| /* | |
| * CPU-measurement facilities | |
| * | |
| * Copyright IBM Corp. 2012 | |
| * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | |
| * Jan Glauber <jang@linux.vnet.ibm.com> | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License (version 2 only) | |
| * as published by the Free Software Foundation. | |
| */ | |
| #ifndef _ASM_S390_CPU_MF_H | |
| #define _ASM_S390_CPU_MF_H | |
| #include <linux/errno.h> | |
| #include <asm/facility.h> | |
| #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_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_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) | |
| /* CPU measurement facility support */ | |
| static inline int cpum_cf_avail(void) | |
| { | |
| return MACHINE_HAS_LPP && test_facility(67); | |
| } | |
| static inline int cpum_sf_avail(void) | |
| { | |
| return MACHINE_HAS_LPP && 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; /* 40-43: reserved */ | |
| 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:16; | |
| 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:14; /* 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; | |
| struct hws_trailer_entry { | |
| union { | |
| 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 long long:61; /* 3 - 63: Reserved */ | |
| }; | |
| unsigned long long flags; /* 0 - 63: All indicators */ | |
| }; | |
| unsigned long long overflow; /* 64 - sample Overflow count */ | |
| unsigned char timestamp[16]; /* 16 - 31 timestamp */ | |
| unsigned long long reserved1; /* 32 -Reserved */ | |
| unsigned long long reserved2; /* */ | |
| unsigned long long progusage1; /* 48 - reserved for programming use */ | |
| unsigned long long progusage2; /* */ | |
| } __packed; | |
| /* Query counter information */ | |
| static inline int qctri(struct cpumf_ctr_info *info) | |
| { | |
| int rc = -EINVAL; | |
| asm volatile ( | |
| "0: .insn s,0xb28e0000,%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 ( | |
| " .insn s,0xb2840000,%1\n" | |
| " ipm %0\n" | |
| " srl %0,28\n" | |
| : "=d" (cc) : "m" (ctl) : "cc"); | |
| return cc; | |
| } | |
| /* Extract CPU counter */ | |
| static inline int __ecctr(u64 ctr, u64 *content) | |
| { | |
| register u64 _content asm("4") = 0; | |
| int cc; | |
| asm volatile ( | |
| " .insn rre,0xb2e40000,%0,%2\n" | |
| " ipm %1\n" | |
| " srl %1,28\n" | |
| : "=d" (_content), "=d" (cc) : "d" (ctr) : "cc"); | |
| *content = _content; | |
| return 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 the MT utilization counter set */ | |
| static inline int stcctm5(u64 num, u64 *val) | |
| { | |
| typedef struct { u64 _[num]; } addrtype; | |
| int cc; | |
| asm volatile ( | |
| " .insn rsy,0xeb0000000017,%2,5,%1\n" | |
| " ipm %0\n" | |
| " srl %0,28\n" | |
| : "=d" (cc), "=Q" (*(addrtype *) val) : "d" (num) : "cc"); | |
| return cc; | |
| } | |
| /* Query sampling information */ | |
| static inline int qsi(struct hws_qsi_info_block *info) | |
| { | |
| int cc; | |
| cc = 1; | |
| asm volatile( | |
| "0: .insn s,0xb2860000,0(%1)\n" | |
| "1: lhi %0,0\n" | |
| "2:\n" | |
| EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) | |
| : "=d" (cc), "+a" (info) | |
| : "m" (*info) | |
| : "cc", "memory"); | |
| return cc ? -EINVAL : 0; | |
| } | |
| /* Load sampling controls */ | |
| static inline int lsctl(struct hws_lsctl_request_block *req) | |
| { | |
| int cc; | |
| cc = 1; | |
| asm volatile( | |
| "0: .insn s,0xb2870000,0(%1)\n" | |
| "1: ipm %0\n" | |
| " srl %0,28\n" | |
| "2:\n" | |
| EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) | |
| : "+d" (cc), "+a" (req) | |
| : "m" (*req) | |
| : "cc", "memory"); | |
| return cc ? -EINVAL : 0; | |
| } | |
| /* Sampling control helper functions */ | |
| #include <linux/time.h> | |
| static inline unsigned long freq_to_sample_rate(struct hws_qsi_info_block *qsi, | |
| unsigned long freq) | |
| { | |
| return (USEC_PER_SEC / freq) * qsi->cpu_speed; | |
| } | |
| static inline unsigned long sample_rate_to_freq(struct hws_qsi_info_block *qsi, | |
| unsigned long rate) | |
| { | |
| return USEC_PER_SEC * qsi->cpu_speed / rate; | |
| } | |
| #define SDB_TE_ALERT_REQ_MASK 0x4000000000000000UL | |
| #define SDB_TE_BUFFER_FULL_MASK 0x8000000000000000UL | |
| /* Return TOD timestamp contained in an trailer entry */ | |
| static inline unsigned long long trailer_timestamp(struct hws_trailer_entry *te) | |
| { | |
| /* TOD in STCKE format */ | |
| if (te->t) | |
| return *((unsigned long long *) &te->timestamp[1]); | |
| /* TOD in STCK format */ | |
| return *((unsigned long long *) &te->timestamp[0]); | |
| } | |
| /* Return pointer to trailer entry of an sample data block */ | |
| static inline unsigned long *trailer_entry_ptr(unsigned long v) | |
| { | |
| void *ret; | |
| ret = (void *) v; | |
| ret += PAGE_SIZE; | |
| ret -= sizeof(struct hws_trailer_entry); | |
| return (unsigned long *) ret; | |
| } | |
| /* Return if the entry in the sample data block table (sdbt) | |
| * is a link to the next sdbt */ | |
| static inline int is_link_entry(unsigned long *s) | |
| { | |
| return *s & 0x1ul ? 1 : 0; | |
| } | |
| /* Return pointer to the linked sdbt */ | |
| static inline unsigned long *get_next_sdbt(unsigned long *s) | |
| { | |
| return (unsigned long *) (*s & ~0x1ul); | |
| } | |
| #endif /* _ASM_S390_CPU_MF_H */ |