1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Simple program to generate bitmaps, for example facility lists. 4 * 5 * Copyright IBM Corp. 2015, 2018 6 * 7 */ 8 9 #include <getopt.h> 10 #include <strings.h> 11 #include <string.h> 12 #include <stdlib.h> 13 #include <stdio.h> 14 15 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) 16 17 struct bitmap_def { 18 char *name; 19 int *bits; 20 }; 21 22 static struct bitmap_def facility_defs[] = { 23 { 24 /* 25 * FACILITIES_ALS contains the list of facilities that are 26 * required to run a kernel that is compiled e.g. with 27 * -march=<machine>. 28 */ 29 .name = "FACILITIES_ALS", 30 .bits = (int[]){ 31 0, /* N3 instructions */ 32 1, /* z/Arch mode installed */ 33 3, /* dat-enhancement 1 */ 34 18, /* long displacement facility */ 35 21, /* extended-immediate facility */ 36 25, /* store clock fast */ 37 27, /* mvcos */ 38 32, /* compare and swap and store */ 39 33, /* compare and swap and store 2 */ 40 34, /* general instructions extension */ 41 35, /* execute extensions */ 42 #ifdef CONFIG_HAVE_MARCH_Z196_FEATURES 43 45, /* fast-BCR, etc. */ 44 #endif 45 #ifdef CONFIG_HAVE_MARCH_ZEC12_FEATURES 46 49, /* misc-instruction-extensions */ 47 52, /* interlocked facility 2 */ 48 #endif 49 #ifdef CONFIG_HAVE_MARCH_Z13_FEATURES 50 53, /* load-and-zero-rightmost-byte, etc. */ 51 129, /* vector */ 52 #endif 53 #ifdef CONFIG_HAVE_MARCH_Z14_FEATURES 54 58, /* miscellaneous-instruction-extension 2 */ 55 #endif 56 #ifdef CONFIG_HAVE_MARCH_Z15_FEATURES 57 61, /* miscellaneous-instruction-extension 3 */ 58 #endif 59 #ifdef CONFIG_HAVE_MARCH_Z17_FEATURES 60 84, /* miscellaneous-instruction-extension 4 */ 61 #endif 62 -1 /* END */ 63 } 64 }, 65 { 66 /* 67 * FACILITIES_KVM contains the list of facilities that are part 68 * of the default facility mask and list that are passed to the 69 * initial CPU model. If no CPU model is used, this, together 70 * with the non-hypervisor managed bits, is the maximum list of 71 * guest facilities supported by KVM. 72 */ 73 .name = "FACILITIES_KVM", 74 .bits = (int[]){ 75 0, /* N3 instructions */ 76 1, /* z/Arch mode installed */ 77 2, /* z/Arch mode active */ 78 3, /* DAT-enhancement */ 79 4, /* idte segment table */ 80 5, /* idte region table */ 81 6, /* ASN-and-LX reuse */ 82 7, /* stfle */ 83 8, /* enhanced-DAT 1 */ 84 9, /* sense-running-status */ 85 10, /* conditional sske */ 86 13, /* ipte-range */ 87 14, /* nonquiescing key-setting */ 88 73, /* transactional execution */ 89 75, /* access-exception-fetch/store indication */ 90 76, /* msa extension 3 */ 91 77, /* msa extension 4 */ 92 78, /* enhanced-DAT 2 */ 93 130, /* instruction-execution-protection */ 94 131, /* enhanced-SOP 2 and side-effect */ 95 139, /* multiple epoch facility */ 96 146, /* msa extension 8 */ 97 150, /* enhanced sort */ 98 151, /* deflate conversion */ 99 155, /* msa extension 9 */ 100 165, /* nnpa facility */ 101 170, /* ineffective-nonconstrained-transaction facility */ 102 193, /* bear enhancement facility */ 103 194, /* rdp enhancement facility */ 104 196, /* processor activity instrumentation facility */ 105 197, /* processor activity instrumentation extension 1 */ 106 201, /* concurrent-functions facility */ 107 -1 /* END */ 108 } 109 }, 110 { 111 /* 112 * FACILITIES_KVM_CPUMODEL contains the list of facilities 113 * that can be enabled by CPU model code if the host supports 114 * it. These facilities are not passed to the guest without 115 * CPU model support. 116 */ 117 118 .name = "FACILITIES_KVM_CPUMODEL", 119 .bits = (int[]){ 120 12, /* AP Query Configuration Information */ 121 15, /* AP Facilities Test */ 122 156, /* etoken facility */ 123 -1 /* END */ 124 } 125 }, 126 }; 127 128 static void print_bitmap(struct bitmap_def *def) 129 { 130 unsigned int high, bit, dword, i; 131 unsigned long long *array; 132 133 array = calloc(1, 8); 134 if (!array) 135 exit(EXIT_FAILURE); 136 high = 0; 137 for (i = 0; def->bits[i] != -1; i++) { 138 bit = 63 - (def->bits[i] & 63); 139 dword = def->bits[i] / 64; 140 if (dword > high) { 141 array = realloc(array, (dword + 1) * 8); 142 if (!array) 143 exit(EXIT_FAILURE); 144 memset(array + high + 1, 0, (dword - high) * 8); 145 high = dword; 146 } 147 array[dword] |= 1ULL << bit; 148 } 149 printf("#define %s ", def->name); 150 for (i = 0; i <= high; i++) 151 printf("_AC(0x%016llx,UL)%c", array[i], i < high ? ',' : '\n'); 152 free(array); 153 } 154 155 static void print_header(const char *guard, struct bitmap_def *defs, size_t num) 156 { 157 unsigned int i; 158 159 printf("#ifndef __ASM_S390_%s_DEFS__\n", guard); 160 printf("#define __ASM_S390_%s_DEFS__\n", guard); 161 printf("/*\n"); 162 printf(" * DO NOT MODIFY.\n"); 163 printf(" *\n"); 164 printf(" * This file was generated by %s\n", __FILE__); 165 printf(" */\n\n"); 166 printf("#include <linux/const.h>\n\n"); 167 for (i = 0; i < num; i++) 168 print_bitmap(&defs[i]); 169 printf("\n#endif\n"); 170 } 171 172 static const struct option long_options[] = { 173 { "facility", no_argument, NULL, 'f' }, 174 { NULL, 0, NULL, 0 } 175 }; 176 177 int main(int argc, char **argv) 178 { 179 int opt; 180 181 opt = getopt_long(argc, argv, "", long_options, NULL); 182 if (opt == -1) 183 return 1; 184 switch (opt) { 185 case 'f': 186 print_header("FACILITY", facility_defs, ARRAY_SIZE(facility_defs)); 187 break; 188 default: 189 return 1; 190 } 191 return 0; 192 } 193