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Commit f4d58938 authored by Suzuki K. Poulose's avatar Suzuki K. Poulose Committed by Arnd Bergmann
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arm-cci: Sanitise CCI400 PMU driver specific code 

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@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: default avatarSuzuki K. Poulose <suzuki.poulose@arm.com>
Acked-by: default avatarPunit Agrawal <punit.agrawal@arm.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 31216290
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Showing with 97 additions and 65 deletions
drivers/bus/Kconfig
View file @ f4d58938
......@@ -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
......
drivers/bus/arm-cci.c
View file @ f4d58938
......@@ -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
......
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