1 // SPDX-License-Identifier: Zlib
2 /* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */
3
4 #include <linux/export.h>
5 #include <linux/module.h>
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_state(struct dfltcc_state *dfltcc_state) {
27 /* Initialize available functions */
28 if (is_dfltcc_enabled()) {
29 dfltcc(DFLTCC_QAF, &dfltcc_state->param, NULL, NULL, NULL, NULL, NULL);
30 memmove(&dfltcc_state->af, &dfltcc_state->param, sizeof(dfltcc_state->af));
31 } else
32 memset(&dfltcc_state->af, 0, sizeof(dfltcc_state->af));
33
34 /* Initialize parameter block */
35 memset(&dfltcc_state->param, 0, sizeof(dfltcc_state->param));
36 dfltcc_state->param.nt = 1;
37 dfltcc_state->param.ribm = DFLTCC_RIBM;
38 }
39
40 MODULE_LICENSE("GPL");
41
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