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-rw-r--r--drivers/bus/arm-cci.c17
-rw-r--r--drivers/perf/arm-cci.c47
2 files changed, 37 insertions, 27 deletions
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 23dc0b890d0c..443e4c3fd357 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -25,9 +25,8 @@
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>
-/* Referenced read-only by the PMU driver; see drivers/perf/arm-cci.c */
-void __iomem *cci_ctrl_base;
-static unsigned long cci_ctrl_phys;
+static void __iomem *cci_ctrl_base __ro_after_init;
+static unsigned long cci_ctrl_phys __ro_after_init;
#ifdef CONFIG_ARM_CCI400_PORT_CTRL
struct cci_nb_ports {
@@ -56,6 +55,15 @@ static const struct of_device_id arm_cci_matches[] = {
{},
};
+static const struct of_dev_auxdata arm_cci_auxdata[] = {
+ OF_DEV_AUXDATA("arm,cci-400-pmu", 0, NULL, &cci_ctrl_base),
+ OF_DEV_AUXDATA("arm,cci-400-pmu,r0", 0, NULL, &cci_ctrl_base),
+ OF_DEV_AUXDATA("arm,cci-400-pmu,r1", 0, NULL, &cci_ctrl_base),
+ OF_DEV_AUXDATA("arm,cci-500-pmu,r0", 0, NULL, &cci_ctrl_base),
+ OF_DEV_AUXDATA("arm,cci-550-pmu,r0", 0, NULL, &cci_ctrl_base),
+ {}
+};
+
#define DRIVER_NAME "ARM-CCI"
static int cci_platform_probe(struct platform_device *pdev)
@@ -63,7 +71,8 @@ static int cci_platform_probe(struct platform_device *pdev)
if (!cci_probed())
return -ENODEV;
- return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+ return of_platform_populate(pdev->dev.of_node, NULL,
+ arm_cci_auxdata, &pdev->dev);
}
static struct platform_driver cci_platform_driver = {
diff --git a/drivers/perf/arm-cci.c b/drivers/perf/arm-cci.c
index 336f1455cf96..67a74c48c7c2 100644
--- a/drivers/perf/arm-cci.c
+++ b/drivers/perf/arm-cci.c
@@ -16,8 +16,6 @@
#include <linux/slab.h>
#include <linux/spinlock.h>
-extern void __iomem *const cci_ctrl_base;
-
#define DRIVER_NAME "ARM-CCI PMU"
#define CCI_PMCR 0x0100
@@ -90,6 +88,7 @@ static struct cci_pmu_model cci_pmu_models[];
struct cci_pmu {
void __iomem *base;
+ void __iomem *ctrl_base;
struct pmu pmu;
int cpu;
int nr_irqs;
@@ -360,10 +359,10 @@ static int cci400_validate_hw_event(struct cci_pmu *cci_pmu, unsigned long hw_ev
return -ENOENT;
}
-static int probe_cci400_revision(void)
+static int probe_cci400_revision(struct cci_pmu *cci_pmu)
{
int rev;
- rev = readl_relaxed(cci_ctrl_base + CCI_PID2) & CCI_PID2_REV_MASK;
+ rev = readl_relaxed(cci_pmu->ctrl_base + CCI_PID2) & CCI_PID2_REV_MASK;
rev >>= CCI_PID2_REV_SHIFT;
if (rev < CCI400_R1_PX)
@@ -372,14 +371,14 @@ static int probe_cci400_revision(void)
return CCI400_R1;
}
-static const struct cci_pmu_model *probe_cci_model(void)
+static const struct cci_pmu_model *probe_cci_model(struct cci_pmu *cci_pmu)
{
if (platform_has_secure_cci_access())
- return &cci_pmu_models[probe_cci400_revision()];
+ return &cci_pmu_models[probe_cci400_revision(cci_pmu)];
return NULL;
}
#else /* !CONFIG_ARM_CCI400_PMU */
-static inline struct cci_pmu_model *probe_cci_model(void)
+static inline struct cci_pmu_model *probe_cci_model(struct cci_pmu *cci_pmu)
{
return NULL;
}
@@ -662,8 +661,8 @@ static void __cci_pmu_enable_nosync(struct cci_pmu *cci_pmu)
u32 val;
/* Enable all the PMU counters. */
- val = readl_relaxed(cci_ctrl_base + CCI_PMCR) | CCI_PMCR_CEN;
- writel(val, cci_ctrl_base + CCI_PMCR);
+ val = readl_relaxed(cci_pmu->ctrl_base + CCI_PMCR) | CCI_PMCR_CEN;
+ writel(val, cci_pmu->ctrl_base + CCI_PMCR);
}
/* Should be called with cci_pmu->hw_events->pmu_lock held */
@@ -674,13 +673,13 @@ static void __cci_pmu_enable_sync(struct cci_pmu *cci_pmu)
}
/* Should be called with cci_pmu->hw_events->pmu_lock held */
-static void __cci_pmu_disable(void)
+static void __cci_pmu_disable(struct cci_pmu *cci_pmu)
{
u32 val;
/* Disable all the PMU counters. */
- val = readl_relaxed(cci_ctrl_base + CCI_PMCR) & ~CCI_PMCR_CEN;
- writel(val, cci_ctrl_base + CCI_PMCR);
+ val = readl_relaxed(cci_pmu->ctrl_base + CCI_PMCR) & ~CCI_PMCR_CEN;
+ writel(val, cci_pmu->ctrl_base + CCI_PMCR);
}
static ssize_t cci_pmu_format_show(struct device *dev,
@@ -782,9 +781,9 @@ pmu_restore_counters(struct cci_pmu *cci_pmu, unsigned long *mask)
* Returns the number of programmable counters actually implemented
* by the cci
*/
-static u32 pmu_get_max_counters(void)
+static u32 pmu_get_max_counters(struct cci_pmu *cci_pmu)
{
- return (readl_relaxed(cci_ctrl_base + CCI_PMCR) &
+ return (readl_relaxed(cci_pmu->ctrl_base + CCI_PMCR) &
CCI_PMCR_NCNT_MASK) >> CCI_PMCR_NCNT_SHIFT;
}
@@ -965,7 +964,7 @@ static void cci5xx_pmu_write_counters(struct cci_pmu *cci_pmu, unsigned long *ma
pmu_set_event(cci_pmu, i, event->hw.config_base);
}
- __cci_pmu_disable();
+ __cci_pmu_disable(cci_pmu);
pmu_restore_counters(cci_pmu, saved_mask);
}
@@ -1026,7 +1025,7 @@ static irqreturn_t pmu_handle_irq(int irq_num, void *dev)
raw_spin_lock_irqsave(&events->pmu_lock, flags);
/* Disable the PMU while we walk through the counters */
- __cci_pmu_disable();
+ __cci_pmu_disable(cci_pmu);
/*
* Iterate over counters and update the corresponding perf events.
* This should work regardless of whether we have per-counter overflow
@@ -1108,7 +1107,7 @@ static void cci_pmu_disable(struct pmu *pmu)
unsigned long flags;
raw_spin_lock_irqsave(&hw_events->pmu_lock, flags);
- __cci_pmu_disable();
+ __cci_pmu_disable(cci_pmu);
raw_spin_unlock_irqrestore(&hw_events->pmu_lock, flags);
}
@@ -1438,7 +1437,7 @@ static int cci_pmu_init(struct cci_pmu *cci_pmu, struct platform_device *pdev)
};
cci_pmu->plat_device = pdev;
- num_cntrs = pmu_get_max_counters();
+ num_cntrs = pmu_get_max_counters(cci_pmu);
if (num_cntrs > cci_pmu->model->num_hw_cntrs) {
dev_warn(&pdev->dev,
"PMU implements more counters(%d) than supported by"
@@ -1611,21 +1610,23 @@ static struct cci_pmu *cci_pmu_alloc(struct device *dev)
* them explicitly on an error, as it would end up in driver
* detach.
*/
+ cci_pmu = devm_kzalloc(dev, sizeof(*cci_pmu), GFP_KERNEL);
+ if (!cci_pmu)
+ return ERR_PTR(-ENOMEM);
+
+ cci_pmu->ctrl_base = *(void __iomem **)dev->platform_data;
+
model = of_device_get_match_data(dev);
if (!model) {
dev_warn(dev,
"DEPRECATED compatible property, requires secure access to CCI registers");
- model = probe_cci_model();
+ model = probe_cci_model(cci_pmu);
}
if (!model) {
dev_warn(dev, "CCI PMU version not supported\n");
return ERR_PTR(-ENODEV);
}
- cci_pmu = devm_kzalloc(dev, sizeof(*cci_pmu), GFP_KERNEL);
- if (!cci_pmu)
- return ERR_PTR(-ENOMEM);
-
cci_pmu->model = model;
cci_pmu->irqs = devm_kcalloc(dev, CCI_PMU_MAX_HW_CNTRS(model),
sizeof(*cci_pmu->irqs), GFP_KERNEL);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-29 13:17:27 +0300