Commit | Line | Data |
---|---|---|
7586269c DB |
1 | /* |
2 | * This file contains code to reset and initialize USB host controllers. | |
3 | * Some of it includes work-arounds for PCI hardware and BIOS quirks. | |
4 | * It may need to run early during booting -- before USB would normally | |
5 | * initialize -- to ensure that Linux doesn't use any legacy modes. | |
6 | * | |
7 | * Copyright (c) 1999 Martin Mares <mj@ucw.cz> | |
8 | * (and others) | |
9 | */ | |
10 | ||
7586269c | 11 | #include <linux/types.h> |
51c9e6c7 | 12 | #include <linux/kconfig.h> |
7586269c DB |
13 | #include <linux/kernel.h> |
14 | #include <linux/pci.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/delay.h> | |
f940fcd8 | 17 | #include <linux/export.h> |
7586269c | 18 | #include <linux/acpi.h> |
3610ea53 | 19 | #include <linux/dmi.h> |
75e2df60 | 20 | #include "pci-quirks.h" |
66d4eadd | 21 | #include "xhci-ext-caps.h" |
7586269c DB |
22 | |
23 | ||
7586269c DB |
24 | #define UHCI_USBLEGSUP 0xc0 /* legacy support */ |
25 | #define UHCI_USBCMD 0 /* command register */ | |
7586269c | 26 | #define UHCI_USBINTR 4 /* interrupt register */ |
bb200f6e AS |
27 | #define UHCI_USBLEGSUP_RWC 0x8f00 /* the R/WC bits */ |
28 | #define UHCI_USBLEGSUP_RO 0x5040 /* R/O and reserved bits */ | |
29 | #define UHCI_USBCMD_RUN 0x0001 /* RUN/STOP bit */ | |
30 | #define UHCI_USBCMD_HCRESET 0x0002 /* Host Controller reset */ | |
31 | #define UHCI_USBCMD_EGSM 0x0008 /* Global Suspend Mode */ | |
32 | #define UHCI_USBCMD_CONFIGURE 0x0040 /* Config Flag */ | |
33 | #define UHCI_USBINTR_RESUME 0x0002 /* Resume interrupt enable */ | |
7586269c DB |
34 | |
35 | #define OHCI_CONTROL 0x04 | |
36 | #define OHCI_CMDSTATUS 0x08 | |
37 | #define OHCI_INTRSTATUS 0x0c | |
38 | #define OHCI_INTRENABLE 0x10 | |
39 | #define OHCI_INTRDISABLE 0x14 | |
6ea12a04 | 40 | #define OHCI_FMINTERVAL 0x34 |
c6187597 | 41 | #define OHCI_HCFS (3 << 6) /* hc functional state */ |
6ea12a04 | 42 | #define OHCI_HCR (1 << 0) /* host controller reset */ |
7586269c | 43 | #define OHCI_OCR (1 << 3) /* ownership change request */ |
f2cb36c1 | 44 | #define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */ |
7586269c DB |
45 | #define OHCI_CTRL_IR (1 << 8) /* interrupt routing */ |
46 | #define OHCI_INTR_OC (1 << 30) /* ownership change */ | |
47 | ||
48 | #define EHCI_HCC_PARAMS 0x08 /* extended capabilities */ | |
49 | #define EHCI_USBCMD 0 /* command register */ | |
50 | #define EHCI_USBCMD_RUN (1 << 0) /* RUN/STOP bit */ | |
51 | #define EHCI_USBSTS 4 /* status register */ | |
52 | #define EHCI_USBSTS_HALTED (1 << 12) /* HCHalted bit */ | |
53 | #define EHCI_USBINTR 8 /* interrupt register */ | |
4fe5354f | 54 | #define EHCI_CONFIGFLAG 0x40 /* configured flag register */ |
7586269c DB |
55 | #define EHCI_USBLEGSUP 0 /* legacy support register */ |
56 | #define EHCI_USBLEGSUP_BIOS (1 << 16) /* BIOS semaphore */ | |
57 | #define EHCI_USBLEGSUP_OS (1 << 24) /* OS semaphore */ | |
58 | #define EHCI_USBLEGCTLSTS 4 /* legacy control/status */ | |
59 | #define EHCI_USBLEGCTLSTS_SOOE (1 << 13) /* SMI on ownership change */ | |
60 | ||
ad93562b AX |
61 | /* AMD quirk use */ |
62 | #define AB_REG_BAR_LOW 0xe0 | |
63 | #define AB_REG_BAR_HIGH 0xe1 | |
64 | #define AB_REG_BAR_SB700 0xf0 | |
65 | #define AB_INDX(addr) ((addr) + 0x00) | |
66 | #define AB_DATA(addr) ((addr) + 0x04) | |
67 | #define AX_INDXC 0x30 | |
68 | #define AX_DATAC 0x34 | |
69 | ||
70 | #define NB_PCIE_INDX_ADDR 0xe0 | |
71 | #define NB_PCIE_INDX_DATA 0xe4 | |
72 | #define PCIE_P_CNTL 0x10040 | |
73 | #define BIF_NB 0x10002 | |
74 | #define NB_PIF0_PWRDOWN_0 0x01100012 | |
75 | #define NB_PIF0_PWRDOWN_1 0x01100013 | |
76 | ||
69e848c2 | 77 | #define USB_INTEL_XUSB2PR 0xD0 |
a96874a2 | 78 | #define USB_INTEL_USB2PRM 0xD4 |
69e848c2 | 79 | #define USB_INTEL_USB3_PSSEN 0xD8 |
a96874a2 | 80 | #define USB_INTEL_USB3PRM 0xDC |
69e848c2 | 81 | |
ad93562b AX |
82 | static struct amd_chipset_info { |
83 | struct pci_dev *nb_dev; | |
84 | struct pci_dev *smbus_dev; | |
85 | int nb_type; | |
86 | int sb_type; | |
87 | int isoc_reqs; | |
88 | int probe_count; | |
89 | int probe_result; | |
90 | } amd_chipset; | |
91 | ||
92 | static DEFINE_SPINLOCK(amd_lock); | |
93 | ||
94 | int usb_amd_find_chipset_info(void) | |
95 | { | |
96 | u8 rev = 0; | |
97 | unsigned long flags; | |
9ab7927b JR |
98 | struct amd_chipset_info info; |
99 | int ret; | |
ad93562b AX |
100 | |
101 | spin_lock_irqsave(&amd_lock, flags); | |
102 | ||
ad93562b | 103 | /* probe only once */ |
9ab7927b JR |
104 | if (amd_chipset.probe_count > 0) { |
105 | amd_chipset.probe_count++; | |
ad93562b AX |
106 | spin_unlock_irqrestore(&amd_lock, flags); |
107 | return amd_chipset.probe_result; | |
108 | } | |
9ab7927b JR |
109 | memset(&info, 0, sizeof(info)); |
110 | spin_unlock_irqrestore(&amd_lock, flags); | |
ad93562b | 111 | |
9ab7927b JR |
112 | info.smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, 0x4385, NULL); |
113 | if (info.smbus_dev) { | |
114 | rev = info.smbus_dev->revision; | |
ad93562b | 115 | if (rev >= 0x40) |
9ab7927b | 116 | info.sb_type = 1; |
ad93562b | 117 | else if (rev >= 0x30 && rev <= 0x3b) |
9ab7927b | 118 | info.sb_type = 3; |
ad93562b | 119 | } else { |
9ab7927b JR |
120 | info.smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD, |
121 | 0x780b, NULL); | |
122 | if (!info.smbus_dev) { | |
123 | ret = 0; | |
124 | goto commit; | |
ad93562b | 125 | } |
9ab7927b JR |
126 | |
127 | rev = info.smbus_dev->revision; | |
ad93562b | 128 | if (rev >= 0x11 && rev <= 0x18) |
9ab7927b | 129 | info.sb_type = 2; |
ad93562b AX |
130 | } |
131 | ||
9ab7927b JR |
132 | if (info.sb_type == 0) { |
133 | if (info.smbus_dev) { | |
134 | pci_dev_put(info.smbus_dev); | |
135 | info.smbus_dev = NULL; | |
ad93562b | 136 | } |
9ab7927b JR |
137 | ret = 0; |
138 | goto commit; | |
ad93562b AX |
139 | } |
140 | ||
9ab7927b JR |
141 | info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x9601, NULL); |
142 | if (info.nb_dev) { | |
143 | info.nb_type = 1; | |
ad93562b | 144 | } else { |
9ab7927b JR |
145 | info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1510, NULL); |
146 | if (info.nb_dev) { | |
147 | info.nb_type = 2; | |
148 | } else { | |
149 | info.nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, | |
150 | 0x9600, NULL); | |
151 | if (info.nb_dev) | |
152 | info.nb_type = 3; | |
ad93562b AX |
153 | } |
154 | } | |
155 | ||
9ab7927b | 156 | ret = info.probe_result = 1; |
ad93562b AX |
157 | printk(KERN_DEBUG "QUIRK: Enable AMD PLL fix\n"); |
158 | ||
9ab7927b JR |
159 | commit: |
160 | ||
161 | spin_lock_irqsave(&amd_lock, flags); | |
162 | if (amd_chipset.probe_count > 0) { | |
163 | /* race - someone else was faster - drop devices */ | |
164 | ||
165 | /* Mark that we where here */ | |
166 | amd_chipset.probe_count++; | |
167 | ret = amd_chipset.probe_result; | |
168 | ||
169 | spin_unlock_irqrestore(&amd_lock, flags); | |
170 | ||
171 | if (info.nb_dev) | |
172 | pci_dev_put(info.nb_dev); | |
173 | if (info.smbus_dev) | |
174 | pci_dev_put(info.smbus_dev); | |
175 | ||
176 | } else { | |
177 | /* no race - commit the result */ | |
178 | info.probe_count++; | |
179 | amd_chipset = info; | |
180 | spin_unlock_irqrestore(&amd_lock, flags); | |
181 | } | |
182 | ||
183 | return ret; | |
ad93562b AX |
184 | } |
185 | EXPORT_SYMBOL_GPL(usb_amd_find_chipset_info); | |
186 | ||
187 | /* | |
188 | * The hardware normally enables the A-link power management feature, which | |
189 | * lets the system lower the power consumption in idle states. | |
190 | * | |
191 | * This USB quirk prevents the link going into that lower power state | |
192 | * during isochronous transfers. | |
193 | * | |
194 | * Without this quirk, isochronous stream on OHCI/EHCI/xHCI controllers of | |
195 | * some AMD platforms may stutter or have breaks occasionally. | |
196 | */ | |
197 | static void usb_amd_quirk_pll(int disable) | |
198 | { | |
199 | u32 addr, addr_low, addr_high, val; | |
200 | u32 bit = disable ? 0 : 1; | |
201 | unsigned long flags; | |
202 | ||
203 | spin_lock_irqsave(&amd_lock, flags); | |
204 | ||
205 | if (disable) { | |
206 | amd_chipset.isoc_reqs++; | |
207 | if (amd_chipset.isoc_reqs > 1) { | |
208 | spin_unlock_irqrestore(&amd_lock, flags); | |
209 | return; | |
210 | } | |
211 | } else { | |
212 | amd_chipset.isoc_reqs--; | |
213 | if (amd_chipset.isoc_reqs > 0) { | |
214 | spin_unlock_irqrestore(&amd_lock, flags); | |
215 | return; | |
216 | } | |
217 | } | |
218 | ||
219 | if (amd_chipset.sb_type == 1 || amd_chipset.sb_type == 2) { | |
220 | outb_p(AB_REG_BAR_LOW, 0xcd6); | |
221 | addr_low = inb_p(0xcd7); | |
222 | outb_p(AB_REG_BAR_HIGH, 0xcd6); | |
223 | addr_high = inb_p(0xcd7); | |
224 | addr = addr_high << 8 | addr_low; | |
225 | ||
226 | outl_p(0x30, AB_INDX(addr)); | |
227 | outl_p(0x40, AB_DATA(addr)); | |
228 | outl_p(0x34, AB_INDX(addr)); | |
229 | val = inl_p(AB_DATA(addr)); | |
230 | } else if (amd_chipset.sb_type == 3) { | |
231 | pci_read_config_dword(amd_chipset.smbus_dev, | |
232 | AB_REG_BAR_SB700, &addr); | |
233 | outl(AX_INDXC, AB_INDX(addr)); | |
234 | outl(0x40, AB_DATA(addr)); | |
235 | outl(AX_DATAC, AB_INDX(addr)); | |
236 | val = inl(AB_DATA(addr)); | |
237 | } else { | |
238 | spin_unlock_irqrestore(&amd_lock, flags); | |
239 | return; | |
240 | } | |
241 | ||
242 | if (disable) { | |
243 | val &= ~0x08; | |
244 | val |= (1 << 4) | (1 << 9); | |
245 | } else { | |
246 | val |= 0x08; | |
247 | val &= ~((1 << 4) | (1 << 9)); | |
248 | } | |
249 | outl_p(val, AB_DATA(addr)); | |
250 | ||
251 | if (!amd_chipset.nb_dev) { | |
252 | spin_unlock_irqrestore(&amd_lock, flags); | |
253 | return; | |
254 | } | |
255 | ||
256 | if (amd_chipset.nb_type == 1 || amd_chipset.nb_type == 3) { | |
257 | addr = PCIE_P_CNTL; | |
258 | pci_write_config_dword(amd_chipset.nb_dev, | |
259 | NB_PCIE_INDX_ADDR, addr); | |
260 | pci_read_config_dword(amd_chipset.nb_dev, | |
261 | NB_PCIE_INDX_DATA, &val); | |
262 | ||
263 | val &= ~(1 | (1 << 3) | (1 << 4) | (1 << 9) | (1 << 12)); | |
264 | val |= bit | (bit << 3) | (bit << 12); | |
265 | val |= ((!bit) << 4) | ((!bit) << 9); | |
266 | pci_write_config_dword(amd_chipset.nb_dev, | |
267 | NB_PCIE_INDX_DATA, val); | |
268 | ||
269 | addr = BIF_NB; | |
270 | pci_write_config_dword(amd_chipset.nb_dev, | |
271 | NB_PCIE_INDX_ADDR, addr); | |
272 | pci_read_config_dword(amd_chipset.nb_dev, | |
273 | NB_PCIE_INDX_DATA, &val); | |
274 | val &= ~(1 << 8); | |
275 | val |= bit << 8; | |
276 | ||
277 | pci_write_config_dword(amd_chipset.nb_dev, | |
278 | NB_PCIE_INDX_DATA, val); | |
279 | } else if (amd_chipset.nb_type == 2) { | |
280 | addr = NB_PIF0_PWRDOWN_0; | |
281 | pci_write_config_dword(amd_chipset.nb_dev, | |
282 | NB_PCIE_INDX_ADDR, addr); | |
283 | pci_read_config_dword(amd_chipset.nb_dev, | |
284 | NB_PCIE_INDX_DATA, &val); | |
285 | if (disable) | |
286 | val &= ~(0x3f << 7); | |
287 | else | |
288 | val |= 0x3f << 7; | |
289 | ||
290 | pci_write_config_dword(amd_chipset.nb_dev, | |
291 | NB_PCIE_INDX_DATA, val); | |
292 | ||
293 | addr = NB_PIF0_PWRDOWN_1; | |
294 | pci_write_config_dword(amd_chipset.nb_dev, | |
295 | NB_PCIE_INDX_ADDR, addr); | |
296 | pci_read_config_dword(amd_chipset.nb_dev, | |
297 | NB_PCIE_INDX_DATA, &val); | |
298 | if (disable) | |
299 | val &= ~(0x3f << 7); | |
300 | else | |
301 | val |= 0x3f << 7; | |
302 | ||
303 | pci_write_config_dword(amd_chipset.nb_dev, | |
304 | NB_PCIE_INDX_DATA, val); | |
305 | } | |
306 | ||
307 | spin_unlock_irqrestore(&amd_lock, flags); | |
308 | return; | |
309 | } | |
310 | ||
311 | void usb_amd_quirk_pll_disable(void) | |
312 | { | |
313 | usb_amd_quirk_pll(1); | |
314 | } | |
315 | EXPORT_SYMBOL_GPL(usb_amd_quirk_pll_disable); | |
316 | ||
317 | void usb_amd_quirk_pll_enable(void) | |
318 | { | |
319 | usb_amd_quirk_pll(0); | |
320 | } | |
321 | EXPORT_SYMBOL_GPL(usb_amd_quirk_pll_enable); | |
322 | ||
323 | void usb_amd_dev_put(void) | |
324 | { | |
9ab7927b | 325 | struct pci_dev *nb, *smbus; |
ad93562b AX |
326 | unsigned long flags; |
327 | ||
328 | spin_lock_irqsave(&amd_lock, flags); | |
329 | ||
330 | amd_chipset.probe_count--; | |
331 | if (amd_chipset.probe_count > 0) { | |
332 | spin_unlock_irqrestore(&amd_lock, flags); | |
333 | return; | |
334 | } | |
335 | ||
9ab7927b JR |
336 | /* save them to pci_dev_put outside of spinlock */ |
337 | nb = amd_chipset.nb_dev; | |
338 | smbus = amd_chipset.smbus_dev; | |
339 | ||
340 | amd_chipset.nb_dev = NULL; | |
341 | amd_chipset.smbus_dev = NULL; | |
ad93562b AX |
342 | amd_chipset.nb_type = 0; |
343 | amd_chipset.sb_type = 0; | |
344 | amd_chipset.isoc_reqs = 0; | |
345 | amd_chipset.probe_result = 0; | |
346 | ||
347 | spin_unlock_irqrestore(&amd_lock, flags); | |
9ab7927b JR |
348 | |
349 | if (nb) | |
350 | pci_dev_put(nb); | |
351 | if (smbus) | |
352 | pci_dev_put(smbus); | |
ad93562b AX |
353 | } |
354 | EXPORT_SYMBOL_GPL(usb_amd_dev_put); | |
7586269c | 355 | |
bb200f6e AS |
356 | /* |
357 | * Make sure the controller is completely inactive, unable to | |
358 | * generate interrupts or do DMA. | |
359 | */ | |
360 | void uhci_reset_hc(struct pci_dev *pdev, unsigned long base) | |
361 | { | |
362 | /* Turn off PIRQ enable and SMI enable. (This also turns off the | |
363 | * BIOS's USB Legacy Support.) Turn off all the R/WC bits too. | |
364 | */ | |
365 | pci_write_config_word(pdev, UHCI_USBLEGSUP, UHCI_USBLEGSUP_RWC); | |
366 | ||
367 | /* Reset the HC - this will force us to get a | |
368 | * new notification of any already connected | |
369 | * ports due to the virtual disconnect that it | |
370 | * implies. | |
371 | */ | |
372 | outw(UHCI_USBCMD_HCRESET, base + UHCI_USBCMD); | |
373 | mb(); | |
374 | udelay(5); | |
375 | if (inw(base + UHCI_USBCMD) & UHCI_USBCMD_HCRESET) | |
376 | dev_warn(&pdev->dev, "HCRESET not completed yet!\n"); | |
377 | ||
378 | /* Just to be safe, disable interrupt requests and | |
379 | * make sure the controller is stopped. | |
380 | */ | |
381 | outw(0, base + UHCI_USBINTR); | |
382 | outw(0, base + UHCI_USBCMD); | |
383 | } | |
384 | EXPORT_SYMBOL_GPL(uhci_reset_hc); | |
385 | ||
386 | /* | |
387 | * Initialize a controller that was newly discovered or has just been | |
388 | * resumed. In either case we can't be sure of its previous state. | |
389 | * | |
390 | * Returns: 1 if the controller was reset, 0 otherwise. | |
391 | */ | |
392 | int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base) | |
393 | { | |
394 | u16 legsup; | |
395 | unsigned int cmd, intr; | |
396 | ||
397 | /* | |
398 | * When restarting a suspended controller, we expect all the | |
399 | * settings to be the same as we left them: | |
400 | * | |
401 | * PIRQ and SMI disabled, no R/W bits set in USBLEGSUP; | |
402 | * Controller is stopped and configured with EGSM set; | |
403 | * No interrupts enabled except possibly Resume Detect. | |
404 | * | |
405 | * If any of these conditions are violated we do a complete reset. | |
406 | */ | |
407 | pci_read_config_word(pdev, UHCI_USBLEGSUP, &legsup); | |
408 | if (legsup & ~(UHCI_USBLEGSUP_RO | UHCI_USBLEGSUP_RWC)) { | |
409 | dev_dbg(&pdev->dev, "%s: legsup = 0x%04x\n", | |
441b62c1 | 410 | __func__, legsup); |
bb200f6e AS |
411 | goto reset_needed; |
412 | } | |
413 | ||
414 | cmd = inw(base + UHCI_USBCMD); | |
415 | if ((cmd & UHCI_USBCMD_RUN) || !(cmd & UHCI_USBCMD_CONFIGURE) || | |
416 | !(cmd & UHCI_USBCMD_EGSM)) { | |
417 | dev_dbg(&pdev->dev, "%s: cmd = 0x%04x\n", | |
441b62c1 | 418 | __func__, cmd); |
bb200f6e AS |
419 | goto reset_needed; |
420 | } | |
421 | ||
422 | intr = inw(base + UHCI_USBINTR); | |
423 | if (intr & (~UHCI_USBINTR_RESUME)) { | |
424 | dev_dbg(&pdev->dev, "%s: intr = 0x%04x\n", | |
441b62c1 | 425 | __func__, intr); |
bb200f6e AS |
426 | goto reset_needed; |
427 | } | |
428 | return 0; | |
429 | ||
430 | reset_needed: | |
431 | dev_dbg(&pdev->dev, "Performing full reset\n"); | |
432 | uhci_reset_hc(pdev, base); | |
433 | return 1; | |
434 | } | |
435 | EXPORT_SYMBOL_GPL(uhci_check_and_reset_hc); | |
436 | ||
541ab4af LT |
437 | static inline int io_type_enabled(struct pci_dev *pdev, unsigned int mask) |
438 | { | |
439 | u16 cmd; | |
440 | return !pci_read_config_word(pdev, PCI_COMMAND, &cmd) && (cmd & mask); | |
441 | } | |
442 | ||
443 | #define pio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_IO) | |
444 | #define mmio_enabled(dev) io_type_enabled(dev, PCI_COMMAND_MEMORY) | |
445 | ||
41ac7b3a | 446 | static void quirk_usb_handoff_uhci(struct pci_dev *pdev) |
7586269c DB |
447 | { |
448 | unsigned long base = 0; | |
7586269c DB |
449 | int i; |
450 | ||
541ab4af LT |
451 | if (!pio_enabled(pdev)) |
452 | return; | |
453 | ||
7586269c DB |
454 | for (i = 0; i < PCI_ROM_RESOURCE; i++) |
455 | if ((pci_resource_flags(pdev, i) & IORESOURCE_IO)) { | |
456 | base = pci_resource_start(pdev, i); | |
457 | break; | |
458 | } | |
459 | ||
bb200f6e AS |
460 | if (base) |
461 | uhci_check_and_reset_hc(pdev, base); | |
7586269c DB |
462 | } |
463 | ||
41ac7b3a | 464 | static int mmio_resource_enabled(struct pci_dev *pdev, int idx) |
541ab4af LT |
465 | { |
466 | return pci_resource_start(pdev, idx) && mmio_enabled(pdev); | |
467 | } | |
468 | ||
41ac7b3a | 469 | static void quirk_usb_handoff_ohci(struct pci_dev *pdev) |
7586269c DB |
470 | { |
471 | void __iomem *base; | |
3df7169e | 472 | u32 control; |
911d9374 AS |
473 | u32 fminterval = 0; |
474 | bool no_fminterval = false; | |
c6187597 | 475 | int cnt; |
7586269c | 476 | |
541ab4af LT |
477 | if (!mmio_resource_enabled(pdev, 0)) |
478 | return; | |
479 | ||
8e8ce4b6 AV |
480 | base = pci_ioremap_bar(pdev, 0); |
481 | if (base == NULL) | |
482 | return; | |
7586269c | 483 | |
911d9374 AS |
484 | /* |
485 | * ULi M5237 OHCI controller locks the whole system when accessing | |
486 | * the OHCI_FMINTERVAL offset. | |
487 | */ | |
488 | if (pdev->vendor == PCI_VENDOR_ID_AL && pdev->device == 0x5237) | |
489 | no_fminterval = true; | |
490 | ||
3df7169e AS |
491 | control = readl(base + OHCI_CONTROL); |
492 | ||
f2cb36c1 | 493 | /* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */ |
3df7169e AS |
494 | #ifdef __hppa__ |
495 | #define OHCI_CTRL_MASK (OHCI_CTRL_RWC | OHCI_CTRL_IR) | |
496 | #else | |
497 | #define OHCI_CTRL_MASK OHCI_CTRL_RWC | |
498 | ||
f2cb36c1 | 499 | if (control & OHCI_CTRL_IR) { |
c1b45f24 | 500 | int wait_time = 500; /* arbitrary; 5 seconds */ |
7586269c DB |
501 | writel(OHCI_INTR_OC, base + OHCI_INTRENABLE); |
502 | writel(OHCI_OCR, base + OHCI_CMDSTATUS); | |
503 | while (wait_time > 0 && | |
504 | readl(base + OHCI_CONTROL) & OHCI_CTRL_IR) { | |
505 | wait_time -= 10; | |
506 | msleep(10); | |
507 | } | |
f2cb36c1 | 508 | if (wait_time <= 0) |
f0fda801 | 509 | dev_warn(&pdev->dev, "OHCI: BIOS handoff failed" |
510 | " (BIOS bug?) %08x\n", | |
a38408cd | 511 | readl(base + OHCI_CONTROL)); |
7586269c | 512 | } |
f2cb36c1 | 513 | #endif |
7586269c | 514 | |
c6187597 AS |
515 | /* disable interrupts */ |
516 | writel((u32) ~0, base + OHCI_INTRDISABLE); | |
6ea12a04 | 517 | |
c6187597 AS |
518 | /* Reset the USB bus, if the controller isn't already in RESET */ |
519 | if (control & OHCI_HCFS) { | |
520 | /* Go into RESET, preserving RWC (and possibly IR) */ | |
521 | writel(control & OHCI_CTRL_MASK, base + OHCI_CONTROL); | |
522 | readl(base + OHCI_CONTROL); | |
6ea12a04 | 523 | |
c6187597 | 524 | /* drive bus reset for at least 50 ms (7.1.7.5) */ |
6ea12a04 | 525 | msleep(50); |
c6187597 | 526 | } |
6ea12a04 | 527 | |
c6187597 | 528 | /* software reset of the controller, preserving HcFmInterval */ |
911d9374 AS |
529 | if (!no_fminterval) |
530 | fminterval = readl(base + OHCI_FMINTERVAL); | |
531 | ||
c6187597 | 532 | writel(OHCI_HCR, base + OHCI_CMDSTATUS); |
6ea12a04 | 533 | |
c6187597 AS |
534 | /* reset requires max 10 us delay */ |
535 | for (cnt = 30; cnt > 0; --cnt) { /* ... allow extra time */ | |
536 | if ((readl(base + OHCI_CMDSTATUS) & OHCI_HCR) == 0) | |
537 | break; | |
538 | udelay(1); | |
6ea12a04 | 539 | } |
911d9374 AS |
540 | |
541 | if (!no_fminterval) | |
542 | writel(fminterval, base + OHCI_FMINTERVAL); | |
3df7169e | 543 | |
c6187597 | 544 | /* Now the controller is safely in SUSPEND and nothing can wake it up */ |
7586269c DB |
545 | iounmap(base); |
546 | } | |
547 | ||
2f82686e | 548 | static const struct dmi_system_id ehci_dmi_nohandoff_table[] = { |
03c75362 AA |
549 | { |
550 | /* Pegatron Lucid (ExoPC) */ | |
551 | .matches = { | |
552 | DMI_MATCH(DMI_BOARD_NAME, "EXOPG06411"), | |
553 | DMI_MATCH(DMI_BIOS_VERSION, "Lucid-CE-133"), | |
554 | }, | |
555 | }, | |
0c42a4e8 AA |
556 | { |
557 | /* Pegatron Lucid (Ordissimo AIRIS) */ | |
558 | .matches = { | |
559 | DMI_MATCH(DMI_BOARD_NAME, "M11JB"), | |
c323dc02 | 560 | DMI_MATCH(DMI_BIOS_VERSION, "Lucid-"), |
0c42a4e8 AA |
561 | }, |
562 | }, | |
8daf8b60 AA |
563 | { |
564 | /* Pegatron Lucid (Ordissimo) */ | |
565 | .matches = { | |
566 | DMI_MATCH(DMI_BOARD_NAME, "Ordissimo"), | |
567 | DMI_MATCH(DMI_BIOS_VERSION, "Lucid-"), | |
568 | }, | |
569 | }, | |
8df5309f AS |
570 | { |
571 | /* HASEE E200 */ | |
572 | .matches = { | |
573 | DMI_MATCH(DMI_BOARD_VENDOR, "HASEE"), | |
574 | DMI_MATCH(DMI_BOARD_NAME, "E210"), | |
575 | DMI_MATCH(DMI_BIOS_VERSION, "6.00"), | |
576 | }, | |
577 | }, | |
03c75362 AA |
578 | { } |
579 | }; | |
580 | ||
41ac7b3a | 581 | static void ehci_bios_handoff(struct pci_dev *pdev, |
5c853013 AR |
582 | void __iomem *op_reg_base, |
583 | u32 cap, u8 offset) | |
584 | { | |
3610ea53 AR |
585 | int try_handoff = 1, tried_handoff = 0; |
586 | ||
8df5309f AS |
587 | /* |
588 | * The Pegatron Lucid tablet sporadically waits for 98 seconds trying | |
589 | * the handoff on its unused controller. Skip it. | |
590 | * | |
591 | * The HASEE E200 hangs when the semaphore is set (bugzilla #77021). | |
592 | */ | |
593 | if (pdev->vendor == 0x8086 && (pdev->device == 0x283a || | |
594 | pdev->device == 0x27cc)) { | |
03c75362 | 595 | if (dmi_check_system(ehci_dmi_nohandoff_table)) |
3610ea53 AR |
596 | try_handoff = 0; |
597 | } | |
5c853013 | 598 | |
3610ea53 | 599 | if (try_handoff && (cap & EHCI_USBLEGSUP_BIOS)) { |
5c853013 AR |
600 | dev_dbg(&pdev->dev, "EHCI: BIOS handoff\n"); |
601 | ||
602 | #if 0 | |
603 | /* aleksey_gorelov@phoenix.com reports that some systems need SMI forced on, | |
604 | * but that seems dubious in general (the BIOS left it off intentionally) | |
605 | * and is known to prevent some systems from booting. so we won't do this | |
606 | * unless maybe we can determine when we're on a system that needs SMI forced. | |
607 | */ | |
608 | /* BIOS workaround (?): be sure the pre-Linux code | |
609 | * receives the SMI | |
610 | */ | |
611 | pci_read_config_dword(pdev, offset + EHCI_USBLEGCTLSTS, &val); | |
612 | pci_write_config_dword(pdev, offset + EHCI_USBLEGCTLSTS, | |
613 | val | EHCI_USBLEGCTLSTS_SOOE); | |
614 | #endif | |
615 | ||
616 | /* some systems get upset if this semaphore is | |
617 | * set for any other reason than forcing a BIOS | |
618 | * handoff.. | |
619 | */ | |
620 | pci_write_config_byte(pdev, offset + 3, 1); | |
621 | } | |
622 | ||
623 | /* if boot firmware now owns EHCI, spin till it hands it over. */ | |
3610ea53 AR |
624 | if (try_handoff) { |
625 | int msec = 1000; | |
626 | while ((cap & EHCI_USBLEGSUP_BIOS) && (msec > 0)) { | |
627 | tried_handoff = 1; | |
628 | msleep(10); | |
629 | msec -= 10; | |
630 | pci_read_config_dword(pdev, offset, &cap); | |
631 | } | |
5c853013 AR |
632 | } |
633 | ||
634 | if (cap & EHCI_USBLEGSUP_BIOS) { | |
635 | /* well, possibly buggy BIOS... try to shut it down, | |
636 | * and hope nothing goes too wrong | |
637 | */ | |
3610ea53 AR |
638 | if (try_handoff) |
639 | dev_warn(&pdev->dev, "EHCI: BIOS handoff failed" | |
640 | " (BIOS bug?) %08x\n", cap); | |
5c853013 AR |
641 | pci_write_config_byte(pdev, offset + 2, 0); |
642 | } | |
643 | ||
644 | /* just in case, always disable EHCI SMIs */ | |
645 | pci_write_config_dword(pdev, offset + EHCI_USBLEGCTLSTS, 0); | |
646 | ||
647 | /* If the BIOS ever owned the controller then we can't expect | |
648 | * any power sessions to remain intact. | |
649 | */ | |
650 | if (tried_handoff) | |
651 | writel(0, op_reg_base + EHCI_CONFIGFLAG); | |
652 | } | |
653 | ||
41ac7b3a | 654 | static void quirk_usb_disable_ehci(struct pci_dev *pdev) |
7586269c | 655 | { |
7586269c | 656 | void __iomem *base, *op_reg_base; |
5c853013 | 657 | u32 hcc_params, cap, val; |
401feafa | 658 | u8 offset, cap_length; |
97ff22ee | 659 | int wait_time, count = 256/4; |
7586269c | 660 | |
541ab4af LT |
661 | if (!mmio_resource_enabled(pdev, 0)) |
662 | return; | |
663 | ||
8e8ce4b6 AV |
664 | base = pci_ioremap_bar(pdev, 0); |
665 | if (base == NULL) | |
666 | return; | |
7586269c DB |
667 | |
668 | cap_length = readb(base); | |
669 | op_reg_base = base + cap_length; | |
401feafa DB |
670 | |
671 | /* EHCI 0.96 and later may have "extended capabilities" | |
672 | * spec section 5.1 explains the bios handoff, e.g. for | |
673 | * booting from USB disk or using a usb keyboard | |
674 | */ | |
7586269c | 675 | hcc_params = readl(base + EHCI_HCC_PARAMS); |
401feafa | 676 | offset = (hcc_params >> 8) & 0xff; |
6e14bda1 | 677 | while (offset && --count) { |
401feafa | 678 | pci_read_config_dword(pdev, offset, &cap); |
401feafa | 679 | |
5c853013 AR |
680 | switch (cap & 0xff) { |
681 | case 1: | |
682 | ehci_bios_handoff(pdev, op_reg_base, cap, offset); | |
401feafa | 683 | break; |
5c853013 AR |
684 | case 0: /* Illegal reserved cap, set cap=0 so we exit */ |
685 | cap = 0; /* then fallthrough... */ | |
401feafa | 686 | default: |
f0fda801 | 687 | dev_warn(&pdev->dev, "EHCI: unrecognized capability " |
5c853013 | 688 | "%02x\n", cap & 0xff); |
7586269c | 689 | } |
401feafa | 690 | offset = (cap >> 8) & 0xff; |
7586269c | 691 | } |
401feafa | 692 | if (!count) |
f0fda801 | 693 | dev_printk(KERN_DEBUG, &pdev->dev, "EHCI: capability loop?\n"); |
7586269c DB |
694 | |
695 | /* | |
696 | * halt EHCI & disable its interrupts in any case | |
697 | */ | |
698 | val = readl(op_reg_base + EHCI_USBSTS); | |
699 | if ((val & EHCI_USBSTS_HALTED) == 0) { | |
700 | val = readl(op_reg_base + EHCI_USBCMD); | |
701 | val &= ~EHCI_USBCMD_RUN; | |
702 | writel(val, op_reg_base + EHCI_USBCMD); | |
703 | ||
704 | wait_time = 2000; | |
7586269c DB |
705 | do { |
706 | writel(0x3f, op_reg_base + EHCI_USBSTS); | |
97ff22ee AS |
707 | udelay(100); |
708 | wait_time -= 100; | |
7586269c DB |
709 | val = readl(op_reg_base + EHCI_USBSTS); |
710 | if ((val == ~(u32)0) || (val & EHCI_USBSTS_HALTED)) { | |
711 | break; | |
712 | } | |
713 | } while (wait_time > 0); | |
714 | } | |
715 | writel(0, op_reg_base + EHCI_USBINTR); | |
716 | writel(0x3f, op_reg_base + EHCI_USBSTS); | |
717 | ||
718 | iounmap(base); | |
7586269c DB |
719 | } |
720 | ||
66d4eadd SS |
721 | /* |
722 | * handshake - spin reading a register until handshake completes | |
723 | * @ptr: address of hc register to be read | |
724 | * @mask: bits to look at in result of read | |
725 | * @done: value of those bits when handshake succeeds | |
726 | * @wait_usec: timeout in microseconds | |
727 | * @delay_usec: delay in microseconds to wait between polling | |
728 | * | |
729 | * Polls a register every delay_usec microseconds. | |
730 | * Returns 0 when the mask bits have the value done. | |
731 | * Returns -ETIMEDOUT if this condition is not true after | |
732 | * wait_usec microseconds have passed. | |
733 | */ | |
734 | static int handshake(void __iomem *ptr, u32 mask, u32 done, | |
735 | int wait_usec, int delay_usec) | |
736 | { | |
737 | u32 result; | |
738 | ||
739 | do { | |
740 | result = readl(ptr); | |
741 | result &= mask; | |
742 | if (result == done) | |
743 | return 0; | |
744 | udelay(delay_usec); | |
745 | wait_usec -= delay_usec; | |
746 | } while (wait_usec > 0); | |
747 | return -ETIMEDOUT; | |
748 | } | |
749 | ||
1c12443a | 750 | #define PCI_DEVICE_ID_INTEL_LYNX_POINT_XHCI 0x8C31 |
bb1e5dd7 | 751 | #define PCI_DEVICE_ID_INTEL_LYNX_POINT_LP_XHCI 0x9C31 |
1c12443a SS |
752 | |
753 | bool usb_is_intel_ppt_switchable_xhci(struct pci_dev *pdev) | |
69e848c2 SS |
754 | { |
755 | return pdev->class == PCI_CLASS_SERIAL_USB_XHCI && | |
756 | pdev->vendor == PCI_VENDOR_ID_INTEL && | |
757 | pdev->device == PCI_DEVICE_ID_INTEL_PANTHERPOINT_XHCI; | |
758 | } | |
1c12443a SS |
759 | |
760 | /* The Intel Lynx Point chipset also has switchable ports. */ | |
761 | bool usb_is_intel_lpt_switchable_xhci(struct pci_dev *pdev) | |
762 | { | |
763 | return pdev->class == PCI_CLASS_SERIAL_USB_XHCI && | |
764 | pdev->vendor == PCI_VENDOR_ID_INTEL && | |
bb1e5dd7 RW |
765 | (pdev->device == PCI_DEVICE_ID_INTEL_LYNX_POINT_XHCI || |
766 | pdev->device == PCI_DEVICE_ID_INTEL_LYNX_POINT_LP_XHCI); | |
1c12443a SS |
767 | } |
768 | ||
769 | bool usb_is_intel_switchable_xhci(struct pci_dev *pdev) | |
770 | { | |
771 | return usb_is_intel_ppt_switchable_xhci(pdev) || | |
772 | usb_is_intel_lpt_switchable_xhci(pdev); | |
773 | } | |
69e848c2 SS |
774 | EXPORT_SYMBOL_GPL(usb_is_intel_switchable_xhci); |
775 | ||
776 | /* | |
777 | * Intel's Panther Point chipset has two host controllers (EHCI and xHCI) that | |
778 | * share some number of ports. These ports can be switched between either | |
779 | * controller. Not all of the ports under the EHCI host controller may be | |
780 | * switchable. | |
781 | * | |
782 | * The ports should be switched over to xHCI before PCI probes for any device | |
783 | * start. This avoids active devices under EHCI being disconnected during the | |
784 | * port switchover, which could cause loss of data on USB storage devices, or | |
785 | * failed boot when the root file system is on a USB mass storage device and is | |
786 | * enumerated under EHCI first. | |
787 | * | |
788 | * We write into the xHC's PCI configuration space in some Intel-specific | |
789 | * registers to switch the ports over. The USB 3.0 terminations and the USB | |
790 | * 2.0 data wires are switched separately. We want to enable the SuperSpeed | |
791 | * terminations before switching the USB 2.0 wires over, so that USB 3.0 | |
792 | * devices connect at SuperSpeed, rather than at USB 2.0 speeds. | |
793 | */ | |
794 | void usb_enable_xhci_ports(struct pci_dev *xhci_pdev) | |
795 | { | |
796 | u32 ports_available; | |
797 | ||
51c9e6c7 SS |
798 | /* Don't switchover the ports if the user hasn't compiled the xHCI |
799 | * driver. Otherwise they will see "dead" USB ports that don't power | |
800 | * the devices. | |
801 | */ | |
802 | if (!IS_ENABLED(CONFIG_USB_XHCI_HCD)) { | |
803 | dev_warn(&xhci_pdev->dev, | |
804 | "CONFIG_USB_XHCI_HCD is turned off, " | |
805 | "defaulting to EHCI.\n"); | |
806 | dev_warn(&xhci_pdev->dev, | |
807 | "USB 3.0 devices will work at USB 2.0 speeds.\n"); | |
58b2939b | 808 | usb_disable_xhci_ports(xhci_pdev); |
51c9e6c7 SS |
809 | return; |
810 | } | |
811 | ||
a96874a2 KYL |
812 | /* Read USB3PRM, the USB 3.0 Port Routing Mask Register |
813 | * Indicate the ports that can be changed from OS. | |
814 | */ | |
815 | pci_read_config_dword(xhci_pdev, USB_INTEL_USB3PRM, | |
816 | &ports_available); | |
817 | ||
818 | dev_dbg(&xhci_pdev->dev, "Configurable ports to enable SuperSpeed: 0x%x\n", | |
819 | ports_available); | |
820 | ||
69e848c2 | 821 | /* Write USB3_PSSEN, the USB 3.0 Port SuperSpeed Enable |
a96874a2 KYL |
822 | * Register, to turn on SuperSpeed terminations for the |
823 | * switchable ports. | |
69e848c2 SS |
824 | */ |
825 | pci_write_config_dword(xhci_pdev, USB_INTEL_USB3_PSSEN, | |
826 | cpu_to_le32(ports_available)); | |
827 | ||
828 | pci_read_config_dword(xhci_pdev, USB_INTEL_USB3_PSSEN, | |
829 | &ports_available); | |
830 | dev_dbg(&xhci_pdev->dev, "USB 3.0 ports that are now enabled " | |
831 | "under xHCI: 0x%x\n", ports_available); | |
832 | ||
a96874a2 KYL |
833 | /* Read XUSB2PRM, xHCI USB 2.0 Port Routing Mask Register |
834 | * Indicate the USB 2.0 ports to be controlled by the xHCI host. | |
835 | */ | |
836 | ||
837 | pci_read_config_dword(xhci_pdev, USB_INTEL_USB2PRM, | |
838 | &ports_available); | |
839 | ||
840 | dev_dbg(&xhci_pdev->dev, "Configurable USB 2.0 ports to hand over to xCHI: 0x%x\n", | |
841 | ports_available); | |
842 | ||
69e848c2 SS |
843 | /* Write XUSB2PR, the xHC USB 2.0 Port Routing Register, to |
844 | * switch the USB 2.0 power and data lines over to the xHCI | |
845 | * host. | |
846 | */ | |
847 | pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, | |
848 | cpu_to_le32(ports_available)); | |
849 | ||
850 | pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, | |
851 | &ports_available); | |
852 | dev_dbg(&xhci_pdev->dev, "USB 2.0 ports that are now switched over " | |
853 | "to xHCI: 0x%x\n", ports_available); | |
854 | } | |
855 | EXPORT_SYMBOL_GPL(usb_enable_xhci_ports); | |
856 | ||
e95829f4 SS |
857 | void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) |
858 | { | |
859 | pci_write_config_dword(xhci_pdev, USB_INTEL_USB3_PSSEN, 0x0); | |
860 | pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR, 0x0); | |
861 | } | |
862 | EXPORT_SYMBOL_GPL(usb_disable_xhci_ports); | |
863 | ||
66d4eadd SS |
864 | /** |
865 | * PCI Quirks for xHCI. | |
866 | * | |
867 | * Takes care of the handoff between the Pre-OS (i.e. BIOS) and the OS. | |
868 | * It signals to the BIOS that the OS wants control of the host controller, | |
869 | * and then waits 5 seconds for the BIOS to hand over control. | |
870 | * If we timeout, assume the BIOS is broken and take control anyway. | |
871 | */ | |
41ac7b3a | 872 | static void quirk_usb_handoff_xhci(struct pci_dev *pdev) |
66d4eadd SS |
873 | { |
874 | void __iomem *base; | |
875 | int ext_cap_offset; | |
876 | void __iomem *op_reg_base; | |
877 | u32 val; | |
878 | int timeout; | |
e955a1cd | 879 | int len = pci_resource_len(pdev, 0); |
66d4eadd SS |
880 | |
881 | if (!mmio_resource_enabled(pdev, 0)) | |
882 | return; | |
883 | ||
e955a1cd | 884 | base = ioremap_nocache(pci_resource_start(pdev, 0), len); |
66d4eadd SS |
885 | if (base == NULL) |
886 | return; | |
7586269c | 887 | |
66d4eadd SS |
888 | /* |
889 | * Find the Legacy Support Capability register - | |
890 | * this is optional for xHCI host controllers. | |
891 | */ | |
892 | ext_cap_offset = xhci_find_next_cap_offset(base, XHCI_HCC_PARAMS_OFFSET); | |
893 | do { | |
e955a1cd MG |
894 | if ((ext_cap_offset + sizeof(val)) > len) { |
895 | /* We're reading garbage from the controller */ | |
896 | dev_warn(&pdev->dev, | |
897 | "xHCI controller failing to respond"); | |
898 | return; | |
899 | } | |
900 | ||
66d4eadd SS |
901 | if (!ext_cap_offset) |
902 | /* We've reached the end of the extended capabilities */ | |
903 | goto hc_init; | |
e955a1cd | 904 | |
66d4eadd SS |
905 | val = readl(base + ext_cap_offset); |
906 | if (XHCI_EXT_CAPS_ID(val) == XHCI_EXT_CAPS_LEGACY) | |
907 | break; | |
908 | ext_cap_offset = xhci_find_next_cap_offset(base, ext_cap_offset); | |
909 | } while (1); | |
910 | ||
911 | /* If the BIOS owns the HC, signal that the OS wants it, and wait */ | |
912 | if (val & XHCI_HC_BIOS_OWNED) { | |
6768458b | 913 | writel(val | XHCI_HC_OS_OWNED, base + ext_cap_offset); |
66d4eadd SS |
914 | |
915 | /* Wait for 5 seconds with 10 microsecond polling interval */ | |
916 | timeout = handshake(base + ext_cap_offset, XHCI_HC_BIOS_OWNED, | |
917 | 0, 5000, 10); | |
918 | ||
919 | /* Assume a buggy BIOS and take HC ownership anyway */ | |
920 | if (timeout) { | |
921 | dev_warn(&pdev->dev, "xHCI BIOS handoff failed" | |
922 | " (BIOS bug ?) %08x\n", val); | |
923 | writel(val & ~XHCI_HC_BIOS_OWNED, base + ext_cap_offset); | |
924 | } | |
925 | } | |
926 | ||
95018a53 AH |
927 | val = readl(base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); |
928 | /* Mask off (turn off) any enabled SMIs */ | |
929 | val &= XHCI_LEGACY_DISABLE_SMI; | |
930 | /* Mask all SMI events bits, RW1C */ | |
931 | val |= XHCI_LEGACY_SMI_EVENTS; | |
932 | /* Disable any BIOS SMIs and clear all SMI events*/ | |
933 | writel(val, base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET); | |
66d4eadd | 934 | |
29d21457 | 935 | hc_init: |
69e848c2 SS |
936 | if (usb_is_intel_switchable_xhci(pdev)) |
937 | usb_enable_xhci_ports(pdev); | |
29d21457 | 938 | |
66d4eadd SS |
939 | op_reg_base = base + XHCI_HC_LENGTH(readl(base)); |
940 | ||
941 | /* Wait for the host controller to be ready before writing any | |
942 | * operational or runtime registers. Wait 5 seconds and no more. | |
943 | */ | |
944 | timeout = handshake(op_reg_base + XHCI_STS_OFFSET, XHCI_STS_CNR, 0, | |
945 | 5000, 10); | |
946 | /* Assume a buggy HC and start HC initialization anyway */ | |
947 | if (timeout) { | |
948 | val = readl(op_reg_base + XHCI_STS_OFFSET); | |
949 | dev_warn(&pdev->dev, | |
950 | "xHCI HW not ready after 5 sec (HC bug?) " | |
951 | "status = 0x%x\n", val); | |
952 | } | |
953 | ||
954 | /* Send the halt and disable interrupts command */ | |
955 | val = readl(op_reg_base + XHCI_CMD_OFFSET); | |
956 | val &= ~(XHCI_CMD_RUN | XHCI_IRQS); | |
957 | writel(val, op_reg_base + XHCI_CMD_OFFSET); | |
958 | ||
959 | /* Wait for the HC to halt - poll every 125 usec (one microframe). */ | |
960 | timeout = handshake(op_reg_base + XHCI_STS_OFFSET, XHCI_STS_HALT, 1, | |
961 | XHCI_MAX_HALT_USEC, 125); | |
962 | if (timeout) { | |
963 | val = readl(op_reg_base + XHCI_STS_OFFSET); | |
964 | dev_warn(&pdev->dev, | |
965 | "xHCI HW did not halt within %d usec " | |
966 | "status = 0x%x\n", XHCI_MAX_HALT_USEC, val); | |
967 | } | |
968 | ||
969 | iounmap(base); | |
970 | } | |
7586269c | 971 | |
41ac7b3a | 972 | static void quirk_usb_early_handoff(struct pci_dev *pdev) |
7586269c | 973 | { |
e4436a7c J |
974 | /* Skip Netlogic mips SoC's internal PCI USB controller. |
975 | * This device does not need/support EHCI/OHCI handoff | |
976 | */ | |
977 | if (pdev->vendor == 0x184e) /* vendor Netlogic */ | |
978 | return; | |
cab928ee SS |
979 | if (pdev->class != PCI_CLASS_SERIAL_USB_UHCI && |
980 | pdev->class != PCI_CLASS_SERIAL_USB_OHCI && | |
981 | pdev->class != PCI_CLASS_SERIAL_USB_EHCI && | |
982 | pdev->class != PCI_CLASS_SERIAL_USB_XHCI) | |
983 | return; | |
e4436a7c | 984 | |
cab928ee SS |
985 | if (pci_enable_device(pdev) < 0) { |
986 | dev_warn(&pdev->dev, "Can't enable PCI device, " | |
987 | "BIOS handoff failed.\n"); | |
988 | return; | |
989 | } | |
478a3bab | 990 | if (pdev->class == PCI_CLASS_SERIAL_USB_UHCI) |
7586269c | 991 | quirk_usb_handoff_uhci(pdev); |
478a3bab | 992 | else if (pdev->class == PCI_CLASS_SERIAL_USB_OHCI) |
7586269c | 993 | quirk_usb_handoff_ohci(pdev); |
478a3bab | 994 | else if (pdev->class == PCI_CLASS_SERIAL_USB_EHCI) |
7586269c | 995 | quirk_usb_disable_ehci(pdev); |
66d4eadd SS |
996 | else if (pdev->class == PCI_CLASS_SERIAL_USB_XHCI) |
997 | quirk_usb_handoff_xhci(pdev); | |
cab928ee | 998 | pci_disable_device(pdev); |
7586269c | 999 | } |
8474ecd9 YL |
1000 | DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID, |
1001 | PCI_CLASS_SERIAL_USB, 8, quirk_usb_early_handoff); |