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  * $Revision: 1.6 $
  10  */
  11
  12 #define MDSK_WRITE_REQ 0x01
  13 #define MDSK_READ_REQ  0x02
  14
  15 #define INIT_BIO        0x00
  16 #define RW_BIO          0x01
  17 #define TERM_BIO        0x02
  18
  19 #define DEV_CLASS_FBA   0x01
  20 #define DEV_CLASS_ECKD  0x04
  21
  22 struct dasd_diag_characteristics {
  23         u16 dev_nr;
  24         u16 rdc_len;
  25         u8 vdev_class;
  26         u8 vdev_type;
  27         u8 vdev_status;
  28         u8 vdev_flags;
  29         u8 rdev_class;
  30         u8 rdev_type;
  31         u8 rdev_model;
  32         u8 rdev_features;
  33 } __attribute__ ((packed, aligned(4)));
  34
  35 struct dasd_diag_bio {
  36         u8 type;
  37         u8 status;
  38         u16 spare1;
  39         u32 block_number;
  40         u32 alet;
  41         u32 buffer;
  42 } __attribute__ ((packed, aligned(8)));
  43
  44 struct dasd_diag_init_io {
  45         u16 dev_nr;
  46         u16 spare1[11];
  47         u32 block_size;
  48         u32 offset;
  49         u32 start_block;
  50         u32 end_block;
  51         u32 spare2[6];
  52 } __attribute__ ((packed, aligned(8)));
  53
  54 struct dasd_diag_rw_io {
  55         u16 dev_nr;
  56         u16 spare1[11];
  57         u8 key;
  58         u8 flags;
  59         u16 spare2;
  60         u32 block_count;
  61         u32 alet;
  62         u32 bio_list;
  63         u32 interrupt_params;
  64         u32 spare3[5];
  65 } __attribute__ ((packed, aligned(8)));
  66