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
53struct eckd_count {
54	__u16 cyl;
55	__u16 head;
56	__u8 record;
57	__u8 kl;
58	__u16 dl;
59} __attribute__ ((packed));
60
61struct ch_t {
62	__u16 cyl;
63	__u16 head;
64} __attribute__ ((packed));
65
66struct chs_t {
67	__u16 cyl;
68	__u16 head;
69	__u32 sector;
70} __attribute__ ((packed));
71
72struct chr_t {
73	__u16 cyl;
74	__u16 head;
75	__u8 record;
76} __attribute__ ((packed));
77
78struct geom_t {
79	__u16 cyl;
80	__u16 head;
81	__u32 sector;
82} __attribute__ ((packed));
83
84struct 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
95struct 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
122struct 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
140struct 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
213struct 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
340struct 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 */
349struct 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 */
360struct 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