[deliverable/linux.git] / arch / s390 / include / asm / vtoc.h

/*
 * include/asm-s390/vtoc.h
 *
 * This file contains volume label definitions for DASD devices.
 *
 * (C) Copyright IBM Corp. 2005
 *
 * Author(s): Volker Sameske <sameske@de.ibm.com>
 *
 */

#ifndef _ASM_S390_VTOC_H
#define _ASM_S390_VTOC_H

#include <linux/types.h>

struct vtoc_ttr
{
	__u16 tt;
	__u8 r;
} __attribute__ ((packed));

struct vtoc_cchhb
{
	__u16 cc;
	__u16 hh;
	__u8 b;
} __attribute__ ((packed));

struct vtoc_cchh
{
	__u16 cc;
	__u16 hh;
} __attribute__ ((packed));

struct vtoc_labeldate
{
	__u8 year;
	__u16 day;
} __attribute__ ((packed));

struct vtoc_volume_label_cdl
{
	char volkey[4];		/* volume key = volume label */
	char vollbl[4];		/* volume label */
	char volid[6];		/* volume identifier */
	__u8 security;		/* security byte */
	struct vtoc_cchhb vtoc;	/* VTOC address */
	char res1[5];		/* reserved */
	char cisize[4];		/* CI-size for FBA,... */
				/* ...blanks for CKD */
	char blkperci[4];	/* no of blocks per CI (FBA), blanks for CKD */
	char labperci[4];	/* no of labels per CI (FBA), blanks for CKD */
	char res2[4];		/* reserved */
	char lvtoc[14];		/* owner code for LVTOC */
	char res3[29];		/* reserved */
} __attribute__ ((packed));

struct vtoc_volume_label_ldl {
	char vollbl[4];		/* volume label */
	char volid[6];		/* volume identifier */
	char res3[69];		/* reserved */
	char ldl_version;	/* version number, valid for ldl format */
	__u64 formatted_blocks; /* valid when ldl_version >= f2  */
} __attribute__ ((packed));

struct vtoc_extent
{
	__u8 typeind;			/* extent type indicator */
	__u8 seqno;			/* extent sequence number */
	struct vtoc_cchh llimit;	/* starting point of this extent */
	struct vtoc_cchh ulimit;	/* ending point of this extent */
} __attribute__ ((packed));

struct vtoc_dev_const
{
	__u16 DS4DSCYL;	/* number of logical cyls */
	__u16 DS4DSTRK;	/* number of tracks in a logical cylinder */
	__u16 DS4DEVTK;	/* device track length */
	__u8 DS4DEVI;	/* non-last keyed record overhead */
	__u8 DS4DEVL;	/* last keyed record overhead */
	__u8 DS4DEVK;	/* non-keyed record overhead differential */
	__u8 DS4DEVFG;	/* flag byte */
	__u16 DS4DEVTL;	/* device tolerance */
	__u8 DS4DEVDT;	/* number of DSCB's per track */
	__u8 DS4DEVDB;	/* number of directory blocks per track */
} __attribute__ ((packed));

struct vtoc_format1_label
{
	char DS1DSNAM[44];	/* data set name */
	__u8 DS1FMTID;		/* format identifier */
	char DS1DSSN[6];	/* data set serial number */
	__u16 DS1VOLSQ;		/* volume sequence number */
	struct vtoc_labeldate DS1CREDT; /* creation date: ydd */
	struct vtoc_labeldate DS1EXPDT; /* expiration date */
	__u8 DS1NOEPV;		/* number of extents on volume */
	__u8 DS1NOBDB;		/* no. of bytes used in last direction blk */
	__u8 DS1FLAG1;		/* flag 1 */
	char DS1SYSCD[13];	/* system code */
	struct vtoc_labeldate DS1REFD; /* date last referenced	*/
	__u8 DS1SMSFG;		/* system managed storage indicators */
	__u8 DS1SCXTF;		/* sec. space extension flag byte */
	__u16 DS1SCXTV;		/* secondary space extension value */
	__u8 DS1DSRG1;		/* data set organisation byte 1 */
	__u8 DS1DSRG2;		/* data set organisation byte 2 */
	__u8 DS1RECFM;		/* record format */
	__u8 DS1OPTCD;		/* option code */
	__u16 DS1BLKL;		/* block length */
	__u16 DS1LRECL;		/* record length */
	__u8 DS1KEYL;		/* key length */
	__u16 DS1RKP;		/* relative key position */
	__u8 DS1DSIND;		/* data set indicators */
	__u8 DS1SCAL1;		/* secondary allocation flag byte */
	char DS1SCAL3[3];	/* secondary allocation quantity */
	struct vtoc_ttr DS1LSTAR; /* last used track and block on track */
	__u16 DS1TRBAL;		/* space remaining on last used track */
	__u16 res1;		/* reserved */
	struct vtoc_extent DS1EXT1; /* first extent description */
	struct vtoc_extent DS1EXT2; /* second extent description */
	struct vtoc_extent DS1EXT3; /* third extent description */
	struct vtoc_cchhb DS1PTRDS; /* possible pointer to f2 or f3 DSCB */
} __attribute__ ((packed));

struct vtoc_format4_label
{
	char DS4KEYCD[44];	/* key code for VTOC labels: 44 times 0x04 */
	__u8 DS4IDFMT;		/* format identifier */
	struct vtoc_cchhb DS4HPCHR; /* highest address of a format 1 DSCB */
	__u16 DS4DSREC;		/* number of available DSCB's */
	struct vtoc_cchh DS4HCCHH; /* CCHH of next available alternate track */
	__u16 DS4NOATK;		/* number of remaining alternate tracks */
	__u8 DS4VTOCI;		/* VTOC indicators */
	__u8 DS4NOEXT;		/* number of extents in VTOC */
	__u8 DS4SMSFG;		/* system managed storage indicators */
	__u8 DS4DEVAC;		/* number of alternate cylinders.
				 * Subtract from first two bytes of
				 * DS4DEVSZ to get number of usable
				 * cylinders. can be zero. valid
				 * only if DS4DEVAV on. */
	struct vtoc_dev_const DS4DEVCT;	/* device constants */
	char DS4AMTIM[8];	/* VSAM time stamp */
	char DS4AMCAT[3];	/* VSAM catalog indicator */
	char DS4R2TIM[8];	/* VSAM volume/catalog match time stamp */
	char res1[5];		/* reserved */
	char DS4F6PTR[5];	/* pointer to first format 6 DSCB */
	struct vtoc_extent DS4VTOCE; /* VTOC extent description */
	char res2[10];		/* reserved */
	__u8 DS4EFLVL;		/* extended free-space management level */
	struct vtoc_cchhb DS4EFPTR; /* pointer to extended free-space info */
	char res3;		/* reserved */
	__u32 DS4DCYL;		/* number of logical cyls */
	char res4[2];		/* reserved */
	__u8 DS4DEVF2;		/* device flags */
	char res5;		/* reserved */
} __attribute__ ((packed));

struct vtoc_ds5ext
{
	__u16 t;	/* RTA of the first track of free extent */
	__u16 fc;	/* number of whole cylinders in free ext. */
	__u8 ft;	/* number of remaining free tracks */
} __attribute__ ((packed));

struct vtoc_format5_label
{
	char DS5KEYID[4];	/* key identifier */
	struct vtoc_ds5ext DS5AVEXT; /* first available (free-space) extent. */
	struct vtoc_ds5ext DS5EXTAV[7]; /* seven available extents */
	__u8 DS5FMTID;		/* format identifier */
	struct vtoc_ds5ext DS5MAVET[18]; /* eighteen available extents */
	struct vtoc_cchhb DS5PTRDS; /* pointer to next format5 DSCB */
} __attribute__ ((packed));

struct vtoc_ds7ext
{
	__u32 a; /* starting RTA value */
	__u32 b; /* ending RTA value + 1 */
} __attribute__ ((packed));

struct vtoc_format7_label
{
	char DS7KEYID[4];	/* key identifier */
	struct vtoc_ds7ext DS7EXTNT[5]; /* space for 5 extent descriptions */
	__u8 DS7FMTID;		/* format identifier */
	struct vtoc_ds7ext DS7ADEXT[11]; /* space for 11 extent descriptions */
	char res1[2];		/* reserved */
	struct vtoc_cchhb DS7PTRDS; /* pointer to next FMT7 DSCB */
} __attribute__ ((packed));

struct vtoc_cms_label {
	__u8 label_id[4];		/* Label identifier */
	__u8 vol_id[6];		/* Volid */
	__u16 version_id;		/* Version identifier */
	__u32 block_size;		/* Disk block size */
	__u32 origin_ptr;		/* Disk origin pointer */
	__u32 usable_count;	/* Number of usable cylinders/blocks */
	__u32 formatted_count;	/* Maximum number of formatted cylinders/
				 * blocks */
	__u32 block_count;	/* Disk size in CMS blocks */
	__u32 used_count;		/* Number of CMS blocks in use */
	__u32 fst_size;		/* File Status Table (FST) size */
	__u32 fst_count;		/* Number of FSTs per CMS block */
	__u8 format_date[6];	/* Disk FORMAT date */
	__u8 reserved1[2];
	__u32 disk_offset;	/* Disk offset when reserved*/
	__u32 map_block;		/* Allocation Map Block with next hole */
	__u32 hblk_disp;		/* Displacement into HBLK data of next hole */
	__u32 user_disp;		/* Displacement into user part of Allocation
				 * map */
	__u8 reserved2[4];
	__u8 segment_name[8];	/* Name of shared segment */
} __attribute__ ((packed));

#endif /* _ASM_S390_VTOC_H */
Commit	Line	Data
4cd5b9f6 PO	1	/*
	2	* include/asm-s390/vtoc.h
	3	*
	4	* This file contains volume label definitions for DASD devices.
	5	*
	6	* (C) Copyright IBM Corp. 2005
	7	*
	8	* Author(s): Volker Sameske <sameske@de.ibm.com>
	9	*
	10	*/
	11
	12	#ifndef _ASM_S390_VTOC_H
	13	#define _ASM_S390_VTOC_H
1da177e4	14
1da177e4	15	#include <linux/types.h>
1da177e4	16
4cd5b9f6	17	struct vtoc_ttr
1da177e4	18	{
4cd5b9f6 PO	19	__u16 tt;
	20	__u8 r;
	21	} __attribute__ ((packed));
1da177e4	22
4cd5b9f6	23	struct vtoc_cchhb
1da177e4	24	{
4cd5b9f6 PO	25	__u16 cc;
	26	__u16 hh;
	27	__u8 b;
	28	} __attribute__ ((packed));
1da177e4	29
4cd5b9f6	30	struct vtoc_cchh
1da177e4	31	{
4cd5b9f6 PO	32	__u16 cc;
	33	__u16 hh;
	34	} __attribute__ ((packed));
1da177e4	35
4cd5b9f6	36	struct vtoc_labeldate
1da177e4	37	{
4cd5b9f6 PO	38	__u8 year;
	39	__u16 day;
	40	} __attribute__ ((packed));
1da177e4	41
b44b0ab3	42	struct vtoc_volume_label_cdl
1da177e4	43	{
4cd5b9f6 PO	44	char volkey[4]; /* volume key = volume label */
	45	char vollbl[4]; /* volume label */
	46	char volid[6]; /* volume identifier */
	47	__u8 security; /* security byte */
	48	struct vtoc_cchhb vtoc; /* VTOC address */
	49	char res1[5]; /* reserved */
	50	char cisize[4]; /* CI-size for FBA,... */
	51	/* ...blanks for CKD */
	52	char blkperci[4]; /* no of blocks per CI (FBA), blanks for CKD */
	53	char labperci[4]; /* no of labels per CI (FBA), blanks for CKD */
	54	char res2[4]; /* reserved */
	55	char lvtoc[14]; /* owner code for LVTOC */
	56	char res3[29]; /* reserved */
	57	} __attribute__ ((packed));
	58
b44b0ab3 SW	59	struct vtoc_volume_label_ldl {
	60	char vollbl[4]; /* volume label */
	61	char volid[6]; /* volume identifier */
	62	char res3[69]; /* reserved */
	63	char ldl_version; /* version number, valid for ldl format */
	64	__u64 formatted_blocks; /* valid when ldl_version >= f2 */
	65	} __attribute__ ((packed));
	66
4cd5b9f6	67	struct vtoc_extent
1da177e4	68	{
4cd5b9f6 PO	69	__u8 typeind; /* extent type indicator */
	70	__u8 seqno; /* extent sequence number */
	71	struct vtoc_cchh llimit; /* starting point of this extent */
	72	struct vtoc_cchh ulimit; /* ending point of this extent */
	73	} __attribute__ ((packed));
1da177e4	74
4cd5b9f6	75	struct vtoc_dev_const
1da177e4	76	{
4cd5b9f6 PO	77	__u16 DS4DSCYL; /* number of logical cyls */
	78	__u16 DS4DSTRK; /* number of tracks in a logical cylinder */
	79	__u16 DS4DEVTK; /* device track length */
	80	__u8 DS4DEVI; /* non-last keyed record overhead */
	81	__u8 DS4DEVL; /* last keyed record overhead */
	82	__u8 DS4DEVK; /* non-keyed record overhead differential */
	83	__u8 DS4DEVFG; /* flag byte */
	84	__u16 DS4DEVTL; /* device tolerance */
	85	__u8 DS4DEVDT; /* number of DSCB's per track */
	86	__u8 DS4DEVDB; /* number of directory blocks per track */
	87	} __attribute__ ((packed));
	88
	89	struct vtoc_format1_label
1da177e4	90	{
4cd5b9f6 PO	91	char DS1DSNAM[44]; /* data set name */
	92	__u8 DS1FMTID; /* format identifier */
	93	char DS1DSSN[6]; /* data set serial number */
	94	__u16 DS1VOLSQ; /* volume sequence number */
	95	struct vtoc_labeldate DS1CREDT; /* creation date: ydd */
	96	struct vtoc_labeldate DS1EXPDT; /* expiration date */
	97	__u8 DS1NOEPV; /* number of extents on volume */
	98	__u8 DS1NOBDB; /* no. of bytes used in last direction blk */
	99	__u8 DS1FLAG1; /* flag 1 */
	100	char DS1SYSCD[13]; /* system code */
	101	struct vtoc_labeldate DS1REFD; /* date last referenced */
	102	__u8 DS1SMSFG; /* system managed storage indicators */
	103	__u8 DS1SCXTF; /* sec. space extension flag byte */
	104	__u16 DS1SCXTV; /* secondary space extension value */
	105	__u8 DS1DSRG1; /* data set organisation byte 1 */
	106	__u8 DS1DSRG2; /* data set organisation byte 2 */
	107	__u8 DS1RECFM; /* record format */
	108	__u8 DS1OPTCD; /* option code */
	109	__u16 DS1BLKL; /* block length */
	110	__u16 DS1LRECL; /* record length */
	111	__u8 DS1KEYL; /* key length */
	112	__u16 DS1RKP; /* relative key position */
	113	__u8 DS1DSIND; /* data set indicators */
	114	__u8 DS1SCAL1; /* secondary allocation flag byte */
	115	char DS1SCAL3[3]; /* secondary allocation quantity */
	116	struct vtoc_ttr DS1LSTAR; /* last used track and block on track */
	117	__u16 DS1TRBAL; /* space remaining on last used track */
	118	__u16 res1; /* reserved */
	119	struct vtoc_extent DS1EXT1; /* first extent description */
	120	struct vtoc_extent DS1EXT2; /* second extent description */
	121	struct vtoc_extent DS1EXT3; /* third extent description */
	122	struct vtoc_cchhb DS1PTRDS; /* possible pointer to f2 or f3 DSCB */
	123	} __attribute__ ((packed));
	124
	125	struct vtoc_format4_label
1da177e4	126	{
4cd5b9f6 PO	127	char DS4KEYCD[44]; /* key code for VTOC labels: 44 times 0x04 */
	128	__u8 DS4IDFMT; /* format identifier */
	129	struct vtoc_cchhb DS4HPCHR; /* highest address of a format 1 DSCB */
	130	__u16 DS4DSREC; /* number of available DSCB's */
	131	struct vtoc_cchh DS4HCCHH; /* CCHH of next available alternate track */
	132	__u16 DS4NOATK; /* number of remaining alternate tracks */
	133	__u8 DS4VTOCI; /* VTOC indicators */
	134	__u8 DS4NOEXT; /* number of extents in VTOC */
	135	__u8 DS4SMSFG; /* system managed storage indicators */
	136	__u8 DS4DEVAC; /* number of alternate cylinders.
	137	* Subtract from first two bytes of
	138	* DS4DEVSZ to get number of usable
	139	* cylinders. can be zero. valid
	140	* only if DS4DEVAV on. */
	141	struct vtoc_dev_const DS4DEVCT; /* device constants */
	142	char DS4AMTIM[8]; /* VSAM time stamp */
	143	char DS4AMCAT[3]; /* VSAM catalog indicator */
	144	char DS4R2TIM[8]; /* VSAM volume/catalog match time stamp */
	145	char res1[5]; /* reserved */
	146	char DS4F6PTR[5]; /* pointer to first format 6 DSCB */
	147	struct vtoc_extent DS4VTOCE; /* VTOC extent description */
	148	char res2[10]; /* reserved */
	149	__u8 DS4EFLVL; /* extended free-space management level */
	150	struct vtoc_cchhb DS4EFPTR; /* pointer to extended free-space info */
b44b0ab3 SW	151	char res3; /* reserved */
	152	__u32 DS4DCYL; /* number of logical cyls */
	153	char res4[2]; /* reserved */
	154	__u8 DS4DEVF2; /* device flags */
	155	char res5; /* reserved */
4cd5b9f6 PO	156	} __attribute__ ((packed));
	157
	158	struct vtoc_ds5ext
1da177e4	159	{
4cd5b9f6 PO	160	__u16 t; /* RTA of the first track of free extent */
	161	__u16 fc; /* number of whole cylinders in free ext. */
	162	__u8 ft; /* number of remaining free tracks */
	163	} __attribute__ ((packed));
1da177e4	164
4cd5b9f6	165	struct vtoc_format5_label
1da177e4	166	{
4cd5b9f6 PO	167	char DS5KEYID[4]; /* key identifier */
	168	struct vtoc_ds5ext DS5AVEXT; /* first available (free-space) extent. */
	169	struct vtoc_ds5ext DS5EXTAV[7]; /* seven available extents */
	170	__u8 DS5FMTID; /* format identifier */
	171	struct vtoc_ds5ext DS5MAVET[18]; /* eighteen available extents */
	172	struct vtoc_cchhb DS5PTRDS; /* pointer to next format5 DSCB */
	173	} __attribute__ ((packed));
	174
	175	struct vtoc_ds7ext
1da177e4	176	{
4cd5b9f6 PO	177	__u32 a; /* starting RTA value */
	178	__u32 b; /* ending RTA value + 1 */
	179	} __attribute__ ((packed));
1da177e4	180
4cd5b9f6	181	struct vtoc_format7_label
1da177e4	182	{
4cd5b9f6 PO	183	char DS7KEYID[4]; /* key identifier */
	184	struct vtoc_ds7ext DS7EXTNT[5]; /* space for 5 extent descriptions */
	185	__u8 DS7FMTID; /* format identifier */
	186	struct vtoc_ds7ext DS7ADEXT[11]; /* space for 11 extent descriptions */
	187	char res1[2]; /* reserved */
	188	struct vtoc_cchhb DS7PTRDS; /* pointer to next FMT7 DSCB */
	189	} __attribute__ ((packed));
	190
56dc6a88	191	struct vtoc_cms_label {
56b192c3 DW	192	__u8 label_id[4]; /* Label identifier */
	193	__u8 vol_id[6]; /* Volid */
	194	__u16 version_id; /* Version identifier */
	195	__u32 block_size; /* Disk block size */
	196	__u32 origin_ptr; /* Disk origin pointer */
	197	__u32 usable_count; /* Number of usable cylinders/blocks */
	198	__u32 formatted_count; /* Maximum number of formatted cylinders/
56dc6a88	199	* blocks */
56b192c3 DW	200	__u32 block_count; /* Disk size in CMS blocks */
	201	__u32 used_count; /* Number of CMS blocks in use */
	202	__u32 fst_size; /* File Status Table (FST) size */
	203	__u32 fst_count; /* Number of FSTs per CMS block */
	204	__u8 format_date[6]; /* Disk FORMAT date */
	205	__u8 reserved1[2];
	206	__u32 disk_offset; /* Disk offset when reserved*/
	207	__u32 map_block; /* Allocation Map Block with next hole */
	208	__u32 hblk_disp; /* Displacement into HBLK data of next hole */
	209	__u32 user_disp; /* Displacement into user part of Allocation
56dc6a88	210	* map */
56b192c3 DW	211	__u8 reserved2[4];
56b192c3 DW	212	__u8 segment_name[8]; /* Name of shared segment */
56dc6a88 PO	213	} __attribute__ ((packed));
56dc6a88 PO	214
4cd5b9f6	215	#endif /* _ASM_S390_VTOC_H */