ARM: imx: mmdc perf function support i.MX6QP (c47c6fe4) · Commits · 戴 / test

arch/arm/mach-imx/mmdc.c

+32 −6

Original line number	Diff line number	Diff line
		@@ -44,6 +44,7 @@
		#define DBG_RST 0x2
		#define PRF_FRZ 0x4
		#define CYC_OVF 0x8
		#define PROFILE_SEL 0x10

		#define MMDC_MADPCR0 0x410
		#define MMDC_MADPSR0 0x418
		@@ -55,10 +56,29 @@

		#define MMDC_NUM_COUNTERS 6

		#define MMDC_FLAG_PROFILE_SEL 0x1

		#define to_mmdc_pmu(p) container_of(p, struct mmdc_pmu, pmu)

		static int ddr_type;

		struct fsl_mmdc_devtype_data {
		unsigned int flags;
		};

		static const struct fsl_mmdc_devtype_data imx6q_data = {
		};

		static const struct fsl_mmdc_devtype_data imx6qp_data = {
		.flags = MMDC_FLAG_PROFILE_SEL,
		};

		static const struct of_device_id imx_mmdc_dt_ids[] = {
		{ .compatible = "fsl,imx6q-mmdc", .data = (void *)&imx6q_data},
		{ .compatible = "fsl,imx6qp-mmdc", .data = (void *)&imx6qp_data},
		{ /* sentinel */ }
		};

		#ifdef CONFIG_PERF_EVENTS

		static DEFINE_IDA(mmdc_ida);
		@@ -83,6 +103,7 @@ struct mmdc_pmu {
		struct device *dev;
		struct perf_event *mmdc_events[MMDC_NUM_COUNTERS];
		struct hlist_node node;
		struct fsl_mmdc_devtype_data *devtype_data;
		};

		/*
		@@ -307,6 +328,7 @@ static void mmdc_pmu_event_start(struct perf_event *event, int flags)
		struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
		struct hw_perf_event *hwc = &event->hw;
		void __iomem mmdc_base, reg;
		u32 val;

		mmdc_base = pmu_mmdc->mmdc_base;
		reg = mmdc_base + MMDC_MADPCR0;
		@@ -321,7 +343,12 @@ static void mmdc_pmu_event_start(struct perf_event *event, int flags)
		local64_set(&hwc->prev_count, 0);

		writel(DBG_RST, reg);
		writel(DBG_EN, reg);

		val = DBG_EN;
		if (pmu_mmdc->devtype_data->flags & MMDC_FLAG_PROFILE_SEL)
		val \|= PROFILE_SEL;

		writel(val, reg);
		}

		static int mmdc_pmu_event_add(struct perf_event *event, int flags)
		@@ -436,6 +463,8 @@ static int imx_mmdc_perf_init(struct platform_device pdev, void __iomem mmdc_b
		char *name;
		int mmdc_num;
		int ret;
		const struct of_device_id *of_id =
		of_match_device(imx_mmdc_dt_ids, &pdev->dev);

		pmu_mmdc = kzalloc(sizeof(*pmu_mmdc), GFP_KERNEL);
		if (!pmu_mmdc) {
		@@ -450,6 +479,8 @@ static int imx_mmdc_perf_init(struct platform_device pdev, void __iomem mmdc_b
		name = devm_kasprintf(&pdev->dev,
		GFP_KERNEL, "mmdc%d", mmdc_num);

		pmu_mmdc->devtype_data = (struct fsl_mmdc_devtype_data *)of_id->data;

		hrtimer_init(&pmu_mmdc->hrtimer, CLOCK_MONOTONIC,
		HRTIMER_MODE_REL);
		pmu_mmdc->hrtimer.function = mmdc_pmu_timer_handler;
		@@ -524,11 +555,6 @@ int imx_mmdc_get_ddr_type(void)
		return ddr_type;
		}

		static const struct of_device_id imx_mmdc_dt_ids[] = {
		{ .compatible = "fsl,imx6q-mmdc", },
		{ /* sentinel */ }
		};

		static struct platform_driver imx_mmdc_driver = {
		.driver = {
		.name = "imx-mmdc",

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