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 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 -1 /* END */ 62 } 63 }, 64 { 65 /* 66 * FACILITIES_KVM contains the list of facilities that are part 67 * of the default facility mask and list that are passed to the 68 * initial CPU model. If no CPU model is used, this, together 69 * with the non-hypervisor managed bits, is the maximum list of 70 * guest facilities supported by KVM. 71 */ 72 .name = "FACILITIES_KVM", 73 .bits = (int[]){ 74 0, /* N3 instructions */ 75 1, /* z/Arch mode installed */ 76 2, /* z/Arch mode active */ 77 3, /* DAT-enhancement */ 78 4, /* idte segment table */ 79 5, /* idte region table */ 80 6, /* ASN-and-LX reuse */ 81 7, /* stfle */ 82 8, /* enhanced-DAT 1 */ 83 9, /* sense-running-status */ 84 10, /* conditional sske */ 85 13, /* ipte-range */ 86 14, /* nonquiescing key-setting */ 87 73, /* transactional execution */ 88 75, /* access-exception-fetch/store indication */ 89 76, /* msa extension 3 */ 90 77, /* msa extension 4 */ 91 78, /* enhanced-DAT 2 */ 92 130, /* instruction-execution-protection */ 93 131, /* enhanced-SOP 2 and side-effect */ 94 139, /* multiple epoch facility */ 95 146, /* msa extension 8 */ 96 -1 /* END */ 97 } 98 }, 99 { 100 /* 101 * FACILITIES_KVM_CPUMODEL contains the list of facilities 102 * that can be enabled by CPU model code if the host supports 103 * it. These facilities are not passed to the guest without 104 * CPU model support. 105 */ 106 107 .name = "FACILITIES_KVM_CPUMODEL", 108 .bits = (int[]){ 109 -1 /* END */ 110 } 111 }, 112 }; 113 114 static void print_facility_list(struct facility_def *def) 115 { 116 unsigned int high, bit, dword, i; 117 unsigned long long *array; 118 119 array = calloc(1, 8); 120 if (!array) 121 exit(EXIT_FAILURE); 122 high = 0; 123 for (i = 0; def->bits[i] != -1; i++) { 124 bit = 63 - (def->bits[i] & 63); 125 dword = def->bits[i] / 64; 126 if (dword > high) { 127 array = realloc(array, (dword + 1) * 8); 128 if (!array) 129 exit(EXIT_FAILURE); 130 memset(array + high + 1, 0, (dword - high) * 8); 131 high = dword; 132 } 133 array[dword] |= 1ULL << bit; 134 } 135 printf("#define %s ", def->name); 136 for (i = 0; i <= high; i++) 137 printf("_AC(0x%016llx,UL)%c", array[i], i < high ? ',' : '\n'); 138 free(array); 139 } 140 141 static void print_facility_lists(void) 142 { 143 unsigned int i; 144 145 for (i = 0; i < sizeof(facility_defs) / sizeof(facility_defs[0]); i++) 146 print_facility_list(&facility_defs[i]); 147 } 148 149 int main(int argc, char **argv) 150 { 151 printf("#ifndef __ASM_S390_FACILITY_DEFS__\n"); 152 printf("#define __ASM_S390_FACILITY_DEFS__\n"); 153 printf("/*\n"); 154 printf(" * DO NOT MODIFY.\n"); 155 printf(" *\n"); 156 printf(" * This file was generated by %s\n", __FILE__); 157 printf(" */\n\n"); 158 printf("#include <linux/const.h>\n\n"); 159 print_facility_lists(); 160 printf("\n#endif\n"); 161 return 0; 162 } 163