Moving performance counter/control defines/helper functions into a single
header file, so that software using the MIPS PMU can share the code.
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@xxxxxxxxx>
---
arch/mips/include/asm/pmu.h | 212 +++++++++++++++++++++++++++++++
arch/mips/oprofile/op_model_loongson2.c | 18 +---
arch/mips/oprofile/op_model_mipsxx.c | 147 +---------------------
arch/mips/oprofile/op_model_rm9000.c | 16 +--
4 files changed, 217 insertions(+), 176 deletions(-)
create mode 100644 arch/mips/include/asm/pmu.h
diff --git a/arch/mips/include/asm/pmu.h b/arch/mips/include/asm/pmu.h
new file mode 100644
index 0000000..c84d70c
--- /dev/null
+++ b/arch/mips/include/asm/pmu.h
@@ -0,0 +1,212 @@
+/*
+ * linux/arch/mips/include/asm/pmu.h
+ *
+ * Copyright (C) 2004, 05, 06 by Ralf Baechle
+ * Copyright (C) 2005 by MIPS Technologies, Inc.
+ * Copyright (C) 2009 Lemote Inc.
+ * Author: Yanhua <yanh@xxxxxxxxxx>
+ * Author: Wu Zhangjin <wuzhangjin@xxxxxxxxx>
+ * Copyright (C) 2010 MIPS Technologies, Inc.
+ * Author: Deng-Cheng Zhu (move things from Oprofile to common place)
+ *
+ * This file is shared by Oprofile and Perf. It is also shared across the
+ * Oprofile implementation for different MIPS CPUs.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __MIPS_PMU_H__
+#define __MIPS_PMU_H__
+
+/* Used by Perf-events */
+#define MIPS_MAX_HWEVENTS 4
+
+/* mipsxx */
+#define M_CONFIG1_PC (1 << 4)
+
+#define M_PERFCTL_EXL (1UL << 0)
+#define M_PERFCTL_KERNEL (1UL << 1)
+#define M_PERFCTL_SUPERVISOR (1UL << 2)
+#define M_PERFCTL_USER (1UL << 3)
+#define M_PERFCTL_INTERRUPT_ENABLE (1UL << 4)
+#define M_PERFCTL_EVENT(event) (((event) & 0x3ff) << 5)
+#define M_PERFCTL_VPEID(vpe) ((vpe) << 16)
+#define M_PERFCTL_MT_EN(filter) ((filter) << 20)
+#define M_TC_EN_ALL M_PERFCTL_MT_EN(0)
+#define M_TC_EN_VPE M_PERFCTL_MT_EN(1)
+#define M_TC_EN_TC M_PERFCTL_MT_EN(2)
+#define M_PERFCTL_TCID(tcid) ((tcid) << 22)
+#define M_PERFCTL_WIDE (1UL << 30)
+#define M_PERFCTL_MORE (1UL << 31)
+
+#define M_COUNTER_OVERFLOW (1UL << 31)
+
+#ifdef CONFIG_MIPS_MT_SMP
+static int cpu_has_mipsmt_pertccounters;
+#define WHAT (M_TC_EN_VPE | \
+ M_PERFCTL_VPEID(cpu_data[smp_processor_id()].vpe_id))
+/*
+ * FIXME: For VSMP, vpe_id() is redefined for Perf, because
+ * cpu_data[cpuid].vpe_id reports 0 for _both_ CPUs. WHAT is not
+ * redefined because Perf does not use it.
+ */
+#if defined(CONFIG_HW_PERF_EVENTS)
+#define vpe_id() (cpu_has_mipsmt_pertccounters ? \
+ 0 : smp_processor_id())
+#else
+#define vpe_id() (cpu_has_mipsmt_pertccounters ? \
+ 0 : cpu_data[smp_processor_id()].vpe_id)
+#endif
+/*
+ * The number of bits to shift to convert between counters per core and
+ * counters per VPE. There is no reasonable interface atm to obtain the
+ * number of VPEs used by Linux and in the 34K this number is fixed to two
+ * anyways so we hardcore a few things here for the moment. The way it's
+ * done here will ensure that oprofile VSMP kernel will run right on a lesser
+ * core like a 24K also or with maxcpus=1.
+ */
+static inline unsigned int vpe_shift(void)
+{
+ if (num_possible_cpus() > 1)
+ return 1;
+
+ return 0;
+}
+#else
+#define WHAT 0
+#define vpe_id() 0
+static inline unsigned int vpe_shift(void)
+{
+ return 0;
+}
+#endif
+
+static inline unsigned int
+counters_total_to_per_cpu(unsigned int counters)
+{
+ return counters >> vpe_shift();
+}
+
+static inline unsigned int
+counters_per_cpu_to_total(unsigned int counters)
+{
+ return counters << vpe_shift();
+}
+
+#define __define_perf_accessors(r, n, np) \
+ \
+static inline unsigned int r_c0_ ## r ## n(void) \
+{ \
+ unsigned int cpu = vpe_id(); \
+ \
+ switch (cpu) { \
+ case 0: \
+ return read_c0_ ## r ## n(); \
+ case 1: \
+ return read_c0_ ## r ## np(); \
+ default: \
+ BUG(); \
+ } \
+ return 0; \
+} \
+ \
+static inline void w_c0_ ## r ## n(unsigned int value) \
+{ \
+ unsigned int cpu = vpe_id(); \
+ \
+ switch (cpu) { \
+ case 0: \
+ write_c0_ ## r ## n(value); \
+ return; \
+ case 1: \
+ write_c0_ ## r ## np(value); \
+ return; \
+ default: \
+ BUG(); \
+ } \
+ return; \
+} \
+
+__define_perf_accessors(perfcntr, 0, 2)
+__define_perf_accessors(perfcntr, 1, 3)
+__define_perf_accessors(perfcntr, 2, 0)
+__define_perf_accessors(perfcntr, 3, 1)
+
+__define_perf_accessors(perfctrl, 0, 2)
+__define_perf_accessors(perfctrl, 1, 3)
+__define_perf_accessors(perfctrl, 2, 0)
+__define_perf_accessors(perfctrl, 3, 1)
+
+static inline int __n_counters(void)
+{
+ if (!(read_c0_config1() & M_CONFIG1_PC))
+ return 0;
+ if (!(read_c0_perfctrl0() & M_PERFCTL_MORE))
+ return 1;
+ if (!(read_c0_perfctrl1() & M_PERFCTL_MORE))
+ return 2;
+ if (!(read_c0_perfctrl2() & M_PERFCTL_MORE))
+ return 3;
+
+ return 4;
+}
+
+static inline int n_counters(void)
+{
+ int counters;
+
+ switch (current_cpu_type()) {
+ case CPU_R10000:
+ counters = 2;
+ break;
+
+ case CPU_R12000:
+ case CPU_R14000:
+ counters = 4;
+ break;
+
+ default:
+ counters = __n_counters();
+ }
+
+ return counters;
+}
+
+/* rm9000 */
+#define RM9K_COUNTER1_EVENT(event) ((event) << 0)
+#define RM9K_COUNTER1_SUPERVISOR (1ULL << 7)
+#define RM9K_COUNTER1_KERNEL (1ULL << 8)
+#define RM9K_COUNTER1_USER (1ULL << 9)
+#define RM9K_COUNTER1_ENABLE (1ULL << 10)
+#define RM9K_COUNTER1_OVERFLOW (1ULL << 15)
+
+#define RM9K_COUNTER2_EVENT(event) ((event) << 16)
+#define RM9K_COUNTER2_SUPERVISOR (1ULL << 23)
+#define RM9K_COUNTER2_KERNEL (1ULL << 24)
+#define RM9K_COUNTER2_USER (1ULL << 25)
+#define RM9K_COUNTER2_ENABLE (1ULL << 26)
+#define RM9K_COUNTER2_OVERFLOW (1ULL << 31)
+
+extern unsigned int rm9000_perfcount_irq;
+
+/* loongson2 */
+#define LOONGSON2_CPU_TYPE "mips/loongson2"
+
+#define LOONGSON2_PERFCNT_OVERFLOW (1ULL << 31)
+
+#define LOONGSON2_PERFCTRL_EXL (1UL << 0)
+#define LOONGSON2_PERFCTRL_KERNEL (1UL << 1)
+#define LOONGSON2_PERFCTRL_SUPERVISOR (1UL << 2)
+#define LOONGSON2_PERFCTRL_USER (1UL << 3)
+#define LOONGSON2_PERFCTRL_ENABLE (1UL << 4)
+#define LOONGSON2_PERFCTRL_EVENT(idx, event) \
+ (((event) & 0x0f) << ((idx) ? 9 : 5))
+
+#define read_c0_perfctrl() __read_64bit_c0_register($24, 0)
+#define write_c0_perfctrl(val) __write_64bit_c0_register($24, 0, val)
+#define read_c0_perfcnt() __read_64bit_c0_register($25, 0)
+#define write_c0_perfcnt(val) __write_64bit_c0_register($25, 0, val)
+
+#endif /* __MIPS_PMU_H__ */
diff --git a/arch/mips/oprofile/op_model_loongson2.c b/arch/mips/oprofile/op_model_loongson2.c
index 60d3ea6..665e994 100644
--- a/arch/mips/oprofile/op_model_loongson2.c
+++ b/arch/mips/oprofile/op_model_loongson2.c
@@ -12,27 +12,11 @@
#include <linux/init.h>
#include <linux/oprofile.h>
#include <linux/interrupt.h>
+#include <asm/pmu.h>
#include <loongson.h> /* LOONGSON2_PERFCNT_IRQ */
#include "op_impl.h"
-#define LOONGSON2_CPU_TYPE "mips/loongson2"
-
-#define LOONGSON2_PERFCNT_OVERFLOW (1ULL << 31)
-
-#define LOONGSON2_PERFCTRL_EXL (1UL << 0)
-#define LOONGSON2_PERFCTRL_KERNEL (1UL << 1)
-#define LOONGSON2_PERFCTRL_SUPERVISOR (1UL << 2)
-#define LOONGSON2_PERFCTRL_USER (1UL << 3)
-#define LOONGSON2_PERFCTRL_ENABLE (1UL << 4)
-#define LOONGSON2_PERFCTRL_EVENT(idx, event) \
- (((event) & 0x0f) << ((idx) ? 9 : 5))
-
-#define read_c0_perfctrl() __read_64bit_c0_register($24, 0)
-#define write_c0_perfctrl(val) __write_64bit_c0_register($24, 0, val)
-#define read_c0_perfcnt() __read_64bit_c0_register($25, 0)
-#define write_c0_perfcnt(val) __write_64bit_c0_register($25, 0, val)
-
static struct loongson2_register_config {
unsigned int ctrl;
unsigned long long reset_counter1;
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index 54759f1..38d8a3f 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -11,116 +11,10 @@
#include <linux/interrupt.h>
#include <linux/smp.h>
#include <asm/irq_regs.h>
+#include <asm/pmu.h>
#include "op_impl.h"
-#define M_PERFCTL_EXL (1UL << 0)
-#define M_PERFCTL_KERNEL (1UL << 1)
-#define M_PERFCTL_SUPERVISOR (1UL << 2)
-#define M_PERFCTL_USER (1UL << 3)
-#define M_PERFCTL_INTERRUPT_ENABLE (1UL << 4)
-#define M_PERFCTL_EVENT(event) (((event) & 0x3ff) << 5)
-#define M_PERFCTL_VPEID(vpe) ((vpe) << 16)
-#define M_PERFCTL_MT_EN(filter) ((filter) << 20)
-#define M_TC_EN_ALL M_PERFCTL_MT_EN(0)
-#define M_TC_EN_VPE M_PERFCTL_MT_EN(1)
-#define M_TC_EN_TC M_PERFCTL_MT_EN(2)
-#define M_PERFCTL_TCID(tcid) ((tcid) << 22)
-#define M_PERFCTL_WIDE (1UL << 30)
-#define M_PERFCTL_MORE (1UL << 31)
-
-#define M_COUNTER_OVERFLOW (1UL << 31)
-
-static int (*save_perf_irq)(void);
-
-#ifdef CONFIG_MIPS_MT_SMP
-static int cpu_has_mipsmt_pertccounters;
-#define WHAT (M_TC_EN_VPE | \
- M_PERFCTL_VPEID(cpu_data[smp_processor_id()].vpe_id))
-#define vpe_id() (cpu_has_mipsmt_pertccounters ? \
- 0 : cpu_data[smp_processor_id()].vpe_id)
-
-/*
- * The number of bits to shift to convert between counters per core and
- * counters per VPE. There is no reasonable interface atm to obtain the
- * number of VPEs used by Linux and in the 34K this number is fixed to two
- * anyways so we hardcore a few things here for the moment. The way it's
- * done here will ensure that oprofile VSMP kernel will run right on a lesser
- * core like a 24K also or with maxcpus=1.
- */
-static inline unsigned int vpe_shift(void)
-{
- if (num_possible_cpus() > 1)
- return 1;
-
- return 0;
-}
-
-#else
-
-#define WHAT 0
-#define vpe_id() 0
-
-static inline unsigned int vpe_shift(void)
-{
- return 0;
-}
-
-#endif
-
-static inline unsigned int counters_total_to_per_cpu(unsigned int counters)
-{
- return counters >> vpe_shift();
-}
-
-static inline unsigned int counters_per_cpu_to_total(unsigned int counters)
-{
- return counters << vpe_shift();
-}
-
-#define __define_perf_accessors(r, n, np) \
- \
-static inline unsigned int r_c0_ ## r ## n(void) \
-{ \
- unsigned int cpu = vpe_id(); \
- \
- switch (cpu) { \
- case 0: \
- return read_c0_ ## r ## n(); \
- case 1: \
- return read_c0_ ## r ## np(); \
- default: \
- BUG(); \
- } \
- return 0; \
-} \
- \
-static inline void w_c0_ ## r ## n(unsigned int value) \
-{ \
- unsigned int cpu = vpe_id(); \
- \
- switch (cpu) { \
- case 0: \
- write_c0_ ## r ## n(value); \
- return; \
- case 1: \
- write_c0_ ## r ## np(value); \
- return; \
- default: \
- BUG(); \
- } \
- return; \
-} \
-
-__define_perf_accessors(perfcntr, 0, 2)
-__define_perf_accessors(perfcntr, 1, 3)
-__define_perf_accessors(perfcntr, 2, 0)
-__define_perf_accessors(perfcntr, 3, 1)
-
-__define_perf_accessors(perfctrl, 0, 2)
-__define_perf_accessors(perfctrl, 1, 3)
-__define_perf_accessors(perfctrl, 2, 0)
-__define_perf_accessors(perfctrl, 3, 1)
struct op_mips_model op_model_mipsxx_ops;
@@ -242,43 +136,6 @@ static int mipsxx_perfcount_handler(void)
return handled;
}
-#define M_CONFIG1_PC (1 << 4)
-
-static inline int __n_counters(void)
-{
- if (!(read_c0_config1() & M_CONFIG1_PC))
- return 0;
- if (!(read_c0_perfctrl0() & M_PERFCTL_MORE))
- return 1;
- if (!(read_c0_perfctrl1() & M_PERFCTL_MORE))
- return 2;
- if (!(read_c0_perfctrl2() & M_PERFCTL_MORE))
- return 3;
-
- return 4;
-}
-
-static inline int n_counters(void)
-{
- int counters;
-
- switch (current_cpu_type()) {
- case CPU_R10000:
- counters = 2;
- break;
-
- case CPU_R12000:
- case CPU_R14000:
- counters = 4;
- break;
-
- default:
- counters = __n_counters();
- }
-
- return counters;
-}
-
static void reset_counters(void *arg)
{
int counters = (int)(long)arg;
@@ -298,6 +155,8 @@ static void reset_counters(void *arg)
}
}
+static int (*save_perf_irq)(void);
+
static int __init mipsxx_init(void)
{
int counters;
diff --git a/arch/mips/oprofile/op_model_rm9000.c b/arch/mips/oprofile/op_model_rm9000.c
index 3aa8138..48e7487 100644
--- a/arch/mips/oprofile/op_model_rm9000.c
+++ b/arch/mips/oprofile/op_model_rm9000.c
@@ -9,24 +9,10 @@
#include <linux/oprofile.h>
#include <linux/interrupt.h>
#include <linux/smp.h>
+#include <asm/pmu.h>
#include "op_impl.h"
-#define RM9K_COUNTER1_EVENT(event) ((event) << 0)
-#define RM9K_COUNTER1_SUPERVISOR (1ULL << 7)
-#define RM9K_COUNTER1_KERNEL (1ULL << 8)
-#define RM9K_COUNTER1_USER (1ULL << 9)
-#define RM9K_COUNTER1_ENABLE (1ULL << 10)
-#define RM9K_COUNTER1_OVERFLOW (1ULL << 15)
-
-#define RM9K_COUNTER2_EVENT(event) ((event) << 16)
-#define RM9K_COUNTER2_SUPERVISOR (1ULL << 23)
-#define RM9K_COUNTER2_KERNEL (1ULL << 24)
-#define RM9K_COUNTER2_USER (1ULL << 25)
-#define RM9K_COUNTER2_ENABLE (1ULL << 26)
-#define RM9K_COUNTER2_OVERFLOW (1ULL << 31)
-
-extern unsigned int rm9000_perfcount_irq;
static struct rm9k_register_config {
unsigned int control;
--
1.6.3.3
