diff options
author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-08-01 14:42:05 -0400 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-08-01 14:42:05 -0400 |
commit | c6557e7f2b6ae76a44653d38f835174074c42e05 (patch) | |
tree | da619a76b309cb1cd259d082af768a83cfcd6d52 /arch/s390/include/asm/dasd.h | |
parent | ab4227cb2d936886069ef1056c02500d05beb15d (diff) |
[S390] move include/asm-s390 to arch/s390/include/asm
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/dasd.h')
-rw-r--r-- | arch/s390/include/asm/dasd.h | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/arch/s390/include/asm/dasd.h b/arch/s390/include/asm/dasd.h new file mode 100644 index 000000000000..3f002e13d024 --- /dev/null +++ b/arch/s390/include/asm/dasd.h | |||
@@ -0,0 +1,270 @@ | |||
1 | /* | ||
2 | * File...........: linux/drivers/s390/block/dasd.c | ||
3 | * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> | ||
4 | * Bugreports.to..: <Linux390@de.ibm.com> | ||
5 | * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 | ||
6 | * | ||
7 | * This file is the interface of the DASD device driver, which is exported to user space | ||
8 | * any future changes wrt the API will result in a change of the APIVERSION reported | ||
9 | * to userspace by the DASDAPIVER-ioctl | ||
10 | * | ||
11 | */ | ||
12 | |||
13 | #ifndef DASD_H | ||
14 | #define DASD_H | ||
15 | #include <linux/ioctl.h> | ||
16 | |||
17 | #define DASD_IOCTL_LETTER 'D' | ||
18 | |||
19 | #define DASD_API_VERSION 6 | ||
20 | |||
21 | /* | ||
22 | * struct dasd_information2_t | ||
23 | * represents any data about the device, which is visible to userspace. | ||
24 | * including foramt and featueres. | ||
25 | */ | ||
26 | typedef struct dasd_information2_t { | ||
27 | unsigned int devno; /* S/390 devno */ | ||
28 | unsigned int real_devno; /* for aliases */ | ||
29 | unsigned int schid; /* S/390 subchannel identifier */ | ||
30 | unsigned int cu_type : 16; /* from SenseID */ | ||
31 | unsigned int cu_model : 8; /* from SenseID */ | ||
32 | unsigned int dev_type : 16; /* from SenseID */ | ||
33 | unsigned int dev_model : 8; /* from SenseID */ | ||
34 | unsigned int open_count; | ||
35 | unsigned int req_queue_len; | ||
36 | unsigned int chanq_len; /* length of chanq */ | ||
37 | char type[4]; /* from discipline.name, 'none' for unknown */ | ||
38 | unsigned int status; /* current device level */ | ||
39 | unsigned int label_block; /* where to find the VOLSER */ | ||
40 | unsigned int FBA_layout; /* fixed block size (like AIXVOL) */ | ||
41 | unsigned int characteristics_size; | ||
42 | unsigned int confdata_size; | ||
43 | char characteristics[64]; /* from read_device_characteristics */ | ||
44 | char configuration_data[256]; /* from read_configuration_data */ | ||
45 | unsigned int format; /* format info like formatted/cdl/ldl/... */ | ||
46 | unsigned int features; /* dasd features like 'ro',... */ | ||
47 | unsigned int reserved0; /* reserved for further use ,... */ | ||
48 | unsigned int reserved1; /* reserved for further use ,... */ | ||
49 | unsigned int reserved2; /* reserved for further use ,... */ | ||
50 | unsigned int reserved3; /* reserved for further use ,... */ | ||
51 | unsigned int reserved4; /* reserved for further use ,... */ | ||
52 | unsigned int reserved5; /* reserved for further use ,... */ | ||
53 | unsigned int reserved6; /* reserved for further use ,... */ | ||
54 | unsigned int reserved7; /* reserved for further use ,... */ | ||
55 | } dasd_information2_t; | ||
56 | |||
57 | /* | ||
58 | * values to be used for dasd_information_t.format | ||
59 | * 0x00: NOT formatted | ||
60 | * 0x01: Linux disc layout | ||
61 | * 0x02: Common disc layout | ||
62 | */ | ||
63 | #define DASD_FORMAT_NONE 0 | ||
64 | #define DASD_FORMAT_LDL 1 | ||
65 | #define DASD_FORMAT_CDL 2 | ||
66 | /* | ||
67 | * values to be used for dasd_information_t.features | ||
68 | * 0x00: default features | ||
69 | * 0x01: readonly (ro) | ||
70 | * 0x02: use diag discipline (diag) | ||
71 | * 0x04: set the device initially online (internal use only) | ||
72 | * 0x08: enable ERP related logging | ||
73 | */ | ||
74 | #define DASD_FEATURE_DEFAULT 0x00 | ||
75 | #define DASD_FEATURE_READONLY 0x01 | ||
76 | #define DASD_FEATURE_USEDIAG 0x02 | ||
77 | #define DASD_FEATURE_INITIAL_ONLINE 0x04 | ||
78 | #define DASD_FEATURE_ERPLOG 0x08 | ||
79 | |||
80 | #define DASD_PARTN_BITS 2 | ||
81 | |||
82 | /* | ||
83 | * struct dasd_information_t | ||
84 | * represents any data about the data, which is visible to userspace | ||
85 | */ | ||
86 | typedef struct dasd_information_t { | ||
87 | unsigned int devno; /* S/390 devno */ | ||
88 | unsigned int real_devno; /* for aliases */ | ||
89 | unsigned int schid; /* S/390 subchannel identifier */ | ||
90 | unsigned int cu_type : 16; /* from SenseID */ | ||
91 | unsigned int cu_model : 8; /* from SenseID */ | ||
92 | unsigned int dev_type : 16; /* from SenseID */ | ||
93 | unsigned int dev_model : 8; /* from SenseID */ | ||
94 | unsigned int open_count; | ||
95 | unsigned int req_queue_len; | ||
96 | unsigned int chanq_len; /* length of chanq */ | ||
97 | char type[4]; /* from discipline.name, 'none' for unknown */ | ||
98 | unsigned int status; /* current device level */ | ||
99 | unsigned int label_block; /* where to find the VOLSER */ | ||
100 | unsigned int FBA_layout; /* fixed block size (like AIXVOL) */ | ||
101 | unsigned int characteristics_size; | ||
102 | unsigned int confdata_size; | ||
103 | char characteristics[64]; /* from read_device_characteristics */ | ||
104 | char configuration_data[256]; /* from read_configuration_data */ | ||
105 | } dasd_information_t; | ||
106 | |||
107 | /* | ||
108 | * Read Subsystem Data - Performance Statistics | ||
109 | */ | ||
110 | typedef struct dasd_rssd_perf_stats_t { | ||
111 | unsigned char invalid:1; | ||
112 | unsigned char format:3; | ||
113 | unsigned char data_format:4; | ||
114 | unsigned char unit_address; | ||
115 | unsigned short device_status; | ||
116 | unsigned int nr_read_normal; | ||
117 | unsigned int nr_read_normal_hits; | ||
118 | unsigned int nr_write_normal; | ||
119 | unsigned int nr_write_fast_normal_hits; | ||
120 | unsigned int nr_read_seq; | ||
121 | unsigned int nr_read_seq_hits; | ||
122 | unsigned int nr_write_seq; | ||
123 | unsigned int nr_write_fast_seq_hits; | ||
124 | unsigned int nr_read_cache; | ||
125 | unsigned int nr_read_cache_hits; | ||
126 | unsigned int nr_write_cache; | ||
127 | unsigned int nr_write_fast_cache_hits; | ||
128 | unsigned int nr_inhibit_cache; | ||
129 | unsigned int nr_bybass_cache; | ||
130 | unsigned int nr_seq_dasd_to_cache; | ||
131 | unsigned int nr_dasd_to_cache; | ||
132 | unsigned int nr_cache_to_dasd; | ||
133 | unsigned int nr_delayed_fast_write; | ||
134 | unsigned int nr_normal_fast_write; | ||
135 | unsigned int nr_seq_fast_write; | ||
136 | unsigned int nr_cache_miss; | ||
137 | unsigned char status2; | ||
138 | unsigned int nr_quick_write_promotes; | ||
139 | unsigned char reserved; | ||
140 | unsigned short ssid; | ||
141 | unsigned char reseved2[96]; | ||
142 | } __attribute__((packed)) dasd_rssd_perf_stats_t; | ||
143 | |||
144 | /* | ||
145 | * struct profile_info_t | ||
146 | * holds the profinling information | ||
147 | */ | ||
148 | typedef struct dasd_profile_info_t { | ||
149 | unsigned int dasd_io_reqs; /* number of requests processed at all */ | ||
150 | unsigned int dasd_io_sects; /* number of sectors processed at all */ | ||
151 | unsigned int dasd_io_secs[32]; /* histogram of request's sizes */ | ||
152 | unsigned int dasd_io_times[32]; /* histogram of requests's times */ | ||
153 | unsigned int dasd_io_timps[32]; /* histogram of requests's times per sector */ | ||
154 | unsigned int dasd_io_time1[32]; /* histogram of time from build to start */ | ||
155 | unsigned int dasd_io_time2[32]; /* histogram of time from start to irq */ | ||
156 | unsigned int dasd_io_time2ps[32]; /* histogram of time from start to irq */ | ||
157 | unsigned int dasd_io_time3[32]; /* histogram of time from irq to end */ | ||
158 | unsigned int dasd_io_nr_req[32]; /* histogram of # of requests in chanq */ | ||
159 | } dasd_profile_info_t; | ||
160 | |||
161 | /* | ||
162 | * struct format_data_t | ||
163 | * represents all data necessary to format a dasd | ||
164 | */ | ||
165 | typedef struct format_data_t { | ||
166 | int start_unit; /* from track */ | ||
167 | int stop_unit; /* to track */ | ||
168 | int blksize; /* sectorsize */ | ||
169 | int intensity; | ||
170 | } format_data_t; | ||
171 | |||
172 | /* | ||
173 | * values to be used for format_data_t.intensity | ||
174 | * 0/8: normal format | ||
175 | * 1/9: also write record zero | ||
176 | * 3/11: also write home address | ||
177 | * 4/12: invalidate track | ||
178 | */ | ||
179 | #define DASD_FMT_INT_FMT_R0 1 /* write record zero */ | ||
180 | #define DASD_FMT_INT_FMT_HA 2 /* write home address, also set FMT_R0 ! */ | ||
181 | #define DASD_FMT_INT_INVAL 4 /* invalidate tracks */ | ||
182 | #define DASD_FMT_INT_COMPAT 8 /* use OS/390 compatible disk layout */ | ||
183 | |||
184 | |||
185 | /* | ||
186 | * struct attrib_data_t | ||
187 | * represents the operation (cache) bits for the device. | ||
188 | * Used in DE to influence caching of the DASD. | ||
189 | */ | ||
190 | typedef struct attrib_data_t { | ||
191 | unsigned char operation:3; /* cache operation mode */ | ||
192 | unsigned char reserved:5; /* cache operation mode */ | ||
193 | __u16 nr_cyl; /* no of cyliners for read ahaed */ | ||
194 | __u8 reserved2[29]; /* for future use */ | ||
195 | } __attribute__ ((packed)) attrib_data_t; | ||
196 | |||
197 | /* definition of operation (cache) bits within attributes of DE */ | ||
198 | #define DASD_NORMAL_CACHE 0x0 | ||
199 | #define DASD_BYPASS_CACHE 0x1 | ||
200 | #define DASD_INHIBIT_LOAD 0x2 | ||
201 | #define DASD_SEQ_ACCESS 0x3 | ||
202 | #define DASD_SEQ_PRESTAGE 0x4 | ||
203 | #define DASD_REC_ACCESS 0x5 | ||
204 | |||
205 | |||
206 | /******************************************************************************** | ||
207 | * SECTION: Definition of IOCTLs | ||
208 | * | ||
209 | * Here ist how the ioctl-nr should be used: | ||
210 | * 0 - 31 DASD driver itself | ||
211 | * 32 - 239 still open | ||
212 | * 240 - 255 reserved for EMC | ||
213 | *******************************************************************************/ | ||
214 | |||
215 | /* Disable the volume (for Linux) */ | ||
216 | #define BIODASDDISABLE _IO(DASD_IOCTL_LETTER,0) | ||
217 | /* Enable the volume (for Linux) */ | ||
218 | #define BIODASDENABLE _IO(DASD_IOCTL_LETTER,1) | ||
219 | /* Issue a reserve/release command, rsp. */ | ||
220 | #define BIODASDRSRV _IO(DASD_IOCTL_LETTER,2) /* reserve */ | ||
221 | #define BIODASDRLSE _IO(DASD_IOCTL_LETTER,3) /* release */ | ||
222 | #define BIODASDSLCK _IO(DASD_IOCTL_LETTER,4) /* steal lock */ | ||
223 | /* reset profiling information of a device */ | ||
224 | #define BIODASDPRRST _IO(DASD_IOCTL_LETTER,5) | ||
225 | /* Quiesce IO on device */ | ||
226 | #define BIODASDQUIESCE _IO(DASD_IOCTL_LETTER,6) | ||
227 | /* Resume IO on device */ | ||
228 | #define BIODASDRESUME _IO(DASD_IOCTL_LETTER,7) | ||
229 | |||
230 | |||
231 | /* retrieve API version number */ | ||
232 | #define DASDAPIVER _IOR(DASD_IOCTL_LETTER,0,int) | ||
233 | /* Get information on a dasd device */ | ||
234 | #define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t) | ||
235 | /* retrieve profiling information of a device */ | ||
236 | #define BIODASDPRRD _IOR(DASD_IOCTL_LETTER,2,dasd_profile_info_t) | ||
237 | /* Get information on a dasd device (enhanced) */ | ||
238 | #define BIODASDINFO2 _IOR(DASD_IOCTL_LETTER,3,dasd_information2_t) | ||
239 | /* Performance Statistics Read */ | ||
240 | #define BIODASDPSRD _IOR(DASD_IOCTL_LETTER,4,dasd_rssd_perf_stats_t) | ||
241 | /* Get Attributes (cache operations) */ | ||
242 | #define BIODASDGATTR _IOR(DASD_IOCTL_LETTER,5,attrib_data_t) | ||
243 | |||
244 | |||
245 | /* #define BIODASDFORMAT _IOW(IOCTL_LETTER,0,format_data_t) , deprecated */ | ||
246 | #define BIODASDFMT _IOW(DASD_IOCTL_LETTER,1,format_data_t) | ||
247 | /* Set Attributes (cache operations) */ | ||
248 | #define BIODASDSATTR _IOW(DASD_IOCTL_LETTER,2,attrib_data_t) | ||
249 | |||
250 | |||
251 | #endif /* DASD_H */ | ||
252 | |||
253 | /* | ||
254 | * Overrides for Emacs so that we follow Linus's tabbing style. | ||
255 | * Emacs will notice this stuff at the end of the file and automatically | ||
256 | * adjust the settings for this buffer only. This must remain at the end | ||
257 | * of the file. | ||
258 | * --------------------------------------------------------------------------- | ||
259 | * Local variables: | ||
260 | * c-indent-level: 4 | ||
261 | * c-brace-imaginary-offset: 0 | ||
262 | * c-brace-offset: -4 | ||
263 | * c-argdecl-indent: 4 | ||
264 | * c-label-offset: -4 | ||
265 | * c-continued-statement-offset: 4 | ||
266 | * c-continued-brace-offset: 0 | ||
267 | * indent-tabs-mode: nil | ||
268 | * tab-width: 8 | ||
269 | * End: | ||
270 | */ | ||