| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * CPU-measurement facilities |
| * |
| * Copyright IBM Corp. 2012, 2018 |
| * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> |
| * Jan Glauber <jang@linux.vnet.ibm.com> |
| */ |
| #ifndef _ASM_S390_CPU_MF_H |
| #define _ASM_S390_CPU_MF_H |
| |
| #include <linux/errno.h> |
| #include <linux/kmsan-checks.h> |
| #include <asm/asm-extable.h> |
| #include <asm/facility.h> |
| #include <asm/asm.h> |
| |
| asm(".include \"asm/cpu_mf-insn.h\"\n"); |
| |
| #define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ |
| #define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */ |
| #define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */ |
| #define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */ |
| #define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ |
| #define CPU_MF_INT_CF_MTDA (1 << 15) /* loss of MT ctr. data alert */ |
| #define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ |
| #define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ |
| #define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_MTDA|CPU_MF_INT_CF_CACA| \ |
| CPU_MF_INT_CF_LCDA) |
| #define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ |
| CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ |
| CPU_MF_INT_SF_LSDA) |
| |
| #define CPU_MF_SF_RIBM_NOTAV 0x1 /* Sampling unavailable */ |
| |
| /* CPU measurement facility support */ |
| static inline int cpum_cf_avail(void) |
| { |
| return test_facility(40) && test_facility(67); |
| } |
| |
| static inline int cpum_sf_avail(void) |
| { |
| return test_facility(40) && test_facility(68); |
| } |
| |
| struct cpumf_ctr_info { |
| u16 cfvn; |
| u16 auth_ctl; |
| u16 enable_ctl; |
| u16 act_ctl; |
| u16 max_cpu; |
| u16 csvn; |
| u16 max_cg; |
| u16 reserved1; |
| u32 reserved2[12]; |
| } __packed; |
| |
| /* QUERY SAMPLING INFORMATION block */ |
| struct hws_qsi_info_block { /* Bit(s) */ |
| unsigned int b0_13:14; /* 0-13: zeros */ |
| unsigned int as:1; /* 14: basic-sampling authorization */ |
| unsigned int ad:1; /* 15: diag-sampling authorization */ |
| unsigned int b16_21:6; /* 16-21: zeros */ |
| unsigned int es:1; /* 22: basic-sampling enable control */ |
| unsigned int ed:1; /* 23: diag-sampling enable control */ |
| unsigned int b24_29:6; /* 24-29: zeros */ |
| unsigned int cs:1; /* 30: basic-sampling activation control */ |
| unsigned int cd:1; /* 31: diag-sampling activation control */ |
| unsigned int bsdes:16; /* 4-5: size of basic sampling entry */ |
| unsigned int dsdes:16; /* 6-7: size of diagnostic sampling entry */ |
| unsigned long min_sampl_rate; /* 8-15: minimum sampling interval */ |
| unsigned long max_sampl_rate; /* 16-23: maximum sampling interval*/ |
| unsigned long tear; /* 24-31: TEAR contents */ |
| unsigned long dear; /* 32-39: DEAR contents */ |
| unsigned int rsvrd0:24; /* 40-42: reserved */ |
| unsigned int ribm:8; /* 43: Reserved by IBM */ |
| unsigned int cpu_speed; /* 44-47: CPU speed */ |
| unsigned long long rsvrd1; /* 48-55: reserved */ |
| unsigned long long rsvrd2; /* 56-63: reserved */ |
| } __packed; |
| |
| /* SET SAMPLING CONTROLS request block */ |
| struct hws_lsctl_request_block { |
| unsigned int s:1; /* 0: maximum buffer indicator */ |
| unsigned int h:1; /* 1: part. level reserved for VM use*/ |
| unsigned long long b2_53:52;/* 2-53: zeros */ |
| unsigned int es:1; /* 54: basic-sampling enable control */ |
| unsigned int ed:1; /* 55: diag-sampling enable control */ |
| unsigned int b56_61:6; /* 56-61: - zeros */ |
| unsigned int cs:1; /* 62: basic-sampling activation control */ |
| unsigned int cd:1; /* 63: diag-sampling activation control */ |
| unsigned long interval; /* 8-15: sampling interval */ |
| unsigned long tear; /* 16-23: TEAR contents */ |
| unsigned long dear; /* 24-31: DEAR contents */ |
| /* 32-63: */ |
| unsigned long rsvrd1; /* reserved */ |
| unsigned long rsvrd2; /* reserved */ |
| unsigned long rsvrd3; /* reserved */ |
| unsigned long rsvrd4; /* reserved */ |
| } __packed; |
| |
| struct hws_basic_entry { |
| unsigned int def:16; /* 0-15 Data Entry Format */ |
| unsigned int R:4; /* 16-19 reserved */ |
| unsigned int U:4; /* 20-23 Number of unique instruct. */ |
| unsigned int z:2; /* zeros */ |
| unsigned int T:1; /* 26 PSW DAT mode */ |
| unsigned int W:1; /* 27 PSW wait state */ |
| unsigned int P:1; /* 28 PSW Problem state */ |
| unsigned int AS:2; /* 29-30 PSW address-space control */ |
| unsigned int I:1; /* 31 entry valid or invalid */ |
| unsigned int CL:2; /* 32-33 Configuration Level */ |
| unsigned int H:1; /* 34 Host Indicator */ |
| unsigned int LS:1; /* 35 Limited Sampling */ |
| unsigned int:12; |
| unsigned int prim_asn:16; /* primary ASN */ |
| unsigned long long ia; /* Instruction Address */ |
| unsigned long long gpp; /* Guest Program Parameter */ |
| unsigned long long hpp; /* Host Program Parameter */ |
| } __packed; |
| |
| struct hws_diag_entry { |
| unsigned int def:16; /* 0-15 Data Entry Format */ |
| unsigned int R:15; /* 16-19 and 20-30 reserved */ |
| unsigned int I:1; /* 31 entry valid or invalid */ |
| u8 data[]; /* Machine-dependent sample data */ |
| } __packed; |
| |
| struct hws_combined_entry { |
| struct hws_basic_entry basic; /* Basic-sampling data entry */ |
| struct hws_diag_entry diag; /* Diagnostic-sampling data entry */ |
| } __packed; |
| |
| union hws_trailer_header { |
| struct { |
| unsigned int f:1; /* 0 - Block Full Indicator */ |
| unsigned int a:1; /* 1 - Alert request control */ |
| unsigned int t:1; /* 2 - Timestamp format */ |
| unsigned int :29; /* 3 - 31: Reserved */ |
| unsigned int bsdes:16; /* 32-47: size of basic SDE */ |
| unsigned int dsdes:16; /* 48-63: size of diagnostic SDE */ |
| unsigned long long overflow; /* 64 - Overflow Count */ |
| }; |
| u128 val; |
| }; |
| |
| struct hws_trailer_entry { |
| union hws_trailer_header header; /* 0 - 15 Flags + Overflow Count */ |
| unsigned char timestamp[16]; /* 16 - 31 timestamp */ |
| unsigned long long reserved1; /* 32 -Reserved */ |
| unsigned long long reserved2; /* */ |
| union { /* 48 - reserved for programming use */ |
| struct { |
| unsigned int clock_base:1; /* in progusage2 */ |
| unsigned long long progusage1:63; |
| unsigned long long progusage2; |
| }; |
| unsigned long long progusage[2]; |
| }; |
| } __packed; |
| |
| /* Load program parameter */ |
| static inline void lpp(void *pp) |
| { |
| asm volatile("lpp 0(%0)\n" :: "a" (pp) : "memory"); |
| } |
| |
| /* Query counter information */ |
| static inline int qctri(struct cpumf_ctr_info *info) |
| { |
| int rc = -EINVAL; |
| |
| asm volatile ( |
| "0: qctri %1\n" |
| "1: lhi %0,0\n" |
| "2:\n" |
| EX_TABLE(1b, 2b) |
| : "+d" (rc), "=Q" (*info)); |
| return rc; |
| } |
| |
| /* Load CPU-counter-set controls */ |
| static inline int lcctl(u64 ctl) |
| { |
| int cc; |
| |
| asm volatile ( |
| " lcctl %[ctl]\n" |
| CC_IPM(cc) |
| : CC_OUT(cc, cc) |
| : [ctl] "Q" (ctl) |
| : CC_CLOBBER); |
| return CC_TRANSFORM(cc); |
| } |
| |
| /* Extract CPU counter */ |
| static inline int __ecctr(u64 ctr, u64 *content) |
| { |
| u64 _content; |
| int cc; |
| |
| asm volatile ( |
| " ecctr %[_content],%[ctr]\n" |
| CC_IPM(cc) |
| : CC_OUT(cc, cc), [_content] "=d" (_content) |
| : [ctr] "d" (ctr) |
| : CC_CLOBBER); |
| *content = _content; |
| return CC_TRANSFORM(cc); |
| } |
| |
| /* Extract CPU counter */ |
| static inline int ecctr(u64 ctr, u64 *val) |
| { |
| u64 content; |
| int cc; |
| |
| cc = __ecctr(ctr, &content); |
| if (!cc) |
| *val = content; |
| return cc; |
| } |
| |
| /* Store CPU counter multiple for a particular counter set */ |
| enum stcctm_ctr_set { |
| EXTENDED = 0, |
| BASIC = 1, |
| PROBLEM_STATE = 2, |
| CRYPTO_ACTIVITY = 3, |
| MT_DIAG = 5, |
| MT_DIAG_CLEARING = 9, /* clears loss-of-MT-ctr-data alert */ |
| }; |
| |
| static __always_inline int stcctm(enum stcctm_ctr_set set, u64 range, u64 *dest) |
| { |
| int cc; |
| |
| asm volatile ( |
| " STCCTM %[range],%[set],%[dest]\n" |
| CC_IPM(cc) |
| : CC_OUT(cc, cc) |
| : [dest] "Q" (*dest), [range] "d" (range), [set] "i" (set) |
| : CC_CLOBBER_LIST("memory")); |
| /* |
| * If cc == 2, less than RANGE counters are stored, but it's not easy |
| * to tell how many. Always unpoison the whole range for simplicity. |
| */ |
| kmsan_unpoison_memory(dest, range * sizeof(u64)); |
| return CC_TRANSFORM(cc); |
| } |
| |
| /* Query sampling information */ |
| static inline int qsi(struct hws_qsi_info_block *info) |
| { |
| int cc = 1; |
| |
| asm volatile( |
| "0: qsi %1\n" |
| "1: lhi %0,0\n" |
| "2:\n" |
| EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) |
| : "+d" (cc), "+Q" (*info)); |
| return cc ? -EINVAL : 0; |
| } |
| |
| /* Load sampling controls */ |
| static inline int lsctl(struct hws_lsctl_request_block *req) |
| { |
| int cc, exception; |
| |
| exception = 1; |
| asm volatile( |
| "0: lsctl %[req]\n" |
| "1: lhi %[exc],0\n" |
| "2:\n" |
| CC_IPM(cc) |
| EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) |
| : CC_OUT(cc, cc), [exc] "+d" (exception) |
| : [req] "Q" (*req) |
| : CC_CLOBBER); |
| if (exception || CC_TRANSFORM(cc)) |
| return -EINVAL; |
| return 0; |
| } |
| #endif /* _ASM_S390_CPU_MF_H */ |
