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kernel/linux-rt-4.4.41/drivers/hwtracing/intel_th/pci.c 2.14 KB
5113f6f70   김현기   kernel add
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  /*
   * Intel(R) Trace Hub pci driver
   *
   * Copyright (C) 2014-2015 Intel Corporation.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   *
   * This program is distributed in the hope it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   */
  
  #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))
  
  static int intel_th_pci_probe(struct pci_dev *pdev,
  			      const struct pci_device_id *id)
  {
  	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, pdev->resource,
  			    DEVICE_COUNT_RESOURCE, pdev->irq);
  	if (IS_ERR(th))
  		return PTR_ERR(th);
  
  	pci_set_drvdata(pdev, th);
  
  	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 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,
  	},
  	{
  		/* Kaby Lake PCH-H */
  		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa2a6),
  		.driver_data = (kernel_ulong_t)0,
  	},
  	{ 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>");