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> |
66d4eadd SS |
26 | |
27 | #include "xhci.h" | |
4bdfe4c3 | 28 | #include "xhci-trace.h" |
66d4eadd | 29 | |
ac9d8fe7 SS |
30 | /* Device for a quirk */ |
31 | #define PCI_VENDOR_ID_FRESCO_LOGIC 0x1b73 | |
32 | #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK 0x1000 | |
bba18e33 | 33 | #define PCI_DEVICE_ID_FRESCO_LOGIC_FL1400 0x1400 |
ac9d8fe7 | 34 | |
c877b3b2 ML |
35 | #define PCI_VENDOR_ID_ETRON 0x1b6f |
36 | #define PCI_DEVICE_ID_ASROCK_P67 0x7023 | |
37 | ||
66d4eadd SS |
38 | static const char hcd_name[] = "xhci_hcd"; |
39 | ||
40 | /* called after powerup, by probe or system-pm "wakeup" */ | |
41 | static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev) | |
42 | { | |
43 | /* | |
44 | * TODO: Implement finding debug ports later. | |
45 | * TODO: see if there are any quirks that need to be added to handle | |
46 | * new extended capabilities. | |
47 | */ | |
48 | ||
49 | /* PCI Memory-Write-Invalidate cycle support is optional (uncommon) */ | |
50 | if (!pci_set_mwi(pdev)) | |
51 | xhci_dbg(xhci, "MWI active\n"); | |
52 | ||
53 | xhci_dbg(xhci, "Finished xhci_pci_reinit\n"); | |
54 | return 0; | |
55 | } | |
56 | ||
da3c9c4f SAS |
57 | static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) |
58 | { | |
59 | struct pci_dev *pdev = to_pci_dev(dev); | |
60 | ||
ac9d8fe7 SS |
61 | /* Look for vendor-specific quirks */ |
62 | if (pdev->vendor == PCI_VENDOR_ID_FRESCO_LOGIC && | |
bba18e33 SS |
63 | (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK || |
64 | pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_FL1400)) { | |
65 | if (pdev->device == PCI_DEVICE_ID_FRESCO_LOGIC_PDK && | |
66 | pdev->revision == 0x0) { | |
ac9d8fe7 | 67 | xhci->quirks |= XHCI_RESET_EP_QUIRK; |
4bdfe4c3 XR |
68 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
69 | "QUIRK: Fresco Logic xHC needs configure" | |
70 | " endpoint cmd after reset endpoint"); | |
f5182b41 SS |
71 | } |
72 | /* Fresco Logic confirms: all revisions of this chip do not | |
73 | * support MSI, even though some of them claim to in their PCI | |
74 | * capabilities. | |
75 | */ | |
76 | xhci->quirks |= XHCI_BROKEN_MSI; | |
4bdfe4c3 XR |
77 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
78 | "QUIRK: Fresco Logic revision %u " | |
79 | "has broken MSI implementation", | |
f5182b41 | 80 | pdev->revision); |
1530bbc6 | 81 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; |
ac9d8fe7 | 82 | } |
f5182b41 | 83 | |
0238634d SS |
84 | if (pdev->vendor == PCI_VENDOR_ID_NEC) |
85 | xhci->quirks |= XHCI_NEC_HOST; | |
ac9d8fe7 | 86 | |
7e393a83 AX |
87 | if (pdev->vendor == PCI_VENDOR_ID_AMD && xhci->hci_version == 0x96) |
88 | xhci->quirks |= XHCI_AMD_0x96_HOST; | |
89 | ||
c41136b0 AX |
90 | /* AMD PLL quirk */ |
91 | if (pdev->vendor == PCI_VENDOR_ID_AMD && usb_amd_find_chipset_info()) | |
92 | xhci->quirks |= XHCI_AMD_PLL_FIX; | |
e3567d2c SS |
93 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) { |
94 | xhci->quirks |= XHCI_LPM_SUPPORT; | |
95 | xhci->quirks |= XHCI_INTEL_HOST; | |
96 | } | |
ad808333 SS |
97 | if (pdev->vendor == PCI_VENDOR_ID_INTEL && |
98 | pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI) { | |
2cf95c18 SS |
99 | xhci->quirks |= XHCI_EP_LIMIT_QUIRK; |
100 | xhci->limit_active_eps = 64; | |
86cc558e | 101 | xhci->quirks |= XHCI_SW_BW_CHECKING; |
e95829f4 SS |
102 | /* |
103 | * PPT desktop boards DH77EB and DH77DF will power back on after | |
104 | * a few seconds of being shutdown. The fix for this is to | |
105 | * switch the ports from xHCI to EHCI on shutdown. We can't use | |
106 | * DMI information to find those particular boards (since each | |
107 | * vendor will change the board name), so we have to key off all | |
108 | * PPT chipsets. | |
109 | */ | |
110 | xhci->quirks |= XHCI_SPURIOUS_REBOOT; | |
80fab3b2 | 111 | xhci->quirks |= XHCI_AVOID_BEI; |
ad808333 | 112 | } |
c877b3b2 ML |
113 | if (pdev->vendor == PCI_VENDOR_ID_ETRON && |
114 | pdev->device == PCI_DEVICE_ID_ASROCK_P67) { | |
115 | xhci->quirks |= XHCI_RESET_ON_RESUME; | |
4bdfe4c3 XR |
116 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
117 | "QUIRK: Resetting on resume"); | |
5cb7df2b | 118 | xhci->quirks |= XHCI_TRUST_TX_LENGTH; |
c877b3b2 | 119 | } |
457a4f61 EF |
120 | if (pdev->vendor == PCI_VENDOR_ID_VIA) |
121 | xhci->quirks |= XHCI_RESET_ON_RESUME; | |
da3c9c4f | 122 | } |
c41136b0 | 123 | |
da3c9c4f SAS |
124 | /* called during probe() after chip reset completes */ |
125 | static int xhci_pci_setup(struct usb_hcd *hcd) | |
126 | { | |
127 | struct xhci_hcd *xhci; | |
128 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); | |
129 | int retval; | |
66d4eadd | 130 | |
da3c9c4f | 131 | retval = xhci_gen_setup(hcd, xhci_pci_quirks); |
66d4eadd | 132 | if (retval) |
da3c9c4f | 133 | return retval; |
006d5820 | 134 | |
da3c9c4f SAS |
135 | xhci = hcd_to_xhci(hcd); |
136 | if (!usb_hcd_is_primary_hcd(hcd)) | |
137 | return 0; | |
66d4eadd SS |
138 | |
139 | pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn); | |
140 | xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn); | |
141 | ||
142 | /* Find any debug ports */ | |
b02d0ed6 SS |
143 | retval = xhci_pci_reinit(xhci, pdev); |
144 | if (!retval) | |
145 | return retval; | |
146 | ||
b02d0ed6 SS |
147 | kfree(xhci); |
148 | return retval; | |
149 | } | |
150 | ||
f6ff0ac8 SS |
151 | /* |
152 | * We need to register our own PCI probe function (instead of the USB core's | |
153 | * function) in order to create a second roothub under xHCI. | |
154 | */ | |
155 | static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) | |
156 | { | |
157 | int retval; | |
158 | struct xhci_hcd *xhci; | |
159 | struct hc_driver *driver; | |
160 | struct usb_hcd *hcd; | |
161 | ||
162 | driver = (struct hc_driver *)id->driver_data; | |
163 | /* Register the USB 2.0 roothub. | |
164 | * FIXME: USB core must know to register the USB 2.0 roothub first. | |
165 | * This is sort of silly, because we could just set the HCD driver flags | |
166 | * to say USB 2.0, but I'm not sure what the implications would be in | |
167 | * the other parts of the HCD code. | |
168 | */ | |
169 | retval = usb_hcd_pci_probe(dev, id); | |
170 | ||
171 | if (retval) | |
172 | return retval; | |
173 | ||
174 | /* USB 2.0 roothub is stored in the PCI device now. */ | |
175 | hcd = dev_get_drvdata(&dev->dev); | |
176 | xhci = hcd_to_xhci(hcd); | |
177 | xhci->shared_hcd = usb_create_shared_hcd(driver, &dev->dev, | |
178 | pci_name(dev), hcd); | |
179 | if (!xhci->shared_hcd) { | |
180 | retval = -ENOMEM; | |
181 | goto dealloc_usb2_hcd; | |
182 | } | |
183 | ||
184 | /* Set the xHCI pointer before xhci_pci_setup() (aka hcd_driver.reset) | |
185 | * is called by usb_add_hcd(). | |
186 | */ | |
187 | *((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci; | |
188 | ||
189 | retval = usb_add_hcd(xhci->shared_hcd, dev->irq, | |
b5dd18d8 | 190 | IRQF_SHARED); |
f6ff0ac8 SS |
191 | if (retval) |
192 | goto put_usb3_hcd; | |
193 | /* Roothub already marked as USB 3.0 speed */ | |
3b3db026 SS |
194 | |
195 | /* We know the LPM timeout algorithms for this host, let the USB core | |
196 | * enable and disable LPM for devices under the USB 3.0 roothub. | |
197 | */ | |
198 | if (xhci->quirks & XHCI_LPM_SUPPORT) | |
199 | hcd_to_bus(xhci->shared_hcd)->root_hub->lpm_capable = 1; | |
200 | ||
f6ff0ac8 SS |
201 | return 0; |
202 | ||
203 | put_usb3_hcd: | |
204 | usb_put_hcd(xhci->shared_hcd); | |
205 | dealloc_usb2_hcd: | |
206 | usb_hcd_pci_remove(dev); | |
207 | return retval; | |
208 | } | |
209 | ||
b02d0ed6 SS |
210 | static void xhci_pci_remove(struct pci_dev *dev) |
211 | { | |
212 | struct xhci_hcd *xhci; | |
213 | ||
214 | xhci = hcd_to_xhci(pci_get_drvdata(dev)); | |
f6ff0ac8 SS |
215 | if (xhci->shared_hcd) { |
216 | usb_remove_hcd(xhci->shared_hcd); | |
217 | usb_put_hcd(xhci->shared_hcd); | |
218 | } | |
b02d0ed6 SS |
219 | usb_hcd_pci_remove(dev); |
220 | kfree(xhci); | |
66d4eadd SS |
221 | } |
222 | ||
5535b1d5 AX |
223 | #ifdef CONFIG_PM |
224 | static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup) | |
225 | { | |
226 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
c3897aa5 SS |
227 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
228 | ||
229 | /* | |
230 | * Systems with the TI redriver that loses port status change events | |
231 | * need to have the registers polled during D3, so avoid D3cold. | |
232 | */ | |
233 | if (xhci_compliance_mode_recovery_timer_quirk_check()) | |
234 | pdev->no_d3cold = true; | |
5535b1d5 | 235 | |
77b84767 | 236 | return xhci_suspend(xhci); |
5535b1d5 AX |
237 | } |
238 | ||
239 | static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated) | |
240 | { | |
241 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
69e848c2 | 242 | struct pci_dev *pdev = to_pci_dev(hcd->self.controller); |
5535b1d5 AX |
243 | int retval = 0; |
244 | ||
69e848c2 SS |
245 | /* The BIOS on systems with the Intel Panther Point chipset may or may |
246 | * not support xHCI natively. That means that during system resume, it | |
247 | * may switch the ports back to EHCI so that users can use their | |
248 | * keyboard to select a kernel from GRUB after resume from hibernate. | |
249 | * | |
250 | * The BIOS is supposed to remember whether the OS had xHCI ports | |
251 | * enabled before resume, and switch the ports back to xHCI when the | |
252 | * BIOS/OS semaphore is written, but we all know we can't trust BIOS | |
253 | * writers. | |
254 | * | |
255 | * Unconditionally switch the ports back to xHCI after a system resume. | |
26b76798 MN |
256 | * It should not matter whether the EHCI or xHCI controller is |
257 | * resumed first. It's enough to do the switchover in xHCI because | |
258 | * USB core won't notice anything as the hub driver doesn't start | |
259 | * running again until after all the devices (including both EHCI and | |
260 | * xHCI host controllers) have been resumed. | |
69e848c2 | 261 | */ |
26b76798 MN |
262 | |
263 | if (pdev->vendor == PCI_VENDOR_ID_INTEL) | |
264 | usb_enable_intel_xhci_ports(pdev); | |
69e848c2 | 265 | |
5535b1d5 AX |
266 | retval = xhci_resume(xhci, hibernated); |
267 | return retval; | |
268 | } | |
269 | #endif /* CONFIG_PM */ | |
270 | ||
66d4eadd SS |
271 | static const struct hc_driver xhci_pci_hc_driver = { |
272 | .description = hcd_name, | |
273 | .product_desc = "xHCI Host Controller", | |
b02d0ed6 | 274 | .hcd_priv_size = sizeof(struct xhci_hcd *), |
66d4eadd SS |
275 | |
276 | /* | |
277 | * generic hardware linkage | |
278 | */ | |
7f84eef0 | 279 | .irq = xhci_irq, |
f6ff0ac8 | 280 | .flags = HCD_MEMORY | HCD_USB3 | HCD_SHARED, |
66d4eadd SS |
281 | |
282 | /* | |
283 | * basic lifecycle operations | |
284 | */ | |
285 | .reset = xhci_pci_setup, | |
286 | .start = xhci_run, | |
5535b1d5 AX |
287 | #ifdef CONFIG_PM |
288 | .pci_suspend = xhci_pci_suspend, | |
289 | .pci_resume = xhci_pci_resume, | |
290 | #endif | |
66d4eadd SS |
291 | .stop = xhci_stop, |
292 | .shutdown = xhci_shutdown, | |
293 | ||
3ffbba95 SS |
294 | /* |
295 | * managing i/o requests and associated device resources | |
296 | */ | |
d0e96f5a SS |
297 | .urb_enqueue = xhci_urb_enqueue, |
298 | .urb_dequeue = xhci_urb_dequeue, | |
3ffbba95 SS |
299 | .alloc_dev = xhci_alloc_dev, |
300 | .free_dev = xhci_free_dev, | |
eab1cafc SS |
301 | .alloc_streams = xhci_alloc_streams, |
302 | .free_streams = xhci_free_streams, | |
f94e0186 SS |
303 | .add_endpoint = xhci_add_endpoint, |
304 | .drop_endpoint = xhci_drop_endpoint, | |
a1587d97 | 305 | .endpoint_reset = xhci_endpoint_reset, |
f94e0186 SS |
306 | .check_bandwidth = xhci_check_bandwidth, |
307 | .reset_bandwidth = xhci_reset_bandwidth, | |
3ffbba95 | 308 | .address_device = xhci_address_device, |
b356b7c7 | 309 | .update_hub_device = xhci_update_hub_device, |
f0615c45 | 310 | .reset_device = xhci_discover_or_reset_device, |
3ffbba95 | 311 | |
66d4eadd SS |
312 | /* |
313 | * scheduling support | |
314 | */ | |
315 | .get_frame_number = xhci_get_frame, | |
316 | ||
0f2a7930 SS |
317 | /* Root hub support */ |
318 | .hub_control = xhci_hub_control, | |
319 | .hub_status_data = xhci_hub_status_data, | |
9777e3ce AX |
320 | .bus_suspend = xhci_bus_suspend, |
321 | .bus_resume = xhci_bus_resume, | |
9574323c AX |
322 | /* |
323 | * call back when device connected and addressed | |
324 | */ | |
325 | .update_device = xhci_update_device, | |
65580b43 | 326 | .set_usb2_hw_lpm = xhci_set_usb2_hardware_lpm, |
3b3db026 SS |
327 | .enable_usb3_lpm_timeout = xhci_enable_usb3_lpm_timeout, |
328 | .disable_usb3_lpm_timeout = xhci_disable_usb3_lpm_timeout, | |
3f5eb141 | 329 | .find_raw_port_number = xhci_find_raw_port_number, |
66d4eadd SS |
330 | }; |
331 | ||
332 | /*-------------------------------------------------------------------------*/ | |
333 | ||
334 | /* PCI driver selection metadata; PCI hotplugging uses this */ | |
335 | static const struct pci_device_id pci_ids[] = { { | |
336 | /* handle any USB 3.0 xHCI controller */ | |
337 | PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0), | |
338 | .driver_data = (unsigned long) &xhci_pci_hc_driver, | |
339 | }, | |
340 | { /* end: all zeroes */ } | |
341 | }; | |
342 | MODULE_DEVICE_TABLE(pci, pci_ids); | |
343 | ||
344 | /* pci driver glue; this is a "new style" PCI driver module */ | |
345 | static struct pci_driver xhci_pci_driver = { | |
346 | .name = (char *) hcd_name, | |
347 | .id_table = pci_ids, | |
348 | ||
f6ff0ac8 | 349 | .probe = xhci_pci_probe, |
b02d0ed6 | 350 | .remove = xhci_pci_remove, |
66d4eadd SS |
351 | /* suspend and resume implemented later */ |
352 | ||
353 | .shutdown = usb_hcd_pci_shutdown, | |
f875fdbf | 354 | #ifdef CONFIG_PM |
5535b1d5 AX |
355 | .driver = { |
356 | .pm = &usb_hcd_pci_pm_ops | |
357 | }, | |
358 | #endif | |
66d4eadd SS |
359 | }; |
360 | ||
0cc47d54 | 361 | int __init xhci_register_pci(void) |
66d4eadd SS |
362 | { |
363 | return pci_register_driver(&xhci_pci_driver); | |
364 | } | |
365 | ||
a46c46a1 | 366 | void xhci_unregister_pci(void) |
66d4eadd SS |
367 | { |
368 | pci_unregister_driver(&xhci_pci_driver); | |
369 | } |