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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Intel(R) Trace Hub pci driver
4 *
5 * Copyright (C) 2014-2015 Intel Corporation.
6 */
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
20enum {
21 TH_PCI_CONFIG_BAR = 0,
22 TH_PCI_STH_SW_BAR = 2,
23 TH_PCI_RTIT_BAR = 4,
24};
25
26
27#define PCI_REG_NPKDSC 0x80
28#define NPKDSC_TSACT BIT(5)
29
30static int intel_th_pci_activate(struct intel_th *th)
31{
32 struct pci_dev *pdev = to_pci_dev(th->dev);
33 u32 npkdsc;
34 int err;
35
36 if (!INTEL_TH_CAP(th, tscu_enable))
37 return 0;
38
39 err = pci_read_config_dword(pdev, PCI_REG_NPKDSC, &npkdsc);
40 if (!err) {
41 npkdsc |= NPKDSC_TSACT;
42 err = pci_write_config_dword(pdev, PCI_REG_NPKDSC, npkdsc);
43 }
44
45 if (err)
46 dev_err(&pdev->dev, "failed to read NPKDSC register\n");
47
48 return err;
49}
50
51static void intel_th_pci_deactivate(struct intel_th *th)
52{
53 struct pci_dev *pdev = to_pci_dev(th->dev);
54 u32 npkdsc;
55 int err;
56
57 if (!INTEL_TH_CAP(th, tscu_enable))
58 return;
59
60 err = pci_read_config_dword(pdev, PCI_REG_NPKDSC, &npkdsc);
61 if (!err) {
62 npkdsc |= NPKDSC_TSACT;
63 err = pci_write_config_dword(pdev, PCI_REG_NPKDSC, npkdsc);
64 }
65
66 if (err)
67 dev_err(&pdev->dev, "failed to read NPKDSC register\n");
68}
69
70static int intel_th_pci_probe(struct pci_dev *pdev,
71 const struct pci_device_id *id)
72{
73 const struct intel_th_drvdata *drvdata = (void *)id->driver_data;
74 struct resource resource[TH_MMIO_END + TH_NVEC_MAX] = {
75 [TH_MMIO_CONFIG] = pdev->resource[TH_PCI_CONFIG_BAR],
76 [TH_MMIO_SW] = pdev->resource[TH_PCI_STH_SW_BAR],
77 };
78 int err, r = TH_MMIO_SW + 1, i;
79 struct intel_th *th;
80
81 err = pcim_enable_device(pdev);
82 if (err)
83 return err;
84
85 err = pcim_request_all_regions(pdev, DRIVER_NAME);
86 if (err)
87 return err;
88
89 if (!pcim_iomap(pdev, TH_PCI_CONFIG_BAR, 0))
90 return -ENOMEM;
91
92 if (!pcim_iomap(pdev, TH_PCI_STH_SW_BAR, 0))
93 return -ENOMEM;
94
95 if (pdev->resource[TH_PCI_RTIT_BAR].start) {
96 resource[TH_MMIO_RTIT] = pdev->resource[TH_PCI_RTIT_BAR];
97 r++;
98 }
99
100 err = pci_alloc_irq_vectors(pdev, 1, 8, PCI_IRQ_ALL_TYPES);
101 if (err > 0)
102 for (i = 0; i < err; i++, r++) {
103 resource[r].flags = IORESOURCE_IRQ;
104 resource[r].start = pci_irq_vector(pdev, i);
105 }
106
107 th = intel_th_alloc(&pdev->dev, drvdata, resource, r);
108 if (IS_ERR(th)) {
109 err = PTR_ERR(th);
110 goto err_free_irq;
111 }
112
113 th->activate = intel_th_pci_activate;
114 th->deactivate = intel_th_pci_deactivate;
115
116 pci_set_master(pdev);
117
118 return 0;
119
120err_free_irq:
121 pci_free_irq_vectors(pdev);
122 return err;
123}
124
125static void intel_th_pci_remove(struct pci_dev *pdev)
126{
127 struct intel_th *th = pci_get_drvdata(pdev);
128
129 intel_th_free(th);
130
131 pci_free_irq_vectors(pdev);
132}
133
134static const struct intel_th_drvdata intel_th_1x_multi_is_broken = {
135 .multi_is_broken = 1,
136};
137
138static const struct intel_th_drvdata intel_th_2x = {
139 .tscu_enable = 1,
140 .has_mintctl = 1,
141};
142
143static const struct pci_device_id intel_th_pci_id_table[] = {
144 {
145 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9d26),
146 .driver_data = (kernel_ulong_t)0,
147 },
148 {
149 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa126),
150 .driver_data = (kernel_ulong_t)0,
151 },
152 {
153 /* Apollo Lake */
154 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x5a8e),
155 .driver_data = (kernel_ulong_t)0,
156 },
157 {
158 /* Broxton */
159 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0a80),
160 .driver_data = (kernel_ulong_t)0,
161 },
162 {
163 /* Broxton B-step */
164 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1a8e),
165 .driver_data = (kernel_ulong_t)0,
166 },
167 {
168 /* Kaby Lake PCH-H */
169 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa2a6),
170 .driver_data = (kernel_ulong_t)&intel_th_1x_multi_is_broken,
171 },
172 {
173 /* Denverton */
174 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x19e1),
175 .driver_data = (kernel_ulong_t)0,
176 },
177 {
178 /* Lewisburg PCH */
179 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa1a6),
180 .driver_data = (kernel_ulong_t)0,
181 },
182 {
183 /* Lewisburg PCH */
184 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa226),
185 .driver_data = (kernel_ulong_t)0,
186 },
187 {
188 /* Gemini Lake */
189 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x318e),
190 .driver_data = (kernel_ulong_t)&intel_th_2x,
191 },
192 {
193 /* Cannon Lake H */
194 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa326),
195 .driver_data = (kernel_ulong_t)&intel_th_2x,
196 },
197 {
198 /* Cannon Lake LP */
199 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9da6),
200 .driver_data = (kernel_ulong_t)&intel_th_2x,
201 },
202 {
203 /* Cedar Fork PCH */
204 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x18e1),
205 .driver_data = (kernel_ulong_t)&intel_th_2x,
206 },
207 {
208 /* Ice Lake PCH */
209 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x34a6),
210 .driver_data = (kernel_ulong_t)&intel_th_2x,
211 },
212 {
213 /* Comet Lake */
214 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x02a6),
215 .driver_data = (kernel_ulong_t)&intel_th_2x,
216 },
217 {
218 /* Comet Lake PCH */
219 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x06a6),
220 .driver_data = (kernel_ulong_t)&intel_th_2x,
221 },
222 {
223 /* Comet Lake PCH-V */
224 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa3a6),
225 .driver_data = (kernel_ulong_t)&intel_th_1x_multi_is_broken,
226 },
227 {
228 /* Ice Lake NNPI */
229 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x45c5),
230 .driver_data = (kernel_ulong_t)&intel_th_2x,
231 },
232 {
233 /* Ice Lake CPU */
234 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x8a29),
235 .driver_data = (kernel_ulong_t)&intel_th_2x,
236 },
237 {
238 /* Tiger Lake CPU */
239 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x9a33),
240 .driver_data = (kernel_ulong_t)&intel_th_2x,
241 },
242 {
243 /* Tiger Lake PCH */
244 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa0a6),
245 .driver_data = (kernel_ulong_t)&intel_th_2x,
246 },
247 {
248 /* Tiger Lake PCH-H */
249 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x43a6),
250 .driver_data = (kernel_ulong_t)&intel_th_2x,
251 },
252 {
253 /* Jasper Lake PCH */
254 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4da6),
255 .driver_data = (kernel_ulong_t)&intel_th_2x,
256 },
257 {
258 /* Jasper Lake CPU */
259 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4e29),
260 .driver_data = (kernel_ulong_t)&intel_th_2x,
261 },
262 {
263 /* Elkhart Lake CPU */
264 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4529),
265 .driver_data = (kernel_ulong_t)&intel_th_2x,
266 },
267 {
268 /* Elkhart Lake */
269 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4b26),
270 .driver_data = (kernel_ulong_t)&intel_th_2x,
271 },
272 {
273 /* Emmitsburg PCH */
274 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x1bcc),
275 .driver_data = (kernel_ulong_t)&intel_th_2x,
276 },
277 {
278 /* Alder Lake */
279 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x7aa6),
280 .driver_data = (kernel_ulong_t)&intel_th_2x,
281 },
282 {
283 /* Alder Lake-P */
284 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x51a6),
285 .driver_data = (kernel_ulong_t)&intel_th_2x,
286 },
287 {
288 /* Alder Lake-M */
289 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x54a6),
290 .driver_data = (kernel_ulong_t)&intel_th_2x,
291 },
292 {
293 /* Meteor Lake-P */
294 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x7e24),
295 .driver_data = (kernel_ulong_t)&intel_th_2x,
296 },
297 {
298 /* Meteor Lake-S */
299 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x7f26),
300 .driver_data = (kernel_ulong_t)&intel_th_2x,
301 },
302 {
303 /* Meteor Lake-S CPU */
304 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xae24),
305 .driver_data = (kernel_ulong_t)&intel_th_2x,
306 },
307 {
308 /* Raptor Lake-S */
309 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x7a26),
310 .driver_data = (kernel_ulong_t)&intel_th_2x,
311 },
312 {
313 /* Raptor Lake-S CPU */
314 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa76f),
315 .driver_data = (kernel_ulong_t)&intel_th_2x,
316 },
317 {
318 /* Granite Rapids */
319 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x0963),
320 .driver_data = (kernel_ulong_t)&intel_th_2x,
321 },
322 {
323 /* Granite Rapids SOC */
324 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x3256),
325 .driver_data = (kernel_ulong_t)&intel_th_2x,
326 },
327 {
328 /* Sapphire Rapids SOC */
329 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x3456),
330 .driver_data = (kernel_ulong_t)&intel_th_2x,
331 },
332 {
333 /* Lunar Lake */
334 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa824),
335 .driver_data = (kernel_ulong_t)&intel_th_2x,
336 },
337 {
338 /* Arrow Lake */
339 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x7724),
340 .driver_data = (kernel_ulong_t)&intel_th_2x,
341 },
342 {
343 /* Panther Lake-H */
344 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xe324),
345 .driver_data = (kernel_ulong_t)&intel_th_2x,
346 },
347 {
348 /* Panther Lake-P/U */
349 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xe424),
350 .driver_data = (kernel_ulong_t)&intel_th_2x,
351 },
352 {
353 /* Alder Lake CPU */
354 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x466f),
355 .driver_data = (kernel_ulong_t)&intel_th_2x,
356 },
357 {
358 /* Rocket Lake CPU */
359 PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4c19),
360 .driver_data = (kernel_ulong_t)&intel_th_2x,
361 },
362 { 0 },
363};
364
365MODULE_DEVICE_TABLE(pci, intel_th_pci_id_table);
366
367static struct pci_driver intel_th_pci_driver = {
368 .name = DRIVER_NAME,
369 .id_table = intel_th_pci_id_table,
370 .probe = intel_th_pci_probe,
371 .remove = intel_th_pci_remove,
372};
373
374module_pci_driver(intel_th_pci_driver);
375
376MODULE_LICENSE("GPL v2");
377MODULE_DESCRIPTION("Intel(R) Trace Hub PCI controller driver");
378MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");