2 * Copyright (C) ARM Limited 2010-2013. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
12 #include <linux/version.h>
15 #include <linux/list.h>
17 #define GATOR_PERF_SUPPORT LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0)
18 #define GATOR_PERF_PMU_SUPPORT GATOR_PERF_SUPPORT && defined(CONFIG_PERF_EVENTS) && (!(defined(__arm__) || defined(__aarch64__)) || defined(CONFIG_HW_PERF_EVENTS))
19 #define GATOR_NO_PERF_SUPPORT (!(GATOR_PERF_SUPPORT))
20 #define GATOR_CPU_FREQ_SUPPORT (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38)) && defined(CONFIG_CPU_FREQ)
21 #define GATOR_IKS_SUPPORT defined(CONFIG_BL_SWITCHER)
27 #define ARM11MPCORE 0xb02
28 #define CORTEX_A5 0xc05
29 #define CORTEX_A7 0xc07
30 #define CORTEX_A8 0xc08
31 #define CORTEX_A9 0xc09
32 #define CORTEX_A12 0xc0d
33 #define CORTEX_A15 0xc0f
34 #define SCORPION 0x00f
35 #define SCORPIONMP 0x02d
36 #define KRAITSIM 0x049
38 #define KRAIT_S4_PRO 0x06f
39 #define CORTEX_A53 0xd03
40 #define CORTEX_A57 0xd07
44 #define MAXSIZE_CORE_NAME 32
48 // Human readable name
49 const char core_name[MAXSIZE_CORE_NAME];
51 const char * const pmu_name;
53 const char * const pmnc_name;
54 // compatible from Documentation/devicetree/bindings/arm/cpus.txt
55 const char * const dt_name;
56 const int pmnc_counters;
59 const struct gator_cpu *gator_find_cpu_by_cpuid(const u32 cpuid);
60 const struct gator_cpu *gator_find_cpu_by_pmu_name(const char *const name);
62 /******************************************************************************
64 ******************************************************************************/
65 int gatorfs_create_file_perm(struct super_block *sb, struct dentry *root,
67 const struct file_operations *fops, int perm);
69 struct dentry *gatorfs_mkdir(struct super_block *sb, struct dentry *root,
72 int gatorfs_create_ulong(struct super_block *sb, struct dentry *root,
73 char const *name, unsigned long *val);
75 int gatorfs_create_ro_ulong(struct super_block *sb, struct dentry *root,
76 char const *name, unsigned long *val);
78 void gator_op_create_files(struct super_block *sb, struct dentry *root);
80 /******************************************************************************
82 ******************************************************************************/
83 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
84 # error Kernels prior to 2.6.32 not supported
85 #elif LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
86 # define GATOR_DEFINE_PROBE(probe_name, proto) \
87 static void probe_##probe_name(PARAMS(proto))
88 # define GATOR_REGISTER_TRACE(probe_name) \
89 register_trace_##probe_name(probe_##probe_name)
90 # define GATOR_UNREGISTER_TRACE(probe_name) \
91 unregister_trace_##probe_name(probe_##probe_name)
93 # define GATOR_DEFINE_PROBE(probe_name, proto) \
94 static void probe_##probe_name(void *data, PARAMS(proto))
95 # define GATOR_REGISTER_TRACE(probe_name) \
96 register_trace_##probe_name(probe_##probe_name, NULL)
97 # define GATOR_UNREGISTER_TRACE(probe_name) \
98 unregister_trace_##probe_name(probe_##probe_name, NULL)
101 /******************************************************************************
103 ******************************************************************************/
104 struct gator_interface {
105 void (*shutdown)(void); // Complementary function to init
106 int (*create_files)(struct super_block *sb, struct dentry *root);
108 void (*stop)(void); // Complementary function to start
109 int (*online)(int **buffer, bool migrate);
110 int (*offline)(int **buffer, bool migrate);
111 void (*online_dispatch)(int cpu, bool migrate); // called in process context but may not be running on core 'cpu'
112 void (*offline_dispatch)(int cpu, bool migrate); // called in process context but may not be running on core 'cpu'
113 int (*read)(int **buffer);
114 int (*read64)(long long **buffer);
115 struct list_head list;
118 // gator_events_init is used as a search term in gator_events.sh
119 #define gator_events_init(initfn) \
120 static inline int __gator_events_init_test(void) \
123 int gator_events_install(struct gator_interface *interface);
124 int gator_events_get_key(void);
125 u32 gator_cpuid(void);
127 void gator_backtrace_handler(struct pt_regs *const regs);
129 #if !GATOR_IKS_SUPPORT
131 #define get_physical_cpu() smp_processor_id()
132 #define lcpu_to_pcpu(lcpu) lcpu
133 #define pcpu_to_lcpu(pcpu) pcpu
137 #define get_physical_cpu() lcpu_to_pcpu(get_logical_cpu())
138 int lcpu_to_pcpu(const int lcpu);
139 int pcpu_to_lcpu(const int pcpu);
143 #define get_logical_cpu() smp_processor_id()
144 #define on_primary_core() (get_logical_cpu() == 0)