LXR linux/drivers/hwtracing/intel

   1/*
   2 * Intel(R) Trace Hub pci driver
   3 *
   4 * Copyright (C) 2014-2015 Intel Corporation.
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms and conditions of the GNU General Public License,
   8 * version 2, as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope it will be useful, but WITHOUT
  11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13 * more details.
  14 */
  15
  16#define pr_fmt(fmt)     KBUILD_MODNAME ": " fmt
  17
  18#include <linux/types.h>
  19#include <linux/module.h>
  20#include <linux/device.h>
  21#include <linux/sysfs.h>
  22#include <linux/pci.h>
  23
  24#include "intel_th.h"
  25
  26#define DRIVER_NAME "intel_th_pci"
  27
  28#define BAR_MASK (BIT(TH_MMIO_CONFIG) | BIT(TH_MMIO_SW))
  29
  30static int intel_th_pci_probe(struct pci_dev *pdev,
  31                              const struct pci_device_id *id)
  32{
  33        struct intel_th *th;
  34        int err;
  35
  36        err = pcim_enable_device(pdev);
  37        if (err)
  38                return err;
  39
  40        err = pcim_iomap_regions_request_all(pdev, BAR_MASK, DRIVER_NAME);
  41        if (err)
  42                return err;
  43
  44        th = intel_th_alloc(&pdev->dev, pdev->resource,
  45                            DEVICE_COUNT_RESOURCE, pdev->irq);
  46        if (IS_ERR(th))
  47                return PTR_ERR(th);
  48
  49        return 0;
  50}
  51
  52static void intel_th_pci_remove(struct pci_dev *pdev)
  53{
  54        struct intel_th *th = pci_get_drvdata(pdev);
  55
  56        intel_th_free(th);
  57}
  58
  59static const struct pci_device_id intel_th_pci_id_table[] = {
  60        {
  61                PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9d26),
  62                .driver_data = (kernel_ulong_t)0,
  63        },
  64        {
  65                PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa126),
  66                .driver_data = (kernel_ulong_t)0,
  67        },
  68        {
  69                /* Apollo Lake */
  70                PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a8e),
  71                .driver_data = (kernel_ulong_t)0,
  72        },
  73        {
  74                /* Broxton */
  75                PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0a80),
  76                .driver_data = (kernel_ulong_t)0,
  77        },
  78        { 0 },
  79};
  80
  81MODULE_DEVICE_TABLE(pci, intel_th_pci_id_table);
  82
  83static struct pci_driver intel_th_pci_driver = {
  84        .name           = DRIVER_NAME,
  85        .id_table       = intel_th_pci_id_table,
  86        .probe          = intel_th_pci_probe,
  87        .remove         = intel_th_pci_remove,
  88};
  89
  90module_pci_driver(intel_th_pci_driver);
  91
  92MODULE_LICENSE("GPL v2");
  93MODULE_DESCRIPTION("Intel(R) Trace Hub PCI controller driver");
  94MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");
  95