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328 lines
9.3 KiB
328 lines
9.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* CPU-measurement facilities |
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* |
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* Copyright IBM Corp. 2012, 2018 |
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* Author(s): Hendrik Brueckner <[email protected]> |
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* Jan Glauber <[email protected]> |
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*/ |
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#ifndef _ASM_S390_CPU_MF_H |
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#define _ASM_S390_CPU_MF_H |
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#include <linux/errno.h> |
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#include <asm/facility.h> |
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asm(".include \"asm/cpu_mf-insn.h\"\n"); |
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#define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ |
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#define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */ |
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#define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */ |
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#define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */ |
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#define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ |
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#define CPU_MF_INT_CF_MTDA (1 << 15) /* loss of MT ctr. data alert */ |
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#define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ |
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#define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ |
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#define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_MTDA|CPU_MF_INT_CF_CACA| \ |
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CPU_MF_INT_CF_LCDA) |
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#define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ |
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CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ |
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CPU_MF_INT_SF_LSDA) |
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#define CPU_MF_SF_RIBM_NOTAV 0x1 /* Sampling unavailable */ |
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/* CPU measurement facility support */ |
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static inline int cpum_cf_avail(void) |
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{ |
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return test_facility(40) && test_facility(67); |
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} |
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static inline int cpum_sf_avail(void) |
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{ |
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return test_facility(40) && test_facility(68); |
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} |
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struct cpumf_ctr_info { |
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u16 cfvn; |
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u16 auth_ctl; |
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u16 enable_ctl; |
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u16 act_ctl; |
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u16 max_cpu; |
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u16 csvn; |
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u16 max_cg; |
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u16 reserved1; |
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u32 reserved2[12]; |
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} __packed; |
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/* QUERY SAMPLING INFORMATION block */ |
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struct hws_qsi_info_block { /* Bit(s) */ |
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unsigned int b0_13:14; /* 0-13: zeros */ |
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unsigned int as:1; /* 14: basic-sampling authorization */ |
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unsigned int ad:1; /* 15: diag-sampling authorization */ |
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unsigned int b16_21:6; /* 16-21: zeros */ |
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unsigned int es:1; /* 22: basic-sampling enable control */ |
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unsigned int ed:1; /* 23: diag-sampling enable control */ |
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unsigned int b24_29:6; /* 24-29: zeros */ |
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unsigned int cs:1; /* 30: basic-sampling activation control */ |
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unsigned int cd:1; /* 31: diag-sampling activation control */ |
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unsigned int bsdes:16; /* 4-5: size of basic sampling entry */ |
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unsigned int dsdes:16; /* 6-7: size of diagnostic sampling entry */ |
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unsigned long min_sampl_rate; /* 8-15: minimum sampling interval */ |
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unsigned long max_sampl_rate; /* 16-23: maximum sampling interval*/ |
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unsigned long tear; /* 24-31: TEAR contents */ |
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unsigned long dear; /* 32-39: DEAR contents */ |
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unsigned int rsvrd0:24; /* 40-42: reserved */ |
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unsigned int ribm:8; /* 43: Reserved by IBM */ |
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unsigned int cpu_speed; /* 44-47: CPU speed */ |
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unsigned long long rsvrd1; /* 48-55: reserved */ |
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unsigned long long rsvrd2; /* 56-63: reserved */ |
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} __packed; |
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/* SET SAMPLING CONTROLS request block */ |
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struct hws_lsctl_request_block { |
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unsigned int s:1; /* 0: maximum buffer indicator */ |
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unsigned int h:1; /* 1: part. level reserved for VM use*/ |
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unsigned long long b2_53:52;/* 2-53: zeros */ |
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unsigned int es:1; /* 54: basic-sampling enable control */ |
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unsigned int ed:1; /* 55: diag-sampling enable control */ |
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unsigned int b56_61:6; /* 56-61: - zeros */ |
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unsigned int cs:1; /* 62: basic-sampling activation control */ |
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unsigned int cd:1; /* 63: diag-sampling activation control */ |
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unsigned long interval; /* 8-15: sampling interval */ |
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unsigned long tear; /* 16-23: TEAR contents */ |
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unsigned long dear; /* 24-31: DEAR contents */ |
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/* 32-63: */ |
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unsigned long rsvrd1; /* reserved */ |
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unsigned long rsvrd2; /* reserved */ |
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unsigned long rsvrd3; /* reserved */ |
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unsigned long rsvrd4; /* reserved */ |
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} __packed; |
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struct hws_basic_entry { |
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unsigned int def:16; /* 0-15 Data Entry Format */ |
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unsigned int R:4; /* 16-19 reserved */ |
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unsigned int U:4; /* 20-23 Number of unique instruct. */ |
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unsigned int z:2; /* zeros */ |
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unsigned int T:1; /* 26 PSW DAT mode */ |
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unsigned int W:1; /* 27 PSW wait state */ |
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unsigned int P:1; /* 28 PSW Problem state */ |
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unsigned int AS:2; /* 29-30 PSW address-space control */ |
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unsigned int I:1; /* 31 entry valid or invalid */ |
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unsigned int CL:2; /* 32-33 Configuration Level */ |
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unsigned int:14; |
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unsigned int prim_asn:16; /* primary ASN */ |
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unsigned long long ia; /* Instruction Address */ |
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unsigned long long gpp; /* Guest Program Parameter */ |
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unsigned long long hpp; /* Host Program Parameter */ |
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} __packed; |
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struct hws_diag_entry { |
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unsigned int def:16; /* 0-15 Data Entry Format */ |
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unsigned int R:15; /* 16-19 and 20-30 reserved */ |
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unsigned int I:1; /* 31 entry valid or invalid */ |
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u8 data[]; /* Machine-dependent sample data */ |
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} __packed; |
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struct hws_combined_entry { |
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struct hws_basic_entry basic; /* Basic-sampling data entry */ |
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struct hws_diag_entry diag; /* Diagnostic-sampling data entry */ |
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} __packed; |
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struct hws_trailer_entry { |
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union { |
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struct { |
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unsigned int f:1; /* 0 - Block Full Indicator */ |
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unsigned int a:1; /* 1 - Alert request control */ |
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unsigned int t:1; /* 2 - Timestamp format */ |
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unsigned int :29; /* 3 - 31: Reserved */ |
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unsigned int bsdes:16; /* 32-47: size of basic SDE */ |
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unsigned int dsdes:16; /* 48-63: size of diagnostic SDE */ |
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}; |
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unsigned long long flags; /* 0 - 63: All indicators */ |
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}; |
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unsigned long long overflow; /* 64 - sample Overflow count */ |
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unsigned char timestamp[16]; /* 16 - 31 timestamp */ |
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unsigned long long reserved1; /* 32 -Reserved */ |
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unsigned long long reserved2; /* */ |
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union { /* 48 - reserved for programming use */ |
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struct { |
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unsigned int clock_base:1; /* in progusage2 */ |
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unsigned long long progusage1:63; |
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unsigned long long progusage2; |
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}; |
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unsigned long long progusage[2]; |
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}; |
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} __packed; |
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/* Load program parameter */ |
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static inline void lpp(void *pp) |
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{ |
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asm volatile(".insn s,0xb2800000,0(%0)\n":: "a" (pp) : "memory"); |
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} |
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/* Query counter information */ |
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static inline int qctri(struct cpumf_ctr_info *info) |
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{ |
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int rc = -EINVAL; |
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asm volatile ( |
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"0: .insn s,0xb28e0000,%1\n" |
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"1: lhi %0,0\n" |
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"2:\n" |
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EX_TABLE(1b, 2b) |
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: "+d" (rc), "=Q" (*info)); |
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return rc; |
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} |
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/* Load CPU-counter-set controls */ |
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static inline int lcctl(u64 ctl) |
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{ |
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int cc; |
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asm volatile ( |
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" .insn s,0xb2840000,%1\n" |
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" ipm %0\n" |
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" srl %0,28\n" |
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: "=d" (cc) : "Q" (ctl) : "cc"); |
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return cc; |
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} |
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/* Extract CPU counter */ |
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static inline int __ecctr(u64 ctr, u64 *content) |
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{ |
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u64 _content; |
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int cc; |
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asm volatile ( |
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" .insn rre,0xb2e40000,%0,%2\n" |
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" ipm %1\n" |
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" srl %1,28\n" |
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: "=d" (_content), "=d" (cc) : "d" (ctr) : "cc"); |
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*content = _content; |
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return cc; |
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} |
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/* Extract CPU counter */ |
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static inline int ecctr(u64 ctr, u64 *val) |
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{ |
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u64 content; |
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int cc; |
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cc = __ecctr(ctr, &content); |
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if (!cc) |
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*val = content; |
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return cc; |
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} |
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/* Store CPU counter multiple for a particular counter set */ |
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enum stcctm_ctr_set { |
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EXTENDED = 0, |
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BASIC = 1, |
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PROBLEM_STATE = 2, |
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CRYPTO_ACTIVITY = 3, |
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MT_DIAG = 5, |
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MT_DIAG_CLEARING = 9, /* clears loss-of-MT-ctr-data alert */ |
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}; |
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static __always_inline int stcctm(enum stcctm_ctr_set set, u64 range, u64 *dest) |
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{ |
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int cc; |
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asm volatile ( |
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" STCCTM %2,%3,%1\n" |
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" ipm %0\n" |
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" srl %0,28\n" |
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: "=d" (cc) |
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: "Q" (*dest), "d" (range), "i" (set) |
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: "cc", "memory"); |
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return cc; |
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} |
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/* Query sampling information */ |
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static inline int qsi(struct hws_qsi_info_block *info) |
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{ |
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int cc = 1; |
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asm volatile( |
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"0: .insn s,0xb2860000,%1\n" |
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"1: lhi %0,0\n" |
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"2:\n" |
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EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) |
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: "+d" (cc), "+Q" (*info)); |
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return cc ? -EINVAL : 0; |
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} |
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/* Load sampling controls */ |
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static inline int lsctl(struct hws_lsctl_request_block *req) |
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{ |
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int cc; |
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cc = 1; |
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asm volatile( |
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"0: .insn s,0xb2870000,0(%1)\n" |
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"1: ipm %0\n" |
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" srl %0,28\n" |
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"2:\n" |
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EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) |
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: "+d" (cc), "+a" (req) |
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: "m" (*req) |
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: "cc", "memory"); |
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return cc ? -EINVAL : 0; |
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} |
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/* Sampling control helper functions */ |
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#include <linux/time.h> |
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static inline unsigned long freq_to_sample_rate(struct hws_qsi_info_block *qsi, |
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unsigned long freq) |
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{ |
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return (USEC_PER_SEC / freq) * qsi->cpu_speed; |
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} |
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static inline unsigned long sample_rate_to_freq(struct hws_qsi_info_block *qsi, |
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unsigned long rate) |
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{ |
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return USEC_PER_SEC * qsi->cpu_speed / rate; |
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} |
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#define SDB_TE_ALERT_REQ_MASK 0x4000000000000000UL |
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#define SDB_TE_BUFFER_FULL_MASK 0x8000000000000000UL |
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/* Return TOD timestamp contained in an trailer entry */ |
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static inline unsigned long long trailer_timestamp(struct hws_trailer_entry *te) |
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{ |
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/* TOD in STCKE format */ |
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if (te->t) |
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return *((unsigned long long *) &te->timestamp[1]); |
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/* TOD in STCK format */ |
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return *((unsigned long long *) &te->timestamp[0]); |
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} |
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/* Return pointer to trailer entry of an sample data block */ |
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static inline unsigned long *trailer_entry_ptr(unsigned long v) |
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{ |
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void *ret; |
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ret = (void *) v; |
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ret += PAGE_SIZE; |
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ret -= sizeof(struct hws_trailer_entry); |
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return (unsigned long *) ret; |
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} |
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/* Return true if the entry in the sample data block table (sdbt) |
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* is a link to the next sdbt */ |
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static inline int is_link_entry(unsigned long *s) |
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{ |
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return *s & 0x1ul ? 1 : 0; |
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} |
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/* Return pointer to the linked sdbt */ |
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static inline unsigned long *get_next_sdbt(unsigned long *s) |
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{ |
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return (unsigned long *) (*s & ~0x1ul); |
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} |
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#endif /* _ASM_S390_CPU_MF_H */
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