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Diffstat (limited to 'drivers/bus/arm-cci.c')
-rw-r--r--drivers/bus/arm-cci.c905
1 files changed, 736 insertions, 169 deletions
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 5340604b2..577cc4bf6 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -52,12 +52,15 @@ static const struct of_device_id arm_cci_matches[] = {
#ifdef CONFIG_ARM_CCI400_COMMON
{.compatible = "arm,cci-400", .data = CCI400_PORTS_DATA },
#endif
+#ifdef CONFIG_ARM_CCI500_PMU
+ { .compatible = "arm,cci-500", },
+#endif
{},
};
-#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
@@ -77,20 +80,21 @@ static const struct of_device_id arm_cci_matches[] = {
#define CCI_PMU_OVRFLW_FLAG 1
-#define CCI_PMU_CNTR_BASE(idx) ((idx) * SZ_4K)
-
-#define CCI_PMU_CNTR_MASK ((1ULL << 32) -1)
+#define CCI_PMU_CNTR_SIZE(model) ((model)->cntr_size)
+#define CCI_PMU_CNTR_BASE(model, idx) ((idx) * CCI_PMU_CNTR_SIZE(model))
+#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_EVENTS 5 /* CCI PMU has 4 counters + 1 cycle counter */
+#define CCI_PMU_MAX_HW_CNTRS(model) \
+ ((model)->num_hw_cntrs + (model)->fixed_hw_cntrs)
/* Types of interfaces that can generate events */
enum {
CCI_IF_SLAVE,
CCI_IF_MASTER,
+#ifdef CONFIG_ARM_CCI500_PMU
+ CCI_IF_GLOBAL,
+#endif
CCI_IF_MAX,
};
@@ -100,14 +104,30 @@ struct event_range {
};
struct cci_pmu_hw_events {
- struct perf_event *events[CCI_PMU_MAX_HW_EVENTS];
- unsigned long used_mask[BITS_TO_LONGS(CCI_PMU_MAX_HW_EVENTS)];
+ struct perf_event **events;
+ unsigned long *used_mask;
raw_spinlock_t pmu_lock;
};
+struct cci_pmu;
+/*
+ * struct cci_pmu_model:
+ * @fixed_hw_cntrs - Number of fixed event counters
+ * @num_hw_cntrs - Maximum number of programmable event counters
+ * @cntr_size - Size of an event counter mapping
+ */
struct cci_pmu_model {
char *name;
+ u32 fixed_hw_cntrs;
+ u32 num_hw_cntrs;
+ u32 cntr_size;
+ u64 nformat_attrs;
+ u64 nevent_attrs;
+ struct dev_ext_attribute *format_attrs;
+ struct dev_ext_attribute *event_attrs;
struct event_range event_ranges[CCI_IF_MAX];
+ int (*validate_hw_event)(struct cci_pmu *, unsigned long);
+ int (*get_event_idx)(struct cci_pmu *, struct cci_pmu_hw_events *, unsigned long);
};
static struct cci_pmu_model cci_pmu_models[];
@@ -116,33 +136,59 @@ struct cci_pmu {
void __iomem *base;
struct pmu pmu;
int nr_irqs;
- int irqs[CCI_PMU_MAX_HW_EVENTS];
+ int *irqs;
unsigned long active_irqs;
const struct cci_pmu_model *model;
struct cci_pmu_hw_events hw_events;
struct platform_device *plat_device;
- int num_events;
+ int num_cntrs;
atomic_t active_events;
struct mutex reserve_mutex;
+ struct notifier_block cpu_nb;
cpumask_t cpus;
};
-static struct cci_pmu *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
+#ifdef CONFIG_ARM_CCI500_PMU
+ CCI500_R0,
+#endif
+ CCI_MODEL_MAX
+};
+
+static ssize_t cci_pmu_format_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+static ssize_t cci_pmu_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+#define CCI_EXT_ATTR_ENTRY(_name, _func, _config) \
+ { __ATTR(_name, S_IRUGO, _func, NULL), (void *)_config }
+
+#define CCI_FORMAT_EXT_ATTR_ENTRY(_name, _config) \
+ CCI_EXT_ATTR_ENTRY(_name, cci_pmu_format_show, (char *)_config)
+#define CCI_EVENT_EXT_ATTR_ENTRY(_name, _config) \
+ CCI_EXT_ATTR_ENTRY(_name, cci_pmu_event_show, (unsigned long)_config)
+
+/* 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
@@ -150,12 +196,11 @@ static struct cci_pmu *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 CCI_PMU_CNTR_LAST(cci_pmu) (CCI_PMU_CYCLE_CNTR_IDX + cci_pmu->num_events - 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
@@ -169,37 +214,173 @@ 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 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
+
+#define CCI400_CYCLE_EVENT_EXT_ATTR_ENTRY(_name, _config) \
+ CCI_EXT_ATTR_ENTRY(_name, cci400_pmu_cycle_event_show, \
+ (unsigned long)_config)
+
+static ssize_t cci400_pmu_cycle_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static struct dev_ext_attribute cci400_pmu_format_attrs[] = {
+ CCI_FORMAT_EXT_ATTR_ENTRY(event, "config:0-4"),
+ CCI_FORMAT_EXT_ATTR_ENTRY(source, "config:5-7"),
+};
+
+static struct dev_ext_attribute cci400_r0_pmu_event_attrs[] = {
+ /* Slave events */
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_any, 0x0),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_device, 0x01),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_normal_or_nonshareable, 0x2),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_inner_or_outershareable, 0x3),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_cache_maintenance, 0x4),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_mem_barrier, 0x5),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_sync_barrier, 0x6),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_dvm_msg, 0x7),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_dvm_msg_sync, 0x8),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_stall_tt_full, 0x9),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_r_data_last_hs_snoop, 0xA),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_r_data_stall_rvalids_h_rready_l, 0xB),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_any, 0xC),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_device, 0xD),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_normal_or_nonshareable, 0xE),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_inner_or_outershare_wback_wclean, 0xF),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_write_unique, 0x10),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_write_line_unique, 0x11),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_evict, 0x12),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_stall_tt_full, 0x13),
+ /* Master events */
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_retry_speculative_fetch, 0x14),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_addr_hazard, 0x15),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_id_hazard, 0x16),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_tt_full, 0x17),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_barrier_hazard, 0x18),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall_barrier_hazard, 0x19),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall_tt_full, 0x1A),
+ /* Special event for cycles counter */
+ CCI400_CYCLE_EVENT_EXT_ATTR_ENTRY(cycles, 0xff),
+};
+
+static struct dev_ext_attribute cci400_r1_pmu_event_attrs[] = {
+ /* Slave events */
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_any, 0x0),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_device, 0x01),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_normal_or_nonshareable, 0x2),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_inner_or_outershareable, 0x3),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_cache_maintenance, 0x4),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_mem_barrier, 0x5),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_sync_barrier, 0x6),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_dvm_msg, 0x7),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_dvm_msg_sync, 0x8),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_stall_tt_full, 0x9),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_r_data_last_hs_snoop, 0xA),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_r_data_stall_rvalids_h_rready_l, 0xB),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_any, 0xC),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_device, 0xD),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_normal_or_nonshareable, 0xE),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_inner_or_outershare_wback_wclean, 0xF),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_write_unique, 0x10),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_write_line_unique, 0x11),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_evict, 0x12),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_stall_tt_full, 0x13),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_stall_slave_id_hazard, 0x14),
+ /* Master events */
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_retry_speculative_fetch, 0x0),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_stall_cycle_addr_hazard, 0x1),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_master_id_hazard, 0x2),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_hi_prio_rtq_full, 0x3),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_barrier_hazard, 0x4),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall_barrier_hazard, 0x5),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall_wtq_full, 0x6),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_low_prio_rtq_full, 0x7),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_mid_prio_rtq_full, 0x8),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_qvn_vn0, 0x9),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_qvn_vn1, 0xA),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_qvn_vn2, 0xB),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall_qvn_vn3, 0xC),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall_qvn_vn0, 0xD),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall_qvn_vn1, 0xE),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall_qvn_vn2, 0xF),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall_qvn_vn3, 0x10),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_unique_or_line_unique_addr_hazard, 0x11),
+ /* Special event for cycles counter */
+ CCI400_CYCLE_EVENT_EXT_ATTR_ENTRY(cycles, 0xff),
+};
-#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
+static ssize_t cci400_pmu_cycle_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *eattr = container_of(attr,
+ struct dev_ext_attribute, attr);
+ return snprintf(buf, PAGE_SIZE, "config=0x%lx\n", (unsigned long)eattr->var);
+}
-static int pmu_validate_hw_event(unsigned long hw_event)
+static int cci400_get_event_idx(struct cci_pmu *cci_pmu,
+ struct cci_pmu_hw_events *hw,
+ unsigned long cci_event)
{
- u8 ev_source = CCI_PMU_EVENT_SOURCE(hw_event);
- u8 ev_code = CCI_PMU_EVENT_CODE(hw_event);
+ int idx;
+
+ /* cycles event idx is fixed */
+ if (cci_event == CCI400_PMU_CYCLES) {
+ if (test_and_set_bit(CCI400_PMU_CYCLE_CNTR_IDX, hw->used_mask))
+ return -EAGAIN;
+
+ return CCI400_PMU_CYCLE_CNTR_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;
+
+ /* No counters available */
+ return -EAGAIN;
+}
+
+static int cci400_validate_hw_event(struct cci_pmu *cci_pmu, unsigned long 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 == 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;
@@ -207,87 +388,291 @@ static int pmu_validate_hw_event(unsigned long hw_event)
return -ENOENT;
}
- if (ev_code >= pmu->model->event_ranges[if_type].min &&
- ev_code <= pmu->model->event_ranges[if_type].max)
+ if (ev_code >= cci_pmu->model->event_ranges[if_type].min &&
+ ev_code <= cci_pmu->model->event_ranges[if_type].max)
return hw_event;
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 */
+
+#ifdef CONFIG_ARM_CCI500_PMU
+
+/*
+ * CCI500 provides 8 independent event counters that can count
+ * any of the events available.
+ *
+ * CCI500 PMU event id is an 9-bit value made of two parts.
+ * bits [8:5] - Source for the event
+ * 0x0-0x6 - Slave interfaces
+ * 0x8-0xD - Master interfaces
+ * 0xf - Global Events
+ * 0x7,0xe - Reserved
+ *
+ * bits [4:0] - Event code (specific to type of interface)
+ */
+
+/* Port ids */
+#define CCI500_PORT_S0 0x0
+#define CCI500_PORT_S1 0x1
+#define CCI500_PORT_S2 0x2
+#define CCI500_PORT_S3 0x3
+#define CCI500_PORT_S4 0x4
+#define CCI500_PORT_S5 0x5
+#define CCI500_PORT_S6 0x6
+
+#define CCI500_PORT_M0 0x8
+#define CCI500_PORT_M1 0x9
+#define CCI500_PORT_M2 0xa
+#define CCI500_PORT_M3 0xb
+#define CCI500_PORT_M4 0xc
+#define CCI500_PORT_M5 0xd
+
+#define CCI500_PORT_GLOBAL 0xf
+
+#define CCI500_PMU_EVENT_MASK 0x1ffUL
+#define CCI500_PMU_EVENT_SOURCE_SHIFT 0x5
+#define CCI500_PMU_EVENT_SOURCE_MASK 0xf
+#define CCI500_PMU_EVENT_CODE_SHIFT 0x0
+#define CCI500_PMU_EVENT_CODE_MASK 0x1f
+
+#define CCI500_PMU_EVENT_SOURCE(event) \
+ ((event >> CCI500_PMU_EVENT_SOURCE_SHIFT) & CCI500_PMU_EVENT_SOURCE_MASK)
+#define CCI500_PMU_EVENT_CODE(event) \
+ ((event >> CCI500_PMU_EVENT_CODE_SHIFT) & CCI500_PMU_EVENT_CODE_MASK)
+
+#define CCI500_SLAVE_PORT_MIN_EV 0x00
+#define CCI500_SLAVE_PORT_MAX_EV 0x1f
+#define CCI500_MASTER_PORT_MIN_EV 0x00
+#define CCI500_MASTER_PORT_MAX_EV 0x06
+#define CCI500_GLOBAL_PORT_MIN_EV 0x00
+#define CCI500_GLOBAL_PORT_MAX_EV 0x0f
+
+
+#define CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(_name, _config) \
+ CCI_EXT_ATTR_ENTRY(_name, cci500_pmu_global_event_show, \
+ (unsigned long) _config)
+
+static ssize_t cci500_pmu_global_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+static struct dev_ext_attribute cci500_pmu_format_attrs[] = {
+ CCI_FORMAT_EXT_ATTR_ENTRY(event, "config:0-4"),
+ CCI_FORMAT_EXT_ATTR_ENTRY(source, "config:5-8"),
+};
+
+static struct dev_ext_attribute cci500_pmu_event_attrs[] = {
+ /* Slave events */
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_arvalid, 0x0),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_dev, 0x1),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_nonshareable, 0x2),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_shareable_non_alloc, 0x3),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_shareable_alloc, 0x4),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_invalidate, 0x5),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_cache_maint, 0x6),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_dvm_msg, 0x7),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_rval, 0x8),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_hs_rlast_snoop, 0x9),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_hs_awalid, 0xA),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_dev, 0xB),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_non_shareable, 0xC),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_share_wb, 0xD),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_share_wlu, 0xE),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_share_wunique, 0xF),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_evict, 0x10),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_wrevict, 0x11),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_w_data_beat, 0x12),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_srq_acvalid, 0x13),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_srq_read, 0x14),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_srq_clean, 0x15),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_srq_data_transfer_low, 0x16),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rrq_stall_arvalid, 0x17),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_r_data_stall, 0x18),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_wrq_stall, 0x19),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_w_data_stall, 0x1A),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_w_resp_stall, 0x1B),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_srq_stall, 0x1C),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_s_data_stall, 0x1D),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_rq_stall_ot_limit, 0x1E),
+ CCI_EVENT_EXT_ATTR_ENTRY(si_r_stall_arbit, 0x1F),
+
+ /* Master events */
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_r_data_beat_any, 0x0),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_w_data_beat_any, 0x1),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_rrq_stall, 0x2),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_r_data_stall, 0x3),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_wrq_stall, 0x4),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_w_data_stall, 0x5),
+ CCI_EVENT_EXT_ATTR_ENTRY(mi_w_resp_stall, 0x6),
+
+ /* Global events */
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_access_filter_bank_0_1, 0x0),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_access_filter_bank_2_3, 0x1),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_access_filter_bank_4_5, 0x2),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_access_filter_bank_6_7, 0x3),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_access_miss_filter_bank_0_1, 0x4),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_access_miss_filter_bank_2_3, 0x5),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_access_miss_filter_bank_4_5, 0x6),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_access_miss_filter_bank_6_7, 0x7),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_back_invalidation, 0x8),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_stall_alloc_busy, 0x9),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_stall_tt_full, 0xA),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_wrq, 0xB),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_cd_hs, 0xC),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_rq_stall_addr_hazard, 0xD),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snopp_rq_stall_tt_full, 0xE),
+ CCI500_GLOBAL_EVENT_EXT_ATTR_ENTRY(cci_snoop_rq_tzmp1_prot, 0xF),
+};
+
+static ssize_t cci500_pmu_global_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *eattr = container_of(attr,
+ struct dev_ext_attribute, attr);
+ /* Global events have single fixed source code */
+ return snprintf(buf, PAGE_SIZE, "event=0x%lx,source=0x%x\n",
+ (unsigned long)eattr->var, CCI500_PORT_GLOBAL);
+}
+
+static int cci500_validate_hw_event(struct cci_pmu *cci_pmu,
+ unsigned long hw_event)
+{
+ u32 ev_source = CCI500_PMU_EVENT_SOURCE(hw_event);
+ u32 ev_code = CCI500_PMU_EVENT_CODE(hw_event);
+ int if_type;
+
+ if (hw_event & ~CCI500_PMU_EVENT_MASK)
+ return -ENOENT;
+
+ switch (ev_source) {
+ case CCI500_PORT_S0:
+ case CCI500_PORT_S1:
+ case CCI500_PORT_S2:
+ case CCI500_PORT_S3:
+ case CCI500_PORT_S4:
+ case CCI500_PORT_S5:
+ case CCI500_PORT_S6:
+ if_type = CCI_IF_SLAVE;
+ break;
+ case CCI500_PORT_M0:
+ case CCI500_PORT_M1:
+ case CCI500_PORT_M2:
+ case CCI500_PORT_M3:
+ case CCI500_PORT_M4:
+ case CCI500_PORT_M5:
+ if_type = CCI_IF_MASTER;
+ break;
+ case CCI500_PORT_GLOBAL:
+ if_type = CCI_IF_GLOBAL;
+ break;
+ default:
+ return -ENOENT;
+ }
+
+ if (ev_code >= cci_pmu->model->event_ranges[if_type].min &&
+ ev_code <= cci_pmu->model->event_ranges[if_type].max)
+ return hw_event;
+
+ return -ENOENT;
+}
+#endif /* CONFIG_ARM_CCI500_PMU */
+
+static ssize_t cci_pmu_format_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *eattr = container_of(attr,
+ struct dev_ext_attribute, attr);
+ return snprintf(buf, PAGE_SIZE, "%s\n", (char *)eattr->var);
+}
+
+static ssize_t cci_pmu_event_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct dev_ext_attribute *eattr = container_of(attr,
+ struct dev_ext_attribute, attr);
+ /* source parameter is mandatory for normal PMU events */
+ return snprintf(buf, PAGE_SIZE, "source=?,event=0x%lx\n",
+ (unsigned long)eattr->var);
+}
static int pmu_is_valid_counter(struct cci_pmu *cci_pmu, int idx)
{
- return CCI_PMU_CYCLE_CNTR_IDX <= idx &&
- idx <= CCI_PMU_CNTR_LAST(cci_pmu);
+ return 0 <= idx && idx <= CCI_PMU_CNTR_LAST(cci_pmu);
}
-static u32 pmu_read_register(int idx, unsigned int offset)
+static u32 pmu_read_register(struct cci_pmu *cci_pmu, int idx, unsigned int offset)
{
- return readl_relaxed(pmu->base + CCI_PMU_CNTR_BASE(idx) + offset);
+ return readl_relaxed(cci_pmu->base +
+ CCI_PMU_CNTR_BASE(cci_pmu->model, idx) + offset);
}
-static void pmu_write_register(u32 value, int idx, unsigned int offset)
+static void pmu_write_register(struct cci_pmu *cci_pmu, u32 value,
+ int idx, unsigned int offset)
{
- return writel_relaxed(value, pmu->base + CCI_PMU_CNTR_BASE(idx) + offset);
+ return writel_relaxed(value, cci_pmu->base +
+ CCI_PMU_CNTR_BASE(cci_pmu->model, idx) + offset);
}
-static void pmu_disable_counter(int idx)
+static void pmu_disable_counter(struct cci_pmu *cci_pmu, int idx)
{
- pmu_write_register(0, idx, CCI_PMU_CNTR_CTRL);
+ pmu_write_register(cci_pmu, 0, idx, CCI_PMU_CNTR_CTRL);
}
-static void pmu_enable_counter(int idx)
+static void pmu_enable_counter(struct cci_pmu *cci_pmu, int idx)
{
- pmu_write_register(1, idx, CCI_PMU_CNTR_CTRL);
+ pmu_write_register(cci_pmu, 1, idx, CCI_PMU_CNTR_CTRL);
}
-static void pmu_set_event(int idx, unsigned long event)
+static void pmu_set_event(struct cci_pmu *cci_pmu, int idx, unsigned long event)
{
- pmu_write_register(event, idx, CCI_PMU_EVT_SEL);
+ pmu_write_register(cci_pmu, event, idx, CCI_PMU_EVT_SEL);
}
+/*
+ * Returns the number of programmable counters actually implemented
+ * by the cci
+ */
static u32 pmu_get_max_counters(void)
{
- u32 n_cnts = (readl_relaxed(cci_ctrl_base + CCI_PMCR) &
- CCI_PMCR_NCNT_MASK) >> CCI_PMCR_NCNT_SHIFT;
-
- /* add 1 for cycle counter */
- return n_cnts + 1;
+ return (readl_relaxed(cci_ctrl_base + CCI_PMCR) &
+ CCI_PMCR_NCNT_MASK) >> CCI_PMCR_NCNT_SHIFT;
}
static int pmu_get_event_idx(struct cci_pmu_hw_events *hw, struct perf_event *event)
{
struct cci_pmu *cci_pmu = to_cci_pmu(event->pmu);
- struct hw_perf_event *hw_event = &event->hw;
- unsigned long cci_event = hw_event->config_base;
+ unsigned long cci_event = event->hw.config_base;
int idx;
- if (cci_event == CCI_PMU_CYCLES) {
- if (test_and_set_bit(CCI_PMU_CYCLE_CNTR_IDX, hw->used_mask))
- return -EAGAIN;
+ if (cci_pmu->model->get_event_idx)
+ return cci_pmu->model->get_event_idx(cci_pmu, hw, cci_event);
- return CCI_PMU_CYCLE_CNTR_IDX;
- }
-
- for (idx = CCI_PMU_CNTR0_IDX; idx <= CCI_PMU_CNTR_LAST(cci_pmu); ++idx)
+ /* Generic code to find an unused idx from the mask */
+ for(idx = 0; idx <= CCI_PMU_CNTR_LAST(cci_pmu); idx++)
if (!test_and_set_bit(idx, hw->used_mask))
return idx;
@@ -297,18 +682,13 @@ static int pmu_get_event_idx(struct cci_pmu_hw_events *hw, struct perf_event *ev
static int pmu_map_event(struct perf_event *event)
{
- int mapping;
- unsigned long config = event->attr.config;
+ struct cci_pmu *cci_pmu = to_cci_pmu(event->pmu);
- if (event->attr.type < PERF_TYPE_MAX)
+ if (event->attr.type < PERF_TYPE_MAX ||
+ !cci_pmu->model->validate_hw_event)
return -ENOENT;
- if (config == CCI_PMU_CYCLES)
- mapping = config;
- else
- mapping = pmu_validate_hw_event(config);
-
- return mapping;
+ return cci_pmu->model->validate_hw_event(cci_pmu, event->attr.config);
}
static int pmu_request_irq(struct cci_pmu *cci_pmu, irq_handler_t handler)
@@ -319,7 +699,7 @@ static int pmu_request_irq(struct cci_pmu *cci_pmu, irq_handler_t handler)
if (unlikely(!pmu_device))
return -ENODEV;
- if (pmu->nr_irqs < 1) {
+ if (cci_pmu->nr_irqs < 1) {
dev_err(&pmu_device->dev, "no irqs for CCI PMUs defined\n");
return -ENODEV;
}
@@ -331,16 +711,16 @@ static int pmu_request_irq(struct cci_pmu *cci_pmu, irq_handler_t handler)
*
* This should allow handling of non-unique interrupt for the counters.
*/
- for (i = 0; i < pmu->nr_irqs; i++) {
- int err = request_irq(pmu->irqs[i], handler, IRQF_SHARED,
+ for (i = 0; i < cci_pmu->nr_irqs; i++) {
+ int err = request_irq(cci_pmu->irqs[i], handler, IRQF_SHARED,
"arm-cci-pmu", cci_pmu);
if (err) {
dev_err(&pmu_device->dev, "unable to request IRQ%d for ARM CCI PMU counters\n",
- pmu->irqs[i]);
+ cci_pmu->irqs[i]);
return err;
}
- set_bit(i, &pmu->active_irqs);
+ set_bit(i, &cci_pmu->active_irqs);
}
return 0;
@@ -350,11 +730,11 @@ static void pmu_free_irq(struct cci_pmu *cci_pmu)
{
int i;
- for (i = 0; i < pmu->nr_irqs; i++) {
- if (!test_and_clear_bit(i, &pmu->active_irqs))
+ for (i = 0; i < cci_pmu->nr_irqs; i++) {
+ if (!test_and_clear_bit(i, &cci_pmu->active_irqs))
continue;
- free_irq(pmu->irqs[i], cci_pmu);
+ free_irq(cci_pmu->irqs[i], cci_pmu);
}
}
@@ -369,7 +749,7 @@ static u32 pmu_read_counter(struct perf_event *event)
dev_err(&cci_pmu->plat_device->dev, "Invalid CCI PMU counter %d\n", idx);
return 0;
}
- value = pmu_read_register(idx, CCI_PMU_CNTR);
+ value = pmu_read_register(cci_pmu, idx, CCI_PMU_CNTR);
return value;
}
@@ -383,7 +763,7 @@ static void pmu_write_counter(struct perf_event *event, u32 value)
if (unlikely(!pmu_is_valid_counter(cci_pmu, idx)))
dev_err(&cci_pmu->plat_device->dev, "Invalid CCI PMU counter %d\n", idx);
else
- pmu_write_register(value, idx, CCI_PMU_CNTR);
+ pmu_write_register(cci_pmu, value, idx, CCI_PMU_CNTR);
}
static u64 pmu_event_update(struct perf_event *event)
@@ -427,7 +807,7 @@ static irqreturn_t pmu_handle_irq(int irq_num, void *dev)
{
unsigned long flags;
struct cci_pmu *cci_pmu = dev;
- struct cci_pmu_hw_events *events = &pmu->hw_events;
+ struct cci_pmu_hw_events *events = &cci_pmu->hw_events;
int idx, handled = IRQ_NONE;
raw_spin_lock_irqsave(&events->pmu_lock, flags);
@@ -436,7 +816,7 @@ static irqreturn_t pmu_handle_irq(int irq_num, void *dev)
* This should work regardless of whether we have per-counter overflow
* interrupt or a combined overflow interrupt.
*/
- for (idx = CCI_PMU_CYCLE_CNTR_IDX; idx <= CCI_PMU_CNTR_LAST(cci_pmu); idx++) {
+ for (idx = 0; idx <= CCI_PMU_CNTR_LAST(cci_pmu); idx++) {
struct perf_event *event = events->events[idx];
struct hw_perf_event *hw_counter;
@@ -446,11 +826,12 @@ static irqreturn_t pmu_handle_irq(int irq_num, void *dev)
hw_counter = &event->hw;
/* Did this counter overflow? */
- if (!(pmu_read_register(idx, CCI_PMU_OVRFLW) &
+ if (!(pmu_read_register(cci_pmu, idx, CCI_PMU_OVRFLW) &
CCI_PMU_OVRFLW_FLAG))
continue;
- pmu_write_register(CCI_PMU_OVRFLW_FLAG, idx, CCI_PMU_OVRFLW);
+ pmu_write_register(cci_pmu, CCI_PMU_OVRFLW_FLAG, idx,
+ CCI_PMU_OVRFLW);
pmu_event_update(event);
pmu_event_set_period(event);
@@ -492,7 +873,7 @@ static void cci_pmu_enable(struct pmu *pmu)
{
struct cci_pmu *cci_pmu = to_cci_pmu(pmu);
struct cci_pmu_hw_events *hw_events = &cci_pmu->hw_events;
- int enabled = bitmap_weight(hw_events->used_mask, cci_pmu->num_events);
+ int enabled = bitmap_weight(hw_events->used_mask, cci_pmu->num_cntrs);
unsigned long flags;
u32 val;
@@ -523,6 +904,16 @@ static void cci_pmu_disable(struct pmu *pmu)
raw_spin_unlock_irqrestore(&hw_events->pmu_lock, flags);
}
+/*
+ * Check if the idx represents a non-programmable counter.
+ * All the fixed event counters are mapped before the programmable
+ * counters.
+ */
+static bool pmu_fixed_hw_idx(struct cci_pmu *cci_pmu, int idx)
+{
+ return (idx >= 0) && (idx < cci_pmu->model->fixed_hw_cntrs);
+}
+
static void cci_pmu_start(struct perf_event *event, int pmu_flags)
{
struct cci_pmu *cci_pmu = to_cci_pmu(event->pmu);
@@ -547,12 +938,12 @@ static void cci_pmu_start(struct perf_event *event, int pmu_flags)
raw_spin_lock_irqsave(&hw_events->pmu_lock, flags);
- /* Configure the event to count, unless you are counting cycles */
- if (idx != CCI_PMU_CYCLE_CNTR_IDX)
- pmu_set_event(idx, hwc->config_base);
+ /* Configure the counter unless you are counting a fixed event */
+ if (!pmu_fixed_hw_idx(cci_pmu, idx))
+ pmu_set_event(cci_pmu, idx, hwc->config_base);
pmu_event_set_period(event);
- pmu_enable_counter(idx);
+ pmu_enable_counter(cci_pmu, idx);
raw_spin_unlock_irqrestore(&hw_events->pmu_lock, flags);
}
@@ -575,7 +966,7 @@ static void cci_pmu_stop(struct perf_event *event, int pmu_flags)
* We always reprogram the counter, so ignore PERF_EF_UPDATE. See
* cci_pmu_start()
*/
- pmu_disable_counter(idx);
+ pmu_disable_counter(cci_pmu, idx);
pmu_event_update(event);
hwc->state |= PERF_HES_STOPPED | PERF_HES_UPTODATE;
}
@@ -655,13 +1046,16 @@ static int
validate_group(struct perf_event *event)
{
struct perf_event *sibling, *leader = event->group_leader;
+ struct cci_pmu *cci_pmu = to_cci_pmu(event->pmu);
+ unsigned long mask[BITS_TO_LONGS(cci_pmu->num_cntrs)];
struct cci_pmu_hw_events fake_pmu = {
/*
* Initialise the fake PMU. We only need to populate the
* used_mask for the purposes of validation.
*/
- .used_mask = { 0 },
+ .used_mask = mask,
};
+ memset(mask, 0, BITS_TO_LONGS(cci_pmu->num_cntrs) * sizeof(unsigned long));
if (!validate_event(event->pmu, &fake_pmu, leader))
return -EINVAL;
@@ -779,20 +1173,27 @@ static int cci_pmu_event_init(struct perf_event *event)
return err;
}
-static ssize_t pmu_attr_cpumask_show(struct device *dev,
+static ssize_t pmu_cpumask_attr_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
+ struct dev_ext_attribute *eattr = container_of(attr,
+ struct dev_ext_attribute, attr);
+ struct cci_pmu *cci_pmu = eattr->var;
+
int n = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
- cpumask_pr_args(&pmu->cpus));
+ cpumask_pr_args(&cci_pmu->cpus));
buf[n++] = '\n';
buf[n] = '\0';
return n;
}
-static DEVICE_ATTR(cpumask, S_IRUGO, pmu_attr_cpumask_show, NULL);
+static struct dev_ext_attribute pmu_cpumask_attr = {
+ __ATTR(cpumask, S_IRUGO, pmu_cpumask_attr_show, NULL),
+ NULL, /* Populated in cci_pmu_init */
+};
static struct attribute *pmu_attrs[] = {
- &dev_attr_cpumask.attr,
+ &pmu_cpumask_attr.attr.attr,
NULL,
};
@@ -800,14 +1201,78 @@ static struct attribute_group pmu_attr_group = {
.attrs = pmu_attrs,
};
+static struct attribute_group pmu_format_attr_group = {
+ .name = "format",
+ .attrs = NULL, /* Filled in cci_pmu_init_attrs */
+};
+
+static struct attribute_group pmu_event_attr_group = {
+ .name = "events",
+ .attrs = NULL, /* Filled in cci_pmu_init_attrs */
+};
+
static const struct attribute_group *pmu_attr_groups[] = {
&pmu_attr_group,
+ &pmu_format_attr_group,
+ &pmu_event_attr_group,
NULL
};
+static struct attribute **alloc_attrs(struct platform_device *pdev,
+ int n, struct dev_ext_attribute *source)
+{
+ int i;
+ struct attribute **attrs;
+
+ /* Alloc n + 1 (for terminating NULL) */
+ attrs = devm_kcalloc(&pdev->dev, n + 1, sizeof(struct attribute *),
+ GFP_KERNEL);
+ if (!attrs)
+ return attrs;
+ for(i = 0; i < n; i++)
+ attrs[i] = &source[i].attr.attr;
+ return attrs;
+}
+
+static int cci_pmu_init_attrs(struct cci_pmu *cci_pmu, struct platform_device *pdev)
+{
+ const struct cci_pmu_model *model = cci_pmu->model;
+ struct attribute **attrs;
+
+ /*
+ * All allocations below are managed, hence doesn't need to be
+ * free'd explicitly in case of an error.
+ */
+
+ if (model->nevent_attrs) {
+ attrs = alloc_attrs(pdev, model->nevent_attrs,
+ model->event_attrs);
+ if (!attrs)
+ return -ENOMEM;
+ pmu_event_attr_group.attrs = attrs;
+ }
+ if (model->nformat_attrs) {
+ attrs = alloc_attrs(pdev, model->nformat_attrs,
+ model->format_attrs);
+ if (!attrs)
+ return -ENOMEM;
+ pmu_format_attr_group.attrs = attrs;
+ }
+ pmu_cpumask_attr.var = cci_pmu;
+
+ return 0;
+}
+
static int cci_pmu_init(struct cci_pmu *cci_pmu, struct platform_device *pdev)
{
char *name = cci_pmu->model->name;
+ u32 num_cntrs;
+ int rc;
+
+ rc = cci_pmu_init_attrs(cci_pmu, pdev);
+ if (rc)
+ return rc;
+
cci_pmu->pmu = (struct pmu) {
.name = cci_pmu->model->name,
.task_ctx_nr = perf_invalid_context,
@@ -823,7 +1288,15 @@ static int cci_pmu_init(struct cci_pmu *cci_pmu, struct platform_device *pdev)
};
cci_pmu->plat_device = pdev;
- cci_pmu->num_events = pmu_get_max_counters();
+ num_cntrs = pmu_get_max_counters();
+ if (num_cntrs > cci_pmu->model->num_hw_cntrs) {
+ dev_warn(&pdev->dev,
+ "PMU implements more counters(%d) than supported by"
+ " the model(%d), truncated.",
+ num_cntrs, cci_pmu->model->num_hw_cntrs);
+ num_cntrs = cci_pmu->model->num_hw_cntrs;
+ }
+ cci_pmu->num_cntrs = num_cntrs + cci_pmu->model->fixed_hw_cntrs;
return perf_pmu_register(&cci_pmu->pmu, name, -1);
}
@@ -831,12 +1304,14 @@ static int cci_pmu_init(struct cci_pmu *cci_pmu, struct platform_device *pdev)
static int cci_pmu_cpu_notifier(struct notifier_block *self,
unsigned long action, void *hcpu)
{
+ struct cci_pmu *cci_pmu = container_of(self,
+ struct cci_pmu, cpu_nb);
unsigned int cpu = (long)hcpu;
unsigned int target;
switch (action & ~CPU_TASKS_FROZEN) {
case CPU_DOWN_PREPARE:
- if (!cpumask_test_and_clear_cpu(cpu, &pmu->cpus))
+ if (!cpumask_test_and_clear_cpu(cpu, &cci_pmu->cpus))
break;
target = cpumask_any_but(cpu_online_mask, cpu);
if (target < 0) // UP, last CPU
@@ -845,7 +1320,7 @@ static int cci_pmu_cpu_notifier(struct notifier_block *self,
* TODO: migrate context once core races on event->ctx have
* been fixed.
*/
- cpumask_set_cpu(target, &pmu->cpus);
+ cpumask_set_cpu(target, &cci_pmu->cpus);
default:
break;
}
@@ -853,57 +1328,103 @@ static int cci_pmu_cpu_notifier(struct notifier_block *self,
return NOTIFY_OK;
}
-static struct notifier_block cci_pmu_cpu_nb = {
- .notifier_call = cci_pmu_cpu_notifier,
- /*
- * to migrate uncore events, our notifier should be executed
- * before perf core's notifier.
- */
- .priority = CPU_PRI_PERF + 1,
-};
-
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,
+ .format_attrs = cci400_pmu_format_attrs,
+ .nformat_attrs = ARRAY_SIZE(cci400_pmu_format_attrs),
+ .event_attrs = cci400_r0_pmu_event_attrs,
+ .nevent_attrs = ARRAY_SIZE(cci400_r0_pmu_event_attrs),
.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,
+ .format_attrs = cci400_pmu_format_attrs,
+ .nformat_attrs = ARRAY_SIZE(cci400_pmu_format_attrs),
+ .event_attrs = cci400_r1_pmu_event_attrs,
+ .nevent_attrs = ARRAY_SIZE(cci400_r1_pmu_event_attrs),
.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
+#ifdef CONFIG_ARM_CCI500_PMU
+ [CCI500_R0] = {
+ .name = "CCI_500",
+ .fixed_hw_cntrs = 0,
+ .num_hw_cntrs = 8,
+ .cntr_size = SZ_64K,
+ .format_attrs = cci500_pmu_format_attrs,
+ .nformat_attrs = ARRAY_SIZE(cci500_pmu_format_attrs),
+ .event_attrs = cci500_pmu_event_attrs,
+ .nevent_attrs = ARRAY_SIZE(cci500_pmu_event_attrs),
+ .event_ranges = {
+ [CCI_IF_SLAVE] = {
+ CCI500_SLAVE_PORT_MIN_EV,
+ CCI500_SLAVE_PORT_MAX_EV,
+ },
+ [CCI_IF_MASTER] = {
+ CCI500_MASTER_PORT_MIN_EV,
+ CCI500_MASTER_PORT_MAX_EV,
+ },
+ [CCI_IF_GLOBAL] = {
+ CCI500_GLOBAL_PORT_MIN_EV,
+ CCI500_GLOBAL_PORT_MAX_EV,
+ },
+ },
+ .validate_hw_event = cci500_validate_hw_event,
+ },
+#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
+#ifdef CONFIG_ARM_CCI500_PMU
+ {
+ .compatible = "arm,cci-500-pmu,r0",
+ .data = &cci_pmu_models[CCI500_R0],
},
+#endif
{},
};
@@ -932,68 +1453,114 @@ static bool is_duplicate_irq(int irq, int *irqs, int nr_irqs)
return false;
}
-static int cci_pmu_probe(struct platform_device *pdev)
+static struct cci_pmu *cci_pmu_alloc(struct platform_device *pdev)
{
- struct resource *res;
- int i, ret, irq;
+ struct cci_pmu *cci_pmu;
const struct cci_pmu_model *model;
+ /*
+ * All allocations are devm_* hence we don't have to free
+ * them explicitly on an error, as it would end up in driver
+ * detach.
+ */
model = get_cci_model(pdev);
if (!model) {
dev_warn(&pdev->dev, "CCI PMU version not supported\n");
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
}
- pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL);
- if (!pmu)
- return -ENOMEM;
+ cci_pmu = devm_kzalloc(&pdev->dev, sizeof(*cci_pmu), GFP_KERNEL);
+ if (!cci_pmu)
+ return ERR_PTR(-ENOMEM);
+
+ cci_pmu->model = model;
+ cci_pmu->irqs = devm_kcalloc(&pdev->dev, CCI_PMU_MAX_HW_CNTRS(model),
+ sizeof(*cci_pmu->irqs), GFP_KERNEL);
+ if (!cci_pmu->irqs)
+ return ERR_PTR(-ENOMEM);
+ cci_pmu->hw_events.events = devm_kcalloc(&pdev->dev,
+ CCI_PMU_MAX_HW_CNTRS(model),
+ sizeof(*cci_pmu->hw_events.events),
+ GFP_KERNEL);
+ if (!cci_pmu->hw_events.events)
+ return ERR_PTR(-ENOMEM);
+ cci_pmu->hw_events.used_mask = devm_kcalloc(&pdev->dev,
+ BITS_TO_LONGS(CCI_PMU_MAX_HW_CNTRS(model)),
+ sizeof(*cci_pmu->hw_events.used_mask),
+ GFP_KERNEL);
+ if (!cci_pmu->hw_events.used_mask)
+ return ERR_PTR(-ENOMEM);
+
+ return cci_pmu;
+}
+
+
+static int cci_pmu_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct cci_pmu *cci_pmu;
+ int i, ret, irq;
+
+ cci_pmu = cci_pmu_alloc(pdev);
+ if (IS_ERR(cci_pmu))
+ return PTR_ERR(cci_pmu);
- pmu->model = model;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- pmu->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(pmu->base))
+ cci_pmu->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(cci_pmu->base))
return -ENOMEM;
/*
- * CCI PMU has 5 overflow signals - one per counter; but some may be tied
+ * CCI PMU has one overflow interrupt per counter; but some may be tied
* together to a common interrupt.
*/
- pmu->nr_irqs = 0;
- for (i = 0; i < CCI_PMU_MAX_HW_EVENTS; i++) {
+ cci_pmu->nr_irqs = 0;
+ for (i = 0; i < CCI_PMU_MAX_HW_CNTRS(cci_pmu->model); i++) {
irq = platform_get_irq(pdev, i);
if (irq < 0)
break;
- if (is_duplicate_irq(irq, pmu->irqs, pmu->nr_irqs))
+ if (is_duplicate_irq(irq, cci_pmu->irqs, cci_pmu->nr_irqs))
continue;
- pmu->irqs[pmu->nr_irqs++] = irq;
+ cci_pmu->irqs[cci_pmu->nr_irqs++] = irq;
}
/*
* Ensure that the device tree has as many interrupts as the number
* of counters.
*/
- if (i < CCI_PMU_MAX_HW_EVENTS) {
+ if (i < CCI_PMU_MAX_HW_CNTRS(cci_pmu->model)) {
dev_warn(&pdev->dev, "In-correct number of interrupts: %d, should be %d\n",
- i, CCI_PMU_MAX_HW_EVENTS);
+ i, CCI_PMU_MAX_HW_CNTRS(cci_pmu->model));
return -EINVAL;
}
- raw_spin_lock_init(&pmu->hw_events.pmu_lock);
- mutex_init(&pmu->reserve_mutex);
- atomic_set(&pmu->active_events, 0);
- cpumask_set_cpu(smp_processor_id(), &pmu->cpus);
+ raw_spin_lock_init(&cci_pmu->hw_events.pmu_lock);
+ mutex_init(&cci_pmu->reserve_mutex);
+ atomic_set(&cci_pmu->active_events, 0);
+ cpumask_set_cpu(smp_processor_id(), &cci_pmu->cpus);
+
+ cci_pmu->cpu_nb = (struct notifier_block) {
+ .notifier_call = cci_pmu_cpu_notifier,
+ /*
+ * to migrate uncore events, our notifier should be executed
+ * before perf core's notifier.
+ */
+ .priority = CPU_PRI_PERF + 1,
+ };
- ret = register_cpu_notifier(&cci_pmu_cpu_nb);
+ ret = register_cpu_notifier(&cci_pmu->cpu_nb);
if (ret)
return ret;
- ret = cci_pmu_init(pmu, pdev);
- if (ret)
+ ret = cci_pmu_init(cci_pmu, pdev);
+ if (ret) {
+ unregister_cpu_notifier(&cci_pmu->cpu_nb);
return ret;
+ }
- pr_info("ARM %s PMU driver probed", pmu->model->name);
+ pr_info("ARM %s PMU driver probed", cci_pmu->model->name);
return 0;
}
@@ -1032,14 +1599,14 @@ 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
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-05 19:22:15 +0000