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 0, /* N3 instructions */
31 1, /* z/Arch mode installed */
32 18, /* long displacement facility */
33 21, /* extended-immediate facility */
34 25, /* store clock fast */
35 27, /* mvcos */
36 32, /* compare and swap and store */
37 33, /* compare and swap and store 2 */
38 34, /* general instructions extension */
39 35, /* execute extensions */
40 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
41 45, /* fast-BCR, etc. */
42 #endif
43 #ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES
44 49, /* misc-instruction-extensions */
45 52, /* interlocked facility 2 */
46 #endif
47 #ifdef CONFIG_HAVE_MARCH_Z13_FEATURES
48 53, /* load-and-zero-rightmost-byte, etc. */
49 129, /* vector */
50 #endif
51 #ifdef CONFIG_HAVE_MARCH_Z14_FEATURES
52 58, /* miscellaneous-instruction-extension 2 */
53 #endif
54 #ifdef CONFIG_HAVE_MARCH_Z15_FEATURES
55 61, /* miscellaneous-instruction-extension 3 */
56 #endif
57 #ifdef CONFIG_HAVE_MARCH_Z17_FEATURES
58 84, /* miscellaneous-instruction-extension 4 */
59 #endif
60 -1 /* END */
61 }
62 },
63 {
64 /*
65 * FACILITIES_KVM contains the list of facilities that are part
66 * of the default facility mask and list that are passed to the
67 * initial CPU model. If no CPU model is used, this, together
68 * with the non-hypervisor managed bits, is the maximum list of
69 * guest facilities supported by KVM.
70 */
71 .name = "FACILITIES_KVM",
72 .bits = (int[]){
73 0, /* N3 instructions */
74 1, /* z/Arch mode installed */
75 2, /* z/Arch mode active */
76 3, /* DAT-enhancement */
77 4, /* idte segment table */
78 5, /* idte region table */
79 6, /* ASN-and-LX reuse */
80 7, /* stfle */
81 8, /* enhanced-DAT 1 */
82 9, /* sense-running-status */
83 10, /* conditional sske */
84 13, /* ipte-range */
85 14, /* nonquiescing key-setting */
86 73, /* transactional execution */
87 75, /* access-exception-fetch/store indication */
88 76, /* msa extension 3 */
89 77, /* msa extension 4 */
90 78, /* enhanced-DAT 2 */
91 130, /* instruction-execution-protection */
92 131, /* enhanced-SOP 2 and side-effect */
93 139, /* multiple epoch facility */
94 146, /* msa extension 8 */
95 150, /* enhanced sort */
96 151, /* deflate conversion */
97 155, /* msa extension 9 */
98 -1 /* END */
99 }
100 },
101 {
102 /*
103 * FACILITIES_KVM_CPUMODEL contains the list of facilities
104 * that can be enabled by CPU model code if the host supports
105 * it. These facilities are not passed to the guest without
106 * CPU model support.
107 */
108
109 .name = "FACILITIES_KVM_CPUMODEL",
110 .bits = (int[]){
111 12, /* AP Query Configuration Information */
112 15, /* AP Facilities Test */
113 156, /* etoken facility */
114 165, /* nnpa facility */
115 170, /* ineffective-nonconstrained-transaction facility */
116 193, /* bear enhancement facility */
117 194, /* rdp enhancement facility */
118 196, /* processor activity instrumentation facility */
119 197, /* processor activity instrumentation extension 1 */
120 201, /* concurrent-functions facility */
121 -1 /* END */
122 }
123 },
124 };
125
print_facility_list(struct facility_def * def)126 static void print_facility_list(struct facility_def *def)
127 {
128 unsigned int high, bit, dword, i;
129 unsigned long long *array;
130
131 array = calloc(1, 8);
132 if (!array)
133 exit(EXIT_FAILURE);
134 high = 0;
135 for (i = 0; def->bits[i] != -1; i++) {
136 bit = 63 - (def->bits[i] & 63);
137 dword = def->bits[i] / 64;
138 if (dword > high) {
139 array = realloc(array, (dword + 1) * 8);
140 if (!array)
141 exit(EXIT_FAILURE);
142 memset(array + high + 1, 0, (dword - high) * 8);
143 high = dword;
144 }
145 array[dword] |= 1ULL << bit;
146 }
147 printf("#define %s ", def->name);
148 for (i = 0; i <= high; i++)
149 printf("_AC(0x%016llx,UL)%c", array[i], i < high ? ',' : '\n');
150 free(array);
151 }
152
print_facility_lists(void)153 static void print_facility_lists(void)
154 {
155 unsigned int i;
156
157 for (i = 0; i < sizeof(facility_defs) / sizeof(facility_defs[0]); i++)
158 print_facility_list(&facility_defs[i]);
159 }
160
main(int argc,char ** argv)161 int main(int argc, char **argv)
162 {
163 printf("#ifndef __ASM_S390_FACILITY_DEFS__\n");
164 printf("#define __ASM_S390_FACILITY_DEFS__\n");
165 printf("/*\n");
166 printf(" * DO NOT MODIFY.\n");
167 printf(" *\n");
168 printf(" * This file was generated by %s\n", __FILE__);
169 printf(" */\n\n");
170 printf("#include <linux/const.h>\n\n");
171 print_facility_lists();
172 printf("\n#endif\n");
173 return 0;
174 }
175