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aa5b395b MZ |
1 | // SPDX-License-Identifier: Zlib |
2 | /* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */ | |
3 | ||
605cc30d RD |
4 | #include <linux/export.h> |
5 | #include <linux/module.h> | |
aa5b395b MZ |
6 | #include "dfltcc_util.h" |
7 | #include "dfltcc.h" | |
8 | ||
9 | char *oesc_msg( | |
10 | char *buf, | |
11 | int oesc | |
12 | ) | |
13 | { | |
14 | if (oesc == 0x00) | |
15 | return NULL; /* Successful completion */ | |
16 | else { | |
17 | #ifdef STATIC | |
18 | return NULL; /* Ignore for pre-boot decompressor */ | |
19 | #else | |
20 | sprintf(buf, "Operation-Ending-Supplemental Code is 0x%.2X", oesc); | |
21 | return buf; | |
22 | #endif | |
23 | } | |
24 | } | |
25 | ||
26 | void dfltcc_reset( | |
27 | z_streamp strm, | |
28 | uInt size | |
29 | ) | |
30 | { | |
31 | struct dfltcc_state *dfltcc_state = | |
32 | (struct dfltcc_state *)((char *)strm->state + size); | |
33 | struct dfltcc_qaf_param *param = | |
34 | (struct dfltcc_qaf_param *)&dfltcc_state->param; | |
35 | ||
36 | /* Initialize available functions */ | |
37 | if (is_dfltcc_enabled()) { | |
38 | dfltcc(DFLTCC_QAF, param, NULL, NULL, NULL, NULL, NULL); | |
39 | memmove(&dfltcc_state->af, param, sizeof(dfltcc_state->af)); | |
40 | } else | |
41 | memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af)); | |
42 | ||
43 | /* Initialize parameter block */ | |
44 | memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param)); | |
45 | dfltcc_state->param.nt = 1; | |
46 | ||
47 | /* Initialize tuning parameters */ | |
c65e6815 MZ |
48 | if (zlib_dfltcc_support == ZLIB_DFLTCC_FULL_DEBUG) |
49 | dfltcc_state->level_mask = DFLTCC_LEVEL_MASK_DEBUG; | |
50 | else | |
51 | dfltcc_state->level_mask = DFLTCC_LEVEL_MASK; | |
aa5b395b MZ |
52 | dfltcc_state->block_size = DFLTCC_BLOCK_SIZE; |
53 | dfltcc_state->block_threshold = DFLTCC_FIRST_FHT_BLOCK_SIZE; | |
54 | dfltcc_state->dht_threshold = DFLTCC_DHT_MIN_SAMPLE_SIZE; | |
55 | dfltcc_state->param.ribm = DFLTCC_RIBM; | |
56 | } | |
605cc30d RD |
57 | EXPORT_SYMBOL(dfltcc_reset); |
58 | ||
59 | MODULE_LICENSE("GPL"); |