1/*
  2 * File...........: linux/drivers/s390/block/dasd_diag.h
  3 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
  4 * Based on.......: linux/drivers/s390/block/mdisk.h
  5 * ...............: by Hartmunt Penner <hpenner@de.ibm.com>
  6 * Bugreports.to..: <Linux390@de.ibm.com>
  7 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
  8 *
  9 */
 10
 11#define MDSK_WRITE_REQ 0x01
 12#define MDSK_READ_REQ  0x02
 13
 14#define INIT_BIO	0x00
 15#define RW_BIO		0x01
 16#define TERM_BIO	0x02
 17
 18#define DEV_CLASS_FBA	0x01
 19#define DEV_CLASS_ECKD	0x04
 20
 21#define DASD_DIAG_CODE_31BIT		0x03
 22#define DASD_DIAG_CODE_64BIT		0x07
 23
 24#define DASD_DIAG_RWFLAG_ASYNC		0x02
 25#define DASD_DIAG_RWFLAG_NOCACHE	0x01
 26
 27#define DASD_DIAG_FLAGA_FORMAT_64BIT	0x80
 28
 29struct dasd_diag_characteristics {
 30	u16 dev_nr;
 31	u16 rdc_len;
 32	u8 vdev_class;
 33	u8 vdev_type;
 34	u8 vdev_status;
 35	u8 vdev_flags;
 36	u8 rdev_class;
 37	u8 rdev_type;
 38	u8 rdev_model;
 39	u8 rdev_features;
 40} __attribute__ ((packed, aligned(4)));
 41
 42
 43#ifdef CONFIG_64BIT
 44#define DASD_DIAG_FLAGA_DEFAULT		DASD_DIAG_FLAGA_FORMAT_64BIT
 45
 46typedef u64 blocknum_t;
 47typedef s64 sblocknum_t;
 48
 49struct dasd_diag_bio {
 50	u8 type;
 51	u8 status;
 52	u8 spare1[2];
 53	u32 alet;
 54	blocknum_t block_number;
 55	void *buffer;
 56} __attribute__ ((packed, aligned(8)));
 57
 58struct dasd_diag_init_io {
 59	u16 dev_nr;
 60	u8 flaga;
 61	u8 spare1[21];
 62	u32 block_size;
 63	u8 spare2[4];
 64	blocknum_t offset;
 65	sblocknum_t start_block;
 66	blocknum_t end_block;
 67	u8  spare3[8];
 68} __attribute__ ((packed, aligned(8)));
 69
 70struct dasd_diag_rw_io {
 71	u16 dev_nr;
 72	u8  flaga;
 73	u8  spare1[21];
 74	u8  key;
 75	u8  flags;
 76	u8  spare2[2];
 77	u32 block_count;
 78	u32 alet;
 79	u8  spare3[4];
 80	u64 interrupt_params;
 81	struct dasd_diag_bio *bio_list;
 82	u8  spare4[8];
 83} __attribute__ ((packed, aligned(8)));
 84#else /* CONFIG_64BIT */
 85#define DASD_DIAG_FLAGA_DEFAULT		0x0
 86
 87typedef u32 blocknum_t;
 88typedef s32 sblocknum_t;
 89
 90struct dasd_diag_bio {
 91	u8 type;
 92	u8 status;
 93	u16 spare1;
 94	blocknum_t block_number;
 95	u32 alet;
 96	void *buffer;
 97} __attribute__ ((packed, aligned(8)));
 98
 99struct dasd_diag_init_io {
100	u16 dev_nr;
101	u8 flaga;
102	u8 spare1[21];
103	u32 block_size;
104	blocknum_t offset;
105	sblocknum_t start_block;
106	blocknum_t end_block;
107	u8 spare2[24];
108} __attribute__ ((packed, aligned(8)));
109
110struct dasd_diag_rw_io {
111	u16 dev_nr;
112	u8 flaga;
113	u8 spare1[21];
114	u8 key;
115	u8 flags;
116	u8 spare2[2];
117	u32 block_count;
118	u32 alet;
119	struct dasd_diag_bio *bio_list;
120	u32 interrupt_params;
121	u8 spare3[20];
122} __attribute__ ((packed, aligned(8)));
123#endif /* CONFIG_64BIT */