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aa5b395b MZ |
1 | // SPDX-License-Identifier: Zlib |
2 | /* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */ | |
3 | ||
4 | #include <linux/zutil.h> | |
5 | #include "dfltcc_util.h" | |
6 | #include "dfltcc.h" | |
7 | ||
8 | char *oesc_msg( | |
9 | char *buf, | |
10 | int oesc | |
11 | ) | |
12 | { | |
13 | if (oesc == 0x00) | |
14 | return NULL; /* Successful completion */ | |
15 | else { | |
16 | #ifdef STATIC | |
17 | return NULL; /* Ignore for pre-boot decompressor */ | |
18 | #else | |
19 | sprintf(buf, "Operation-Ending-Supplemental Code is 0x%.2X", oesc); | |
20 | return buf; | |
21 | #endif | |
22 | } | |
23 | } | |
24 | ||
25 | void dfltcc_reset( | |
26 | z_streamp strm, | |
27 | uInt size | |
28 | ) | |
29 | { | |
30 | struct dfltcc_state *dfltcc_state = | |
31 | (struct dfltcc_state *)((char *)strm->state + size); | |
32 | struct dfltcc_qaf_param *param = | |
33 | (struct dfltcc_qaf_param *)&dfltcc_state->param; | |
34 | ||
35 | /* Initialize available functions */ | |
36 | if (is_dfltcc_enabled()) { | |
37 | dfltcc(DFLTCC_QAF, param, NULL, NULL, NULL, NULL, NULL); | |
38 | memmove(&dfltcc_state->af, param, sizeof(dfltcc_state->af)); | |
39 | } else | |
40 | memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af)); | |
41 | ||
42 | /* Initialize parameter block */ | |
43 | memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param)); | |
44 | dfltcc_state->param.nt = 1; | |
45 | ||
46 | /* Initialize tuning parameters */ | |
c65e6815 MZ |
47 | if (zlib_dfltcc_support == ZLIB_DFLTCC_FULL_DEBUG) |
48 | dfltcc_state->level_mask = DFLTCC_LEVEL_MASK_DEBUG; | |
49 | else | |
50 | dfltcc_state->level_mask = DFLTCC_LEVEL_MASK; | |
aa5b395b MZ |
51 | dfltcc_state->block_size = DFLTCC_BLOCK_SIZE; |
52 | dfltcc_state->block_threshold = DFLTCC_FIRST_FHT_BLOCK_SIZE; | |
53 | dfltcc_state->dht_threshold = DFLTCC_DHT_MIN_SAMPLE_SIZE; | |
54 | dfltcc_state->param.ribm = DFLTCC_RIBM; | |
55 | } |