1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Simple program to generate defines out of facility lists that use the bit
4 * numbering scheme from the Princples of Operations: most significant bit
5 * has bit number 0.
6 *
7 * Copyright IBM Corp. 2015, 2018
8 *
9 */
10
11 #include <strings.h>
12 #include <string.h>
13 #include <stdlib.h>
14 #include <stdio.h>
15
16 struct facility_def {
17 char *name;
18 int *bits;
19 };
20
21 static struct facility_def facility_defs[] = {
22 {
23 /*
24 * FACILITIES_ALS contains the list of facilities that are
25 * required to run a kernel that is compiled e.g. with
26 * -march=<machine>.
27 */
28 .name = "FACILITIES_ALS",
29 .bits = (int[]){
30 #ifdef CONFIG_HAVE_MARCH_Z900_FEATURES
31 0, /* N3 instructions */
32 1, /* z/Arch mode installed */
33 #endif
34 #ifdef CONFIG_HAVE_MARCH_Z990_FEATURES
35 18, /* long displacement facility */
36 #endif
37 #ifdef CONFIG_HAVE_MARCH_Z9_109_FEATURES
38 21, /* extended-immediate facility */
39 25, /* store clock fast */
40 #endif
41 #ifdef CONFIG_HAVE_MARCH_Z10_FEATURES
42 27, /* mvcos */
43 32, /* compare and swap and store */
44 33, /* compare and swap and store 2 */
45 34, /* general instructions extension */
46 35, /* execute extensions */
47 #endif
48 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
49 45, /* fast-BCR, etc. */
50 #endif
51 #ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
52 49, /* misc-instruction-extensions */
53 52, /* interlocked facility 2 */
54 #endif
55 #ifdef CONFIG_HAVE_MARCH_Z13_FEATURES
56 53, /* load-and-zero-rightmost-byte, etc. */
57 #endif
58 #ifdef CONFIG_HAVE_MARCH_Z14_FEATURES
59 58, /* miscellaneous-instruction-extension 2 */
60 #endif
61 #ifdef CONFIG_HAVE_MARCH_Z15_FEATURES
62 61, /* miscellaneous-instruction-extension 3 */
63 #endif
64 -1 /* END */
65 }
66 },
67 {
68 /*
69 * FACILITIES_KVM contains the list of facilities that are part
70 * of the default facility mask and list that are passed to the
71 * initial CPU model. If no CPU model is used, this, together
72 * with the non-hypervisor managed bits, is the maximum list of
73 * guest facilities supported by KVM.
74 */
75 .name = "FACILITIES_KVM",
76 .bits = (int[]){
77 0, /* N3 instructions */
78 1, /* z/Arch mode installed */
79 2, /* z/Arch mode active */
80 3, /* DAT-enhancement */
81 4, /* idte segment table */
82 5, /* idte region table */
83 6, /* ASN-and-LX reuse */
84 7, /* stfle */
85 8, /* enhanced-DAT 1 */
86 9, /* sense-running-status */
87 10, /* conditional sske */
88 13, /* ipte-range */
89 14, /* nonquiescing key-setting */
90 73, /* transactional execution */
91 75, /* access-exception-fetch/store indication */
92 76, /* msa extension 3 */
93 77, /* msa extension 4 */
94 78, /* enhanced-DAT 2 */
95 130, /* instruction-execution-protection */
96 131, /* enhanced-SOP 2 and side-effect */
97 139, /* multiple epoch facility */
98 146, /* msa extension 8 */
99 150, /* enhanced sort */
100 151, /* deflate conversion */
101 155, /* msa extension 9 */
102 -1 /* END */
103 }
104 },
105 {
106 /*
107 * FACILITIES_KVM_CPUMODEL contains the list of facilities
108 * that can be enabled by CPU model code if the host supports
109 * it. These facilities are not passed to the guest without
110 * CPU model support.
111 */
112
113 .name = "FACILITIES_KVM_CPUMODEL",
114 .bits = (int[]){
115 12, /* AP Query Configuration Information */
116 15, /* AP Facilities Test */
117 156, /* etoken facility */
118 -1 /* END */
119 }
120 },
121 };
122
123 static void print_facility_list(struct facility_def *def)
124 {
125 unsigned int high, bit, dword, i;
126 unsigned long long *array;
127
128 array = calloc(1, 8);
129 if (!array)
130 exit(EXIT_FAILURE);
131 high = 0;
132 for (i = 0; def->bits[i] != -1; i++) {
133 bit = 63 - (def->bits[i] & 63);
134 dword = def->bits[i] / 64;
135 if (dword > high) {
136 array = realloc(array, (dword + 1) * 8);
137 if (!array)
138 exit(EXIT_FAILURE);
139 memset(array + high + 1, 0, (dword - high) * 8);
140 high = dword;
141 }
142 array[dword] |= 1ULL << bit;
143 }
144 printf("#define %s ", def->name);
145 for (i = 0; i <= high; i++)
146 printf("_AC(0x%016llx,UL)%c", array[i], i < high ? ',' : '\n');
147 free(array);
148 }
149
150 static void print_facility_lists(void)
151 {
152 unsigned int i;
153
154 for (i = 0; i < sizeof(facility_defs) / sizeof(facility_defs[0]); i++)
155 print_facility_list(&facility_defs[i]);
156 }
157
158 int main(int argc, char **argv)
159 {
160 printf("#ifndef __ASM_S390_FACILITY_DEFS__\n");
161 printf("#define __ASM_S390_FACILITY_DEFS__\n");
162 printf("/*\n");
163 printf(" * DO NOT MODIFY.\n");
164 printf(" *\n");
165 printf(" * This file was generated by %s\n", __FILE__);
166 printf(" */\n\n");
167 printf("#include <linux/const.h>\n\n");
168 print_facility_lists();
169 printf("\n#endif\n");
170 return 0;
171 }