s390/block/dasd_diag.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
0004  * Based on.......: linux/drivers/s390/block/mdisk.h
0005  * ...............: by Hartmunt Penner <hpenner@de.ibm.com>
0006  * Bugreports.to..: <Linux390@de.ibm.com>
0007  * Copyright IBM Corp. 1999, 2000
0008  *
0009  */
0010
0011 #define MDSK_WRITE_REQ 0x01
0012 #define MDSK_READ_REQ  0x02
0013
0014 #define INIT_BIO    0x00
0015 #define RW_BIO      0x01
0016 #define TERM_BIO    0x02
0017
0018 #define DEV_CLASS_FBA   0x01
0019 #define DEV_CLASS_ECKD  0x04
0020
0021 #define DASD_DIAG_CODE_31BIT        0x03
0022 #define DASD_DIAG_CODE_64BIT        0x07
0023
0024 #define DASD_DIAG_RWFLAG_ASYNC      0x02
0025 #define DASD_DIAG_RWFLAG_NOCACHE    0x01
0026
0027 #define DASD_DIAG_FLAGA_FORMAT_64BIT    0x80
0028
0029 struct dasd_diag_characteristics {
0030     u16 dev_nr;
0031     u16 rdc_len;
0032     u8 vdev_class;
0033     u8 vdev_type;
0034     u8 vdev_status;
0035     u8 vdev_flags;
0036     u8 rdev_class;
0037     u8 rdev_type;
0038     u8 rdev_model;
0039     u8 rdev_features;
0040 } __attribute__ ((packed, aligned(4)));
0041
0042 #define DASD_DIAG_FLAGA_DEFAULT     DASD_DIAG_FLAGA_FORMAT_64BIT
0043
0044 typedef u64 blocknum_t;
0045 typedef s64 sblocknum_t;
0046
0047 struct dasd_diag_bio {
0048     u8 type;
0049     u8 status;
0050     u8 spare1[2];
0051     u32 alet;
0052     blocknum_t block_number;
0053     void *buffer;
0054 } __attribute__ ((packed, aligned(8)));
0055
0056 struct dasd_diag_init_io {
0057     u16 dev_nr;
0058     u8 flaga;
0059     u8 spare1[21];
0060     u32 block_size;
0061     u8 spare2[4];
0062     blocknum_t offset;
0063     sblocknum_t start_block;
0064     blocknum_t end_block;
0065     u8  spare3[8];
0066 } __attribute__ ((packed, aligned(8)));
0067
0068 struct dasd_diag_rw_io {
0069     u16 dev_nr;
0070     u8  flaga;
0071     u8  spare1[21];
0072     u8  key;
0073     u8  flags;
0074     u8  spare2[2];
0075     u32 block_count;
0076     u32 alet;
0077     u8  spare3[4];
0078     u64 interrupt_params;
0079     struct dasd_diag_bio *bio_list;
0080     u8  spare4[8];
0081 } __attribute__ ((packed, aligned(8)));