drivers/s390/block/dasd_diag.h

   1 /*
   2  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
   3  * Based on.......: linux/drivers/s390/block/mdisk.h
   4  * ...............: by Hartmunt Penner <hpenner@de.ibm.com>
   5  * Bugreports.to..: <Linux390@de.ibm.com>
   6  * Copyright IBM Corp. 1999, 2000
   7  *
   8  */
   9
  10 #define MDSK_WRITE_REQ 0x01
  11 #define MDSK_READ_REQ  0x02
  12
  13 #define INIT_BIO        0x00
  14 #define RW_BIO          0x01
  15 #define TERM_BIO        0x02
  16
  17 #define DEV_CLASS_FBA   0x01
  18 #define DEV_CLASS_ECKD  0x04
  19
  20 #define DASD_DIAG_CODE_31BIT            0x03
  21 #define DASD_DIAG_CODE_64BIT            0x07
  22
  23 #define DASD_DIAG_RWFLAG_ASYNC          0x02
  24 #define DASD_DIAG_RWFLAG_NOCACHE        0x01
  25
  26 #define DASD_DIAG_FLAGA_FORMAT_64BIT    0x80
  27
  28 struct dasd_diag_characteristics {
  29         u16 dev_nr;
  30         u16 rdc_len;
  31         u8 vdev_class;
  32         u8 vdev_type;
  33         u8 vdev_status;
  34         u8 vdev_flags;
  35         u8 rdev_class;
  36         u8 rdev_type;
  37         u8 rdev_model;
  38         u8 rdev_features;
  39 } __attribute__ ((packed, aligned(4)));
  40
  41 #define DASD_DIAG_FLAGA_DEFAULT         DASD_DIAG_FLAGA_FORMAT_64BIT
  42
  43 typedef u64 blocknum_t;
  44 typedef s64 sblocknum_t;
  45
  46 struct dasd_diag_bio {
  47         u8 type;
  48         u8 status;
  49         u8 spare1[2];
  50         u32 alet;
  51         blocknum_t block_number;
  52         void *buffer;
  53 } __attribute__ ((packed, aligned(8)));
  54
  55 struct dasd_diag_init_io {
  56         u16 dev_nr;
  57         u8 flaga;
  58         u8 spare1[21];
  59         u32 block_size;
  60         u8 spare2[4];
  61         blocknum_t offset;
  62         sblocknum_t start_block;
  63         blocknum_t end_block;
  64         u8  spare3[8];
  65 } __attribute__ ((packed, aligned(8)));
  66
  67 struct dasd_diag_rw_io {
  68         u16 dev_nr;
  69         u8  flaga;
  70         u8  spare1[21];
  71         u8  key;
  72         u8  flags;
  73         u8  spare2[2];
  74         u32 block_count;
  75         u32 alet;
  76         u8  spare3[4];
  77         u64 interrupt_params;
  78         struct dasd_diag_bio *bio_list;
  79         u8  spare4[8];
  80 } __attribute__ ((packed, aligned(8)));