1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * CPU-measurement facilities 4 * 5 * Copyright IBM Corp. 2012, 2018 6 * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> 7 * Jan Glauber <jang@linux.vnet.ibm.com> 8 */ 9 #ifndef _ASM_S390_CPU_MF_H 10 #define _ASM_S390_CPU_MF_H 11 12 #include <linux/errno.h> 13 #include <asm/asm-extable.h> 14 #include <asm/facility.h> 15 16 asm(".include \"asm/cpu_mf-insn.h\"\n"); 17 18 #define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ 19 #define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */ 20 #define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */ 21 #define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */ 22 #define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ 23 #define CPU_MF_INT_CF_MTDA (1 << 15) /* loss of MT ctr. data alert */ 24 #define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ 25 #define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ 26 #define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_MTDA|CPU_MF_INT_CF_CACA| \ 27 CPU_MF_INT_CF_LCDA) 28 #define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ 29 CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ 30 CPU_MF_INT_SF_LSDA) 31 32 #define CPU_MF_SF_RIBM_NOTAV 0x1 /* Sampling unavailable */ 33 34 /* CPU measurement facility support */ 35 static inline int cpum_cf_avail(void) 36 { 37 return test_facility(40) && test_facility(67); 38 } 39 40 static inline int cpum_sf_avail(void) 41 { 42 return test_facility(40) && test_facility(68); 43 } 44 45 struct cpumf_ctr_info { 46 u16 cfvn; 47 u16 auth_ctl; 48 u16 enable_ctl; 49 u16 act_ctl; 50 u16 max_cpu; 51 u16 csvn; 52 u16 max_cg; 53 u16 reserved1; 54 u32 reserved2[12]; 55 } __packed; 56 57 /* QUERY SAMPLING INFORMATION block */ 58 struct hws_qsi_info_block { /* Bit(s) */ 59 unsigned int b0_13:14; /* 0-13: zeros */ 60 unsigned int as:1; /* 14: basic-sampling authorization */ 61 unsigned int ad:1; /* 15: diag-sampling authorization */ 62 unsigned int b16_21:6; /* 16-21: zeros */ 63 unsigned int es:1; /* 22: basic-sampling enable control */ 64 unsigned int ed:1; /* 23: diag-sampling enable control */ 65 unsigned int b24_29:6; /* 24-29: zeros */ 66 unsigned int cs:1; /* 30: basic-sampling activation control */ 67 unsigned int cd:1; /* 31: diag-sampling activation control */ 68 unsigned int bsdes:16; /* 4-5: size of basic sampling entry */ 69 unsigned int dsdes:16; /* 6-7: size of diagnostic sampling entry */ 70 unsigned long min_sampl_rate; /* 8-15: minimum sampling interval */ 71 unsigned long max_sampl_rate; /* 16-23: maximum sampling interval*/ 72 unsigned long tear; /* 24-31: TEAR contents */ 73 unsigned long dear; /* 32-39: DEAR contents */ 74 unsigned int rsvrd0:24; /* 40-42: reserved */ 75 unsigned int ribm:8; /* 43: Reserved by IBM */ 76 unsigned int cpu_speed; /* 44-47: CPU speed */ 77 unsigned long long rsvrd1; /* 48-55: reserved */ 78 unsigned long long rsvrd2; /* 56-63: reserved */ 79 } __packed; 80 81 /* SET SAMPLING CONTROLS request block */ 82 struct hws_lsctl_request_block { 83 unsigned int s:1; /* 0: maximum buffer indicator */ 84 unsigned int h:1; /* 1: part. level reserved for VM use*/ 85 unsigned long long b2_53:52;/* 2-53: zeros */ 86 unsigned int es:1; /* 54: basic-sampling enable control */ 87 unsigned int ed:1; /* 55: diag-sampling enable control */ 88 unsigned int b56_61:6; /* 56-61: - zeros */ 89 unsigned int cs:1; /* 62: basic-sampling activation control */ 90 unsigned int cd:1; /* 63: diag-sampling activation control */ 91 unsigned long interval; /* 8-15: sampling interval */ 92 unsigned long tear; /* 16-23: TEAR contents */ 93 unsigned long dear; /* 24-31: DEAR contents */ 94 /* 32-63: */ 95 unsigned long rsvrd1; /* reserved */ 96 unsigned long rsvrd2; /* reserved */ 97 unsigned long rsvrd3; /* reserved */ 98 unsigned long rsvrd4; /* reserved */ 99 } __packed; 100 101 struct hws_basic_entry { 102 unsigned int def:16; /* 0-15 Data Entry Format */ 103 unsigned int R:4; /* 16-19 reserved */ 104 unsigned int U:4; /* 20-23 Number of unique instruct. */ 105 unsigned int z:2; /* zeros */ 106 unsigned int T:1; /* 26 PSW DAT mode */ 107 unsigned int W:1; /* 27 PSW wait state */ 108 unsigned int P:1; /* 28 PSW Problem state */ 109 unsigned int AS:2; /* 29-30 PSW address-space control */ 110 unsigned int I:1; /* 31 entry valid or invalid */ 111 unsigned int CL:2; /* 32-33 Configuration Level */ 112 unsigned int H:1; /* 34 Host Indicator */ 113 unsigned int LS:1; /* 35 Limited Sampling */ 114 unsigned int:12; 115 unsigned int prim_asn:16; /* primary ASN */ 116 unsigned long long ia; /* Instruction Address */ 117 unsigned long long gpp; /* Guest Program Parameter */ 118 unsigned long long hpp; /* Host Program Parameter */ 119 } __packed; 120 121 struct hws_diag_entry { 122 unsigned int def:16; /* 0-15 Data Entry Format */ 123 unsigned int R:15; /* 16-19 and 20-30 reserved */ 124 unsigned int I:1; /* 31 entry valid or invalid */ 125 u8 data[]; /* Machine-dependent sample data */ 126 } __packed; 127 128 struct hws_combined_entry { 129 struct hws_basic_entry basic; /* Basic-sampling data entry */ 130 struct hws_diag_entry diag; /* Diagnostic-sampling data entry */ 131 } __packed; 132 133 union hws_trailer_header { 134 struct { 135 unsigned int f:1; /* 0 - Block Full Indicator */ 136 unsigned int a:1; /* 1 - Alert request control */ 137 unsigned int t:1; /* 2 - Timestamp format */ 138 unsigned int :29; /* 3 - 31: Reserved */ 139 unsigned int bsdes:16; /* 32-47: size of basic SDE */ 140 unsigned int dsdes:16; /* 48-63: size of diagnostic SDE */ 141 unsigned long long overflow; /* 64 - Overflow Count */ 142 }; 143 u128 val; 144 }; 145 146 struct hws_trailer_entry { 147 union hws_trailer_header header; /* 0 - 15 Flags + Overflow Count */ 148 unsigned char timestamp[16]; /* 16 - 31 timestamp */ 149 unsigned long long reserved1; /* 32 -Reserved */ 150 unsigned long long reserved2; /* */ 151 union { /* 48 - reserved for programming use */ 152 struct { 153 unsigned int clock_base:1; /* in progusage2 */ 154 unsigned long long progusage1:63; 155 unsigned long long progusage2; 156 }; 157 unsigned long long progusage[2]; 158 }; 159 } __packed; 160 161 /* Load program parameter */ 162 static inline void lpp(void *pp) 163 { 164 asm volatile("lpp 0(%0)\n" :: "a" (pp) : "memory"); 165 } 166 167 /* Query counter information */ 168 static inline int qctri(struct cpumf_ctr_info *info) 169 { 170 int rc = -EINVAL; 171 172 asm volatile ( 173 "0: qctri %1\n" 174 "1: lhi %0,0\n" 175 "2:\n" 176 EX_TABLE(1b, 2b) 177 : "+d" (rc), "=Q" (*info)); 178 return rc; 179 } 180 181 /* Load CPU-counter-set controls */ 182 static inline int lcctl(u64 ctl) 183 { 184 int cc; 185 186 asm volatile ( 187 " lcctl %1\n" 188 " ipm %0\n" 189 " srl %0,28\n" 190 : "=d" (cc) : "Q" (ctl) : "cc"); 191 return cc; 192 } 193 194 /* Extract CPU counter */ 195 static inline int __ecctr(u64 ctr, u64 *content) 196 { 197 u64 _content; 198 int cc; 199 200 asm volatile ( 201 " ecctr %0,%2\n" 202 " ipm %1\n" 203 " srl %1,28\n" 204 : "=d" (_content), "=d" (cc) : "d" (ctr) : "cc"); 205 *content = _content; 206 return cc; 207 } 208 209 /* Extract CPU counter */ 210 static inline int ecctr(u64 ctr, u64 *val) 211 { 212 u64 content; 213 int cc; 214 215 cc = __ecctr(ctr, &content); 216 if (!cc) 217 *val = content; 218 return cc; 219 } 220 221 /* Store CPU counter multiple for a particular counter set */ 222 enum stcctm_ctr_set { 223 EXTENDED = 0, 224 BASIC = 1, 225 PROBLEM_STATE = 2, 226 CRYPTO_ACTIVITY = 3, 227 MT_DIAG = 5, 228 MT_DIAG_CLEARING = 9, /* clears loss-of-MT-ctr-data alert */ 229 }; 230 231 static __always_inline int stcctm(enum stcctm_ctr_set set, u64 range, u64 *dest) 232 { 233 int cc; 234 235 asm volatile ( 236 " STCCTM %2,%3,%1\n" 237 " ipm %0\n" 238 " srl %0,28\n" 239 : "=d" (cc) 240 : "Q" (*dest), "d" (range), "i" (set) 241 : "cc", "memory"); 242 return cc; 243 } 244 245 /* Query sampling information */ 246 static inline int qsi(struct hws_qsi_info_block *info) 247 { 248 int cc = 1; 249 250 asm volatile( 251 "0: qsi %1\n" 252 "1: lhi %0,0\n" 253 "2:\n" 254 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) 255 : "+d" (cc), "+Q" (*info)); 256 return cc ? -EINVAL : 0; 257 } 258 259 /* Load sampling controls */ 260 static inline int lsctl(struct hws_lsctl_request_block *req) 261 { 262 int cc; 263 264 cc = 1; 265 asm volatile( 266 "0: lsctl 0(%1)\n" 267 "1: ipm %0\n" 268 " srl %0,28\n" 269 "2:\n" 270 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) 271 : "+d" (cc), "+a" (req) 272 : "m" (*req) 273 : "cc", "memory"); 274 275 return cc ? -EINVAL : 0; 276 } 277 #endif /* _ASM_S390_CPU_MF_H */ 278