2 * CPU-measurement facilities
4 * Copyright IBM Corp. 2012
5 * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
6 * Jan Glauber <jang@linux.vnet.ibm.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License (version 2 only)
10 * as published by the Free Software Foundation.
12 #ifndef _ASM_S390_CPU_MF_H
13 #define _ASM_S390_CPU_MF_H
15 #include <linux/errno.h>
16 #include <asm/facility.h>
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_CACA (1 << 7) /* counter auth. change alert */
24 #define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */
25 #define CPU_MF_INT_RI_HALTED (1 << 5) /* run-time instr. halted */
26 #define CPU_MF_INT_RI_BUF_FULL (1 << 4) /* run-time instr. program
29 #define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA)
30 #define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \
31 CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \
33 #define CPU_MF_INT_RI_MASK (CPU_MF_INT_RI_HALTED|CPU_MF_INT_RI_BUF_FULL)
35 /* CPU measurement facility support */
36 static inline int cpum_cf_avail(void)
38 return MACHINE_HAS_LPP && test_facility(67);
41 static inline int cpum_sf_avail(void)
43 return MACHINE_HAS_LPP && test_facility(68);
47 struct cpumf_ctr_info {
59 /* QUERY SAMPLING INFORMATION block */
60 struct hws_qsi_info_block { /* Bit(s) */
61 unsigned int b0_13:14; /* 0-13: zeros */
62 unsigned int as:1; /* 14: sampling authorisation control*/
63 unsigned int b15_21:7; /* 15-21: zeros */
64 unsigned int es:1; /* 22: sampling enable control */
65 unsigned int b23_29:7; /* 23-29: zeros */
66 unsigned int cs:1; /* 30: sampling activation control */
67 unsigned int:1; /* 31: reserved */
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; /* 40-43: reserved */
75 unsigned int cpu_speed; /* 44-47: CPU speed */
76 unsigned long long rsvrd1; /* 48-55: reserved */
77 unsigned long long rsvrd2; /* 56-63: reserved */
80 /* SET SAMPLING CONTROLS request block */
81 struct hws_lsctl_request_block {
82 unsigned int s:1; /* 0: maximum buffer indicator */
83 unsigned int h:1; /* 1: part. level reserved for VM use*/
84 unsigned long long b2_53:52;/* 2-53: zeros */
85 unsigned int es:1; /* 54: sampling enable control */
86 unsigned int b55_61:7; /* 55-61: - zeros */
87 unsigned int cs:1; /* 62: sampling activation control */
88 unsigned int b63:1; /* 63: zero */
89 unsigned long interval; /* 8-15: sampling interval */
90 unsigned long tear; /* 16-23: TEAR contents */
91 unsigned long dear; /* 24-31: DEAR contents */
93 unsigned long rsvrd1; /* reserved */
94 unsigned long rsvrd2; /* reserved */
95 unsigned long rsvrd3; /* reserved */
96 unsigned long rsvrd4; /* reserved */
100 struct hws_data_entry {
101 unsigned int def:16; /* 0-15 Data Entry Format */
102 unsigned int R:4; /* 16-19 reserved */
103 unsigned int U:4; /* 20-23 Number of unique instruct. */
104 unsigned int z:2; /* zeros */
105 unsigned int T:1; /* 26 PSW DAT mode */
106 unsigned int W:1; /* 27 PSW wait state */
107 unsigned int P:1; /* 28 PSW Problem state */
108 unsigned int AS:2; /* 29-30 PSW address-space control */
109 unsigned int I:1; /* 31 entry valid or invalid */
111 unsigned int prim_asn:16; /* primary ASN */
112 unsigned long long ia; /* Instruction Address */
113 unsigned long long gpp; /* Guest Program Parameter */
114 unsigned long long hpp; /* Host Program Parameter */
117 struct hws_trailer_entry {
120 unsigned int f:1; /* 0 - Block Full Indicator */
121 unsigned int a:1; /* 1 - Alert request control */
122 unsigned int t:1; /* 2 - Timestamp format */
123 unsigned long long:61; /* 3 - 63: Reserved */
125 unsigned long long flags; /* 0 - 63: All indicators */
127 unsigned long long overflow; /* 64 - sample Overflow count */
128 unsigned char timestamp[16]; /* 16 - 31 timestamp */
129 unsigned long long reserved1; /* 32 -Reserved */
130 unsigned long long reserved2; /* */
131 unsigned long long progusage1; /* 48 - reserved for programming use */
132 unsigned long long progusage2; /* */
135 /* Query counter information */
136 static inline int qctri(struct cpumf_ctr_info *info)
141 "0: .insn s,0xb28e0000,%1\n"
145 : "+d" (rc), "=Q" (*info));
149 /* Load CPU-counter-set controls */
150 static inline int lcctl(u64 ctl)
155 " .insn s,0xb2840000,%1\n"
158 : "=d" (cc) : "m" (ctl) : "cc");
162 /* Extract CPU counter */
163 static inline int ecctr(u64 ctr, u64 *val)
165 register u64 content asm("4") = 0;
169 " .insn rre,0xb2e40000,%0,%2\n"
172 : "=d" (content), "=d" (cc) : "d" (ctr) : "cc");
178 /* Query sampling information */
179 static inline int qsi(struct hws_qsi_info_block *info)
185 "0: .insn s,0xb2860000,0(%1)\n"
188 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
189 : "=d" (cc), "+a" (info)
193 return cc ? -EINVAL : 0;
196 /* Load sampling controls */
197 static inline int lsctl(struct hws_lsctl_request_block *req)
203 "0: .insn s,0xb2870000,0(%1)\n"
207 EX_TABLE(0b, 2b) EX_TABLE(1b, 2b)
208 : "+d" (cc), "+a" (req)
212 return cc ? -EINVAL : 0;
215 /* Sampling control helper functions */
217 #include <linux/time.h>
219 static inline unsigned long freq_to_sample_rate(struct hws_qsi_info_block *qsi,
222 return (USEC_PER_SEC / freq) * qsi->cpu_speed;
225 static inline unsigned long sample_rate_to_freq(struct hws_qsi_info_block *qsi,
228 return USEC_PER_SEC * qsi->cpu_speed / rate;
231 #define SDB_TE_ALERT_REQ_MASK 0x4000000000000000UL
232 #define SDB_TE_BUFFER_FULL_MASK 0x8000000000000000UL
234 /* Return TOD timestamp contained in an trailer entry */
235 static inline unsigned long long trailer_timestamp(struct hws_trailer_entry *te)
237 /* TOD in STCKE format */
239 return *((unsigned long long *) &te->timestamp[1]);
241 /* TOD in STCK format */
242 return *((unsigned long long *) &te->timestamp[0]);
245 /* Return pointer to trailer entry of an sample data block */
246 static inline unsigned long *trailer_entry_ptr(unsigned long v)
252 ret -= sizeof(struct hws_trailer_entry);
254 return (unsigned long *) ret;
257 /* Return if the entry in the sample data block table (sdbt)
258 * is a link to the next sdbt */
259 static inline int is_link_entry(unsigned long *s)
261 return *s & 0x1ul ? 1 : 0;
264 /* Return pointer to the linked sdbt */
265 static inline unsigned long *get_next_sdbt(unsigned long *s)
267 return (unsigned long *) (*s & ~0x1ul);
269 #endif /* _ASM_S390_CPU_MF_H */