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212188a5 HB |
1 | /* |
2 | * CPU-measurement facilities | |
3 | * | |
4 | * Copyright IBM Corp. 2012 | |
5 | * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | |
6 | * Jan Glauber <jang@linux.vnet.ibm.com> | |
7 | * | |
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. | |
11 | */ | |
b03d541a JG |
12 | #ifndef _ASM_S390_CPU_MF_H |
13 | #define _ASM_S390_CPU_MF_H | |
14 | ||
cb16b91a | 15 | #include <linux/errno.h> |
1e3cab2f HC |
16 | #include <asm/facility.h> |
17 | ||
b03d541a JG |
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 */ | |
212188a5 HB |
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 */ | |
212188a5 HB |
25 | #define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA) |
26 | #define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ | |
27 | CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ | |
28 | CPU_MF_INT_SF_LSDA) | |
29 | ||
30 | /* CPU measurement facility support */ | |
31 | static inline int cpum_cf_avail(void) | |
32 | { | |
23d18e8d | 33 | return MACHINE_HAS_LPP && test_facility(67); |
212188a5 HB |
34 | } |
35 | ||
36 | static inline int cpum_sf_avail(void) | |
37 | { | |
23d18e8d | 38 | return MACHINE_HAS_LPP && test_facility(68); |
212188a5 HB |
39 | } |
40 | ||
41 | ||
42 | struct cpumf_ctr_info { | |
43 | u16 cfvn; | |
44 | u16 auth_ctl; | |
45 | u16 enable_ctl; | |
46 | u16 act_ctl; | |
47 | u16 max_cpu; | |
48 | u16 csvn; | |
49 | u16 max_cg; | |
50 | u16 reserved1; | |
51 | u32 reserved2[12]; | |
52 | } __packed; | |
53 | ||
cf48ad83 HB |
54 | /* QUERY SAMPLING INFORMATION block */ |
55 | struct hws_qsi_info_block { /* Bit(s) */ | |
56 | unsigned int b0_13:14; /* 0-13: zeros */ | |
7e75fc3f HB |
57 | unsigned int as:1; /* 14: basic-sampling authorization */ |
58 | unsigned int ad:1; /* 15: diag-sampling authorization */ | |
59 | unsigned int b16_21:6; /* 16-21: zeros */ | |
60 | unsigned int es:1; /* 22: basic-sampling enable control */ | |
61 | unsigned int ed:1; /* 23: diag-sampling enable control */ | |
62 | unsigned int b24_29:6; /* 24-29: zeros */ | |
63 | unsigned int cs:1; /* 30: basic-sampling activation control */ | |
64 | unsigned int cd:1; /* 31: diag-sampling activation control */ | |
65 | unsigned int bsdes:16; /* 4-5: size of basic sampling entry */ | |
cf48ad83 HB |
66 | unsigned int dsdes:16; /* 6-7: size of diagnostic sampling entry */ |
67 | unsigned long min_sampl_rate; /* 8-15: minimum sampling interval */ | |
68 | unsigned long max_sampl_rate; /* 16-23: maximum sampling interval*/ | |
69 | unsigned long tear; /* 24-31: TEAR contents */ | |
70 | unsigned long dear; /* 32-39: DEAR contents */ | |
71 | unsigned int rsvrd0; /* 40-43: reserved */ | |
72 | unsigned int cpu_speed; /* 44-47: CPU speed */ | |
73 | unsigned long long rsvrd1; /* 48-55: reserved */ | |
74 | unsigned long long rsvrd2; /* 56-63: reserved */ | |
75 | } __packed; | |
76 | ||
77 | /* SET SAMPLING CONTROLS request block */ | |
78 | struct hws_lsctl_request_block { | |
79 | unsigned int s:1; /* 0: maximum buffer indicator */ | |
80 | unsigned int h:1; /* 1: part. level reserved for VM use*/ | |
81 | unsigned long long b2_53:52;/* 2-53: zeros */ | |
7e75fc3f HB |
82 | unsigned int es:1; /* 54: basic-sampling enable control */ |
83 | unsigned int ed:1; /* 55: diag-sampling enable control */ | |
84 | unsigned int b56_61:6; /* 56-61: - zeros */ | |
85 | unsigned int cs:1; /* 62: basic-sampling activation control */ | |
86 | unsigned int cd:1; /* 63: diag-sampling activation control */ | |
cf48ad83 HB |
87 | unsigned long interval; /* 8-15: sampling interval */ |
88 | unsigned long tear; /* 16-23: TEAR contents */ | |
89 | unsigned long dear; /* 24-31: DEAR contents */ | |
90 | /* 32-63: */ | |
91 | unsigned long rsvrd1; /* reserved */ | |
92 | unsigned long rsvrd2; /* reserved */ | |
93 | unsigned long rsvrd3; /* reserved */ | |
94 | unsigned long rsvrd4; /* reserved */ | |
95 | } __packed; | |
96 | ||
7e75fc3f | 97 | struct hws_basic_entry { |
cf48ad83 HB |
98 | unsigned int def:16; /* 0-15 Data Entry Format */ |
99 | unsigned int R:4; /* 16-19 reserved */ | |
100 | unsigned int U:4; /* 20-23 Number of unique instruct. */ | |
101 | unsigned int z:2; /* zeros */ | |
102 | unsigned int T:1; /* 26 PSW DAT mode */ | |
103 | unsigned int W:1; /* 27 PSW wait state */ | |
104 | unsigned int P:1; /* 28 PSW Problem state */ | |
105 | unsigned int AS:2; /* 29-30 PSW address-space control */ | |
106 | unsigned int I:1; /* 31 entry valid or invalid */ | |
107 | unsigned int:16; | |
108 | unsigned int prim_asn:16; /* primary ASN */ | |
109 | unsigned long long ia; /* Instruction Address */ | |
110 | unsigned long long gpp; /* Guest Program Parameter */ | |
111 | unsigned long long hpp; /* Host Program Parameter */ | |
112 | } __packed; | |
113 | ||
7e75fc3f HB |
114 | struct hws_diag_entry { |
115 | unsigned int def:16; /* 0-15 Data Entry Format */ | |
116 | unsigned int R:14; /* 16-19 and 20-30 reserved */ | |
117 | unsigned int I:1; /* 31 entry valid or invalid */ | |
118 | u8 data[]; /* Machine-dependent sample data */ | |
119 | } __packed; | |
120 | ||
121 | struct hws_combined_entry { | |
122 | struct hws_basic_entry basic; /* Basic-sampling data entry */ | |
123 | struct hws_diag_entry diag; /* Diagnostic-sampling data entry */ | |
124 | } __packed; | |
125 | ||
cf48ad83 | 126 | struct hws_trailer_entry { |
fcc77f50 HB |
127 | union { |
128 | struct { | |
129 | unsigned int f:1; /* 0 - Block Full Indicator */ | |
130 | unsigned int a:1; /* 1 - Alert request control */ | |
131 | unsigned int t:1; /* 2 - Timestamp format */ | |
132 | unsigned long long:61; /* 3 - 63: Reserved */ | |
133 | }; | |
134 | unsigned long long flags; /* 0 - 63: All indicators */ | |
135 | }; | |
cf48ad83 | 136 | unsigned long long overflow; /* 64 - sample Overflow count */ |
443d4beb | 137 | unsigned char timestamp[16]; /* 16 - 31 timestamp */ |
cf48ad83 HB |
138 | unsigned long long reserved1; /* 32 -Reserved */ |
139 | unsigned long long reserved2; /* */ | |
140 | unsigned long long progusage1; /* 48 - reserved for programming use */ | |
141 | unsigned long long progusage2; /* */ | |
142 | } __packed; | |
143 | ||
212188a5 HB |
144 | /* Query counter information */ |
145 | static inline int qctri(struct cpumf_ctr_info *info) | |
146 | { | |
147 | int rc = -EINVAL; | |
148 | ||
149 | asm volatile ( | |
150 | "0: .insn s,0xb28e0000,%1\n" | |
151 | "1: lhi %0,0\n" | |
152 | "2:\n" | |
153 | EX_TABLE(1b, 2b) | |
154 | : "+d" (rc), "=Q" (*info)); | |
155 | return rc; | |
156 | } | |
157 | ||
158 | /* Load CPU-counter-set controls */ | |
159 | static inline int lcctl(u64 ctl) | |
160 | { | |
161 | int cc; | |
162 | ||
163 | asm volatile ( | |
164 | " .insn s,0xb2840000,%1\n" | |
165 | " ipm %0\n" | |
166 | " srl %0,28\n" | |
167 | : "=d" (cc) : "m" (ctl) : "cc"); | |
168 | return cc; | |
169 | } | |
170 | ||
171 | /* Extract CPU counter */ | |
172 | static inline int ecctr(u64 ctr, u64 *val) | |
173 | { | |
174 | register u64 content asm("4") = 0; | |
175 | int cc; | |
176 | ||
177 | asm volatile ( | |
178 | " .insn rre,0xb2e40000,%0,%2\n" | |
179 | " ipm %1\n" | |
180 | " srl %1,28\n" | |
181 | : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); | |
182 | if (!cc) | |
183 | *val = content; | |
184 | return cc; | |
185 | } | |
b03d541a | 186 | |
10ad34bc MS |
187 | /* Store CPU counter multiple for the MT utilization counter set */ |
188 | static inline int stcctm5(u64 num, u64 *val) | |
189 | { | |
190 | typedef struct { u64 _[num]; } addrtype; | |
191 | int cc; | |
192 | ||
193 | asm volatile ( | |
194 | " .insn rsy,0xeb0000000017,%2,5,%1\n" | |
195 | " ipm %0\n" | |
196 | " srl %0,28\n" | |
197 | : "=d" (cc), "=Q" (*(addrtype *) val) : "d" (num) : "cc"); | |
198 | return cc; | |
199 | } | |
200 | ||
cf48ad83 HB |
201 | /* Query sampling information */ |
202 | static inline int qsi(struct hws_qsi_info_block *info) | |
203 | { | |
204 | int cc; | |
205 | cc = 1; | |
206 | ||
207 | asm volatile( | |
208 | "0: .insn s,0xb2860000,0(%1)\n" | |
209 | "1: lhi %0,0\n" | |
210 | "2:\n" | |
211 | EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) | |
212 | : "=d" (cc), "+a" (info) | |
213 | : "m" (*info) | |
214 | : "cc", "memory"); | |
215 | ||
216 | return cc ? -EINVAL : 0; | |
217 | } | |
218 | ||
219 | /* Load sampling controls */ | |
220 | static inline int lsctl(struct hws_lsctl_request_block *req) | |
221 | { | |
222 | int cc; | |
223 | ||
224 | cc = 1; | |
225 | asm volatile( | |
226 | "0: .insn s,0xb2870000,0(%1)\n" | |
227 | "1: ipm %0\n" | |
228 | " srl %0,28\n" | |
229 | "2:\n" | |
230 | EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) | |
231 | : "+d" (cc), "+a" (req) | |
232 | : "m" (*req) | |
233 | : "cc", "memory"); | |
234 | ||
235 | return cc ? -EINVAL : 0; | |
236 | } | |
237 | ||
238 | /* Sampling control helper functions */ | |
239 | ||
8c069ff4 HB |
240 | #include <linux/time.h> |
241 | ||
242 | static inline unsigned long freq_to_sample_rate(struct hws_qsi_info_block *qsi, | |
243 | unsigned long freq) | |
244 | { | |
245 | return (USEC_PER_SEC / freq) * qsi->cpu_speed; | |
246 | } | |
247 | ||
248 | static inline unsigned long sample_rate_to_freq(struct hws_qsi_info_block *qsi, | |
249 | unsigned long rate) | |
250 | { | |
251 | return USEC_PER_SEC * qsi->cpu_speed / rate; | |
252 | } | |
253 | ||
cf48ad83 HB |
254 | #define SDB_TE_ALERT_REQ_MASK 0x4000000000000000UL |
255 | #define SDB_TE_BUFFER_FULL_MASK 0x8000000000000000UL | |
256 | ||
443d4beb HB |
257 | /* Return TOD timestamp contained in an trailer entry */ |
258 | static inline unsigned long long trailer_timestamp(struct hws_trailer_entry *te) | |
259 | { | |
260 | /* TOD in STCKE format */ | |
261 | if (te->t) | |
262 | return *((unsigned long long *) &te->timestamp[1]); | |
263 | ||
264 | /* TOD in STCK format */ | |
265 | return *((unsigned long long *) &te->timestamp[0]); | |
266 | } | |
267 | ||
cf48ad83 HB |
268 | /* Return pointer to trailer entry of an sample data block */ |
269 | static inline unsigned long *trailer_entry_ptr(unsigned long v) | |
270 | { | |
271 | void *ret; | |
272 | ||
273 | ret = (void *) v; | |
274 | ret += PAGE_SIZE; | |
275 | ret -= sizeof(struct hws_trailer_entry); | |
276 | ||
277 | return (unsigned long *) ret; | |
278 | } | |
279 | ||
280 | /* Return if the entry in the sample data block table (sdbt) | |
281 | * is a link to the next sdbt */ | |
282 | static inline int is_link_entry(unsigned long *s) | |
283 | { | |
284 | return *s & 0x1ul ? 1 : 0; | |
285 | } | |
286 | ||
287 | /* Return pointer to the linked sdbt */ | |
288 | static inline unsigned long *get_next_sdbt(unsigned long *s) | |
289 | { | |
290 | return (unsigned long *) (*s & ~0x1ul); | |
291 | } | |
212188a5 | 292 | #endif /* _ASM_S390_CPU_MF_H */ |