xref: /linux/drivers/s390/block/dasd_eckd.h (revision 14b42963f64b98ab61fa9723c03d71aa5ef4f862)
1 /*
2  * File...........: linux/drivers/s390/block/dasd_eckd.h
3  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
4  *		    Horst Hummel <Horst.Hummel@de.ibm.com>
5  * Bugreports.to..: <Linux390@de.ibm.com>
6  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
7  *
8  */
9 
10 #ifndef DASD_ECKD_H
11 #define DASD_ECKD_H
12 
13 /*****************************************************************************
14  * SECTION: CCW Definitions
15  ****************************************************************************/
16 #define DASD_ECKD_CCW_WRITE		 0x05
17 #define DASD_ECKD_CCW_READ		 0x06
18 #define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09
19 #define DASD_ECKD_CCW_READ_HOME_ADDRESS	 0x0a
20 #define DASD_ECKD_CCW_WRITE_KD		 0x0d
21 #define DASD_ECKD_CCW_READ_KD		 0x0e
22 #define DASD_ECKD_CCW_ERASE		 0x11
23 #define DASD_ECKD_CCW_READ_COUNT	 0x12
24 #define DASD_ECKD_CCW_SLCK		 0x14
25 #define DASD_ECKD_CCW_WRITE_RECORD_ZERO	 0x15
26 #define DASD_ECKD_CCW_READ_RECORD_ZERO	 0x16
27 #define DASD_ECKD_CCW_WRITE_CKD		 0x1d
28 #define DASD_ECKD_CCW_READ_CKD		 0x1e
29 #define DASD_ECKD_CCW_PSF		 0x27
30 #define DASD_ECKD_CCW_RSSD		 0x3e
31 #define DASD_ECKD_CCW_LOCATE_RECORD	 0x47
32 #define DASD_ECKD_CCW_SNSS		 0x54
33 #define DASD_ECKD_CCW_DEFINE_EXTENT	 0x63
34 #define DASD_ECKD_CCW_WRITE_MT		 0x85
35 #define DASD_ECKD_CCW_READ_MT		 0x86
36 #define DASD_ECKD_CCW_WRITE_KD_MT	 0x8d
37 #define DASD_ECKD_CCW_READ_KD_MT	 0x8e
38 #define DASD_ECKD_CCW_RELEASE		 0x94
39 #define DASD_ECKD_CCW_READ_CKD_MT	 0x9e
40 #define DASD_ECKD_CCW_WRITE_CKD_MT	 0x9d
41 #define DASD_ECKD_CCW_RESERVE		 0xB4
42 
43 /*
44  * Perform Subsystem Function / Sub-Orders
45  */
46 #define PSF_ORDER_PRSSD 0x18
47 #define PSF_ORDER_SSC	0x1D
48 
49 /*****************************************************************************
50  * SECTION: Type Definitions
51  ****************************************************************************/
52 
53 struct eckd_count {
54 	__u16 cyl;
55 	__u16 head;
56 	__u8 record;
57 	__u8 kl;
58 	__u16 dl;
59 } __attribute__ ((packed));
60 
61 struct ch_t {
62 	__u16 cyl;
63 	__u16 head;
64 } __attribute__ ((packed));
65 
66 struct chs_t {
67 	__u16 cyl;
68 	__u16 head;
69 	__u32 sector;
70 } __attribute__ ((packed));
71 
72 struct chr_t {
73 	__u16 cyl;
74 	__u16 head;
75 	__u8 record;
76 } __attribute__ ((packed));
77 
78 struct geom_t {
79 	__u16 cyl;
80 	__u16 head;
81 	__u32 sector;
82 } __attribute__ ((packed));
83 
84 struct eckd_home {
85 	__u8 skip_control[14];
86 	__u16 cell_number;
87 	__u8 physical_addr[3];
88 	__u8 flag;
89 	struct ch_t track_addr;
90 	__u8 reserved;
91 	__u8 key_length;
92 	__u8 reserved2[2];
93 } __attribute__ ((packed));
94 
95 struct DE_eckd_data {
96 	struct {
97 		unsigned char perm:2;	/* Permissions on this extent */
98 		unsigned char reserved:1;
99 		unsigned char seek:2;	/* Seek control */
100 		unsigned char auth:2;	/* Access authorization */
101 		unsigned char pci:1;	/* PCI Fetch mode */
102 	} __attribute__ ((packed)) mask;
103 	struct {
104 		unsigned char mode:2;	/* Architecture mode */
105 		unsigned char ckd:1;	/* CKD Conversion */
106 		unsigned char operation:3;	/* Operation mode */
107 		unsigned char cfw:1;	/* Cache fast write */
108 		unsigned char dfw:1;	/* DASD fast write */
109 	} __attribute__ ((packed)) attributes;
110 	__u16 blk_size;		/* Blocksize */
111 	__u16 fast_write_id;
112 	__u8 ga_additional;	/* Global Attributes Additional */
113 	__u8 ga_extended;	/* Global Attributes Extended	*/
114 	struct ch_t beg_ext;
115 	struct ch_t end_ext;
116 	unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
117 	__u8 ep_format;        /* Extended Parameter format byte       */
118 	__u8 ep_prio;          /* Extended Parameter priority I/O byte */
119 	__u8 ep_reserved[6];   /* Extended Parameter Reserved          */
120 } __attribute__ ((packed));
121 
122 struct LO_eckd_data {
123 	struct {
124 		unsigned char orientation:2;
125 		unsigned char operation:6;
126 	} __attribute__ ((packed)) operation;
127 	struct {
128 		unsigned char last_bytes_used:1;
129 		unsigned char reserved:6;
130 		unsigned char read_count_suffix:1;
131 	} __attribute__ ((packed)) auxiliary;
132 	__u8 unused;
133 	__u8 count;
134 	struct ch_t seek_addr;
135 	struct chr_t search_arg;
136 	__u8 sector;
137 	__u16 length;
138 } __attribute__ ((packed));
139 
140 struct dasd_eckd_characteristics {
141 	__u16 cu_type;
142 	struct {
143 		unsigned char support:2;
144 		unsigned char async:1;
145 		unsigned char reserved:1;
146 		unsigned char cache_info:1;
147 		unsigned char model:3;
148 	} __attribute__ ((packed)) cu_model;
149 	__u16 dev_type;
150 	__u8 dev_model;
151 	struct {
152 		unsigned char mult_burst:1;
153 		unsigned char RT_in_LR:1;
154 		unsigned char reserved1:1;
155 		unsigned char RD_IN_LR:1;
156 		unsigned char reserved2:4;
157 		unsigned char reserved3:8;
158 		unsigned char defect_wr:1;
159 		unsigned char XRC_supported:1;
160 		unsigned char reserved4:1;
161 		unsigned char striping:1;
162 		unsigned char reserved5:4;
163 		unsigned char cfw:1;
164 		unsigned char reserved6:2;
165 		unsigned char cache:1;
166 		unsigned char dual_copy:1;
167 		unsigned char dfw:1;
168 		unsigned char reset_alleg:1;
169 		unsigned char sense_down:1;
170 	} __attribute__ ((packed)) facilities;
171 	__u8 dev_class;
172 	__u8 unit_type;
173 	__u16 no_cyl;
174 	__u16 trk_per_cyl;
175 	__u8 sec_per_trk;
176 	__u8 byte_per_track[3];
177 	__u16 home_bytes;
178 	__u8 formula;
179 	union {
180 		struct {
181 			__u8 f1;
182 			__u16 f2;
183 			__u16 f3;
184 		} __attribute__ ((packed)) f_0x01;
185 		struct {
186 			__u8 f1;
187 			__u8 f2;
188 			__u8 f3;
189 			__u8 f4;
190 			__u8 f5;
191 		} __attribute__ ((packed)) f_0x02;
192 	} __attribute__ ((packed)) factors;
193 	__u16 first_alt_trk;
194 	__u16 no_alt_trk;
195 	__u16 first_dia_trk;
196 	__u16 no_dia_trk;
197 	__u16 first_sup_trk;
198 	__u16 no_sup_trk;
199 	__u8 MDR_ID;
200 	__u8 OBR_ID;
201 	__u8 director;
202 	__u8 rd_trk_set;
203 	__u16 max_rec_zero;
204 	__u8 reserved1;
205 	__u8 RWANY_in_LR;
206 	__u8 factor6;
207 	__u8 factor7;
208 	__u8 factor8;
209 	__u8 reserved2[3];
210 	__u8 reserved3[10];
211 } __attribute__ ((packed));
212 
213 struct dasd_eckd_confdata {
214 	struct {
215 		struct {
216 			unsigned char identifier:2;
217 			unsigned char token_id:1;
218 			unsigned char sno_valid:1;
219 			unsigned char subst_sno:1;
220 			unsigned char recNED:1;
221 			unsigned char emuNED:1;
222 			unsigned char reserved:1;
223 		} __attribute__ ((packed)) flags;
224 		__u8 descriptor;
225 		__u8 dev_class;
226 		__u8 reserved;
227 		unsigned char dev_type[6];
228 		unsigned char dev_model[3];
229 		unsigned char HDA_manufacturer[3];
230 		unsigned char HDA_location[2];
231 		unsigned char HDA_seqno[12];
232 		__u8 ID;
233 		__u8 unit_addr;
234 	} __attribute__ ((packed)) ned1;
235 	union {
236 		struct {
237 			struct {
238 				unsigned char identifier:2;
239 				unsigned char token_id:1;
240 				unsigned char sno_valid:1;
241 				unsigned char subst_sno:1;
242 				unsigned char recNED:1;
243 				unsigned char emuNED:1;
244 				unsigned char reserved:1;
245 			} __attribute__ ((packed)) flags;
246 			__u8 descriptor;
247 			__u8 reserved[2];
248 			unsigned char dev_type[6];
249 			unsigned char dev_model[3];
250 			unsigned char DASD_manufacturer[3];
251 			unsigned char DASD_location[2];
252 			unsigned char DASD_seqno[12];
253 			__u16 ID;
254 		} __attribute__ ((packed)) ned;
255 		struct {
256 			unsigned char flags;            /* byte  0    */
257 			unsigned char res2[7];          /* byte  1- 7 */
258 			unsigned char sua_flags;	/* byte  8    */
259 			__u8 base_unit_addr;            /* byte  9    */
260 			unsigned char res3[22];	        /* byte 10-31 */
261 		} __attribute__ ((packed)) sneq;
262 	} __attribute__ ((packed)) ned2;
263 	struct {
264 		struct {
265 			unsigned char identifier:2;
266 			unsigned char token_id:1;
267 			unsigned char sno_valid:1;
268 			unsigned char subst_sno:1;
269 			unsigned char recNED:1;
270 			unsigned char emuNED:1;
271 			unsigned char reserved:1;
272 		} __attribute__ ((packed)) flags;
273 		__u8 descriptor;
274 		__u8 reserved[2];
275 		unsigned char cont_type[6];
276 		unsigned char cont_model[3];
277 		unsigned char cont_manufacturer[3];
278 		unsigned char cont_location[2];
279 		unsigned char cont_seqno[12];
280 		__u16 ID;
281 	} __attribute__ ((packed)) ned3;
282 	struct {
283 		struct {
284 			unsigned char identifier:2;
285 			unsigned char token_id:1;
286 			unsigned char sno_valid:1;
287 			unsigned char subst_sno:1;
288 			unsigned char recNED:1;
289 			unsigned char emuNED:1;
290 			unsigned char reserved:1;
291 		} __attribute__ ((packed)) flags;
292 		__u8 descriptor;
293 		__u8 reserved[2];
294 		unsigned char cont_type[6];
295 		unsigned char empty[3];
296 		unsigned char cont_manufacturer[3];
297 		unsigned char cont_location[2];
298 		unsigned char cont_seqno[12];
299 		__u16 ID;
300 	} __attribute__ ((packed)) ned4;
301 	unsigned char ned5[32];
302 	unsigned char ned6[32];
303 	unsigned char ned7[32];
304 	struct {
305 		struct {
306 			unsigned char identifier:2;
307 			unsigned char reserved:6;
308 		} __attribute__ ((packed)) flags;
309 		__u8 selector;
310 		__u16 interfaceID;
311 		__u32 reserved;
312 		__u16 subsystemID;
313 		struct {
314 			unsigned char sp0:1;
315 			unsigned char sp1:1;
316 			unsigned char reserved:5;
317 			unsigned char scluster:1;
318 		} __attribute__ ((packed)) spathID;
319 		__u8 unit_address;
320 		__u8 dev_ID;
321 		__u8 dev_address;
322 		__u8 adapterID;
323 		__u16 link_address;
324 		struct {
325 			unsigned char parallel:1;
326 			unsigned char escon:1;
327 			unsigned char reserved:1;
328 			unsigned char ficon:1;
329 			unsigned char reserved2:4;
330 		} __attribute__ ((packed)) protocol_type;
331 		struct {
332 			unsigned char PID_in_236:1;
333 			unsigned char reserved:7;
334 		} __attribute__ ((packed)) format_flags;
335 		__u8 log_dev_address;
336 		unsigned char reserved2[12];
337 	} __attribute__ ((packed)) neq;
338 } __attribute__ ((packed));
339 
340 struct dasd_eckd_path {
341 	__u8 opm;
342 	__u8 ppm;
343 	__u8 npm;
344 };
345 
346 /*
347  * Perform Subsystem Function - Prepare for Read Subsystem Data
348  */
349 struct dasd_psf_prssd_data {
350 	unsigned char order;
351 	unsigned char flags;
352 	unsigned char reserved[4];
353 	unsigned char suborder;
354 	unsigned char varies[9];
355 } __attribute__ ((packed));
356 
357 /*
358  * Perform Subsystem Function - Set Subsystem Characteristics
359  */
360 struct dasd_psf_ssc_data {
361 	unsigned char order;
362 	unsigned char flags;
363 	unsigned char cu_type[4];
364 	unsigned char suborder;
365 	unsigned char reserved[59];
366 } __attribute__((packed));
367 
368 #endif				/* DASD_ECKD_H */
369