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Date: Tue, 26 May 2015 10:53:14 +0100
From: "Suzuki K. Poulose" <suzuki.poulose@....com>
To: arm@...nel.org
Cc: will.deacon@....com, punit.agrawal@....com, mark.rutland@....com,
linux-arm-kernel@...ts.infradead.org, arnd@...db.de,
olof@...om.net, pawel.moll@....com, linux-kernel@...r.kernel.org,
"Suzuki K. Poulose" <suzuki.poulose@....com>
Subject: [PATCH 5/7] arm-cci: Sanitise CCI400 PMU driver specific code
From: "Suzuki K. Poulose" <suzuki.poulose@....com>
Rename CCI400 specific defintions from CCI_xxx to CCI400_xxx.
Introduce generic ARM_CCI_PMU to cover common code for handling
the CCI PMU.
Cc: Mark Rutland <mark.rutland@....com>
Cc: Will Deacon <will.deacon@....com>
Cc: Punit Agrawal <punit.agrawal@....com>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@....com>
Acked-by: Punit Agrawal <punit.agrawal@....com>
---
drivers/bus/Kconfig | 5 ++
drivers/bus/arm-cci.c | 157 +++++++++++++++++++++++++++++--------------------
2 files changed, 97 insertions(+), 65 deletions(-)
diff --git a/drivers/bus/Kconfig b/drivers/bus/Kconfig
index a6b37d4..a857936 100644
--- a/drivers/bus/Kconfig
+++ b/drivers/bus/Kconfig
@@ -7,6 +7,10 @@ menu "Bus devices"
config ARM_CCI
bool
+config ARM_CCI_PMU
+ bool
+ select ARM_CCI
+
config ARM_CCI400_COMMON
bool
select ARM_CCI
@@ -16,6 +20,7 @@ config ARM_CCI400_PMU
depends on (ARM && CPU_V7) || ARM64
depends on PERF_EVENTS
select ARM_CCI400_COMMON
+ select ARM_CCI_PMU
help
Support for PMU events monitoring on the ARM CCI-400 (cache coherent
interconnect). CCI-400 supports counting events related to the
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 9b71c57..df1c2c6 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -55,9 +55,9 @@ static const struct of_device_id arm_cci_matches[] = {
{},
};
-#ifdef CONFIG_ARM_CCI400_PMU
+#ifdef CONFIG_ARM_CCI_PMU
-#define DRIVER_NAME "CCI-400"
+#define DRIVER_NAME "ARM-CCI"
#define DRIVER_NAME_PMU DRIVER_NAME " PMU"
#define CCI_PMCR 0x0100
@@ -82,10 +82,6 @@ static const struct of_device_id arm_cci_matches[] = {
#define CCI_PMU_CNTR_MASK ((1ULL << 32) -1)
#define CCI_PMU_CNTR_LAST(cci_pmu) (cci_pmu->num_cntrs - 1)
-#define CCI_PMU_EVENT_MASK 0xffUL
-#define CCI_PMU_EVENT_SOURCE(event) ((event >> 5) & 0x7)
-#define CCI_PMU_EVENT_CODE(event) (event & 0x1f)
-
#define CCI_PMU_MAX_HW_CNTRS(model) \
((model)->num_hw_cntrs + (model)->fixed_hw_cntrs)
@@ -144,19 +140,29 @@ struct cci_pmu {
#define to_cci_pmu(c) (container_of(c, struct cci_pmu, pmu))
+enum cci_models {
+#ifdef CONFIG_ARM_CCI400_PMU
+ CCI400_R0,
+ CCI400_R1,
+#endif
+ CCI_MODEL_MAX
+};
+
+/* CCI400 PMU Specific definitions */
+
+#ifdef CONFIG_ARM_CCI400_PMU
+
/* Port ids */
-#define CCI_PORT_S0 0
-#define CCI_PORT_S1 1
-#define CCI_PORT_S2 2
-#define CCI_PORT_S3 3
-#define CCI_PORT_S4 4
-#define CCI_PORT_M0 5
-#define CCI_PORT_M1 6
-#define CCI_PORT_M2 7
-
-#define CCI_REV_R0 0
-#define CCI_REV_R1 1
-#define CCI_REV_R1_PX 5
+#define CCI400_PORT_S0 0
+#define CCI400_PORT_S1 1
+#define CCI400_PORT_S2 2
+#define CCI400_PORT_S3 3
+#define CCI400_PORT_S4 4
+#define CCI400_PORT_M0 5
+#define CCI400_PORT_M1 6
+#define CCI400_PORT_M2 7
+
+#define CCI400_R1_PX 5
/*
* Instead of an event id to monitor CCI cycles, a dedicated counter is
@@ -164,11 +170,11 @@ struct cci_pmu {
* make use of this event in hardware.
*/
enum cci400_perf_events {
- CCI_PMU_CYCLES = 0xff
+ CCI400_PMU_CYCLES = 0xff
};
-#define CCI_PMU_CYCLE_CNTR_IDX 0
-#define CCI_PMU_CNTR0_IDX 1
+#define CCI400_PMU_CYCLE_CNTR_IDX 0
+#define CCI400_PMU_CNTR0_IDX 1
/*
* CCI PMU event id is an 8-bit value made of two parts - bits 7:5 for one of 8
@@ -182,15 +188,26 @@ enum cci400_perf_events {
* the different revisions and are used to validate the event to be monitored.
*/
-#define CCI_REV_R0_SLAVE_PORT_MIN_EV 0x00
-#define CCI_REV_R0_SLAVE_PORT_MAX_EV 0x13
-#define CCI_REV_R0_MASTER_PORT_MIN_EV 0x14
-#define CCI_REV_R0_MASTER_PORT_MAX_EV 0x1a
-
-#define CCI_REV_R1_SLAVE_PORT_MIN_EV 0x00
-#define CCI_REV_R1_SLAVE_PORT_MAX_EV 0x14
-#define CCI_REV_R1_MASTER_PORT_MIN_EV 0x00
-#define CCI_REV_R1_MASTER_PORT_MAX_EV 0x11
+#define CCI400_PMU_EVENT_MASK 0xffUL
+#define CCI400_PMU_EVENT_SOURCE_SHIFT 5
+#define CCI400_PMU_EVENT_SOURCE_MASK 0x7
+#define CCI400_PMU_EVENT_CODE_SHIFT 0
+#define CCI400_PMU_EVENT_CODE_MASK 0x1f
+#define CCI400_PMU_EVENT_SOURCE(event) \
+ ((event >> CCI400_PMU_EVENT_SOURCE_SHIFT) & \
+ CCI400_PMU_EVENT_SOURCE_MASK)
+#define CCI400_PMU_EVENT_CODE(event) \
+ ((event >> CCI400_PMU_EVENT_CODE_SHIFT) & CCI400_PMU_EVENT_CODE_MASK)
+
+#define CCI400_R0_SLAVE_PORT_MIN_EV 0x00
+#define CCI400_R0_SLAVE_PORT_MAX_EV 0x13
+#define CCI400_R0_MASTER_PORT_MIN_EV 0x14
+#define CCI400_R0_MASTER_PORT_MAX_EV 0x1a
+
+#define CCI400_R1_SLAVE_PORT_MIN_EV 0x00
+#define CCI400_R1_SLAVE_PORT_MAX_EV 0x14
+#define CCI400_R1_MASTER_PORT_MIN_EV 0x00
+#define CCI400_R1_MASTER_PORT_MAX_EV 0x11
static int cci400_get_event_idx(struct cci_pmu *cci_pmu,
struct cci_pmu_hw_events *hw,
@@ -199,14 +216,14 @@ static int cci400_get_event_idx(struct cci_pmu *cci_pmu,
int idx;
/* cycles event idx is fixed */
- if (cci_event == CCI_PMU_CYCLES) {
- if (test_and_set_bit(CCI_PMU_CYCLE_CNTR_IDX, hw->used_mask))
+ if (cci_event == CCI400_PMU_CYCLES) {
+ if (test_and_set_bit(CCI400_PMU_CYCLE_CNTR_IDX, hw->used_mask))
return -EAGAIN;
- return CCI_PMU_CYCLE_CNTR_IDX;
+ return CCI400_PMU_CYCLE_CNTR_IDX;
}
- for (idx = CCI_PMU_CNTR0_IDX; idx <= CCI_PMU_CNTR_LAST(cci_pmu); ++idx)
+ for (idx = CCI400_PMU_CNTR0_IDX; idx <= CCI_PMU_CNTR_LAST(cci_pmu); ++idx)
if (!test_and_set_bit(idx, hw->used_mask))
return idx;
@@ -216,28 +233,28 @@ static int cci400_get_event_idx(struct cci_pmu *cci_pmu,
static int cci400_validate_hw_event(struct cci_pmu *cci_pmu, unsigned long hw_event)
{
- u8 ev_source = CCI_PMU_EVENT_SOURCE(hw_event);
- u8 ev_code = CCI_PMU_EVENT_CODE(hw_event);
+ u8 ev_source = CCI400_PMU_EVENT_SOURCE(hw_event);
+ u8 ev_code = CCI400_PMU_EVENT_CODE(hw_event);
int if_type;
- if (hw_event & ~CCI_PMU_EVENT_MASK)
+ if (hw_event & ~CCI400_PMU_EVENT_MASK)
return -ENOENT;
- if (hw_event == CCI_PMU_CYCLES)
+ if (hw_event == CCI400_PMU_CYCLES)
return hw_event;
switch (ev_source) {
- case CCI_PORT_S0:
- case CCI_PORT_S1:
- case CCI_PORT_S2:
- case CCI_PORT_S3:
- case CCI_PORT_S4:
+ case CCI400_PORT_S0:
+ case CCI400_PORT_S1:
+ case CCI400_PORT_S2:
+ case CCI400_PORT_S3:
+ case CCI400_PORT_S4:
/* Slave Interface */
if_type = CCI_IF_SLAVE;
break;
- case CCI_PORT_M0:
- case CCI_PORT_M1:
- case CCI_PORT_M2:
+ case CCI400_PORT_M0:
+ case CCI400_PORT_M1:
+ case CCI400_PORT_M2:
/* Master Interface */
if_type = CCI_IF_MASTER;
break;
@@ -252,24 +269,30 @@ static int cci400_validate_hw_event(struct cci_pmu *cci_pmu, unsigned long hw_ev
return -ENOENT;
}
-static int probe_cci_revision(void)
+static int probe_cci400_revision(void)
{
int rev;
rev = readl_relaxed(cci_ctrl_base + CCI_PID2) & CCI_PID2_REV_MASK;
rev >>= CCI_PID2_REV_SHIFT;
- if (rev < CCI_REV_R1_PX)
- return CCI_REV_R0;
+ if (rev < CCI400_R1_PX)
+ return CCI400_R0;
else
- return CCI_REV_R1;
+ return CCI400_R1;
}
static const struct cci_pmu_model *probe_cci_model(struct platform_device *pdev)
{
if (platform_has_secure_cci_access())
- return &cci_pmu_models[probe_cci_revision()];
+ return &cci_pmu_models[probe_cci400_revision()];
+ return NULL;
+}
+#else /* !CONFIG_ARM_CCI400_PMU */
+static inline struct cci_pmu_model *probe_cci_model(struct platform_device *pdev)
+{
return NULL;
}
+#endif /* CONFIG_ARM_CCI400_PMU */
static int pmu_is_valid_counter(struct cci_pmu *cci_pmu, int idx)
{
@@ -920,57 +943,61 @@ static int cci_pmu_cpu_notifier(struct notifier_block *self,
}
static struct cci_pmu_model cci_pmu_models[] = {
- [CCI_REV_R0] = {
+#ifdef CONFIG_ARM_CCI400_PMU
+ [CCI400_R0] = {
.name = "CCI_400",
.fixed_hw_cntrs = 1, /* Cycle counter */
.num_hw_cntrs = 4,
.cntr_size = SZ_4K,
.event_ranges = {
[CCI_IF_SLAVE] = {
- CCI_REV_R0_SLAVE_PORT_MIN_EV,
- CCI_REV_R0_SLAVE_PORT_MAX_EV,
+ CCI400_R0_SLAVE_PORT_MIN_EV,
+ CCI400_R0_SLAVE_PORT_MAX_EV,
},
[CCI_IF_MASTER] = {
- CCI_REV_R0_MASTER_PORT_MIN_EV,
- CCI_REV_R0_MASTER_PORT_MAX_EV,
+ CCI400_R0_MASTER_PORT_MIN_EV,
+ CCI400_R0_MASTER_PORT_MAX_EV,
},
},
.validate_hw_event = cci400_validate_hw_event,
.get_event_idx = cci400_get_event_idx,
},
- [CCI_REV_R1] = {
+ [CCI400_R1] = {
.name = "CCI_400_r1",
.fixed_hw_cntrs = 1, /* Cycle counter */
.num_hw_cntrs = 4,
.cntr_size = SZ_4K,
.event_ranges = {
[CCI_IF_SLAVE] = {
- CCI_REV_R1_SLAVE_PORT_MIN_EV,
- CCI_REV_R1_SLAVE_PORT_MAX_EV,
+ CCI400_R1_SLAVE_PORT_MIN_EV,
+ CCI400_R1_SLAVE_PORT_MAX_EV,
},
[CCI_IF_MASTER] = {
- CCI_REV_R1_MASTER_PORT_MIN_EV,
- CCI_REV_R1_MASTER_PORT_MAX_EV,
+ CCI400_R1_MASTER_PORT_MIN_EV,
+ CCI400_R1_MASTER_PORT_MAX_EV,
},
},
.validate_hw_event = cci400_validate_hw_event,
.get_event_idx = cci400_get_event_idx,
},
+#endif
};
static const struct of_device_id arm_cci_pmu_matches[] = {
+#ifdef CONFIG_ARM_CCI400_PMU
{
.compatible = "arm,cci-400-pmu",
.data = NULL,
},
{
.compatible = "arm,cci-400-pmu,r0",
- .data = &cci_pmu_models[CCI_REV_R0],
+ .data = &cci_pmu_models[CCI400_R0],
},
{
.compatible = "arm,cci-400-pmu,r1",
- .data = &cci_pmu_models[CCI_REV_R1],
+ .data = &cci_pmu_models[CCI400_R1],
},
+#endif
{},
};
@@ -1145,14 +1172,14 @@ static int __init cci_platform_init(void)
return platform_driver_register(&cci_platform_driver);
}
-#else /* !CONFIG_ARM_CCI400_PMU */
+#else /* !CONFIG_ARM_CCI_PMU */
static int __init cci_platform_init(void)
{
return 0;
}
-#endif /* CONFIG_ARM_CCI400_PMU */
+#endif /* CONFIG_ARM_CCI_PMU */
#ifdef CONFIG_ARM_CCI400_PORT_CTRL
--
1.7.9.5
--
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