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Alexander Shishkin50352fa2018-03-28 18:46:15 +03001// SPDX-License-Identifier: GPL-2.0
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +03002/*
3 * Intel(R) Trace Hub pci driver
4 *
5 * Copyright (C) 2014-2015 Intel Corporation.
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +03006 */
7
8#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10#include <linux/types.h>
11#include <linux/module.h>
12#include <linux/device.h>
13#include <linux/sysfs.h>
14#include <linux/pci.h>
15
16#include "intel_th.h"
17
18#define DRIVER_NAME "intel_th_pci"
19
Alexander Shishkindb73a052019-05-03 11:44:36 +030020enum {
21 TH_PCI_CONFIG_BAR = 0,
22 TH_PCI_STH_SW_BAR = 2,
Alexander Shishkinfc027f42019-05-03 11:44:38 +030023 TH_PCI_RTIT_BAR = 4,
Alexander Shishkindb73a052019-05-03 11:44:36 +030024};
25
26#define BAR_MASK (BIT(TH_PCI_CONFIG_BAR) | BIT(TH_PCI_STH_SW_BAR))
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +030027
Alexander Shishkina0e7df32017-02-24 16:09:40 +020028#define PCI_REG_NPKDSC 0x80
29#define NPKDSC_TSACT BIT(5)
30
31static int intel_th_pci_activate(struct intel_th *th)
32{
33 struct pci_dev *pdev = to_pci_dev(th->dev);
34 u32 npkdsc;
35 int err;
36
37 if (!INTEL_TH_CAP(th, tscu_enable))
38 return 0;
39
40 err = pci_read_config_dword(pdev, PCI_REG_NPKDSC, &npkdsc);
41 if (!err) {
42 npkdsc |= NPKDSC_TSACT;
43 err = pci_write_config_dword(pdev, PCI_REG_NPKDSC, npkdsc);
44 }
45
46 if (err)
47 dev_err(&pdev->dev, "failed to read NPKDSC register\n");
48
49 return err;
50}
51
52static void intel_th_pci_deactivate(struct intel_th *th)
53{
54 struct pci_dev *pdev = to_pci_dev(th->dev);
55 u32 npkdsc;
56 int err;
57
58 if (!INTEL_TH_CAP(th, tscu_enable))
59 return;
60
61 err = pci_read_config_dword(pdev, PCI_REG_NPKDSC, &npkdsc);
62 if (!err) {
63 npkdsc |= NPKDSC_TSACT;
64 err = pci_write_config_dword(pdev, PCI_REG_NPKDSC, npkdsc);
65 }
66
67 if (err)
68 dev_err(&pdev->dev, "failed to read NPKDSC register\n");
69}
70
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +030071static int intel_th_pci_probe(struct pci_dev *pdev,
72 const struct pci_device_id *id)
73{
Alexander Shishkina525ed12021-04-14 20:12:47 +030074 const struct intel_th_drvdata *drvdata = (void *)id->driver_data;
Alexander Shishkin7b7036d2019-05-03 11:44:40 +030075 struct resource resource[TH_MMIO_END + TH_NVEC_MAX] = {
Alexander Shishkindb73a052019-05-03 11:44:36 +030076 [TH_MMIO_CONFIG] = pdev->resource[TH_PCI_CONFIG_BAR],
77 [TH_MMIO_SW] = pdev->resource[TH_PCI_STH_SW_BAR],
78 };
Alexander Shishkin7b7036d2019-05-03 11:44:40 +030079 int err, r = TH_MMIO_SW + 1, i;
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +030080 struct intel_th *th;
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +030081
82 err = pcim_enable_device(pdev);
83 if (err)
84 return err;
85
86 err = pcim_iomap_regions_request_all(pdev, BAR_MASK, DRIVER_NAME);
87 if (err)
88 return err;
89
Alexander Shishkinfc027f42019-05-03 11:44:38 +030090 if (pdev->resource[TH_PCI_RTIT_BAR].start) {
91 resource[TH_MMIO_RTIT] = pdev->resource[TH_PCI_RTIT_BAR];
92 r++;
93 }
94
Alexander Shishkin7b7036d2019-05-03 11:44:40 +030095 err = pci_alloc_irq_vectors(pdev, 1, 8, PCI_IRQ_ALL_TYPES);
96 if (err > 0)
97 for (i = 0; i < err; i++, r++) {
98 resource[r].flags = IORESOURCE_IRQ;
99 resource[r].start = pci_irq_vector(pdev, i);
100 }
Alexander Shishkin62a59302019-05-03 11:44:39 +0300101
102 th = intel_th_alloc(&pdev->dev, drvdata, resource, r);
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +0300103 if (IS_ERR(th))
104 return PTR_ERR(th);
105
Alexander Shishkina0e7df32017-02-24 16:09:40 +0200106 th->activate = intel_th_pci_activate;
107 th->deactivate = intel_th_pci_deactivate;
108
Alexander Shishkine9b2b3e2017-08-10 11:10:58 +0300109 pci_set_master(pdev);
110
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +0300111 return 0;
112}
113
114static void intel_th_pci_remove(struct pci_dev *pdev)
115{
116 struct intel_th *th = pci_get_drvdata(pdev);
117
118 intel_th_free(th);
Alexander Shishkin7b7036d2019-05-03 11:44:40 +0300119
120 pci_free_irq_vectors(pdev);
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +0300121}
122
Alexander Shishkin397c7722020-03-17 08:22:10 +0200123static const struct intel_th_drvdata intel_th_1x_multi_is_broken = {
124 .multi_is_broken = 1,
125};
126
Alexander Shishkina0e7df32017-02-24 16:09:40 +0200127static const struct intel_th_drvdata intel_th_2x = {
128 .tscu_enable = 1,
Alexander Shishkin4c5bb6e2019-05-03 11:44:42 +0300129 .has_mintctl = 1,
Alexander Shishkina0e7df32017-02-24 16:09:40 +0200130};
131
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +0300132static const struct pci_device_id intel_th_pci_id_table[] = {
133 {
134 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9d26),
135 .driver_data = (kernel_ulong_t)0,
136 },
137 {
138 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa126),
139 .driver_data = (kernel_ulong_t)0,
140 },
Alexander Shishkin6396b912015-12-22 17:25:22 +0200141 {
142 /* Apollo Lake */
143 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a8e),
144 .driver_data = (kernel_ulong_t)0,
145 },
Alexander Shishkin3f040882015-12-22 17:25:23 +0200146 {
147 /* Broxton */
148 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0a80),
149 .driver_data = (kernel_ulong_t)0,
150 },
Alexander Shishkinaaa3ca82016-04-08 18:26:52 +0300151 {
152 /* Broxton B-step */
153 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1a8e),
154 .driver_data = (kernel_ulong_t)0,
155 },
Alexander Shishkin7a1a47c2016-06-28 18:55:23 +0300156 {
157 /* Kaby Lake PCH-H */
158 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa2a6),
Alexander Shishkin397c7722020-03-17 08:22:10 +0200159 .driver_data = (kernel_ulong_t)&intel_th_1x_multi_is_broken,
Alexander Shishkin7a1a47c2016-06-28 18:55:23 +0300160 },
Alexander Shishkin5118ccd2015-09-08 14:03:55 +0300161 {
162 /* Denverton */
163 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x19e1),
164 .driver_data = (kernel_ulong_t)0,
165 },
Alexander Shishkin340837f2016-06-30 16:10:51 +0300166 {
Alexander Shishkin24600842017-09-19 18:47:42 +0300167 /* Lewisburg PCH */
168 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa1a6),
169 .driver_data = (kernel_ulong_t)0,
170 },
171 {
Alexander Shishkin164eb562019-08-21 10:49:54 +0300172 /* Lewisburg PCH */
173 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa226),
174 .driver_data = (kernel_ulong_t)0,
175 },
176 {
Alexander Shishkin340837f2016-06-30 16:10:51 +0300177 /* Gemini Lake */
178 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x318e),
Alexander Shishkina0e7df32017-02-24 16:09:40 +0200179 .driver_data = (kernel_ulong_t)&intel_th_2x,
Alexander Shishkin340837f2016-06-30 16:10:51 +0300180 },
Alexander Shishkin84331e12016-06-30 16:11:13 +0300181 {
182 /* Cannon Lake H */
183 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa326),
Alexander Shishkina0e7df32017-02-24 16:09:40 +0200184 .driver_data = (kernel_ulong_t)&intel_th_2x,
Alexander Shishkin84331e12016-06-30 16:11:13 +0300185 },
Alexander Shishkinefb36692016-06-30 16:11:31 +0300186 {
187 /* Cannon Lake LP */
188 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9da6),
Alexander Shishkina0e7df32017-02-24 16:09:40 +0200189 .driver_data = (kernel_ulong_t)&intel_th_2x,
Alexander Shishkinefb36692016-06-30 16:11:31 +0300190 },
Alexander Shishkin920ce7c2017-09-19 18:47:41 +0300191 {
192 /* Cedar Fork PCH */
193 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x18e1),
194 .driver_data = (kernel_ulong_t)&intel_th_2x,
195 },
Alexander Shishkin59d08d002018-09-18 16:10:49 +0300196 {
197 /* Ice Lake PCH */
198 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x34a6),
199 .driver_data = (kernel_ulong_t)&intel_th_2x,
200 },
Alexander Shishkine60e9a42019-04-17 10:35:36 +0300201 {
202 /* Comet Lake */
203 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x02a6),
204 .driver_data = (kernel_ulong_t)&intel_th_2x,
205 },
Alexander Shishkin4aa5aed2019-06-21 19:19:30 +0300206 {
Alexander Shishkin3adbb572019-10-28 09:06:50 +0200207 /* Comet Lake PCH */
208 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x06a6),
209 .driver_data = (kernel_ulong_t)&intel_th_2x,
210 },
211 {
Alexander Shishkine4de2a52019-12-17 13:55:24 +0200212 /* Comet Lake PCH-V */
213 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa3a6),
Alexander Shishkin397c7722020-03-17 08:22:10 +0200214 .driver_data = (kernel_ulong_t)&intel_th_1x_multi_is_broken,
Alexander Shishkine4de2a52019-12-17 13:55:24 +0200215 },
216 {
Alexander Shishkin4aa5aed2019-06-21 19:19:30 +0300217 /* Ice Lake NNPI */
218 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x45c5),
219 .driver_data = (kernel_ulong_t)&intel_th_2x,
220 },
Alexander Shishkin9c782552019-08-21 10:49:55 +0300221 {
Alexander Shishkin6a174342019-11-20 15:08:05 +0200222 /* Ice Lake CPU */
223 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8a29),
224 .driver_data = (kernel_ulong_t)&intel_th_2x,
225 },
226 {
Alexander Shishkin6e6c18b2019-11-20 15:08:06 +0200227 /* Tiger Lake CPU */
228 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9a33),
229 .driver_data = (kernel_ulong_t)&intel_th_2x,
230 },
231 {
Alexander Shishkin9c782552019-08-21 10:49:55 +0300232 /* Tiger Lake PCH */
233 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa0a6),
234 .driver_data = (kernel_ulong_t)&intel_th_2x,
235 },
Alexander Shishkin9d554992019-10-28 09:06:51 +0200236 {
Alexander Shishkin62275852020-07-06 19:13:37 +0300237 /* Tiger Lake PCH-H */
238 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x43a6),
239 .driver_data = (kernel_ulong_t)&intel_th_2x,
240 },
241 {
Alexander Shishkin9d554992019-10-28 09:06:51 +0200242 /* Jasper Lake PCH */
243 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4da6),
244 .driver_data = (kernel_ulong_t)&intel_th_2x,
245 },
Alexander Shishkin88385862019-12-17 13:55:25 +0200246 {
Alexander Shishkin203c1f62020-07-06 19:13:36 +0300247 /* Jasper Lake CPU */
248 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4e29),
249 .driver_data = (kernel_ulong_t)&intel_th_2x,
250 },
251 {
Alexander Shishkinadd492d2020-03-17 08:22:15 +0200252 /* Elkhart Lake CPU */
253 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4529),
254 .driver_data = (kernel_ulong_t)&intel_th_2x,
255 },
256 {
Alexander Shishkin88385862019-12-17 13:55:25 +0200257 /* Elkhart Lake */
258 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4b26),
259 .driver_data = (kernel_ulong_t)&intel_th_2x,
260 },
Alexander Shishkinfd73d742020-07-06 19:13:38 +0300261 {
262 /* Emmitsburg PCH */
263 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1bcc),
264 .driver_data = (kernel_ulong_t)&intel_th_2x,
265 },
Alexander Shishkin951e4d72020-10-05 10:13:18 +0300266 {
267 /* Alder Lake */
268 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x7aa6),
269 .driver_data = (kernel_ulong_t)&intel_th_2x,
270 },
Alexander Shishkin9f126c52020-10-05 10:13:19 +0300271 {
Alexander Shishkincb5c6812021-01-15 22:59:17 +0300272 /* Alder Lake-P */
273 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x51a6),
274 .driver_data = (kernel_ulong_t)&intel_th_2x,
275 },
276 {
Alexander Shishkin48cb1752021-04-14 20:12:51 +0300277 /* Alder Lake-M */
278 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x54a6),
279 .driver_data = (kernel_ulong_t)&intel_th_2x,
280 },
281 {
Alexander Shishkin9f126c52020-10-05 10:13:19 +0300282 /* Alder Lake CPU */
283 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x466f),
284 .driver_data = (kernel_ulong_t)&intel_th_2x,
285 },
Alexander Shishkin9f7f2a52021-04-14 20:12:50 +0300286 {
287 /* Rocket Lake CPU */
288 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4c19),
289 .driver_data = (kernel_ulong_t)&intel_th_2x,
290 },
Alexander Shishkin2b0b16d2015-09-22 15:47:15 +0300291 { 0 },
292};
293
294MODULE_DEVICE_TABLE(pci, intel_th_pci_id_table);
295
296static struct pci_driver intel_th_pci_driver = {
297 .name = DRIVER_NAME,
298 .id_table = intel_th_pci_id_table,
299 .probe = intel_th_pci_probe,
300 .remove = intel_th_pci_remove,
301};
302
303module_pci_driver(intel_th_pci_driver);
304
305MODULE_LICENSE("GPL v2");
306MODULE_DESCRIPTION("Intel(R) Trace Hub PCI controller driver");
307MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");