| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * SN Platform system controller communication support |
| 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU General Public |
| 5 | * License. See the file "COPYING" in the main directory of this archive |
| 6 | * for more details. |
| 7 | * |
| 8 | * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved. |
| 9 | */ |
| 10 | |
| 11 | /* |
| 12 | * This file contains macros and data types for communication with the |
| 13 | * system controllers in SGI SN systems. |
| 14 | */ |
| 15 | |
| 16 | #ifndef _SN_SYSCTL_H_ |
| 17 | #define _SN_SYSCTL_H_ |
| 18 | |
| 19 | #include <linux/types.h> |
| 20 | #include <linux/spinlock.h> |
| 21 | #include <linux/wait.h> |
| 22 | #include <linux/fs.h> |
| 23 | #include <linux/cdev.h> |
| 24 | #include <linux/semaphore.h> |
| 25 | #include <asm/sn/types.h> |
| 26 | |
| 27 | #define CHUNKSIZE 127 |
| 28 | |
| 29 | /* This structure is used to track an open subchannel. */ |
| 30 | struct subch_data_s { |
| 31 | nasid_t sd_nasid; /* node on which the subchannel was opened */ |
| 32 | int sd_subch; /* subchannel number */ |
| 33 | spinlock_t sd_rlock; /* monitor lock for rsv */ |
| 34 | spinlock_t sd_wlock; /* monitor lock for wsv */ |
| 35 | wait_queue_head_t sd_rq; /* wait queue for readers */ |
| 36 | wait_queue_head_t sd_wq; /* wait queue for writers */ |
| 37 | struct semaphore sd_rbs; /* semaphore for read buffer */ |
| 38 | struct semaphore sd_wbs; /* semaphore for write buffer */ |
| 39 | |
| 40 | char sd_rb[CHUNKSIZE]; /* read buffer */ |
| 41 | char sd_wb[CHUNKSIZE]; /* write buffer */ |
| 42 | }; |
| 43 | |
| 44 | struct sysctl_data_s { |
| 45 | struct cdev scd_cdev; /* Character device info */ |
| 46 | nasid_t scd_nasid; /* Node on which subchannels are opened. */ |
| 47 | }; |
| 48 | |
| 49 | |
| 50 | /* argument types */ |
| 51 | #define IR_ARG_INT 0x00 /* 4-byte integer (big-endian) */ |
| 52 | #define IR_ARG_ASCII 0x01 /* null-terminated ASCII string */ |
| 53 | #define IR_ARG_UNKNOWN 0x80 /* unknown data type. The low |
| 54 | * 7 bits will contain the data |
| 55 | * length. */ |
| 56 | #define IR_ARG_UNKNOWN_LENGTH_MASK 0x7f |
| 57 | |
| 58 | |
| 59 | /* system controller event codes */ |
| 60 | #define EV_CLASS_MASK 0xf000ul |
| 61 | #define EV_SEVERITY_MASK 0x0f00ul |
| 62 | #define EV_COMPONENT_MASK 0x00fful |
| 63 | |
| 64 | #define EV_CLASS_POWER 0x1000ul |
| 65 | #define EV_CLASS_FAN 0x2000ul |
| 66 | #define EV_CLASS_TEMP 0x3000ul |
| 67 | #define EV_CLASS_ENV 0x4000ul |
| 68 | #define EV_CLASS_TEST_FAULT 0x5000ul |
| 69 | #define EV_CLASS_TEST_WARNING 0x6000ul |
| 70 | #define EV_CLASS_PWRD_NOTIFY 0x8000ul |
| 71 | |
| 72 | /* ENV class codes */ |
| 73 | #define ENV_PWRDN_PEND 0x4101ul |
| 74 | |
| 75 | #define EV_SEVERITY_POWER_STABLE 0x0000ul |
| 76 | #define EV_SEVERITY_POWER_LOW_WARNING 0x0100ul |
| 77 | #define EV_SEVERITY_POWER_HIGH_WARNING 0x0200ul |
| 78 | #define EV_SEVERITY_POWER_HIGH_FAULT 0x0300ul |
| 79 | #define EV_SEVERITY_POWER_LOW_FAULT 0x0400ul |
| 80 | |
| 81 | #define EV_SEVERITY_FAN_STABLE 0x0000ul |
| 82 | #define EV_SEVERITY_FAN_WARNING 0x0100ul |
| 83 | #define EV_SEVERITY_FAN_FAULT 0x0200ul |
| 84 | |
| 85 | #define EV_SEVERITY_TEMP_STABLE 0x0000ul |
| 86 | #define EV_SEVERITY_TEMP_ADVISORY 0x0100ul |
| 87 | #define EV_SEVERITY_TEMP_CRITICAL 0x0200ul |
| 88 | #define EV_SEVERITY_TEMP_FAULT 0x0300ul |
| 89 | |
| 90 | void scdrv_event_init(struct sysctl_data_s *); |
| 91 | |
| 92 | #endif /* _SN_SYSCTL_H_ */ |