linux-kernel - [PATCH 3/9] drivers/perf: hisi: Add support for HiSilicon DDRC v3 PMU driver

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Message-ID: <20250218092000.41641-4-yangyicong@huawei.com>
Date: Tue, 18 Feb 2025 17:19:54 +0800
From: Yicong Yang <yangyicong@...wei.com>
To: <will@...nel.org>, <mark.rutland@....com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC: <jonathan.cameron@...wei.com>, <prime.zeng@...ilicon.com>,
	<linuxarm@...wei.com>, <yangyicong@...ilicon.com>, <wangyushan12@...wei.com>
Subject: [PATCH 3/9] drivers/perf: hisi: Add support for HiSilicon DDRC v3 PMU driver

From: Junhao He <hejunhao3@...wei.com>

HiSilicon DDRC v3 PMU has the different interrupt register offset
compared to the v2. Add device information of v3 PMU with ACPI
HID HISI0235.

Signed-off-by: Junhao He <hejunhao3@...wei.com>
Signed-off-by: Yicong Yang <yangyicong@...ilicon.com>
---
 drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c b/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c
index 7e3c2436e96b..26eaa6d20c00 100644
--- a/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c
@@ -43,6 +43,11 @@
 #define DDRC_V2_EVENT_TYPE	0xe74
 #define DDRC_V2_PERF_CTRL	0xeA0
 
+/* DDRC interrupt registers definition in v3 */
+#define DDRC_V3_INT_MASK	0x534
+#define DDRC_V3_INT_STATUS	0x538
+#define DDRC_V3_INT_CLEAR	0x53C
+
 /* DDRC has 8-counters */
 #define DDRC_NR_COUNTERS	0x8
 #define DDRC_V1_PERF_CTRL_EN	0x2
@@ -460,9 +465,28 @@ static const struct hisi_pmu_dev_info hisi_ddrc_v2 = {
 	.private = &hisi_ddrc_v2_pmu_regs,
 };
 
+static struct hisi_ddrc_pmu_regs hisi_ddrc_v3_pmu_regs = {
+	.event_cnt = DDRC_V2_EVENT_CNT,
+	.event_ctrl = DDRC_V2_EVENT_CTRL,
+	.event_type = DDRC_V2_EVENT_TYPE,
+	.perf_ctrl = DDRC_V2_PERF_CTRL,
+	.perf_ctrl_en = DDRC_V2_PERF_CTRL_EN,
+	.int_mask = DDRC_V3_INT_MASK,
+	.int_clear = DDRC_V3_INT_CLEAR,
+	.int_status = DDRC_V3_INT_STATUS,
+};
+
+static const struct hisi_pmu_dev_info hisi_ddrc_v3 = {
+	.counter_bits = 48,
+	.check_event = DDRC_V2_NR_EVENTS,
+	.attr_groups = hisi_ddrc_pmu_v2_attr_groups,
+	.private = &hisi_ddrc_v3_pmu_regs,
+};
+
 static const struct acpi_device_id hisi_ddrc_pmu_acpi_match[] = {
 	{ "HISI0233", (kernel_ulong_t)&hisi_ddrc_v1 },
 	{ "HISI0234", (kernel_ulong_t)&hisi_ddrc_v2 },
+	{ "HISI0235", (kernel_ulong_t)&hisi_ddrc_v3 },
 	{}
 };
 MODULE_DEVICE_TABLE(acpi, hisi_ddrc_pmu_acpi_match);
-- 
2.24.0