drivers/s390/block/dasd_diag.h

   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
  29 struct 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
  46 typedef u64 blocknum_t;
  47 typedef s64 sblocknum_t;
  48
  49 struct 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
  58 struct 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
  70 struct 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
  87 typedef u32 blocknum_t;
  88 typedef s32 sblocknum_t;
  89
  90 struct 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
  99 struct 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
 110 struct 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 */