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 #define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ 16 #define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */ 17 #define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */ 18 #define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */ 19 #define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ 20 #define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ 21 #define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ 22 23 #define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA) 24 #define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ 25 CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ 26 CPU_MF_INT_SF_LSDA) 27 28 /* CPU measurement facility support */ 29 static inline int cpum_cf_avail(void) 30 { 31 return MACHINE_HAS_SPP && test_facility(67); 32 } 33 34 static inline int cpum_sf_avail(void) 35 { 36 return MACHINE_HAS_SPP && test_facility(68); 37 } 38 39 40 struct cpumf_ctr_info { 41 u16 cfvn; 42 u16 auth_ctl; 43 u16 enable_ctl; 44 u16 act_ctl; 45 u16 max_cpu; 46 u16 csvn; 47 u16 max_cg; 48 u16 reserved1; 49 u32 reserved2[12]; 50 } __packed; 51 52 /* Query counter information */ 53 static inline int qctri(struct cpumf_ctr_info *info) 54 { 55 int rc = -EINVAL; 56 57 asm volatile ( 58 "0: .insn s,0xb28e0000,%1\n" 59 "1: lhi %0,0\n" 60 "2:\n" 61 EX_TABLE(1b, 2b) 62 : "+d" (rc), "=Q" (*info)); 63 return rc; 64 } 65 66 /* Load CPU-counter-set controls */ 67 static inline int lcctl(u64 ctl) 68 { 69 int cc; 70 71 asm volatile ( 72 " .insn s,0xb2840000,%1\n" 73 " ipm %0\n" 74 " srl %0,28\n" 75 : "=d" (cc) : "m" (ctl) : "cc"); 76 return cc; 77 } 78 79 /* Extract CPU counter */ 80 static inline int ecctr(u64 ctr, u64 *val) 81 { 82 register u64 content asm("4") = 0; 83 int cc; 84 85 asm volatile ( 86 " .insn rre,0xb2e40000,%0,%2\n" 87 " ipm %1\n" 88 " srl %1,28\n" 89 : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); 90 if (!cc) 91 *val = content; 92 return cc; 93 } 94 95 #endif /* _ASM_S390_CPU_MF_H */ 96