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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 | ||
1e3cab2f HC |
15 | #include <asm/facility.h> |
16 | ||
b03d541a JG |
17 | #define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ |
18 | #define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */ | |
19 | #define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */ | |
20 | #define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */ | |
21 | #define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ | |
212188a5 HB |
22 | #define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ |
23 | #define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ | |
24 | ||
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 | { | |
33 | return MACHINE_HAS_SPP && test_facility(67); | |
34 | } | |
35 | ||
36 | static inline int cpum_sf_avail(void) | |
37 | { | |
38 | return MACHINE_HAS_SPP && test_facility(68); | |
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 | ||
54 | /* Query counter information */ | |
55 | static inline int qctri(struct cpumf_ctr_info *info) | |
56 | { | |
57 | int rc = -EINVAL; | |
58 | ||
59 | asm volatile ( | |
60 | "0: .insn s,0xb28e0000,%1\n" | |
61 | "1: lhi %0,0\n" | |
62 | "2:\n" | |
63 | EX_TABLE(1b, 2b) | |
64 | : "+d" (rc), "=Q" (*info)); | |
65 | return rc; | |
66 | } | |
67 | ||
68 | /* Load CPU-counter-set controls */ | |
69 | static inline int lcctl(u64 ctl) | |
70 | { | |
71 | int cc; | |
72 | ||
73 | asm volatile ( | |
74 | " .insn s,0xb2840000,%1\n" | |
75 | " ipm %0\n" | |
76 | " srl %0,28\n" | |
77 | : "=d" (cc) : "m" (ctl) : "cc"); | |
78 | return cc; | |
79 | } | |
80 | ||
81 | /* Extract CPU counter */ | |
82 | static inline int ecctr(u64 ctr, u64 *val) | |
83 | { | |
84 | register u64 content asm("4") = 0; | |
85 | int cc; | |
86 | ||
87 | asm volatile ( | |
88 | " .insn rre,0xb2e40000,%0,%2\n" | |
89 | " ipm %1\n" | |
90 | " srl %1,28\n" | |
91 | : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); | |
92 | if (!cc) | |
93 | *val = content; | |
94 | return cc; | |
95 | } | |
b03d541a | 96 | |
212188a5 | 97 | #endif /* _ASM_S390_CPU_MF_H */ |