v4.19.13 snapshot.
diff --git a/drivers/hwtracing/intel_th/pci.c b/drivers/hwtracing/intel_th/pci.c
new file mode 100644
index 0000000..1cf6290
--- /dev/null
+++ b/drivers/hwtracing/intel_th/pci.c
@@ -0,0 +1,184 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Intel(R) Trace Hub pci driver
+ *
+ * Copyright (C) 2014-2015 Intel Corporation.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/sysfs.h>
+#include <linux/pci.h>
+
+#include "intel_th.h"
+
+#define DRIVER_NAME "intel_th_pci"
+
+#define BAR_MASK (BIT(TH_MMIO_CONFIG) | BIT(TH_MMIO_SW))
+
+#define PCI_REG_NPKDSC 0x80
+#define NPKDSC_TSACT BIT(5)
+
+static int intel_th_pci_activate(struct intel_th *th)
+{
+ struct pci_dev *pdev = to_pci_dev(th->dev);
+ u32 npkdsc;
+ int err;
+
+ if (!INTEL_TH_CAP(th, tscu_enable))
+ return 0;
+
+ err = pci_read_config_dword(pdev, PCI_REG_NPKDSC, &npkdsc);
+ if (!err) {
+ npkdsc |= NPKDSC_TSACT;
+ err = pci_write_config_dword(pdev, PCI_REG_NPKDSC, npkdsc);
+ }
+
+ if (err)
+ dev_err(&pdev->dev, "failed to read NPKDSC register\n");
+
+ return err;
+}
+
+static void intel_th_pci_deactivate(struct intel_th *th)
+{
+ struct pci_dev *pdev = to_pci_dev(th->dev);
+ u32 npkdsc;
+ int err;
+
+ if (!INTEL_TH_CAP(th, tscu_enable))
+ return;
+
+ err = pci_read_config_dword(pdev, PCI_REG_NPKDSC, &npkdsc);
+ if (!err) {
+ npkdsc |= NPKDSC_TSACT;
+ err = pci_write_config_dword(pdev, PCI_REG_NPKDSC, npkdsc);
+ }
+
+ if (err)
+ dev_err(&pdev->dev, "failed to read NPKDSC register\n");
+}
+
+static int intel_th_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct intel_th_drvdata *drvdata = (void *)id->driver_data;
+ struct intel_th *th;
+ int err;
+
+ err = pcim_enable_device(pdev);
+ if (err)
+ return err;
+
+ err = pcim_iomap_regions_request_all(pdev, BAR_MASK, DRIVER_NAME);
+ if (err)
+ return err;
+
+ th = intel_th_alloc(&pdev->dev, drvdata, pdev->resource,
+ DEVICE_COUNT_RESOURCE, pdev->irq);
+ if (IS_ERR(th))
+ return PTR_ERR(th);
+
+ th->activate = intel_th_pci_activate;
+ th->deactivate = intel_th_pci_deactivate;
+
+ pci_set_master(pdev);
+
+ return 0;
+}
+
+static void intel_th_pci_remove(struct pci_dev *pdev)
+{
+ struct intel_th *th = pci_get_drvdata(pdev);
+
+ intel_th_free(th);
+}
+
+static const struct intel_th_drvdata intel_th_2x = {
+ .tscu_enable = 1,
+};
+
+static const struct pci_device_id intel_th_pci_id_table[] = {
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9d26),
+ .driver_data = (kernel_ulong_t)0,
+ },
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa126),
+ .driver_data = (kernel_ulong_t)0,
+ },
+ {
+ /* Apollo Lake */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a8e),
+ .driver_data = (kernel_ulong_t)0,
+ },
+ {
+ /* Broxton */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0a80),
+ .driver_data = (kernel_ulong_t)0,
+ },
+ {
+ /* Broxton B-step */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1a8e),
+ .driver_data = (kernel_ulong_t)0,
+ },
+ {
+ /* Kaby Lake PCH-H */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa2a6),
+ .driver_data = (kernel_ulong_t)0,
+ },
+ {
+ /* Denverton */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x19e1),
+ .driver_data = (kernel_ulong_t)0,
+ },
+ {
+ /* Lewisburg PCH */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa1a6),
+ .driver_data = (kernel_ulong_t)0,
+ },
+ {
+ /* Gemini Lake */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x318e),
+ .driver_data = (kernel_ulong_t)&intel_th_2x,
+ },
+ {
+ /* Cannon Lake H */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa326),
+ .driver_data = (kernel_ulong_t)&intel_th_2x,
+ },
+ {
+ /* Cannon Lake LP */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9da6),
+ .driver_data = (kernel_ulong_t)&intel_th_2x,
+ },
+ {
+ /* Cedar Fork PCH */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x18e1),
+ .driver_data = (kernel_ulong_t)&intel_th_2x,
+ },
+ {
+ /* Ice Lake PCH */
+ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x34a6),
+ .driver_data = (kernel_ulong_t)&intel_th_2x,
+ },
+ { 0 },
+};
+
+MODULE_DEVICE_TABLE(pci, intel_th_pci_id_table);
+
+static struct pci_driver intel_th_pci_driver = {
+ .name = DRIVER_NAME,
+ .id_table = intel_th_pci_id_table,
+ .probe = intel_th_pci_probe,
+ .remove = intel_th_pci_remove,
+};
+
+module_pci_driver(intel_th_pci_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Intel(R) Trace Hub PCI controller driver");
+MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");