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 */ 12 #ifndef _ASM_S390_CPU_MF_H 13 #define _ASM_S390_CPU_MF_H 14 15 #include <asm/facility.h> 16 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 */ 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 #define CPU_MF_INT_RI_HALTED (1 << 5) /* run-time instr. halted */ 25 #define CPU_MF_INT_RI_BUF_FULL (1 << 4) /* run-time instr. program 26 buffer full */ 27 28 #define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA) 29 #define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ 30 CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ 31 CPU_MF_INT_SF_LSDA) 32 #define CPU_MF_INT_RI_MASK (CPU_MF_INT_RI_HALTED|CPU_MF_INT_RI_BUF_FULL) 33 34 /* CPU measurement facility support */ 35 static inline int cpum_cf_avail(void) 36 { 37 return MACHINE_HAS_SPP && test_facility(67); 38 } 39 40 static inline int cpum_sf_avail(void) 41 { 42 return MACHINE_HAS_SPP && test_facility(68); 43 } 44 45 46 struct cpumf_ctr_info { 47 u16 cfvn; 48 u16 auth_ctl; 49 u16 enable_ctl; 50 u16 act_ctl; 51 u16 max_cpu; 52 u16 csvn; 53 u16 max_cg; 54 u16 reserved1; 55 u32 reserved2[12]; 56 } __packed; 57 58 /* Query counter information */ 59 static inline int qctri(struct cpumf_ctr_info *info) 60 { 61 int rc = -EINVAL; 62 63 asm volatile ( 64 "0: .insn s,0xb28e0000,%1\n" 65 "1: lhi %0,0\n" 66 "2:\n" 67 EX_TABLE(1b, 2b) 68 : "+d" (rc), "=Q" (*info)); 69 return rc; 70 } 71 72 /* Load CPU-counter-set controls */ 73 static inline int lcctl(u64 ctl) 74 { 75 int cc; 76 77 asm volatile ( 78 " .insn s,0xb2840000,%1\n" 79 " ipm %0\n" 80 " srl %0,28\n" 81 : "=d" (cc) : "m" (ctl) : "cc"); 82 return cc; 83 } 84 85 /* Extract CPU counter */ 86 static inline int ecctr(u64 ctr, u64 *val) 87 { 88 register u64 content asm("4") = 0; 89 int cc; 90 91 asm volatile ( 92 " .insn rre,0xb2e40000,%0,%2\n" 93 " ipm %1\n" 94 " srl %1,28\n" 95 : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); 96 if (!cc) 97 *val = content; 98 return cc; 99 } 100 101 #endif /* _ASM_S390_CPU_MF_H */ 102