projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ | |
| e4b8b3f3 JG |
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 | |
| 27 | buffer full */ | |
| 212188a5 HB |
28 | |
| 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| \ | |
| 32 | CPU_MF_INT_SF_LSDA) | |
| e4b8b3f3 | 33 | #define CPU_MF_INT_RI_MASK (CPU_MF_INT_RI_HALTED|CPU_MF_INT_RI_BUF_FULL) |
| 212188a5 HB |
34 | |
| 35 | /* CPU measurement facility support */ | |
| 36 | static inline int cpum_cf_avail(void) | |
| 37 | { | |
| 23d18e8d | 38 | return MACHINE_HAS_LPP && test_facility(67); |
| 212188a5 HB |
39 | } |
| 40 | ||
| 41 | static inline int cpum_sf_avail(void) | |
| 42 | { | |
| 23d18e8d | 43 | return MACHINE_HAS_LPP && test_facility(68); |
| 212188a5 HB |
44 | } |
| 45 | ||
| 46 | ||
| 47 | struct cpumf_ctr_info { | |
| 48 | u16 cfvn; | |
| 49 | u16 auth_ctl; | |
| 50 | u16 enable_ctl; | |
| 51 | u16 act_ctl; | |
| 52 | u16 max_cpu; | |
| 53 | u16 csvn; | |
| 54 | u16 max_cg; | |
| 55 | u16 reserved1; | |
| 56 | u32 reserved2[12]; | |
| 57 | } __packed; | |
| 58 | ||
| 59 | /* Query counter information */ | |
| 60 | static inline int qctri(struct cpumf_ctr_info *info) | |
| 61 | { | |
| 62 | int rc = -EINVAL; | |
| 63 | ||
| 64 | asm volatile ( | |
| 65 | "0: .insn s,0xb28e0000,%1\n" | |
| 66 | "1: lhi %0,0\n" | |
| 67 | "2:\n" | |
| 68 | EX_TABLE(1b, 2b) | |
| 69 | : "+d" (rc), "=Q" (*info)); | |
| 70 | return rc; | |
| 71 | } | |
| 72 | ||
| 73 | /* Load CPU-counter-set controls */ | |
| 74 | static inline int lcctl(u64 ctl) | |
| 75 | { | |
| 76 | int cc; | |
| 77 | ||
| 78 | asm volatile ( | |
| 79 | " .insn s,0xb2840000,%1\n" | |
| 80 | " ipm %0\n" | |
| 81 | " srl %0,28\n" | |
| 82 | : "=d" (cc) : "m" (ctl) : "cc"); | |
| 83 | return cc; | |
| 84 | } | |
| 85 | ||
| 86 | /* Extract CPU counter */ | |
| 87 | static inline int ecctr(u64 ctr, u64 *val) | |
| 88 | { | |
| 89 | register u64 content asm("4") = 0; | |
| 90 | int cc; | |
| 91 | ||
| 92 | asm volatile ( | |
| 93 | " .insn rre,0xb2e40000,%0,%2\n" | |
| 94 | " ipm %1\n" | |
| 95 | " srl %1,28\n" | |
| 96 | : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); | |
| 97 | if (!cc) | |
| 98 | *val = content; | |
| 99 | return cc; | |
| 100 | } | |
| b03d541a | 101 | |
| 212188a5 | 102 | #endif /* _ASM_S390_CPU_MF_H */ |