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/*
* zipl - zSeries Initial Program Loader tool
*
* DASD FBA specific functions
*
* Copyright IBM Corp. 2013, 2017
*
* s390-tools is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*
*/
#ifndef FBA_H
#define FBA_H
#include "error.h"
#include "libc.h"
#include "stage2.h"
/* CCW COMMANDS */
#define DASD_FBA_CCW_LOCATE 0x43
#define DASD_FBA_CCW_LR 0x06
#define DASD_FBA_CCW_DE 0x63
#define DASD_FBA_CCW_WRITE 0x41
#define DASD_FBA_CCW_READ 0x42
#define MAX_BLOCKCT 128
struct DE_fba_data {
struct {
unsigned char perm:2; /* Permissions on this extent */
unsigned char zero:2; /* Must be zero */
unsigned char da:1; /* usually zero */
unsigned char diag:1; /* allow diagnose */
unsigned char zero2:2; /* zero */
} __packed mask;
uint8_t zero; /* Must be zero */
uint16_t blk_size; /* Blocksize */
uint32_t ext_loc; /* Extent locator */
uint32_t ext_beg; /* logical number of block 0 in extent */
uint32_t ext_end; /* logical number of last block in extent */
} __packed;
struct LO_fba_data {
struct {
unsigned char zero:4;
unsigned char cmd:4;
} __packed operation;
uint8_t auxiliary;
uint16_t blk_ct;
uint32_t blk_nr;
} __packed;
struct indirect_block {
uint64_t *block;
} __packed;
#endif /* FBA_H */
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