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23#include <linux/pci.h>
24#include <linux/slab.h>
25#include <linux/module.h>
26#include <linux/acpi.h>
27
28#include "xhci.h"
29#include "xhci-trace.h"
30
31#define SSIC_PORT_NUM 2
32#define SSIC_PORT_CFG2 0x880c
33#define SSIC_PORT_CFG2_OFFSET 0x30
34#define PROG_DONE (1 << 30)
35#define SSIC_PORT_UNUSED (1 << 31)
36
37
38#define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73
39#define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000
40#define PCI_DEVICE_ID_FRESCO_LOGIC_FL1009 0x1009
41#define PCI_DEVICE_ID_FRESCO_LOGIC_FL1400 0x1400
42
43#define PCI_VENDOR_ID_ETRON 0x1b6f
44#define PCI_DEVICE_ID_EJ168 0x7023
45
46#define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI 0x8c31
47#define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31
48#define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI 0x9cb1
49#define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI 0x22b5
50#define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI 0xa12f
51#define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI 0x9d2f
52#define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8
53#define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI 0x1aa8
54#define PCI_DEVICE_ID_INTEL_APL_XHCI 0x5aa8
55#define PCI_DEVICE_ID_INTEL_DNV_XHCI 0x19d0
56
57#define PCI_DEVICE_ID_AMD_PROMONTORYA_4 0x43b9
58#define PCI_DEVICE_ID_AMD_PROMONTORYA_3 0x43ba
59#define PCI_DEVICE_ID_AMD_PROMONTORYA_2 0x43bb
60#define PCI_DEVICE_ID_AMD_PROMONTORYA_1 0x43bc
61
62#define PCI_DEVICE_ID_ASMEDIA_1042A_XHCI 0x1142
63
64static const char hcd_name[] = "xhci_hcd";
65
66static struct hc_driver __read_mostly xhci_pci_hc_driver;
67
68static int xhci_pci_setup(struct usb_hcd *hcd);
69
70static const struct xhci_driver_overrides xhci_pci_overrides __initconst = {
71 .reset = xhci_pci_setup,
72};
73
74
75static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
76{
77
78
79
80
81
82
83
84 if (!pci_set_mwi(pdev))
85 xhci_dbg(xhci, "MWI active\n");
86
87 xhci_dbg(xhci, "Finished xhci_pci_reinit\n");
88 return 0;
89}
90
91static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
92{
93 struct pci_dev *pdev = to_pci_dev(dev);
94
95
96 if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
97 (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK ||
98 pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1400)) {
99 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
100 pdev->revision == 0x0) {
101 xhci->quirks |= XHCI_RESET_EP_QUIRK;
102 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
103 "QUIRK: Fresco Logic xHC needs configure"
104 " endpoint cmd after reset endpoint");
105 }
106 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK &&
107 pdev->revision == 0x4) {
108 xhci->quirks |= XHCI_SLOW_SUSPEND;
109 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
110 "QUIRK: Fresco Logic xHC revision %u"
111 "must be suspended extra slowly",
112 pdev->revision);
113 }
114 if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK)
115 xhci->quirks |= XHCI_BROKEN_STREAMS;
116
117
118
119
120 xhci->quirks |= XHCI_BROKEN_MSI;
121 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
122 "QUIRK: Fresco Logic revision %u "
123 "has broken MSI implementation",
124 pdev->revision);
125 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
126 }
127
128 if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC &&
129 pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1009)
130 xhci->quirks |= XHCI_BROKEN_STREAMS;
131
132 if (pdev->vendor == PCI_VENDOR_ID_NEC)
133 xhci->quirks |= XHCI_NEC_HOST;
134
135 if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96)
136 xhci->quirks |= XHCI_AMD_0x96_HOST;
137
138
139 if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info())
140 xhci->quirks |= XHCI_AMD_PLL_FIX;
141
142 if (pdev->vendor == PCI_VENDOR_ID_AMD)
143 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
144
145 if ((pdev->vendor == PCI_VENDOR_ID_AMD) &&
146 ((pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_4) ||
147 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_3) ||
148 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_2) ||
149 (pdev->device == PCI_DEVICE_ID_AMD_PROMONTORYA_1)))
150 xhci->quirks |= XHCI_U2_DISABLE_WAKE;
151
152 if (pdev->vendor == PCI_VENDOR_ID_INTEL) {
153 xhci->quirks |= XHCI_LPM_SUPPORT;
154 xhci->quirks |= XHCI_INTEL_HOST;
155 xhci->quirks |= XHCI_AVOID_BEI;
156 }
157 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
158 pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) {
159 xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
160 xhci->limit_active_eps = 64;
161 xhci->quirks |= XHCI_SW_BW_CHECKING;
162
163
164
165
166
167
168
169
170 xhci->quirks |= XHCI_SPURIOUS_REBOOT;
171 }
172 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
173 (pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI ||
174 pdev->device == PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI)) {
175 xhci->quirks |= XHCI_SPURIOUS_REBOOT;
176 xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
177 }
178 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
179 (pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
180 pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
181 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
182 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI ||
183 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI ||
184 pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
185 pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI)) {
186 xhci->quirks |= XHCI_PME_STUCK_QUIRK;
187 }
188 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
189 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
190 xhci->quirks |= XHCI_SSIC_PORT_UNUSED;
191 }
192 if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
193 (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
194 pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI ||
195 pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI))
196 xhci->quirks |= XHCI_MISSING_CAS;
197
198 if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
199 pdev->device == PCI_DEVICE_ID_EJ168) {
200 xhci->quirks |= XHCI_RESET_ON_RESUME;
201 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
202 xhci->quirks |= XHCI_BROKEN_STREAMS;
203 }
204 if (pdev->vendor == PCI_VENDOR_ID_RENESAS &&
205 pdev->device == 0x0015)
206 xhci->quirks |= XHCI_RESET_ON_RESUME;
207 if (pdev->vendor == PCI_VENDOR_ID_VIA)
208 xhci->quirks |= XHCI_RESET_ON_RESUME;
209
210
211 if (pdev->vendor == PCI_VENDOR_ID_VIA &&
212 pdev->device == 0x3432)
213 xhci->quirks |= XHCI_BROKEN_STREAMS;
214
215 if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
216 pdev->device == 0x1042)
217 xhci->quirks |= XHCI_BROKEN_STREAMS;
218 if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
219 pdev->device == 0x1142)
220 xhci->quirks |= XHCI_TRUST_TX_LENGTH;
221
222 if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
223 pdev->device == PCI_DEVICE_ID_ASMEDIA_1042A_XHCI)
224 xhci->quirks |= XHCI_ASMEDIA_MODIFY_FLOWCONTROL;
225
226 if (pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241)
227 xhci->quirks |= XHCI_LIMIT_ENDPOINT_INTERVAL_7;
228
229 if (xhci->quirks & XHCI_RESET_ON_RESUME)
230 xhci_dbg_trace(xhci, trace_xhci_dbg_quirks,
231 "QUIRK: Resetting on resume");
232}
233
234#ifdef CONFIG_ACPI
235static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
236{
237 static const guid_t intel_dsm_guid =
238 GUID_INIT(0xac340cb7, 0xe901, 0x45bf,
239 0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23);
240 union acpi_object *obj;
241
242 obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), &intel_dsm_guid, 3, 1,
243 NULL);
244 ACPI_FREE(obj);
245}
246#else
247static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
248#endif
249
250
251static int xhci_pci_setup(struct usb_hcd *hcd)
252{
253 struct xhci_hcd *xhci;
254 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
255 int retval;
256
257 xhci = hcd_to_xhci(hcd);
258 if (!xhci->sbrn)
259 pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
260
261 retval = xhci_gen_setup(hcd, xhci_pci_quirks);
262 if (retval)
263 return retval;
264
265 if (!usb_hcd_is_primary_hcd(hcd))
266 return 0;
267
268 xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
269
270
271 return xhci_pci_reinit(xhci, pdev);
272}
273
274
275
276
277
278static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
279{
280 int retval;
281 struct xhci_hcd *xhci;
282 struct hc_driver *driver;
283 struct usb_hcd *hcd;
284
285 driver = (struct hc_driver *)id->driver_data;
286
287
288 if (usb_xhci_needs_pci_reset(dev)) {
289 dev_info(&dev->dev, "Resetting\n");
290 if (pci_reset_function_locked(dev))
291 dev_warn(&dev->dev, "Reset failed");
292 }
293
294
295 pm_runtime_get_noresume(&dev->dev);
296
297
298
299
300
301
302
303 retval = usb_hcd_pci_probe(dev, id);
304
305 if (retval)
306 goto put_runtime_pm;
307
308
309 hcd = dev_get_drvdata(&dev->dev);
310 xhci = hcd_to_xhci(hcd);
311 xhci->shared_hcd = usb_create_shared_hcd(driver, &dev->dev,
312 pci_name(dev), hcd);
313 if (!xhci->shared_hcd) {
314 retval = -ENOMEM;
315 goto dealloc_usb2_hcd;
316 }
317
318 retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
319 IRQF_SHARED);
320 if (retval)
321 goto put_usb3_hcd;
322
323
324 if (!(xhci->quirks & XHCI_BROKEN_STREAMS) &&
325 HCC_MAX_PSA(xhci->hcc_params) >= 4)
326 xhci->shared_hcd->can_do_streams = 1;
327
328 if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
329 xhci_pme_acpi_rtd3_enable(dev);
330
331
332 pm_runtime_put_noidle(&dev->dev);
333
334 return 0;
335
336put_usb3_hcd:
337 usb_put_hcd(xhci->shared_hcd);
338dealloc_usb2_hcd:
339 usb_hcd_pci_remove(dev);
340put_runtime_pm:
341 pm_runtime_put_noidle(&dev->dev);
342 return retval;
343}
344
345static void xhci_pci_remove(struct pci_dev *dev)
346{
347 struct xhci_hcd *xhci;
348
349 xhci = hcd_to_xhci(pci_get_drvdata(dev));
350 xhci->xhc_state |= XHCI_STATE_REMOVING;
351 if (xhci->shared_hcd) {
352 usb_remove_hcd(xhci->shared_hcd);
353 usb_put_hcd(xhci->shared_hcd);
354 }
355
356
357 if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
358 pci_set_power_state(dev, PCI_D3hot);
359
360 usb_hcd_pci_remove(dev);
361}
362
363#ifdef CONFIG_PM
364
365
366
367
368
369
370
371static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend)
372{
373 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
374 u32 val;
375 void __iomem *reg;
376 int i;
377
378 for (i = 0; i < SSIC_PORT_NUM; i++) {
379 reg = (void __iomem *) xhci->cap_regs +
380 SSIC_PORT_CFG2 +
381 i * SSIC_PORT_CFG2_OFFSET;
382
383
384 val = readl(reg) & ~PROG_DONE;
385 writel(val, reg);
386
387
388 val = readl(reg);
389 if (suspend)
390 val |= SSIC_PORT_UNUSED;
391 else
392 val &= ~SSIC_PORT_UNUSED;
393 writel(val, reg);
394
395
396 val = readl(reg) | PROG_DONE;
397 writel(val, reg);
398 readl(reg);
399 }
400}
401
402
403
404
405
406static void xhci_pme_quirk(struct usb_hcd *hcd)
407{
408 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
409 void __iomem *reg;
410 u32 val;
411
412 reg = (void __iomem *) xhci->cap_regs + 0x80a4;
413 val = readl(reg);
414 writel(val | BIT(28), reg);
415 readl(reg);
416}
417
418static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
419{
420 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
421 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
422 int ret;
423
424
425
426
427
428 if (xhci->quirks & XHCI_COMP_MODE_QUIRK)
429 pci_d3cold_disable(pdev);
430
431 if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
432 xhci_pme_quirk(hcd);
433
434 if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
435 xhci_ssic_port_unused_quirk(hcd, true);
436
437 ret = xhci_suspend(xhci, do_wakeup);
438 if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED))
439 xhci_ssic_port_unused_quirk(hcd, false);
440
441 return ret;
442}
443
444static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
445{
446 struct xhci_hcd *xhci = hcd_to_xhci(hcd);
447 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
448 int retval = 0;
449
450
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465
466
467
468 if (pdev->vendor == PCI_VENDOR_ID_INTEL)
469 usb_enable_intel_xhci_ports(pdev);
470
471 if (xhci->quirks & XHCI_SSIC_PORT_UNUSED)
472 xhci_ssic_port_unused_quirk(hcd, false);
473
474 if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
475 xhci_pme_quirk(hcd);
476
477 retval = xhci_resume(xhci, hibernated);
478 return retval;
479}
480#endif
481
482
483
484
485static const struct pci_device_id pci_ids[] = { {
486
487 PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0),
488 .driver_data = (unsigned long) &xhci_pci_hc_driver,
489 },
490 { }
491};
492MODULE_DEVICE_TABLE(pci, pci_ids);
493
494
495static struct pci_driver xhci_pci_driver = {
496 .name = (char *) hcd_name,
497 .id_table = pci_ids,
498
499 .probe = xhci_pci_probe,
500 .remove = xhci_pci_remove,
501
502
503 .shutdown = usb_hcd_pci_shutdown,
504#ifdef CONFIG_PM
505 .driver = {
506 .pm = &usb_hcd_pci_pm_ops
507 },
508#endif
509};
510
511static int __init xhci_pci_init(void)
512{
513 xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides);
514#ifdef CONFIG_PM
515 xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend;
516 xhci_pci_hc_driver.pci_resume = xhci_pci_resume;
517#endif
518 return pci_register_driver(&xhci_pci_driver);
519}
520module_init(xhci_pci_init);
521
522static void __exit xhci_pci_exit(void)
523{
524 pci_unregister_driver(&xhci_pci_driver);
525}
526module_exit(xhci_pci_exit);
527
528MODULE_DESCRIPTION("xHCI PCI Host Controller Driver");
529MODULE_LICENSE("GPL");
530