[PATCH v7 01/19] ARM64: Move PMU register related defines to asm/pmu.h

Shannon Zhao
2015-12-15T08:49:21Z

From: Shannon Zhao <shannon.zhao@linaro.org>

To use the ARMv8 PMU related register defines from the KVM code,
we move the relevant definitions to asm/pmu.h header file.

Signed-off-by: Anup Patel <anup.patel@linaro.org>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
---
arch/arm64/include/asm/pmu.h | 64 ++++++++++++++++++++++++++++++++++++++++++
arch/arm64/kernel/perf_event.c | 36 +-----------------------
2 files changed, 65 insertions(+), 35 deletions(-)
create mode 100644 arch/arm64/include/asm/pmu.h

diff --git a/arch/arm64/include/asm/pmu.h b/arch/arm64/include/asm/pmu.h
new file mode 100644
index 0000000..4264ea0
--- /dev/null
+++ b/arch/arm64/include/asm/pmu.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2015 Linaro Ltd, Shannon Zhao
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __ASM_PMU_H
+#define __ASM_PMU_H
+
+#define ARMV8_MAX_COUNTERS 32
+#define ARMV8_COUNTER_MASK (ARMV8_MAX_COUNTERS - 1)
+
+/*
+ * Per-CPU PMCR: config reg
+ */
+#define ARMV8_PMCR_E (1 << 0) /* Enable all counters */
+#define ARMV8_PMCR_P (1 << 1) /* Reset all counters */
+#define ARMV8_PMCR_C (1 << 2) /* Cycle counter reset */
+#define ARMV8_PMCR_D (1 << 3) /* CCNT counts every 64th cpu cycle */
+#define ARMV8_PMCR_X (1 << 4) /* Export to ETM */
+#define ARMV8_PMCR_DP (1 << 5) /* Disable CCNT if non-invasive debug*/
+#define ARMV8_PMCR_N_SHIFT 11 /* Number of counters supported */
+#define ARMV8_PMCR_N_MASK 0x1f
+#define ARMV8_PMCR_MASK 0x3f /* Mask for writable bits */
+
+/*
+ * PMCNTEN: counters enable reg
+ */
+#define ARMV8_CNTEN_MASK 0xffffffff /* Mask for writable bits */
+
+/*
+ * PMINTEN: counters interrupt enable reg
+ */
+#define ARMV8_INTEN_MASK 0xffffffff /* Mask for writable bits */
+
+/*
+ * PMOVSR: counters overflow flag status reg
+ */
+#define ARMV8_OVSR_MASK 0xffffffff /* Mask for writable bits */
+#define ARMV8_OVERFLOWED_MASK ARMV8_OVSR_MASK
+
+/*
+ * PMXEVTYPER: Event selection reg
+ */
+#define ARMV8_EVTYPE_MASK 0xc80003ff /* Mask for writable bits */
+#define ARMV8_EVTYPE_EVENT 0x3ff /* Mask for EVENT bits */
+
+/*
+ * Event filters for PMUv3
+ */
+#define ARMV8_EXCLUDE_EL1 (1 << 31)
+#define ARMV8_EXCLUDE_EL0 (1 << 30)
+#define ARMV8_INCLUDE_EL2 (1 << 27)
+
+#endif /* __ASM_PMU_H */
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 5b1897e..7eca5dc 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -24,6 +24,7 @@
#include <linux/of.h>
#include <linux/perf/arm_pmu.h>
#include <linux/platform_device.h>
+#include <asm/pmu.h>

/*
* ARMv8 PMUv3 Performance Events handling code.
@@ -187,9 +188,6 @@ static const unsigned armv8_a57_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
#define ARMV8_IDX_COUNTER_LAST(cpu_pmu) \
(ARMV8_IDX_CYCLE_COUNTER + cpu_pmu->num_events - 1)

-#define ARMV8_MAX_COUNTERS 32
-#define ARMV8_COUNTER_MASK (ARMV8_MAX_COUNTERS - 1)
-
/*
* ARMv8 low level PMU access
*/
@@ -200,38 +198,6 @@ static const unsigned armv8_a57_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
#define ARMV8_IDX_TO_COUNTER(x) \
(((x) - ARMV8_IDX_COUNTER0) & ARMV8_COUNTER_MASK)

-/*
- * Per-CPU PMCR: config reg
- */
-#define ARMV8_PMCR_E (1 << 0) /* Enable all counters */
-#define ARMV8_PMCR_P (1 << 1) /* Reset all counters */
-#define ARMV8_PMCR_C (1 << 2) /* Cycle counter reset */
-#define ARMV8_PMCR_D (1 << 3) /* CCNT counts every 64th cpu cycle */
-#define ARMV8_PMCR_X (1 << 4) /* Export to ETM */
-#define ARMV8_PMCR_DP (1 << 5) /* Disable CCNT if non-invasive debug*/
-#define ARMV8_PMCR_N_SHIFT 11 /* Number of counters supported */
-#define ARMV8_PMCR_N_MASK 0x1f
-#define ARMV8_PMCR_MASK 0x3f /* Mask for writable bits */
-
-/*
- * PMOVSR: counters overflow flag status reg
- */
-#define ARMV8_OVSR_MASK 0xffffffff /* Mask for writable bits */
-#define ARMV8_OVERFLOWED_MASK ARMV8_OVSR_MASK
-
-/*
- * PMXEVTYPER: Event selection reg
- */
-#define ARMV8_EVTYPE_MASK 0xc80003ff /* Mask for writable bits */
-#define ARMV8_EVTYPE_EVENT 0x3ff /* Mask for EVENT bits */
-
-/*
- * Event filters for PMUv3
- */
-#define ARMV8_EXCLUDE_EL1 (1 << 31)
-#define ARMV8_EXCLUDE_EL0 (1 << 30)
-#define ARMV8_INCLUDE_EL2 (1 << 27)
-
static inline u32 armv8pmu_pmcr_read(void)
{
u32 val;
--
2.0.4