linux-kernel - [PATCH 2/3] perf/dwc_pcie: Load DesignWare PCIe PMU driver automatically on Ampere SoCs

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Message-ID: <20241008231824.5102-3-ilkka@os.amperecomputing.com>
Date: Tue,  8 Oct 2024 23:18:23 +0000
From: Ilkka Koskinen <ilkka@...amperecomputing.com>
To: Shuai Xue <xueshuai@...ux.alibaba.com>,
	Jing Zhang <renyu.zj@...ux.alibaba.com>,
	Will Deacon <will@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Ilkka Koskinen <ilkka@...amperecomputing.com>
Subject: [PATCH 2/3] perf/dwc_pcie: Load DesignWare PCIe PMU driver automatically on Ampere SoCs

Load DesignWare PCIe PMU driver automatically if the system has a PCI
bridge by Ampere.

Signed-off-by: Ilkka Koskinen <ilkka@...amperecomputing.com>
---
 drivers/perf/dwc_pcie_pmu.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/perf/dwc_pcie_pmu.c b/drivers/perf/dwc_pcie_pmu.c
index 3581d916d851..d752168733cf 100644
--- a/drivers/perf/dwc_pcie_pmu.c
+++ b/drivers/perf/dwc_pcie_pmu.c
@@ -782,6 +782,16 @@ static void __exit dwc_pcie_pmu_exit(void)
 module_init(dwc_pcie_pmu_init);
 module_exit(dwc_pcie_pmu_exit);
 
+static const struct pci_device_id dwc_pcie_pmu_table[] = {
+	{
+		PCI_DEVICE(PCI_VENDOR_ID_AMPERE, PCI_ANY_ID),
+		.class		= PCI_CLASS_BRIDGE_PCI_NORMAL,
+		.class_mask	= ~0,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(pci, dwc_pcie_pmu_table);
+
 MODULE_DESCRIPTION("PMU driver for DesignWare Cores PCI Express Controller");
 MODULE_AUTHOR("Shuai Xue <xueshuai@...ux.alibaba.com>");
 MODULE_LICENSE("GPL v2");
-- 
2.46.2