diff options
Diffstat (limited to 'drivers/char/snsc.h')
| -rw-r--r-- | drivers/char/snsc.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/char/snsc.h b/drivers/char/snsc.h new file mode 100644 index 000000000..e8c52c882 --- /dev/null +++ b/drivers/char/snsc.h @@ -0,0 +1,92 @@ +/* + * SN Platform system controller communication support + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved. + */ + +/* + * This file contains macros and data types for communication with the + * system controllers in SGI SN systems. + */ + +#ifndef _SN_SYSCTL_H_ +#define _SN_SYSCTL_H_ + +#include <linux/types.h> +#include <linux/spinlock.h> +#include <linux/wait.h> +#include <linux/fs.h> +#include <linux/cdev.h> +#include <linux/semaphore.h> +#include <asm/sn/types.h> + +#define CHUNKSIZE 127 + +/* This structure is used to track an open subchannel. */ +struct subch_data_s { + nasid_t sd_nasid; /* node on which the subchannel was opened */ + int sd_subch; /* subchannel number */ + spinlock_t sd_rlock; /* monitor lock for rsv */ + spinlock_t sd_wlock; /* monitor lock for wsv */ + wait_queue_head_t sd_rq; /* wait queue for readers */ + wait_queue_head_t sd_wq; /* wait queue for writers */ + struct semaphore sd_rbs; /* semaphore for read buffer */ + struct semaphore sd_wbs; /* semaphore for write buffer */ + + char sd_rb[CHUNKSIZE]; /* read buffer */ + char sd_wb[CHUNKSIZE]; /* write buffer */ +}; + +struct sysctl_data_s { + struct cdev scd_cdev; /* Character device info */ + nasid_t scd_nasid; /* Node on which subchannels are opened. */ +}; + + +/* argument types */ +#define IR_ARG_INT 0x00 /* 4-byte integer (big-endian) */ +#define IR_ARG_ASCII 0x01 /* null-terminated ASCII string */ +#define IR_ARG_UNKNOWN 0x80 /* unknown data type. The low + * 7 bits will contain the data + * length. */ +#define IR_ARG_UNKNOWN_LENGTH_MASK 0x7f + + +/* system controller event codes */ +#define EV_CLASS_MASK 0xf000ul +#define EV_SEVERITY_MASK 0x0f00ul +#define EV_COMPONENT_MASK 0x00fful + +#define EV_CLASS_POWER 0x1000ul +#define EV_CLASS_FAN 0x2000ul +#define EV_CLASS_TEMP 0x3000ul +#define EV_CLASS_ENV 0x4000ul +#define EV_CLASS_TEST_FAULT 0x5000ul +#define EV_CLASS_TEST_WARNING 0x6000ul +#define EV_CLASS_PWRD_NOTIFY 0x8000ul + +/* ENV class codes */ +#define ENV_PWRDN_PEND 0x4101ul + +#define EV_SEVERITY_POWER_STABLE 0x0000ul +#define EV_SEVERITY_POWER_LOW_WARNING 0x0100ul +#define EV_SEVERITY_POWER_HIGH_WARNING 0x0200ul +#define EV_SEVERITY_POWER_HIGH_FAULT 0x0300ul +#define EV_SEVERITY_POWER_LOW_FAULT 0x0400ul + +#define EV_SEVERITY_FAN_STABLE 0x0000ul +#define EV_SEVERITY_FAN_WARNING 0x0100ul +#define EV_SEVERITY_FAN_FAULT 0x0200ul + +#define EV_SEVERITY_TEMP_STABLE 0x0000ul +#define EV_SEVERITY_TEMP_ADVISORY 0x0100ul +#define EV_SEVERITY_TEMP_CRITICAL 0x0200ul +#define EV_SEVERITY_TEMP_FAULT 0x0300ul + +void scdrv_event_init(struct sysctl_data_s *); + +#endif /* _SN_SYSCTL_H_ */ |