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// SPDX-License-Identifier: Zlib
/* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */
#include <linux/zutil.h>
#include "dfltcc_util.h"
#include "dfltcc.h"
char *oesc_msg(
char *buf,
int oesc
)
{
if (oesc == 0x00)
return NULL; /* Successful completion */
else {
#ifdef STATIC
return NULL; /* Ignore for pre-boot decompressor */
#else
sprintf(buf, "Operation-Ending-Supplemental Code is 0x%.2X", oesc);
return buf;
#endif
}
}
void dfltcc_reset(
z_streamp strm,
uInt size
)
{
struct dfltcc_state *dfltcc_state =
(struct dfltcc_state *)((char *)strm->state + size);
struct dfltcc_qaf_param *param =
(struct dfltcc_qaf_param *)&dfltcc_state->param;
/* Initialize available functions */
if (is_dfltcc_enabled()) {
dfltcc(DFLTCC_QAF, param, NULL, NULL, NULL, NULL, NULL);
memmove(&dfltcc_state->af, param, sizeof(dfltcc_state->af));
} else
memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af));
/* Initialize parameter block */
memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param));
dfltcc_state->param.nt = 1;
/* Initialize tuning parameters */
if (zlib_dfltcc_support == ZLIB_DFLTCC_FULL_DEBUG)
dfltcc_state->level_mask = DFLTCC_LEVEL_MASK_DEBUG;
else
dfltcc_state->level_mask = DFLTCC_LEVEL_MASK;
dfltcc_state->block_size = DFLTCC_BLOCK_SIZE;
dfltcc_state->block_threshold = DFLTCC_FIRST_FHT_BLOCK_SIZE;
dfltcc_state->dht_threshold = DFLTCC_DHT_MIN_SAMPLE_SIZE;
dfltcc_state->param.ribm = DFLTCC_RIBM;
}
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