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
intel_th_pci_probe(struct pci_dev * pdev,const struct pci_device_id * id)30 static 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 pci_set_drvdata(pdev, th);
50
51 return 0;
52 }
53
intel_th_pci_remove(struct pci_dev * pdev)54 static void intel_th_pci_remove(struct pci_dev *pdev)
55 {
56 struct intel_th *th = pci_get_drvdata(pdev);
57
58 intel_th_free(th);
59 }
60
61 static const struct pci_device_id intel_th_pci_id_table[] = {
62 {
63 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9d26),
64 .driver_data = (kernel_ulong_t)0,
65 },
66 {
67 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa126),
68 .driver_data = (kernel_ulong_t)0,
69 },
70 {
71 /* Kaby Lake PCH-H */
72 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa2a6),
73 .driver_data = (kernel_ulong_t)0,
74 },
75 {
76 /* Cannon Lake H */
77 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa326),
78 .driver_data = (kernel_ulong_t)0,
79 },
80 {
81 /* Cannon Lake LP */
82 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9da6),
83 .driver_data = (kernel_ulong_t)0,
84 },
85 {
86 /* Gemini Lake */
87 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x318e),
88 .driver_data = (kernel_ulong_t)0,
89 },
90 { 0 },
91 };
92
93 MODULE_DEVICE_TABLE(pci, intel_th_pci_id_table);
94
95 static struct pci_driver intel_th_pci_driver = {
96 .name = DRIVER_NAME,
97 .id_table = intel_th_pci_id_table,
98 .probe = intel_th_pci_probe,
99 .remove = intel_th_pci_remove,
100 };
101
102 module_pci_driver(intel_th_pci_driver);
103
104 MODULE_LICENSE("GPL v2");
105 MODULE_DESCRIPTION("Intel(R) Trace Hub PCI controller driver");
106 MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");
107