xref: /linux/drivers/hwtracing/intel_th/pci.c (revision 2eff01ee2881becc9daaa0d53477ec202136b1f4) 
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 
20 enum {
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 
30 static 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 
51 static 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 
70 static 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 
120 err_free_irq:
121 	pci_free_irq_vectors(pdev);
122 	return err;
123 }
124 
125 static 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 
134 static const struct intel_th_drvdata intel_th_1x_multi_is_broken = {
135 	.multi_is_broken	= 1,
136 };
137 
138 static const struct intel_th_drvdata intel_th_2x = {
139 	.tscu_enable	= 1,
140 	.has_mintctl	= 1,
141 };
142 
143 static 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 		/* Alder Lake CPU */
339 		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x466f),
340 		.driver_data = (kernel_ulong_t)&intel_th_2x,
341 	},
342 	{
343 		/* Rocket Lake CPU */
344 		PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4c19),
345 		.driver_data = (kernel_ulong_t)&intel_th_2x,
346 	},
347 	{ 0 },
348 };
349 
350 MODULE_DEVICE_TABLE(pci, intel_th_pci_id_table);
351 
352 static struct pci_driver intel_th_pci_driver = {
353 	.name		= DRIVER_NAME,
354 	.id_table	= intel_th_pci_id_table,
355 	.probe		= intel_th_pci_probe,
356 	.remove		= intel_th_pci_remove,
357 };
358 
359 module_pci_driver(intel_th_pci_driver);
360 
361 MODULE_LICENSE("GPL v2");
362 MODULE_DESCRIPTION("Intel(R) Trace Hub PCI controller driver");
363 MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");
364