linux/lib/zlib_inflate/infutil.h
Mikhail Zaslonko 1261961000 lib/zlib: add s390 hardware support for kernel zlib_inflate
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>
2020-01-31 10:30:40 -08:00

40 lines
1.0 KiB
C

/* infutil.h -- types and macros common to blocks and codes
* Copyright (C) 1995-1998 Mark Adler
* For conditions of distribution and use, see copyright notice in zlib.h
*/
/* WARNING: this file should *not* be used by applications. It is
part of the implementation of the compression library and is
subject to change. Applications should only use zlib.h.
*/
#ifndef _INFUTIL_H
#define _INFUTIL_H
#include <linux/zlib.h>
#ifdef CONFIG_ZLIB_DFLTCC
#include "../zlib_dfltcc/dfltcc.h"
#include <asm/page.h>
#endif
/* memory allocation for inflation */
struct inflate_workspace {
struct inflate_state inflate_state;
#ifdef CONFIG_ZLIB_DFLTCC
struct dfltcc_state dfltcc_state;
unsigned char working_window[(1 << MAX_WBITS) + PAGE_SIZE];
#else
unsigned char working_window[(1 << MAX_WBITS)];
#endif
};
#ifdef CONFIG_ZLIB_DFLTCC
/* dfltcc_state must be doubleword aligned for DFLTCC call */
static_assert(offsetof(struct inflate_workspace, dfltcc_state) % 8 == 0);
#endif
#define WS(strm) ((struct inflate_workspace *)(strm->workspace))
#endif