| /* | |
| * CPU-measurement facilities | |
| * | |
| * Copyright IBM Corp. 2012 | |
| * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | |
| * Jan Glauber <jang@linux.vnet.ibm.com> | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License (version 2 only) | |
| * as published by the Free Software Foundation. | |
| */ | |
| #ifndef _ASM_S390_CPU_MF_H | |
| #define _ASM_S390_CPU_MF_H | |
| #include <linux/errno.h> | |
| #include <asm/facility.h> | |
| #define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ | |
| #define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */ | |
| #define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */ | |
| #define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */ | |
| #define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ | |
| #define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ | |
| #define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ | |
| #define CPU_MF_INT_RI_HALTED (1 << 5) /* run-time instr. halted */ | |
| #define CPU_MF_INT_RI_BUF_FULL (1 << 4) /* run-time instr. program | |
| buffer full */ | |
| #define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA) | |
| #define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ | |
| CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ | |
| CPU_MF_INT_SF_LSDA) | |
| #define CPU_MF_INT_RI_MASK (CPU_MF_INT_RI_HALTED|CPU_MF_INT_RI_BUF_FULL) | |
| /* CPU measurement facility support */ | |
| static inline int cpum_cf_avail(void) | |
| { | |
| return MACHINE_HAS_LPP && test_facility(67); | |
| } | |
| static inline int cpum_sf_avail(void) | |
| { | |
| return MACHINE_HAS_LPP && test_facility(68); | |
| } | |
| struct cpumf_ctr_info { | |
| u16 cfvn; | |
| u16 auth_ctl; | |
| u16 enable_ctl; | |
| u16 act_ctl; | |
| u16 max_cpu; | |
| u16 csvn; | |
| u16 max_cg; | |
| u16 reserved1; | |
| u32 reserved2[12]; | |
| } __packed; | |
| /* Query counter information */ | |
| static inline int qctri(struct cpumf_ctr_info *info) | |
| { | |
| int rc = -EINVAL; | |
| asm volatile ( | |
| "0: .insn s,0xb28e0000,%1\n" | |
| "1: lhi %0,0\n" | |
| "2:\n" | |
| EX_TABLE(1b, 2b) | |
| : "+d" (rc), "=Q" (*info)); | |
| return rc; | |
| } | |
| /* Load CPU-counter-set controls */ | |
| static inline int lcctl(u64 ctl) | |
| { | |
| int cc; | |
| asm volatile ( | |
| " .insn s,0xb2840000,%1\n" | |
| " ipm %0\n" | |
| " srl %0,28\n" | |
| : "=d" (cc) : "m" (ctl) : "cc"); | |
| return cc; | |
| } | |
| /* Extract CPU counter */ | |
| static inline int ecctr(u64 ctr, u64 *val) | |
| { | |
| register u64 content asm("4") = 0; | |
| int cc; | |
| asm volatile ( | |
| " .insn rre,0xb2e40000,%0,%2\n" | |
| " ipm %1\n" | |
| " srl %1,28\n" | |
| : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); | |
| if (!cc) | |
| *val = content; | |
| return cc; | |
| } | |
| #endif /* _ASM_S390_CPU_MF_H */ |