9fec9f8ea5
Currently deflate and inflate both use a common state struct. There are several variables in this struct that we don't need for inflate, and more may be coming in the future. Therefore split them in two separate structs. Apart from that, introduce separate headers for dfltcc_deflate and dfltcc_inflate. This commit is based on: https://github.com/zlib-ng/zlib-ng/commit/c592b1b Link: https://lkml.kernel.org/r/20230126131428.1222214-7-zaslonko@linux.ibm.com Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
// SPDX-License-Identifier: Zlib
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/* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */
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#include <linux/export.h>
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#include <linux/module.h>
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#include "dfltcc_util.h"
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#include "dfltcc.h"
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char *oesc_msg(
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char *buf,
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int oesc
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)
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{
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if (oesc == 0x00)
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return NULL; /* Successful completion */
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else {
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#ifdef STATIC
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return NULL; /* Ignore for pre-boot decompressor */
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#else
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sprintf(buf, "Operation-Ending-Supplemental Code is 0x%.2X", oesc);
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return buf;
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#endif
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}
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}
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void dfltcc_reset_state(struct dfltcc_state *dfltcc_state) {
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/* Initialize available functions */
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if (is_dfltcc_enabled()) {
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dfltcc(DFLTCC_QAF, &dfltcc_state->param, NULL, NULL, NULL, NULL, NULL);
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memmove(&dfltcc_state->af, &dfltcc_state->param, sizeof(dfltcc_state->af));
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} else
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memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af));
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/* Initialize parameter block */
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memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param));
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dfltcc_state->param.nt = 1;
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dfltcc_state->param.ribm = DFLTCC_RIBM;
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}
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MODULE_LICENSE("GPL");
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