV_SEVERITY_POWER_STABLE 0x0000ul
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#define EV_SEVERITY_POWER_LOW_WARNING 0x0100ul
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#define EV_SEVERITY_POWER_HIGH_WARNING 0x0200ul
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#define EV_SEVERITY_POWER_HIGH_FAULT 0x0300ul
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#define EV_SEVERITY_POWER_LOW_FAULT 0x0400ul
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#define EV_SEVERITY_FAN_STABLE 0x0000ul
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#define EV_SEVERITY_FAN_WARNING 0x0100ul
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#define EV_SEVERITY_FAN_FAULT 0x0200ul
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#define EV_SEVERITY_TEMP_STABLE 0x0000ul
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#define EV_SEVERITY_TEMP_ADVISORY 0x0100ul
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#define EV_SEVERITY_TEMP_CRITICAL 0x0200ul
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#define EV_SEVERITY_TEMP_FAULT 0x0300ul
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void scdrv_event_init(struct sysctl_data_s *);
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#endif /* _SN_SYSCTL_H_ */
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