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Commit | Line | Data |
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66d4eadd SS |
1 | /* |
2 | * xHCI host controller driver PCI Bus Glue. | |
3 | * | |
4 | * Copyright (C) 2008 Intel Corp. | |
5 | * | |
6 | * Author: Sarah Sharp | |
7 | * Some code borrowed from the Linux EHCI driver. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
15 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | * for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software Foundation, | |
20 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | */ | |
22 | ||
23 | #include <linux/pci.h> | |
7fc2a616 | 24 | #include <linux/slab.h> |
6eb0de82 | 25 | #include <linux/module.h> |
c3c5819a | 26 | #include <linux/acpi.h> |
66d4eadd SS |
27 | |
28 | #include "xhci.h" | |
4bdfe4c3 | 29 | #include "xhci-trace.h" |
66d4eadd | 30 | |
fa895377 LB |
31 | #define SSIC_PORT_NUM 2 |
32 | #define SSIC_PORT_CFG2 0x880c | |
33 | #define SSIC_PORT_CFG2_OFFSET 0x30 | |
abce329c RM |
34 | #define PROG_DONE (1 << 30) |
35 | #define SSIC_PORT_UNUSED (1 << 31) | |
36 | ||
ac9d8fe7 SS |
37 | /* Device for a quirk */ |
38 | #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73 | |
39 | #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000 | |
d95815ba | 40 | #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1009 0x1009 |
bba18e33 | 41 | #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1400 0x1400 |
ac9d8fe7 | 42 | |
c877b3b2 | 43 | #define PCI_VENDOR_ID_ETRON 0x1b6f |
170625e9 | 44 | #define PCI_DEVICE_ID_EJ168 0x7023 |
c877b3b2 | 45 | |
638298dc TI |
46 | #define PCI_DEVICE_ID_INTEL_LYNXPOINT_XHCI 0x8c31 |
47 | #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI 0x9c31 | |
4c39135a | 48 | #define PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI 0x9cb1 |
b8cb91e0 MN |
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 | |
ccc04afb | 52 | #define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI 0x0aa8 |
0d46faca | 53 | #define PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI 0x1aa8 |
346e9973 | 54 | #define PCI_DEVICE_ID_INTEL_APL_XHCI 0x5aa8 |
a0c16630 | 55 | #define PCI_DEVICE_ID_INTEL_DNV_XHCI 0x19d0 |
638298dc | 56 | |
dec08194 JC |
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 | ||
9da5a109 JC |
62 | #define PCI_DEVICE_ID_ASMEDIA_1042A_XHCI 0x1142 |
63 | ||
66d4eadd SS |
64 | static const char hcd_name[] = "xhci_hcd"; |
65 | ||
1885d9a3 AB |
66 | static struct hc_driver __read_mostly xhci_pci_hc_driver; |
67 | ||
cd33a321 RQ |
68 | static int xhci_pci_setup(struct usb_hcd *hcd); |
69 | ||
70 | static const struct xhci_driver_overrides xhci_pci_overrides __initconst = { | |
cd33a321 RQ |
71 | .reset = xhci_pci_setup, |
72 | }; | |
73 | ||
66d4eadd SS |
74 | /* called after powerup, by probe or system-pm "wakeup" */ |
75 | static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) | |
76 | { | |
77 | /* | |
78 | * TODO: Implement finding debug ports later. | |
79 | * TODO: see if there are any quirks that need to be added to handle | |
80 | * new extended capabilities. | |
81 | */ | |
82 | ||
83 | /* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */ | |
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 | ||
da3c9c4f SAS |
91 | static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) |
92 | { | |
93 | struct pci_dev *pdev = to_pci_dev(dev); | |
94 | ||
ac9d8fe7 SS |
95 | /* Look for vendor-specific quirks */ |
96 | if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && | |
bba18e33 SS |
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) { | |
ac9d8fe7 | 101 | xhci->quirks |= XHCI_RESET_EP_QUIRK; |
4bdfe4c3 XR |
102 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
103 | "QUIRK: Fresco Logic xHC needs configure" | |
104 | " endpoint cmd after reset endpoint"); | |
f5182b41 | 105 | } |
455f5892 ON |
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 | } | |
7f5c4d63 HG |
114 | if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK) |
115 | xhci->quirks |= XHCI_BROKEN_STREAMS; | |
f5182b41 SS |
116 | /* Fresco Logic confirms: all revisions of this chip do not |
117 | * support MSI, even though some of them claim to in their PCI | |
118 | * capabilities. | |
119 | */ | |
120 | xhci->quirks |= XHCI_BROKEN_MSI; | |
4bdfe4c3 XR |
121 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
122 | "QUIRK: Fresco Logic revision %u " | |
123 | "has broken MSI implementation", | |
f5182b41 | 124 | pdev->revision); |
1530bbc6 | 125 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; |
ac9d8fe7 | 126 | } |
f5182b41 | 127 | |
d95815ba HG |
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 | ||
0238634d SS |
132 | if (pdev->vendor == PCI_VENDOR_ID_NEC) |
133 | xhci->quirks |= XHCI_NEC_HOST; | |
ac9d8fe7 | 134 | |
7e393a83 AX |
135 | if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96) |
136 | xhci->quirks |= XHCI_AMD_0x96_HOST; | |
137 | ||
c41136b0 AX |
138 | /* AMD PLL quirk */ |
139 | if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info()) | |
140 | xhci->quirks |= XHCI_AMD_PLL_FIX; | |
2597fe99 HR |
141 | |
142 | if (pdev->vendor == PCI_VENDOR_ID_AMD) | |
143 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; | |
144 | ||
dec08194 JC |
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 | ||
e3567d2c SS |
152 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) { |
153 | xhci->quirks |= XHCI_LPM_SUPPORT; | |
154 | xhci->quirks |= XHCI_INTEL_HOST; | |
227a4fd8 | 155 | xhci->quirks |= XHCI_AVOID_BEI; |
e3567d2c | 156 | } |
ad808333 SS |
157 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
158 | pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) { | |
2cf95c18 SS |
159 | xhci->quirks |= XHCI_EP_LIMIT_QUIRK; |
160 | xhci->limit_active_eps = 64; | |
86cc558e | 161 | xhci->quirks |= XHCI_SW_BW_CHECKING; |
e95829f4 SS |
162 | /* |
163 | * PPT desktop boards DH77EB and DH77DF will power back on after | |
164 | * a few seconds of being shutdown. The fix for this is to | |
165 | * switch the ports from xHCI to EHCI on shutdown. We can't use | |
166 | * DMI information to find those particular boards (since each | |
167 | * vendor will change the board name), so we have to key off all | |
168 | * PPT chipsets. | |
169 | */ | |
170 | xhci->quirks |= XHCI_SPURIOUS_REBOOT; | |
ad808333 | 171 | } |
0a939993 | 172 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
4c39135a MN |
173 | (pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI || |
174 | pdev->device == PCI_DEVICE_ID_INTEL_WILDCATPOINT_LP_XHCI)) { | |
c09ec25d | 175 | xhci->quirks |= XHCI_SPURIOUS_REBOOT; |
fd7cd061 | 176 | xhci->quirks |= XHCI_SPURIOUS_WAKEUP; |
638298dc | 177 | } |
b8cb91e0 MN |
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 || | |
ccc04afb | 181 | pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI || |
0d46faca | 182 | pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI || |
6c97cfc1 | 183 | pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_B_XHCI || |
a0c16630 MN |
184 | pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI || |
185 | pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI)) { | |
b8cb91e0 MN |
186 | xhci->quirks |= XHCI_PME_STUCK_QUIRK; |
187 | } | |
7e70cbff LB |
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 | } | |
346e9973 MN |
192 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
193 | (pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI || | |
a0c16630 MN |
194 | pdev->device == PCI_DEVICE_ID_INTEL_APL_XHCI || |
195 | pdev->device == PCI_DEVICE_ID_INTEL_DNV_XHCI)) | |
346e9973 MN |
196 | xhci->quirks |= XHCI_MISSING_CAS; |
197 | ||
c877b3b2 | 198 | if (pdev->vendor == PCI_VENDOR_ID_ETRON && |
170625e9 | 199 | pdev->device == PCI_DEVICE_ID_EJ168) { |
c877b3b2 | 200 | xhci->quirks |= XHCI_RESET_ON_RESUME; |
5cb7df2b | 201 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; |
8f873c1f | 202 | xhci->quirks |= XHCI_BROKEN_STREAMS; |
c877b3b2 | 203 | } |
1aa9578c | 204 | if (pdev->vendor == PCI_VENDOR_ID_RENESAS && |
6db249eb | 205 | pdev->device == 0x0015) |
1aa9578c | 206 | xhci->quirks |= XHCI_RESET_ON_RESUME; |
457a4f61 EF |
207 | if (pdev->vendor == PCI_VENDOR_ID_VIA) |
208 | xhci->quirks |= XHCI_RESET_ON_RESUME; | |
85f4e45b | 209 | |
e21eba05 HG |
210 | /* See https://bugzilla.kernel.org/show_bug.cgi?id=79511 */ |
211 | if (pdev->vendor == PCI_VENDOR_ID_VIA && | |
212 | pdev->device == 0x3432) | |
213 | xhci->quirks |= XHCI_BROKEN_STREAMS; | |
214 | ||
2391eacb HG |
215 | if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && |
216 | pdev->device == 0x1042) | |
217 | xhci->quirks |= XHCI_BROKEN_STREAMS; | |
d2f48f05 CL |
218 | if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && |
219 | pdev->device == 0x1142) | |
220 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; | |
2391eacb | 221 | |
9da5a109 JC |
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 | ||
69307ccb RQ |
226 | if (pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241) |
227 | xhci->quirks |= XHCI_LIMIT_ENDPOINT_INTERVAL_7; | |
228 | ||
85f4e45b ON |
229 | if (xhci->quirks & XHCI_RESET_ON_RESUME) |
230 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, | |
231 | "QUIRK: Resetting on resume"); | |
da3c9c4f | 232 | } |
c41136b0 | 233 | |
c3c5819a MN |
234 | #ifdef CONFIG_ACPI |
235 | static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) | |
236 | { | |
94116f81 AS |
237 | static const guid_t intel_dsm_guid = |
238 | GUID_INIT(0xac340cb7, 0xe901, 0x45bf, | |
239 | 0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23); | |
84ed9152 MW |
240 | union acpi_object *obj; |
241 | ||
94116f81 | 242 | obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), &intel_dsm_guid, 3, 1, |
84ed9152 MW |
243 | NULL); |
244 | ACPI_FREE(obj); | |
c3c5819a MN |
245 | } |
246 | #else | |
84ed9152 | 247 | static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { } |
c3c5819a MN |
248 | #endif /* CONFIG_ACPI */ |
249 | ||
da3c9c4f SAS |
250 | /* called during probe() after chip reset completes */ |
251 | static 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; | |
66d4eadd | 256 | |
b50107bb MN |
257 | xhci = hcd_to_xhci(hcd); |
258 | if (!xhci->sbrn) | |
259 | pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn); | |
260 | ||
da3c9c4f | 261 | retval = xhci_gen_setup(hcd, xhci_pci_quirks); |
66d4eadd | 262 | if (retval) |
da3c9c4f | 263 | return retval; |
006d5820 | 264 | |
da3c9c4f SAS |
265 | if (!usb_hcd_is_primary_hcd(hcd)) |
266 | return 0; | |
66d4eadd | 267 | |
66d4eadd SS |
268 | xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn); |
269 | ||
270 | /* Find any debug ports */ | |
989bad11 | 271 | return xhci_pci_reinit(xhci, pdev); |
b02d0ed6 SS |
272 | } |
273 | ||
f6ff0ac8 SS |
274 | /* |
275 | * We need to register our own PCI probe function (instead of the USB core's | |
276 | * function) in order to create a second roothub under xHCI. | |
277 | */ | |
278 | static 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; | |
bcffae77 MN |
286 | |
287 | /* Prevent runtime suspending between USB-2 and USB-3 initialization */ | |
288 | pm_runtime_get_noresume(&dev->dev); | |
289 | ||
f6ff0ac8 SS |
290 | /* Register the USB 2.0 roothub. |
291 | * FIXME: USB core must know to register the USB 2.0 roothub first. | |
292 | * This is sort of silly, because we could just set the HCD driver flags | |
293 | * to say USB 2.0, but I'm not sure what the implications would be in | |
294 | * the other parts of the HCD code. | |
295 | */ | |
296 | retval = usb_hcd_pci_probe(dev, id); | |
297 | ||
298 | if (retval) | |
bcffae77 | 299 | goto put_runtime_pm; |
f6ff0ac8 SS |
300 | |
301 | /* USB 2.0 roothub is stored in the PCI device now. */ | |
302 | hcd = dev_get_drvdata(&dev->dev); | |
303 | xhci = hcd_to_xhci(hcd); | |
304 | xhci->shared_hcd = usb_create_shared_hcd(driver, &dev->dev, | |
305 | pci_name(dev), hcd); | |
306 | if (!xhci->shared_hcd) { | |
307 | retval = -ENOMEM; | |
308 | goto dealloc_usb2_hcd; | |
309 | } | |
310 | ||
f6ff0ac8 | 311 | retval = usb_add_hcd(xhci->shared_hcd, dev->irq, |
b5dd18d8 | 312 | IRQF_SHARED); |
f6ff0ac8 SS |
313 | if (retval) |
314 | goto put_usb3_hcd; | |
315 | /* Roothub already marked as USB 3.0 speed */ | |
3b3db026 | 316 | |
8f873c1f HG |
317 | if (!(xhci->quirks & XHCI_BROKEN_STREAMS) && |
318 | HCC_MAX_PSA(xhci->hcc_params) >= 4) | |
14aec589 ON |
319 | xhci->shared_hcd->can_do_streams = 1; |
320 | ||
c3c5819a MN |
321 | if (xhci->quirks & XHCI_PME_STUCK_QUIRK) |
322 | xhci_pme_acpi_rtd3_enable(dev); | |
323 | ||
bcffae77 MN |
324 | /* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */ |
325 | pm_runtime_put_noidle(&dev->dev); | |
326 | ||
f6ff0ac8 SS |
327 | return 0; |
328 | ||
329 | put_usb3_hcd: | |
330 | usb_put_hcd(xhci->shared_hcd); | |
331 | dealloc_usb2_hcd: | |
332 | usb_hcd_pci_remove(dev); | |
bcffae77 MN |
333 | put_runtime_pm: |
334 | pm_runtime_put_noidle(&dev->dev); | |
f6ff0ac8 SS |
335 | return retval; |
336 | } | |
337 | ||
b02d0ed6 SS |
338 | static void xhci_pci_remove(struct pci_dev *dev) |
339 | { | |
340 | struct xhci_hcd *xhci; | |
341 | ||
342 | xhci = hcd_to_xhci(pci_get_drvdata(dev)); | |
98d74f9c | 343 | xhci->xhc_state |= XHCI_STATE_REMOVING; |
f6ff0ac8 SS |
344 | if (xhci->shared_hcd) { |
345 | usb_remove_hcd(xhci->shared_hcd); | |
346 | usb_put_hcd(xhci->shared_hcd); | |
347 | } | |
638298dc TI |
348 | |
349 | /* Workaround for spurious wakeups at shutdown with HSW */ | |
350 | if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) | |
351 | pci_set_power_state(dev, PCI_D3hot); | |
f1f6d9a8 MN |
352 | |
353 | usb_hcd_pci_remove(dev); | |
66d4eadd SS |
354 | } |
355 | ||
5535b1d5 | 356 | #ifdef CONFIG_PM |
2b7627b7 TB |
357 | /* |
358 | * In some Intel xHCI controllers, in order to get D3 working, | |
359 | * through a vendor specific SSIC CONFIG register at offset 0x883c, | |
360 | * SSIC PORT need to be marked as "unused" before putting xHCI | |
361 | * into D3. After D3 exit, the SSIC port need to be marked as "used". | |
362 | * Without this change, xHCI might not enter D3 state. | |
2b7627b7 | 363 | */ |
7e70cbff | 364 | static void xhci_ssic_port_unused_quirk(struct usb_hcd *hcd, bool suspend) |
2b7627b7 TB |
365 | { |
366 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
2b7627b7 TB |
367 | u32 val; |
368 | void __iomem *reg; | |
fa895377 | 369 | int i; |
2b7627b7 | 370 | |
7e70cbff LB |
371 | for (i = 0; i < SSIC_PORT_NUM; i++) { |
372 | reg = (void __iomem *) xhci->cap_regs + | |
373 | SSIC_PORT_CFG2 + | |
374 | i * SSIC_PORT_CFG2_OFFSET; | |
375 | ||
376 | /* Notify SSIC that SSIC profile programming is not done. */ | |
377 | val = readl(reg) & ~PROG_DONE; | |
378 | writel(val, reg); | |
379 | ||
380 | /* Mark SSIC port as unused(suspend) or used(resume) */ | |
381 | val = readl(reg); | |
382 | if (suspend) | |
383 | val |= SSIC_PORT_UNUSED; | |
384 | else | |
385 | val &= ~SSIC_PORT_UNUSED; | |
386 | writel(val, reg); | |
387 | ||
388 | /* Notify SSIC that SSIC profile programming is done */ | |
389 | val = readl(reg) | PROG_DONE; | |
390 | writel(val, reg); | |
391 | readl(reg); | |
2b7627b7 | 392 | } |
7e70cbff LB |
393 | } |
394 | ||
395 | /* | |
396 | * Make sure PME works on some Intel xHCI controllers by writing 1 to clear | |
397 | * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4 | |
398 | */ | |
399 | static void xhci_pme_quirk(struct usb_hcd *hcd) | |
400 | { | |
401 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
402 | void __iomem *reg; | |
403 | u32 val; | |
2b7627b7 TB |
404 | |
405 | reg = (void __iomem *) xhci->cap_regs + 0x80a4; | |
406 | val = readl(reg); | |
407 | writel(val | BIT(28), reg); | |
408 | readl(reg); | |
409 | } | |
410 | ||
5535b1d5 AX |
411 | static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) |
412 | { | |
413 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
c3897aa5 | 414 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
92149c93 | 415 | int ret; |
c3897aa5 SS |
416 | |
417 | /* | |
418 | * Systems with the TI redriver that loses port status change events | |
419 | * need to have the registers polled during D3, so avoid D3cold. | |
420 | */ | |
e1cd9727 | 421 | if (xhci->quirks & XHCI_COMP_MODE_QUIRK) |
9d26d3a8 | 422 | pci_d3cold_disable(pdev); |
5535b1d5 | 423 | |
b8cb91e0 | 424 | if (xhci->quirks & XHCI_PME_STUCK_QUIRK) |
7e70cbff LB |
425 | xhci_pme_quirk(hcd); |
426 | ||
427 | if (xhci->quirks & XHCI_SSIC_PORT_UNUSED) | |
428 | xhci_ssic_port_unused_quirk(hcd, true); | |
b8cb91e0 | 429 | |
92149c93 LB |
430 | ret = xhci_suspend(xhci, do_wakeup); |
431 | if (ret && (xhci->quirks & XHCI_SSIC_PORT_UNUSED)) | |
432 | xhci_ssic_port_unused_quirk(hcd, false); | |
433 | ||
434 | return ret; | |
5535b1d5 AX |
435 | } |
436 | ||
437 | static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) | |
438 | { | |
439 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
69e848c2 | 440 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
5535b1d5 AX |
441 | int retval = 0; |
442 | ||
69e848c2 SS |
443 | /* The BIOS on systems with the Intel Panther Point chipset may or may |
444 | * not support xHCI natively. That means that during system resume, it | |
445 | * may switch the ports back to EHCI so that users can use their | |
446 | * keyboard to select a kernel from GRUB after resume from hibernate. | |
447 | * | |
448 | * The BIOS is supposed to remember whether the OS had xHCI ports | |
449 | * enabled before resume, and switch the ports back to xHCI when the | |
450 | * BIOS/OS semaphore is written, but we all know we can't trust BIOS | |
451 | * writers. | |
452 | * | |
453 | * Unconditionally switch the ports back to xHCI after a system resume. | |
26b76798 MN |
454 | * It should not matter whether the EHCI or xHCI controller is |
455 | * resumed first. It's enough to do the switchover in xHCI because | |
456 | * USB core won't notice anything as the hub driver doesn't start | |
457 | * running again until after all the devices (including both EHCI and | |
458 | * xHCI host controllers) have been resumed. | |
69e848c2 | 459 | */ |
26b76798 MN |
460 | |
461 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) | |
462 | usb_enable_intel_xhci_ports(pdev); | |
69e848c2 | 463 | |
7e70cbff LB |
464 | if (xhci->quirks & XHCI_SSIC_PORT_UNUSED) |
465 | xhci_ssic_port_unused_quirk(hcd, false); | |
466 | ||
b8cb91e0 | 467 | if (xhci->quirks & XHCI_PME_STUCK_QUIRK) |
7e70cbff | 468 | xhci_pme_quirk(hcd); |
b8cb91e0 | 469 | |
5535b1d5 AX |
470 | retval = xhci_resume(xhci, hibernated); |
471 | return retval; | |
472 | } | |
473 | #endif /* CONFIG_PM */ | |
474 | ||
66d4eadd SS |
475 | /*-------------------------------------------------------------------------*/ |
476 | ||
477 | /* PCI driver selection metadata; PCI hotplugging uses this */ | |
478 | static const struct pci_device_id pci_ids[] = { { | |
479 | /* handle any USB 3.0 xHCI controller */ | |
480 | PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0), | |
481 | .driver_data = (unsigned long) &xhci_pci_hc_driver, | |
482 | }, | |
483 | { /* end: all zeroes */ } | |
484 | }; | |
485 | MODULE_DEVICE_TABLE(pci, pci_ids); | |
486 | ||
487 | /* pci driver glue; this is a "new style" PCI driver module */ | |
488 | static struct pci_driver xhci_pci_driver = { | |
489 | .name = (char *) hcd_name, | |
490 | .id_table = pci_ids, | |
491 | ||
f6ff0ac8 | 492 | .probe = xhci_pci_probe, |
b02d0ed6 | 493 | .remove = xhci_pci_remove, |
66d4eadd SS |
494 | /* suspend and resume implemented later */ |
495 | ||
496 | .shutdown = usb_hcd_pci_shutdown, | |
f875fdbf | 497 | #ifdef CONFIG_PM |
5535b1d5 AX |
498 | .driver = { |
499 | .pm = &usb_hcd_pci_pm_ops | |
500 | }, | |
501 | #endif | |
66d4eadd SS |
502 | }; |
503 | ||
29e409f0 | 504 | static int __init xhci_pci_init(void) |
66d4eadd | 505 | { |
cd33a321 | 506 | xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides); |
1885d9a3 AB |
507 | #ifdef CONFIG_PM |
508 | xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend; | |
509 | xhci_pci_hc_driver.pci_resume = xhci_pci_resume; | |
510 | #endif | |
66d4eadd SS |
511 | return pci_register_driver(&xhci_pci_driver); |
512 | } | |
29e409f0 | 513 | module_init(xhci_pci_init); |
66d4eadd | 514 | |
29e409f0 | 515 | static void __exit xhci_pci_exit(void) |
66d4eadd SS |
516 | { |
517 | pci_unregister_driver(&xhci_pci_driver); | |
518 | } | |
29e409f0 AB |
519 | module_exit(xhci_pci_exit); |
520 | ||
521 | MODULE_DESCRIPTION("xHCI PCI Host Controller Driver"); | |
522 | MODULE_LICENSE("GPL"); |