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https://github.com/ibm-s390-linux/s390-tools.git
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0dac47cb62
Move code from write_dump_segment() to write_addr_range() function to use it later for writing compressed dump segments as well. Verify that passed address range is a multiple of dasd block size. Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/*
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* zipl - zSeries Initial Program Loader tool
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*
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* Common ECKD dump I/O functions
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*
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* Copyright IBM Corp. 2013, 2023
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef ECKD2DUMP_H
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#define ECKD2DUMP_H
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#include "dump/s390_dump.h"
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#include "cio.h"
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#include "stage2dump.h"
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struct eckd_device {
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uint32_t blk_start;
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uint32_t blk_end;
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uint16_t blk_size;
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uint8_t num_heads;
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uint8_t bpt;
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struct subchannel_id sid;
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uint16_t devno;
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};
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extern struct eckd_device device;
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extern unsigned long eckd_blk_max;
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/*
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* Convert memory size to number of blocks
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*/
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static inline unsigned long m2b(unsigned long mem)
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{
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return mem / device.blk_size;
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}
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/*
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* Convert number of blocks to memory size
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*/
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static inline unsigned long b2m(unsigned long blk)
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{
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return blk * device.blk_size;
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}
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void stage2dump_eckd_init();
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void writeblock(unsigned long blk, unsigned long addr, unsigned long blk_count,
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unsigned long zero_page);
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void readblock(unsigned long blk, unsigned long addr, unsigned long blk_count);
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unsigned long write_dump_segment(unsigned long blk,
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struct df_s390_dump_segm_hdr *segm);
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unsigned long write_addr_range(unsigned long blk, unsigned long addr, unsigned long len);
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#endif /* ECKD2DUMP_H */
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