[linux-2.6-block.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_WRITE_TRACK_DATA	 0xA5
#define DASD_ECKD_CCW_READ_TRACK_DATA	 0xA6
#define DASD_ECKD_CCW_RESERVE		 0xB4
#define DASD_ECKD_CCW_PFX		 0xE7
#define DASD_ECKD_CCW_PFX_READ		 0xEA
#define DASD_ECKD_CCW_RSCK		 0xF9

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

/*
 * Size that is reportet for large volumes in the old 16-bit no_cyl field
 */
#define LV_COMPAT_CYL 0xFFFE

/*****************************************************************************
 * 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_reserved1;     /* Extended Parameter Reserved	       */
	__u8 ep_rec_per_track; /* Number of records on a track	       */
	__u8 ep_reserved[4];   /* 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 LRE_eckd_data {
	struct {
		unsigned char orientation:2;
		unsigned char operation:6;
	} __attribute__ ((packed)) operation;
	struct {
		unsigned char length_valid:1;
		unsigned char length_scope:1;
		unsigned char imbedded_ccw_valid:1;
		unsigned char check_bytes:2;
		unsigned char imbedded_count_valid:1;
		unsigned char reserved:1;
		unsigned char read_count_suffix:1;
	} __attribute__ ((packed)) auxiliary;
	__u8 imbedded_ccw;
	__u8 count;
	struct ch_t seek_addr;
	struct chr_t search_arg;
	__u8 sector;
	__u16 length;
	__u8 imbedded_count;
	__u8 extended_operation;
	__u16 extended_parameter_length;
	__u8 extended_parameter[0];
} __attribute__ ((packed));

/* Prefix data for format 0x00 and 0x01 */
struct PFX_eckd_data {
	unsigned char format;
	struct {
		unsigned char define_extent:1;
		unsigned char time_stamp:1;
		unsigned char verify_base:1;
		unsigned char hyper_pav:1;
		unsigned char reserved:4;
	} __attribute__ ((packed)) validity;
	__u8 base_address;
	__u8 aux;
	__u8 base_lss;
	__u8 reserved[7];
	struct DE_eckd_data define_extent;
	struct LRE_eckd_data locate_record;
} __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[6];
	__u32 long_no_cyl;
} __attribute__ ((packed));

/* elements of the configuration data */
struct dasd_ned {
	struct {
		__u8 identifier:2;
		__u8 token_id:1;
		__u8 sno_valid:1;
		__u8 subst_sno:1;
		__u8 recNED:1;
		__u8 emuNED:1;
		__u8 reserved:1;
	} __attribute__ ((packed)) flags;
	__u8 descriptor;
	__u8 dev_class;
	__u8 reserved;
	__u8 dev_type[6];
	__u8 dev_model[3];
	__u8 HDA_manufacturer[3];
	__u8 HDA_location[2];
	__u8 HDA_seqno[12];
	__u8 ID;
	__u8 unit_addr;
} __attribute__ ((packed));

struct dasd_sneq {
	struct {
		__u8 identifier:2;
		__u8 reserved:6;
	} __attribute__ ((packed)) flags;
	__u8 res1;
	__u16 format;
	__u8 res2[4];		/* byte  4- 7 */
	__u8 sua_flags;		/* byte  8    */
	__u8 base_unit_addr;	/* byte  9    */
	__u8 res3[22];		/* byte 10-31 */
} __attribute__ ((packed));

struct vd_sneq {
	struct {
		__u8 identifier:2;
		__u8 reserved:6;
	} __attribute__ ((packed)) flags;
	__u8 res1;
	__u16 format;
	__u8 res2[4];	/* byte  4- 7 */
	__u8 uit[16];	/* byte  8-23 */
	__u8 res3[8];	/* byte 24-31 */
} __attribute__ ((packed));

struct dasd_gneq {
	struct {
		__u8 identifier:2;
		__u8 reserved:6;
	} __attribute__ ((packed)) flags;
	__u8 reserved[7];
	__u16 subsystemID;
	__u8 reserved2[22];
} __attribute__ ((packed));

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

struct dasd_rssd_features {
	char feature[256];
} __attribute__((packed));


/*
 * 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[5];
} __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));


/*
 * some structures and definitions for alias handling
 */
struct dasd_unit_address_configuration {
	struct {
		char ua_type;
		char base_ua;
	} unit[256];
} __attribute__((packed));


#define MAX_DEVICES_PER_LCU 256

/* flags on the LCU  */
#define NEED_UAC_UPDATE  0x01
#define UPDATE_PENDING	0x02

enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};


struct alias_root {
	struct list_head serverlist;
	spinlock_t lock;
};

struct alias_server {
	struct list_head server;
	struct dasd_uid uid;
	struct list_head lculist;
};

struct summary_unit_check_work_data {
	char reason;
	struct dasd_device *device;
	struct work_struct worker;
};

struct read_uac_work_data {
	struct dasd_device *device;
	struct delayed_work dwork;
};

struct alias_lcu {
	struct list_head lcu;
	struct dasd_uid uid;
	enum pavtype pav;
	char flags;
	spinlock_t lock;
	struct list_head grouplist;
	struct list_head active_devices;
	struct list_head inactive_devices;
	struct dasd_unit_address_configuration *uac;
	struct summary_unit_check_work_data suc_data;
	struct read_uac_work_data ruac_data;
	struct dasd_ccw_req *rsu_cqr;
	struct completion lcu_setup;
};

struct alias_pav_group {
	struct list_head group;
	struct dasd_uid uid;
	struct alias_lcu *lcu;
	struct list_head baselist;
	struct list_head aliaslist;
	struct dasd_device *next;
};

struct dasd_eckd_private {
	struct dasd_eckd_characteristics rdc_data;
	u8 *conf_data;
	int conf_len;
	/* pointers to specific parts in the conf_data */
	struct dasd_ned *ned;
	struct dasd_sneq *sneq;
	struct vd_sneq *vdsneq;
	struct dasd_gneq *gneq;

	struct dasd_eckd_path path_data;
	struct eckd_count count_area[5];
	int init_cqr_status;
	int uses_cdl;
	struct attrib_data_t attrib;	/* e.g. cache operations */
	struct dasd_rssd_features features;
	u32 real_cyl;

	/* alias managemnet */
	struct dasd_uid uid;
	struct alias_pav_group *pavgroup;
	struct alias_lcu *lcu;
	int count;
};


int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
int dasd_alias_add_device(struct dasd_device *);
int dasd_alias_remove_device(struct dasd_device *);
struct dasd_device *dasd_alias_get_start_dev(struct dasd_device *);
void dasd_alias_handle_summary_unit_check(struct dasd_device *, struct irb *);
void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
void dasd_alias_lcu_setup_complete(struct dasd_device *);
void dasd_alias_wait_for_lcu_setup(struct dasd_device *);
int dasd_alias_update_add_device(struct dasd_device *);
#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
f3eb5384 SW	41	#define DASD_ECKD_CCW_WRITE_TRACK_DATA 0xA5
f3eb5384 SW	42	#define DASD_ECKD_CCW_READ_TRACK_DATA 0xA6
1da177e4	43	#define DASD_ECKD_CCW_RESERVE 0xB4
8e09f215	44	#define DASD_ECKD_CCW_PFX 0xE7
f3eb5384	45	#define DASD_ECKD_CCW_PFX_READ 0xEA
8e09f215	46	#define DASD_ECKD_CCW_RSCK 0xF9
1da177e4 LT	47
1da177e4 LT	48	/*
40545573	49	* Perform Subsystem Function / Sub-Orders
1da177e4	50	*/
40545573 HH	51	#define PSF_ORDER_PRSSD 0x18
40545573 HH	52	#define PSF_ORDER_SSC 0x1D
1da177e4	53
b44b0ab3 SW	54	/*
	55	* Size that is reportet for large volumes in the old 16-bit no_cyl field
	56	*/
	57	#define LV_COMPAT_CYL 0xFFFE
	58
1da177e4 LT	59	/*****************************************************************************
	60	* SECTION: Type Definitions
	61	****************************************************************************/
	62
	63	struct eckd_count {
	64	__u16 cyl;
	65	__u16 head;
	66	__u8 record;
	67	__u8 kl;
	68	__u16 dl;
	69	} __attribute__ ((packed));
	70
	71	struct ch_t {
	72	__u16 cyl;
	73	__u16 head;
	74	} __attribute__ ((packed));
	75
	76	struct chs_t {
	77	__u16 cyl;
	78	__u16 head;
	79	__u32 sector;
	80	} __attribute__ ((packed));
	81
	82	struct chr_t {
	83	__u16 cyl;
	84	__u16 head;
	85	__u8 record;
	86	} __attribute__ ((packed));
	87
	88	struct geom_t {
	89	__u16 cyl;
	90	__u16 head;
	91	__u32 sector;
	92	} __attribute__ ((packed));
	93
	94	struct eckd_home {
	95	__u8 skip_control[14];
	96	__u16 cell_number;
	97	__u8 physical_addr[3];
	98	__u8 flag;
	99	struct ch_t track_addr;
	100	__u8 reserved;
	101	__u8 key_length;
	102	__u8 reserved2[2];
	103	} __attribute__ ((packed));
	104
	105	struct DE_eckd_data {
	106	struct {
	107	unsigned char perm:2; /* Permissions on this extent */
	108	unsigned char reserved:1;
	109	unsigned char seek:2; /* Seek control */
	110	unsigned char auth:2; /* Access authorization */
	111	unsigned char pci:1; /* PCI Fetch mode */
	112	} __attribute__ ((packed)) mask;
	113	struct {
	114	unsigned char mode:2; /* Architecture mode */
	115	unsigned char ckd:1; /* CKD Conversion */
	116	unsigned char operation:3; /* Operation mode */
	117	unsigned char cfw:1; /* Cache fast write */
	118	unsigned char dfw:1; /* DASD fast write */
	119	} __attribute__ ((packed)) attributes;
	120	__u16 blk_size; /* Blocksize */
	121	__u16 fast_write_id;
	122	__u8 ga_additional; /* Global Attributes Additional */
123	__u8 ga_extended; /* Global Attributes Extended */
124	struct ch_t beg_ext;
125	struct ch_t end_ext;
126	unsigned long long ep_sys_time; /* Ext Parameter - System Time Stamp */
127	__u8 ep_format; /* Extended Parameter format byte */
128	__u8 ep_prio; /* Extended Parameter priority I/O byte */
f3eb5384 SW	129	__u8 ep_reserved1; /* Extended Parameter Reserved */
	130	__u8 ep_rec_per_track; /* Number of records on a track */
	131	__u8 ep_reserved[4]; /* Extended Parameter Reserved */
1da177e4 LT	132	} __attribute__ ((packed));
	133
	134	struct LO_eckd_data {
	135	struct {
	136	unsigned char orientation:2;
	137	unsigned char operation:6;
	138	} __attribute__ ((packed)) operation;
	139	struct {
	140	unsigned char last_bytes_used:1;
	141	unsigned char reserved:6;
	142	unsigned char read_count_suffix:1;
	143	} __attribute__ ((packed)) auxiliary;
	144	__u8 unused;
	145	__u8 count;
	146	struct ch_t seek_addr;
	147	struct chr_t search_arg;
	148	__u8 sector;
	149	__u16 length;
	150	} __attribute__ ((packed));
	151
f3eb5384 SW	152	struct LRE_eckd_data {
	153	struct {
	154	unsigned char orientation:2;
	155	unsigned char operation:6;
	156	} __attribute__ ((packed)) operation;
	157	struct {
	158	unsigned char length_valid:1;
	159	unsigned char length_scope:1;
	160	unsigned char imbedded_ccw_valid:1;
	161	unsigned char check_bytes:2;
	162	unsigned char imbedded_count_valid:1;
	163	unsigned char reserved:1;
	164	unsigned char read_count_suffix:1;
	165	} __attribute__ ((packed)) auxiliary;
	166	__u8 imbedded_ccw;
	167	__u8 count;
	168	struct ch_t seek_addr;
	169	struct chr_t search_arg;
	170	__u8 sector;
	171	__u16 length;
	172	__u8 imbedded_count;
	173	__u8 extended_operation;
	174	__u16 extended_parameter_length;
	175	__u8 extended_parameter[0];
	176	} __attribute__ ((packed));
	177
8e09f215 SW	178	/* Prefix data for format 0x00 and 0x01 */
	179	struct PFX_eckd_data {
	180	unsigned char format;
	181	struct {
f3eb5384	182	unsigned char define_extent:1;
8e09f215 SW	183	unsigned char time_stamp:1;
	184	unsigned char verify_base:1;
	185	unsigned char hyper_pav:1;
	186	unsigned char reserved:4;
	187	} __attribute__ ((packed)) validity;
	188	__u8 base_address;
	189	__u8 aux;
	190	__u8 base_lss;
	191	__u8 reserved[7];
f3eb5384 SW	192	struct DE_eckd_data define_extent;
f3eb5384 SW	193	struct LRE_eckd_data locate_record;
8e09f215 SW	194	} __attribute__ ((packed));
8e09f215 SW	195
1da177e4 LT	196	struct dasd_eckd_characteristics {
	197	__u16 cu_type;
	198	struct {
	199	unsigned char support:2;
	200	unsigned char async:1;
	201	unsigned char reserved:1;
	202	unsigned char cache_info:1;
	203	unsigned char model:3;
	204	} __attribute__ ((packed)) cu_model;
	205	__u16 dev_type;
	206	__u8 dev_model;
	207	struct {
	208	unsigned char mult_burst:1;
	209	unsigned char RT_in_LR:1;
	210	unsigned char reserved1:1;
	211	unsigned char RD_IN_LR:1;
	212	unsigned char reserved2:4;
	213	unsigned char reserved3:8;
	214	unsigned char defect_wr:1;
138c014d	215	unsigned char XRC_supported:1;
1da177e4 LT	216	unsigned char reserved4:1;
	217	unsigned char striping:1;
	218	unsigned char reserved5:4;
	219	unsigned char cfw:1;
	220	unsigned char reserved6:2;
	221	unsigned char cache:1;
	222	unsigned char dual_copy:1;
	223	unsigned char dfw:1;
	224	unsigned char reset_alleg:1;
	225	unsigned char sense_down:1;
	226	} __attribute__ ((packed)) facilities;
	227	__u8 dev_class;
	228	__u8 unit_type;
	229	__u16 no_cyl;
	230	__u16 trk_per_cyl;
	231	__u8 sec_per_trk;
	232	__u8 byte_per_track[3];
	233	__u16 home_bytes;
	234	__u8 formula;
	235	union {
	236	struct {
	237	__u8 f1;
	238	__u16 f2;
	239	__u16 f3;
	240	} __attribute__ ((packed)) f_0x01;
	241	struct {
	242	__u8 f1;
	243	__u8 f2;
	244	__u8 f3;
	245	__u8 f4;
	246	__u8 f5;
	247	} __attribute__ ((packed)) f_0x02;
	248	} __attribute__ ((packed)) factors;
	249	__u16 first_alt_trk;
	250	__u16 no_alt_trk;
	251	__u16 first_dia_trk;
	252	__u16 no_dia_trk;
	253	__u16 first_sup_trk;
	254	__u16 no_sup_trk;
	255	__u8 MDR_ID;
	256	__u8 OBR_ID;
	257	__u8 director;
	258	__u8 rd_trk_set;
	259	__u16 max_rec_zero;
	260	__u8 reserved1;
	261	__u8 RWANY_in_LR;
	262	__u8 factor6;
	263	__u8 factor7;
	264	__u8 factor8;
	265	__u8 reserved2[3];
b44b0ab3 SW	266	__u8 reserved3[6];
b44b0ab3 SW	267	__u32 long_no_cyl;
1da177e4 LT	268	} __attribute__ ((packed));
1da177e4 LT	269
4abb08c2 SW	270	/* elements of the configuration data */
4abb08c2 SW	271	struct dasd_ned {
1da177e4	272	struct {
4abb08c2 SW	273	__u8 identifier:2;
	274	__u8 token_id:1;
	275	__u8 sno_valid:1;
	276	__u8 subst_sno:1;
	277	__u8 recNED:1;
	278	__u8 emuNED:1;
	279	__u8 reserved:1;
	280	} __attribute__ ((packed)) flags;
	281	__u8 descriptor;
	282	__u8 dev_class;
	283	__u8 reserved;
	284	__u8 dev_type[6];
	285	__u8 dev_model[3];
	286	__u8 HDA_manufacturer[3];
	287	__u8 HDA_location[2];
	288	__u8 HDA_seqno[12];
	289	__u8 ID;
	290	__u8 unit_addr;
	291	} __attribute__ ((packed));
	292
	293	struct dasd_sneq {
1da177e4	294	struct {
4abb08c2 SW	295	__u8 identifier:2;
	296	__u8 reserved:6;
	297	} __attribute__ ((packed)) flags;
	298	__u8 res1;
	299	__u16 format;
	300	__u8 res2[4]; /* byte 4- 7 */
	301	__u8 sua_flags; /* byte 8 */
	302	__u8 base_unit_addr; /* byte 9 */
	303	__u8 res3[22]; /* byte 10-31 */
	304	} __attribute__ ((packed));
	305
	306	struct vd_sneq {
1da177e4	307	struct {
4abb08c2 SW	308	__u8 identifier:2;
	309	__u8 reserved:6;
	310	} __attribute__ ((packed)) flags;
	311	__u8 res1;
	312	__u16 format;
	313	__u8 res2[4]; /* byte 4- 7 */
	314	__u8 uit[16]; /* byte 8-23 */
	315	__u8 res3[8]; /* byte 24-31 */
	316	} __attribute__ ((packed));
	317
	318	struct dasd_gneq {
1da177e4	319	struct {
4abb08c2 SW	320	__u8 identifier:2;
	321	__u8 reserved:6;
	322	} __attribute__ ((packed)) flags;
	323	__u8 reserved[7];
	324	__u16 subsystemID;
	325	__u8 reserved2[22];
1da177e4 LT	326	} __attribute__ ((packed));
	327
	328	struct dasd_eckd_path {
	329	__u8 opm;
	330	__u8 ppm;
	331	__u8 npm;
	332	};
	333
8e09f215 SW	334	struct dasd_rssd_features {
	335	char feature[256];
	336	} __attribute__((packed));
	337
	338
1da177e4	339	/*
138c014d	340	* Perform Subsystem Function - Prepare for Read Subsystem Data
1da177e4 LT	341	*/
	342	struct dasd_psf_prssd_data {
	343	unsigned char order;
	344	unsigned char flags;
	345	unsigned char reserved[4];
	346	unsigned char suborder;
49fd38bd	347	unsigned char varies[5];
1da177e4 LT	348	} __attribute__ ((packed));
1da177e4 LT	349
40545573 HH	350	/*
	351	* Perform Subsystem Function - Set Subsystem Characteristics
	352	*/
	353	struct dasd_psf_ssc_data {
	354	unsigned char order;
	355	unsigned char flags;
	356	unsigned char cu_type[4];
	357	unsigned char suborder;
	358	unsigned char reserved[59];
	359	} __attribute__((packed));
	360
8e09f215 SW	361
	362	/*
	363	* some structures and definitions for alias handling
	364	*/
	365	struct dasd_unit_address_configuration {
	366	struct {
	367	char ua_type;
	368	char base_ua;
	369	} unit[256];
	370	} __attribute__((packed));
	371
	372
	373	#define MAX_DEVICES_PER_LCU 256
	374
	375	/* flags on the LCU */
	376	#define NEED_UAC_UPDATE 0x01
	377	#define UPDATE_PENDING 0x02
	378
	379	enum pavtype {NO_PAV, BASE_PAV, HYPER_PAV};
	380
	381
	382	struct alias_root {
	383	struct list_head serverlist;
	384	spinlock_t lock;
	385	};
	386
	387	struct alias_server {
	388	struct list_head server;
	389	struct dasd_uid uid;
	390	struct list_head lculist;
	391	};
	392
	393	struct summary_unit_check_work_data {
	394	char reason;
	395	struct dasd_device *device;
	396	struct work_struct worker;
	397	};
	398
	399	struct read_uac_work_data {
	400	struct dasd_device *device;
	401	struct delayed_work dwork;
	402	};
	403
	404	struct alias_lcu {
	405	struct list_head lcu;
	406	struct dasd_uid uid;
	407	enum pavtype pav;
	408	char flags;
	409	spinlock_t lock;
	410	struct list_head grouplist;
	411	struct list_head active_devices;
	412	struct list_head inactive_devices;
	413	struct dasd_unit_address_configuration *uac;
	414	struct summary_unit_check_work_data suc_data;
	415	struct read_uac_work_data ruac_data;
	416	struct dasd_ccw_req *rsu_cqr;
f4ac1d02	417	struct completion lcu_setup;
8e09f215 SW	418	};
	419
	420	struct alias_pav_group {
	421	struct list_head group;
	422	struct dasd_uid uid;
	423	struct alias_lcu *lcu;
	424	struct list_head baselist;
	425	struct list_head aliaslist;
	426	struct dasd_device *next;
	427	};
	428
8e09f215 SW	429	struct dasd_eckd_private {
8e09f215 SW	430	struct dasd_eckd_characteristics rdc_data;
4abb08c2 SW	431	u8 *conf_data;
	432	int conf_len;
	433	/* pointers to specific parts in the conf_data */
	434	struct dasd_ned *ned;
	435	struct dasd_sneq *sneq;
	436	struct vd_sneq *vdsneq;
	437	struct dasd_gneq *gneq;
	438
8e09f215 SW	439	struct dasd_eckd_path path_data;
	440	struct eckd_count count_area[5];
	441	int init_cqr_status;
	442	int uses_cdl;
	443	struct attrib_data_t attrib; /* e.g. cache operations */
	444	struct dasd_rssd_features features;
b44b0ab3	445	u32 real_cyl;
8e09f215 SW	446
	447	/* alias managemnet */
	448	struct dasd_uid uid;
	449	struct alias_pav_group *pavgroup;
	450	struct alias_lcu *lcu;
	451	int count;
	452	};
	453
	454
	455
	456	int dasd_alias_make_device_known_to_lcu(struct dasd_device *);
	457	void dasd_alias_disconnect_device_from_lcu(struct dasd_device *);
	458	int dasd_alias_add_device(struct dasd_device *);
	459	int dasd_alias_remove_device(struct dasd_device *);
	460	struct dasd_device dasd_alias_get_start_dev(struct dasd_device );
	461	void dasd_alias_handle_summary_unit_check(struct dasd_device , struct irb );
	462	void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *);
f4ac1d02 SW	463	void dasd_alias_lcu_setup_complete(struct dasd_device *);
f4ac1d02 SW	464	void dasd_alias_wait_for_lcu_setup(struct dasd_device *);
501183f2	465	int dasd_alias_update_add_device(struct dasd_device *);
1da177e4	466	#endif /* DASD_ECKD_H */