// 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");