[mirror_ubuntu-hirsute-kernel.git] / drivers / s390 / block / dasd_eckd.h

/*
 * File...........: linux/drivers/s390/block/dasd_eckd.h
 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
 *		    Horst Hummel <Horst.Hummel@de.ibm.com>
 * Bugreports.to..: <Linux390@de.ibm.com>
 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
 *
 */

#ifndef DASD_ECKD_H
#define DASD_ECKD_H

/*****************************************************************************
 * SECTION: CCW Definitions
 ****************************************************************************/
#define DASD_ECKD_CCW_WRITE		 0x05
#define DASD_ECKD_CCW_READ		 0x06
#define DASD_ECKD_CCW_WRITE_HOME_ADDRESS 0x09
#define DASD_ECKD_CCW_READ_HOME_ADDRESS	 0x0a
#define DASD_ECKD_CCW_WRITE_KD		 0x0d
#define DASD_ECKD_CCW_READ_KD		 0x0e
#define DASD_ECKD_CCW_ERASE		 0x11
#define DASD_ECKD_CCW_READ_COUNT	 0x12
#define DASD_ECKD_CCW_SLCK		 0x14
#define DASD_ECKD_CCW_WRITE_RECORD_ZERO	 0x15
#define DASD_ECKD_CCW_READ_RECORD_ZERO	 0x16
#define DASD_ECKD_CCW_WRITE_CKD		 0x1d
#define DASD_ECKD_CCW_READ_CKD		 0x1e
#define DASD_ECKD_CCW_PSF		 0x27
#define DASD_ECKD_CCW_RSSD		 0x3e
#define DASD_ECKD_CCW_LOCATE_RECORD	 0x47
#define DASD_ECKD_CCW_SNSS		 0x54
#define DASD_ECKD_CCW_DEFINE_EXTENT	 0x63
#define DASD_ECKD_CCW_WRITE_MT		 0x85
#define DASD_ECKD_CCW_READ_MT		 0x86
#define DASD_ECKD_CCW_WRITE_KD_MT	 0x8d
#define DASD_ECKD_CCW_READ_KD_MT	 0x8e
#define DASD_ECKD_CCW_RELEASE		 0x94
#define DASD_ECKD_CCW_READ_CKD_MT	 0x9e
#define DASD_ECKD_CCW_WRITE_CKD_MT	 0x9d
#define DASD_ECKD_CCW_RESERVE		 0xB4

/*
 * Perform Subsystem Function / Sub-Orders
 */
#define PSF_ORDER_PRSSD 0x18
#define PSF_ORDER_SSC	0x1D

/*****************************************************************************
 * SECTION: Type Definitions
 ****************************************************************************/

struct eckd_count {
	__u16 cyl;
	__u16 head;
	__u8 record;
	__u8 kl;
	__u16 dl;
} __attribute__ ((packed));

struct ch_t {
	__u16 cyl;
	__u16 head;
} __attribute__ ((packed));

struct chs_t {
	__u16 cyl;
	__u16 head;
	__u32 sector;
} __attribute__ ((packed));

struct chr_t {
	__u16 cyl;
	__u16 head;
	__u8 record;
} __attribute__ ((packed));

struct geom_t {
	__u16 cyl;
	__u16 head;
	__u32 sector;
} __attribute__ ((packed));

struct eckd_home {
	__u8 skip_control[14];
	__u16 cell_number;
	__u8 physical_addr[3];
	__u8 flag;
	struct ch_t track_addr;
	__u8 reserved;
	__u8 key_length;
	__u8 reserved2[2];
} __attribute__ ((packed));

struct DE_eckd_data {
	struct {
		unsigned char perm:2;	/* Permissions on this extent */
		unsigned char reserved:1;
		unsigned char seek:2;	/* Seek control */
		unsigned char auth:2;	/* Access authorization */
		unsigned char pci:1;	/* PCI Fetch mode */
	} __attribute__ ((packed)) mask;
	struct {
		unsigned char mode:2;	/* Architecture mode */
		unsigned char ckd:1;	/* CKD Conversion */
		unsigned char operation:3;	/* Operation mode */
		unsigned char cfw:1;	/* Cache fast write */
		unsigned char dfw:1;	/* DASD fast write */
	} __attribute__ ((packed)) attributes;
	__u16 blk_size;		/* Blocksize */
	__u16 fast_write_id;
	__u8 ga_additional;	/* Global Attributes Additional */
	__u8 ga_extended;	/* Global Attributes Extended	*/
	struct ch_t beg_ext;
	struct ch_t end_ext;
	unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
	__u8 ep_format;        /* Extended Parameter format byte       */
	__u8 ep_prio;          /* Extended Parameter priority I/O byte */
	__u8 ep_reserved[6];   /* Extended Parameter Reserved          */
} __attribute__ ((packed));

struct LO_eckd_data {
	struct {
		unsigned char orientation:2;
		unsigned char operation:6;
	} __attribute__ ((packed)) operation;
	struct {
		unsigned char last_bytes_used:1;
		unsigned char reserved:6;
		unsigned char read_count_suffix:1;
	} __attribute__ ((packed)) auxiliary;
	__u8 unused;
	__u8 count;
	struct ch_t seek_addr;
	struct chr_t search_arg;
	__u8 sector;
	__u16 length;
} __attribute__ ((packed));

struct dasd_eckd_characteristics {
	__u16 cu_type;
	struct {
		unsigned char support:2;
		unsigned char async:1;
		unsigned char reserved:1;
		unsigned char cache_info:1;
		unsigned char model:3;
	} __attribute__ ((packed)) cu_model;
	__u16 dev_type;
	__u8 dev_model;
	struct {
		unsigned char mult_burst:1;
		unsigned char RT_in_LR:1;
		unsigned char reserved1:1;
		unsigned char RD_IN_LR:1;
		unsigned char reserved2:4;
		unsigned char reserved3:8;
		unsigned char defect_wr:1;
		unsigned char XRC_supported:1;
		unsigned char reserved4:1;
		unsigned char striping:1;
		unsigned char reserved5:4;
		unsigned char cfw:1;
		unsigned char reserved6:2;
		unsigned char cache:1;
		unsigned char dual_copy:1;
		unsigned char dfw:1;
		unsigned char reset_alleg:1;
		unsigned char sense_down:1;
	} __attribute__ ((packed)) facilities;
	__u8 dev_class;
	__u8 unit_type;
	__u16 no_cyl;
	__u16 trk_per_cyl;
	__u8 sec_per_trk;
	__u8 byte_per_track[3];
	__u16 home_bytes;
	__u8 formula;
	union {
		struct {
			__u8 f1;
			__u16 f2;
			__u16 f3;
		} __attribute__ ((packed)) f_0x01;
		struct {
			__u8 f1;
			__u8 f2;
			__u8 f3;
			__u8 f4;
			__u8 f5;
		} __attribute__ ((packed)) f_0x02;
	} __attribute__ ((packed)) factors;
	__u16 first_alt_trk;
	__u16 no_alt_trk;
	__u16 first_dia_trk;
	__u16 no_dia_trk;
	__u16 first_sup_trk;
	__u16 no_sup_trk;
	__u8 MDR_ID;
	__u8 OBR_ID;
	__u8 director;
	__u8 rd_trk_set;
	__u16 max_rec_zero;
	__u8 reserved1;
	__u8 RWANY_in_LR;
	__u8 factor6;
	__u8 factor7;
	__u8 factor8;
	__u8 reserved2[3];
	__u8 reserved3[10];
} __attribute__ ((packed));

struct dasd_eckd_confdata {
	struct {
		struct {
			unsigned char identifier:2;
			unsigned char token_id:1;
			unsigned char sno_valid:1;
			unsigned char subst_sno:1;
			unsigned char recNED:1;
			unsigned char emuNED:1;
			unsigned char reserved:1;
		} __attribute__ ((packed)) flags;
		__u8 descriptor;
		__u8 dev_class;
		__u8 reserved;
		unsigned char dev_type[6];
		unsigned char dev_model[3];
		unsigned char HDA_manufacturer[3];
		unsigned char HDA_location[2];
		unsigned char HDA_seqno[12];
		__u8 ID;
		__u8 unit_addr;
	} __attribute__ ((packed)) ned1;
	union {
		struct {
			struct {
				unsigned char identifier:2;
				unsigned char token_id:1;
				unsigned char sno_valid:1;
				unsigned char subst_sno:1;
				unsigned char recNED:1;
				unsigned char emuNED:1;
				unsigned char reserved:1;
			} __attribute__ ((packed)) flags;
			__u8 descriptor;
			__u8 reserved[2];
			unsigned char dev_type[6];
			unsigned char dev_model[3];
			unsigned char DASD_manufacturer[3];
			unsigned char DASD_location[2];
			unsigned char DASD_seqno[12];
			__u16 ID;
		} __attribute__ ((packed)) ned;
		struct {
			unsigned char flags;            /* byte  0    */
			unsigned char res2[7];          /* byte  1- 7 */
			unsigned char sua_flags;	/* byte  8    */
			__u8 base_unit_addr;            /* byte  9    */
			unsigned char res3[22];	        /* byte 10-31 */
		} __attribute__ ((packed)) sneq;
	} __attribute__ ((packed)) ned2;
	struct {
		struct {
			unsigned char identifier:2;
			unsigned char token_id:1;
			unsigned char sno_valid:1;
			unsigned char subst_sno:1;
			unsigned char recNED:1;
			unsigned char emuNED:1;
			unsigned char reserved:1;
		} __attribute__ ((packed)) flags;
		__u8 descriptor;
		__u8 reserved[2];
		unsigned char cont_type[6];
		unsigned char cont_model[3];
		unsigned char cont_manufacturer[3];
		unsigned char cont_location[2];
		unsigned char cont_seqno[12];
		__u16 ID;
	} __attribute__ ((packed)) ned3;
	struct {
		struct {
			unsigned char identifier:2;
			unsigned char token_id:1;
			unsigned char sno_valid:1;
			unsigned char subst_sno:1;
			unsigned char recNED:1;
			unsigned char emuNED:1;
			unsigned char reserved:1;
		} __attribute__ ((packed)) flags;
		__u8 descriptor;
		__u8 reserved[2];
		unsigned char cont_type[6];
		unsigned char empty[3];
		unsigned char cont_manufacturer[3];
		unsigned char cont_location[2];
		unsigned char cont_seqno[12];
		__u16 ID;
	} __attribute__ ((packed)) ned4;
	unsigned char ned5[32];
	unsigned char ned6[32];
	unsigned char ned7[32];
	struct {
		struct {
			unsigned char identifier:2;
			unsigned char reserved:6;
		} __attribute__ ((packed)) flags;
		__u8 selector;
		__u16 interfaceID;
		__u32 reserved;
		__u16 subsystemID;
		struct {
			unsigned char sp0:1;
			unsigned char sp1:1;
			unsigned char reserved:5;
			unsigned char scluster:1;
		} __attribute__ ((packed)) spathID;
		__u8 unit_address;
		__u8 dev_ID;
		__u8 dev_address;
		__u8 adapterID;
		__u16 link_address;
		struct {
			unsigned char parallel:1;
			unsigned char escon:1;
			unsigned char reserved:1;
			unsigned char ficon:1;
			unsigned char reserved2:4;
		} __attribute__ ((packed)) protocol_type;
		struct {
			unsigned char PID_in_236:1;
			unsigned char reserved:7;
		} __attribute__ ((packed)) format_flags;
		__u8 log_dev_address;
		unsigned char reserved2[12];
	} __attribute__ ((packed)) neq;
} __attribute__ ((packed));

struct dasd_eckd_path {
	__u8 opm;
	__u8 ppm;
	__u8 npm;
};

/*
 * Perform Subsystem Function - Prepare for Read Subsystem Data
 */
struct dasd_psf_prssd_data {
	unsigned char order;
	unsigned char flags;
	unsigned char reserved[4];
	unsigned char suborder;
	unsigned char varies[9];
} __attribute__ ((packed));

/*
 * Perform Subsystem Function - Set Subsystem Characteristics
 */
struct dasd_psf_ssc_data {
	unsigned char order;
	unsigned char flags;
	unsigned char cu_type[4];
	unsigned char suborder;
	unsigned char reserved[59];
} __attribute__((packed));

#endif				/* DASD_ECKD_H */
Commit	Line	Data
138c014d	1	/*
1da177e4 LT	2	* File...........: linux/drivers/s390/block/dasd_eckd.h
1da177e4 LT	3	* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
138c014d	4	* Horst Hummel <Horst.Hummel@de.ibm.com>
1da177e4 LT	5	* Bugreports.to..: <Linux390@de.ibm.com>
	6	* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
	7	*
1da177e4 LT	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
20c64468	32	#define DASD_ECKD_CCW_SNSS 0x54
1da177e4 LT	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	/*
40545573	44	* Perform Subsystem Function / Sub-Orders
1da177e4	45	*/
40545573 HH	46	#define PSF_ORDER_PRSSD 0x18
40545573 HH	47	#define PSF_ORDER_SSC 0x1D
1da177e4 LT	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;
138c014d	159	unsigned char XRC_supported:1;
1da177e4 LT	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];
3d052595 HH	232	__u8 ID;
3d052595 HH	233	__u8 unit_addr;
1da177e4	234	} __attribute__ ((packed)) ned1;
3d052595	235	union {
1da177e4	236	struct {
3d052595 HH	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;
1da177e4 LT	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	/*
138c014d	347	* Perform Subsystem Function - Prepare for Read Subsystem Data
1da177e4 LT	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
40545573 HH	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
1da177e4	368	#endif /* DASD_ECKD_H */