| // SPDX-License-Identifier: Zlib |
| /* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */ |
| |
| #include <linux/export.h> |
| #include <linux/module.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; |
| } |
| EXPORT_SYMBOL(dfltcc_reset); |
| |
| MODULE_LICENSE("GPL"); |