master
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2013 Justin Hibbits
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _DEV_HWPMC_POWERPC_H_
30#define _DEV_HWPMC_POWERPC_H_ 1
31
32#ifdef _KERNEL
33
34#define POWERPC_PMC_CAPS (PMC_CAP_INTERRUPT | PMC_CAP_USER | \
35 PMC_CAP_SYSTEM | PMC_CAP_EDGE | \
36 PMC_CAP_THRESHOLD | PMC_CAP_READ | \
37 PMC_CAP_WRITE | PMC_CAP_INVERT | \
38 PMC_CAP_QUALIFIER)
39
40#define POWERPC_PMC_KERNEL_ENABLE (0x1 << 30)
41#define POWERPC_PMC_USER_ENABLE (0x1 << 31)
42
43#define POWERPC_PMC_ENABLE (POWERPC_PMC_KERNEL_ENABLE | POWERPC_PMC_USER_ENABLE)
44#define POWERPC_RELOAD_COUNT_TO_PERFCTR_VALUE(V) (0x80000000-(V))
45#define POWERPC_PERFCTR_VALUE_TO_RELOAD_COUNT(P) (0x80000000-(P))
46
47#define POWERPC_MAX_PMC_VALUE 0x7fffffffUL
48
49#define POWERPC_PMC_HAS_OVERFLOWED(n) (powerpc_pmcn_read(n) & (0x1 << 31))
50
51/*
52 * PMC value is used with OVERFLOWCNT to simulate a 64-bit counter to the
53 * machine independent part of hwpmc.
54 */
55#define PPC_OVERFLOWCNT(pm) (pm)->pm_md.pm_powerpc.pm_powerpc_overflowcnt
56#define PPC_OVERFLOWCNT_MAX 0x200000000UL
57
58struct powerpc_cpu {
59 enum pmc_class pc_class;
60 struct pmc_hw pc_ppcpmcs[];
61};
62
63struct pmc_ppc_event {
64 enum pmc_event pe_event;
65 uint32_t pe_flags;
66#define PMC_FLAG_PMC1 0x01
67#define PMC_FLAG_PMC2 0x02
68#define PMC_FLAG_PMC3 0x04
69#define PMC_FLAG_PMC4 0x08
70#define PMC_FLAG_PMC5 0x10
71#define PMC_FLAG_PMC6 0x20
72#define PMC_FLAG_PMC7 0x40
73#define PMC_FLAG_PMC8 0x80
74 uint32_t pe_code;
75};
76
77extern struct powerpc_cpu **powerpc_pcpu;
78extern struct pmc_ppc_event *ppc_event_codes;
79extern size_t ppc_event_codes_size;
80extern int ppc_event_first;
81extern int ppc_event_last;
82extern int ppc_max_pmcs;
83extern enum pmc_class ppc_class;
84
85extern void (*powerpc_set_pmc)(int cpu, int ri, int config);
86extern pmc_value_t (*powerpc_pmcn_read)(unsigned int pmc);
87extern void (*powerpc_pmcn_write)(unsigned int pmc, uint32_t val);
88extern void (*powerpc_resume_pmc)(bool ie);
89
90int pmc_e500_initialize(struct pmc_mdep *pmc_mdep);
91int pmc_mpc7xxx_initialize(struct pmc_mdep *pmc_mdep);
92int pmc_ppc970_initialize(struct pmc_mdep *pmc_mdep);
93int pmc_power8_initialize(struct pmc_mdep *pmc_mdep);
94
95int powerpc_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc);
96int powerpc_get_config(int cpu, int ri, struct pmc **ppm);
97int powerpc_pcpu_init(struct pmc_mdep *md, int cpu);
98int powerpc_pcpu_fini(struct pmc_mdep *md, int cpu);
99int powerpc_allocate_pmc(int cpu, int ri, struct pmc *pm,
100 const struct pmc_op_pmcallocate *a);
101int powerpc_release_pmc(int cpu, int ri, struct pmc *pmc);
102int powerpc_start_pmc(int cpu, int ri, struct pmc *pm);
103int powerpc_stop_pmc(int cpu, int ri, struct pmc *pm);
104int powerpc_config_pmc(int cpu, int ri, struct pmc *pm);
105pmc_value_t powerpc_pmcn_read_default(unsigned int pmc);
106void powerpc_pmcn_write_default(unsigned int pmc, uint32_t val);
107int powerpc_read_pmc(int cpu, int ri, struct pmc *pm, pmc_value_t *v);
108int powerpc_write_pmc(int cpu, int ri, struct pmc *pm, pmc_value_t v);
109int powerpc_pmc_intr(struct trapframe *tf);
110
111#endif /* _KERNEL */
112
113#endif /* _DEV_HWPMC_POWERPC_H_ */