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Add decompression functions to zlib_dfltcc library. Update zlib_inflate functions with the hooks for s390 hardware support and adjust workspace structures with extra parameter lists required for hardware inflate decompression. Link: http://lkml.kernel.org/r/20200103223334.20669-4-zaslonko@linux.ibm.com Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Co-developed-by: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Chris Mason <clm@fb.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: David Sterba <dsterba@suse.com> Cc: Eduard Shishkin <edward6@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Josef Bacik <josef@toxicpanda.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
39 lines
1 KiB
C
39 lines
1 KiB
C
/* infutil.h -- types and macros common to blocks and codes
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* Copyright (C) 1995-1998 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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/* WARNING: this file should *not* be used by applications. It is
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part of the implementation of the compression library and is
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subject to change. Applications should only use zlib.h.
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*/
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#ifndef _INFUTIL_H
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#define _INFUTIL_H
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#include <linux/zlib.h>
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#ifdef CONFIG_ZLIB_DFLTCC
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#include "../zlib_dfltcc/dfltcc.h"
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#include <asm/page.h>
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#endif
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/* memory allocation for inflation */
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struct inflate_workspace {
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struct inflate_state inflate_state;
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#ifdef CONFIG_ZLIB_DFLTCC
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struct dfltcc_state dfltcc_state;
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unsigned char working_window[(1 << MAX_WBITS) + PAGE_SIZE];
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#else
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unsigned char working_window[(1 << MAX_WBITS)];
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#endif
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};
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#ifdef CONFIG_ZLIB_DFLTCC
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/* dfltcc_state must be doubleword aligned for DFLTCC call */
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static_assert(offsetof(struct inflate_workspace, dfltcc_state) % 8 == 0);
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#endif
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#define WS(strm) ((struct inflate_workspace *)(strm->workspace))
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#endif
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