2 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: src/sys/sys/devicestat.h,v 1.9 1999/12/29 04:24:39 peter Exp $
29 * $DragonFly: src/sys/sys/devicestat.h,v 1.2 2003/06/17 04:28:58 dillon Exp $
35 #include <sys/queue.h>
38 #define DEVSTAT_NAME_LEN 16
41 * ATTENTION: The devstat version below should be incremented any time a
42 * change is made in struct devstat, or any time a change is made in the
43 * enumerated types that struct devstat uses. (Only if those changes
44 * would require a recompile -- i.e. re-arranging the order of an
45 * enumerated type or something like that.) This version number is used by
46 * userland utilities to determine whether or not they are in sync with the
49 #define DEVSTAT_VERSION 4
52 * These flags specify which statistics features are supported or not
53 * supported by a particular device. The default is all statistics are
57 DEVSTAT_ALL_SUPPORTED
= 0x00,
58 DEVSTAT_NO_BLOCKSIZE
= 0x01,
59 DEVSTAT_NO_ORDERED_TAGS
= 0x02,
60 DEVSTAT_BS_UNAVAILABLE
= 0x04
61 } devstat_support_flags
;
64 DEVSTAT_NO_DATA
= 0x00,
68 } devstat_trans_flags
;
71 DEVSTAT_TAG_SIMPLE
= 0x00,
72 DEVSTAT_TAG_HEAD
= 0x01,
73 DEVSTAT_TAG_ORDERED
= 0x02,
74 DEVSTAT_TAG_NONE
= 0x03
78 DEVSTAT_PRIORITY_MIN
= 0x000,
79 DEVSTAT_PRIORITY_OTHER
= 0x020,
80 DEVSTAT_PRIORITY_PASS
= 0x030,
81 DEVSTAT_PRIORITY_FD
= 0x040,
82 DEVSTAT_PRIORITY_WFD
= 0x050,
83 DEVSTAT_PRIORITY_TAPE
= 0x060,
84 DEVSTAT_PRIORITY_CD
= 0x090,
85 DEVSTAT_PRIORITY_DISK
= 0x110,
86 DEVSTAT_PRIORITY_ARRAY
= 0x120,
87 DEVSTAT_PRIORITY_MAX
= 0xfff
91 * These types are intended to aid statistics gathering/display programs.
92 * The first 13 types (up to the 'target' flag) are identical numerically
93 * to the SCSI device type numbers. The next 3 types designate the device
94 * interface. Currently the choices are IDE, SCSI, and 'other'. The last
95 * flag specifies whether or not the given device is a passthrough device
96 * or not. If it is a passthrough device, the lower 4 bits specify which
97 * type of physical device lies under the passthrough device, and the next
98 * 4 bits specify the interface.
101 DEVSTAT_TYPE_DIRECT
= 0x000,
102 DEVSTAT_TYPE_SEQUENTIAL
= 0x001,
103 DEVSTAT_TYPE_PRINTER
= 0x002,
104 DEVSTAT_TYPE_PROCESSOR
= 0x003,
105 DEVSTAT_TYPE_WORM
= 0x004,
106 DEVSTAT_TYPE_CDROM
= 0x005,
107 DEVSTAT_TYPE_SCANNER
= 0x006,
108 DEVSTAT_TYPE_OPTICAL
= 0x007,
109 DEVSTAT_TYPE_CHANGER
= 0x008,
110 DEVSTAT_TYPE_COMM
= 0x009,
111 DEVSTAT_TYPE_ASC0
= 0x00a,
112 DEVSTAT_TYPE_ASC1
= 0x00b,
113 DEVSTAT_TYPE_STORARRAY
= 0x00c,
114 DEVSTAT_TYPE_ENCLOSURE
= 0x00d,
115 DEVSTAT_TYPE_FLOPPY
= 0x00e,
116 DEVSTAT_TYPE_MASK
= 0x00f,
117 DEVSTAT_TYPE_IF_SCSI
= 0x010,
118 DEVSTAT_TYPE_IF_IDE
= 0x020,
119 DEVSTAT_TYPE_IF_OTHER
= 0x030,
120 DEVSTAT_TYPE_IF_MASK
= 0x0f0,
121 DEVSTAT_TYPE_PASS
= 0x100
122 } devstat_type_flags
;
125 STAILQ_ENTRY(devstat
) dev_links
;
126 u_int32_t device_number
; /*
130 char device_name
[DEVSTAT_NAME_LEN
];
132 u_int64_t bytes_read
; /*
136 u_int64_t bytes_written
; /*
137 * Total bytes written
140 u_int64_t bytes_freed
; /*
144 u_int64_t num_reads
; /*
149 u_int64_t num_writes
; /*
154 u_int64_t num_frees
; /*
159 u_int64_t num_other
; /*
162 * don't read or write
165 int32_t busy_count
; /*
171 u_int32_t block_size
; /* Block size, bytes */
172 u_int64_t tag_types
[3]; /*
178 struct timeval dev_creation_time
; /*
179 * Time the device was
182 struct timeval busy_time
; /*
184 * time drive has spent
185 * processing requests.
187 struct timeval start_time
; /*
191 * start of the latest
194 struct timeval last_comp_time
; /*
200 devstat_support_flags flags
; /*
205 devstat_type_flags device_type
; /* Device type */
206 devstat_priority priority
; /* Controls list pos. */
211 void devstat_add_entry(struct devstat
*ds
, const char *dev_name
,
212 int unit_number
, u_int32_t block_size
,
213 devstat_support_flags flags
,
214 devstat_type_flags device_type
,
215 devstat_priority priority
);
216 void devstat_remove_entry(struct devstat
*ds
);
217 void devstat_start_transaction(struct devstat
*ds
);
218 void devstat_end_transaction(struct devstat
*ds
, u_int32_t bytes
,
219 devstat_tag_type tag_type
,
220 devstat_trans_flags flags
);
221 void devstat_end_transaction_buf(struct devstat
*ds
, struct buf
*);
224 #endif /* _DEVICESTAT_H */