1*4882a593Smuzhiyun // SPDX-License-Identifier: Zlib
2*4882a593Smuzhiyun /* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun #include <linux/export.h>
5*4882a593Smuzhiyun #include <linux/module.h>
6*4882a593Smuzhiyun #include "dfltcc_util.h"
7*4882a593Smuzhiyun #include "dfltcc.h"
8*4882a593Smuzhiyun
oesc_msg(char * buf,int oesc)9*4882a593Smuzhiyun char *oesc_msg(
10*4882a593Smuzhiyun char *buf,
11*4882a593Smuzhiyun int oesc
12*4882a593Smuzhiyun )
13*4882a593Smuzhiyun {
14*4882a593Smuzhiyun if (oesc == 0x00)
15*4882a593Smuzhiyun return NULL; /* Successful completion */
16*4882a593Smuzhiyun else {
17*4882a593Smuzhiyun #ifdef STATIC
18*4882a593Smuzhiyun return NULL; /* Ignore for pre-boot decompressor */
19*4882a593Smuzhiyun #else
20*4882a593Smuzhiyun sprintf(buf, "Operation-Ending-Supplemental Code is 0x%.2X", oesc);
21*4882a593Smuzhiyun return buf;
22*4882a593Smuzhiyun #endif
23*4882a593Smuzhiyun }
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun
dfltcc_reset(z_streamp strm,uInt size)26*4882a593Smuzhiyun void dfltcc_reset(
27*4882a593Smuzhiyun z_streamp strm,
28*4882a593Smuzhiyun uInt size
29*4882a593Smuzhiyun )
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun struct dfltcc_state *dfltcc_state =
32*4882a593Smuzhiyun (struct dfltcc_state *)((char *)strm->state + size);
33*4882a593Smuzhiyun struct dfltcc_qaf_param *param =
34*4882a593Smuzhiyun (struct dfltcc_qaf_param *)&dfltcc_state->param;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun /* Initialize available functions */
37*4882a593Smuzhiyun if (is_dfltcc_enabled()) {
38*4882a593Smuzhiyun dfltcc(DFLTCC_QAF, param, NULL, NULL, NULL, NULL, NULL);
39*4882a593Smuzhiyun memmove(&dfltcc_state->af, param, sizeof(dfltcc_state->af));
40*4882a593Smuzhiyun } else
41*4882a593Smuzhiyun memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af));
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun /* Initialize parameter block */
44*4882a593Smuzhiyun memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param));
45*4882a593Smuzhiyun dfltcc_state->param.nt = 1;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun /* Initialize tuning parameters */
48*4882a593Smuzhiyun if (zlib_dfltcc_support == ZLIB_DFLTCC_FULL_DEBUG)
49*4882a593Smuzhiyun dfltcc_state->level_mask = DFLTCC_LEVEL_MASK_DEBUG;
50*4882a593Smuzhiyun else
51*4882a593Smuzhiyun dfltcc_state->level_mask = DFLTCC_LEVEL_MASK;
52*4882a593Smuzhiyun dfltcc_state->block_size = DFLTCC_BLOCK_SIZE;
53*4882a593Smuzhiyun dfltcc_state->block_threshold = DFLTCC_FIRST_FHT_BLOCK_SIZE;
54*4882a593Smuzhiyun dfltcc_state->dht_threshold = DFLTCC_DHT_MIN_SAMPLE_SIZE;
55*4882a593Smuzhiyun dfltcc_state->param.ribm = DFLTCC_RIBM;
56*4882a593Smuzhiyun }
57*4882a593Smuzhiyun EXPORT_SYMBOL(dfltcc_reset);
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun MODULE_LICENSE("GPL");
60