Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
d49d4317 | 2 | * Copyright (C) 2001-2004 by David Brownell |
53bd6a60 | 3 | * |
1da177e4 LT |
4 | * This program is free software; you can redistribute it and/or modify it |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 2 of the License, or (at your | |
7 | * option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software Foundation, | |
16 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | */ | |
18 | ||
19 | /* this file is part of ehci-hcd.c */ | |
20 | ||
21 | /*-------------------------------------------------------------------------*/ | |
22 | ||
23 | /* | |
24 | * EHCI Root Hub ... the nonsharable stuff | |
25 | * | |
26 | * Registers don't need cpu_to_le32, that happens transparently | |
27 | */ | |
28 | ||
29 | /*-------------------------------------------------------------------------*/ | |
83722bc9 | 30 | #include <linux/usb/otg.h> |
1da177e4 | 31 | |
58a97ffe AS |
32 | #define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E) |
33 | ||
aff6d18f AS |
34 | #ifdef CONFIG_PM |
35 | ||
9b790915 JW |
36 | static int persist_enabled_on_companion(struct usb_device *udev, void *unused) |
37 | { | |
38 | return !udev->maxchild && udev->persist_enabled && | |
39 | udev->bus->root_hub->speed < USB_SPEED_HIGH; | |
40 | } | |
41 | ||
383975d7 AS |
42 | /* After a power loss, ports that were owned by the companion must be |
43 | * reset so that the companion can still own them. | |
44 | */ | |
45 | static void ehci_handover_companion_ports(struct ehci_hcd *ehci) | |
46 | { | |
47 | u32 __iomem *reg; | |
48 | u32 status; | |
49 | int port; | |
50 | __le32 buf; | |
51 | struct usb_hcd *hcd = ehci_to_hcd(ehci); | |
52 | ||
53 | if (!ehci->owned_ports) | |
54 | return; | |
55 | ||
9b790915 JW |
56 | /* |
57 | * USB 1.1 devices are mostly HIDs, which don't need to persist across | |
58 | * suspends. If we ensure that none of our companion's devices have | |
59 | * persist_enabled (by looking through all USB 1.1 buses in the system), | |
60 | * we can skip this and avoid slowing resume down. Devices without | |
61 | * persist will just get reenumerated shortly after resume anyway. | |
62 | */ | |
63 | if (!usb_for_each_dev(NULL, persist_enabled_on_companion)) | |
64 | return; | |
65 | ||
c73cee71 AS |
66 | /* Make sure the ports are powered */ |
67 | port = HCS_N_PORTS(ehci->hcs_params); | |
68 | while (port--) { | |
69 | if (test_bit(port, &ehci->owned_ports)) { | |
70 | reg = &ehci->regs->port_status[port]; | |
71 | status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; | |
11a7e594 MG |
72 | if (!(status & PORT_POWER)) |
73 | ehci_port_power(ehci, port, true); | |
c73cee71 AS |
74 | } |
75 | } | |
76 | ||
383975d7 AS |
77 | /* Give the connections some time to appear */ |
78 | msleep(20); | |
79 | ||
c4f34764 | 80 | spin_lock_irq(&ehci->lock); |
383975d7 AS |
81 | port = HCS_N_PORTS(ehci->hcs_params); |
82 | while (port--) { | |
83 | if (test_bit(port, &ehci->owned_ports)) { | |
84 | reg = &ehci->regs->port_status[port]; | |
3c519b84 | 85 | status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; |
383975d7 AS |
86 | |
87 | /* Port already owned by companion? */ | |
88 | if (status & PORT_OWNER) | |
89 | clear_bit(port, &ehci->owned_ports); | |
3c519b84 AS |
90 | else if (test_bit(port, &ehci->companion_ports)) |
91 | ehci_writel(ehci, status & ~PORT_PE, reg); | |
c4f34764 AS |
92 | else { |
93 | spin_unlock_irq(&ehci->lock); | |
383975d7 AS |
94 | ehci_hub_control(hcd, SetPortFeature, |
95 | USB_PORT_FEAT_RESET, port + 1, | |
96 | NULL, 0); | |
c4f34764 AS |
97 | spin_lock_irq(&ehci->lock); |
98 | } | |
383975d7 AS |
99 | } |
100 | } | |
c4f34764 | 101 | spin_unlock_irq(&ehci->lock); |
383975d7 AS |
102 | |
103 | if (!ehci->owned_ports) | |
104 | return; | |
105 | msleep(90); /* Wait for resets to complete */ | |
106 | ||
c4f34764 | 107 | spin_lock_irq(&ehci->lock); |
383975d7 AS |
108 | port = HCS_N_PORTS(ehci->hcs_params); |
109 | while (port--) { | |
110 | if (test_bit(port, &ehci->owned_ports)) { | |
c4f34764 | 111 | spin_unlock_irq(&ehci->lock); |
383975d7 AS |
112 | ehci_hub_control(hcd, GetPortStatus, |
113 | 0, port + 1, | |
114 | (char *) &buf, sizeof(buf)); | |
c4f34764 | 115 | spin_lock_irq(&ehci->lock); |
383975d7 AS |
116 | |
117 | /* The companion should now own the port, | |
118 | * but if something went wrong the port must not | |
119 | * remain enabled. | |
120 | */ | |
121 | reg = &ehci->regs->port_status[port]; | |
122 | status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; | |
123 | if (status & PORT_OWNER) | |
124 | ehci_writel(ehci, status | PORT_CSC, reg); | |
125 | else { | |
126 | ehci_dbg(ehci, "failed handover port %d: %x\n", | |
127 | port + 1, status); | |
128 | ehci_writel(ehci, status & ~PORT_PE, reg); | |
129 | } | |
130 | } | |
131 | } | |
132 | ||
133 | ehci->owned_ports = 0; | |
c4f34764 | 134 | spin_unlock_irq(&ehci->lock); |
383975d7 AS |
135 | } |
136 | ||
c5cf9212 | 137 | static int ehci_port_change(struct ehci_hcd *ehci) |
294d95f2 MG |
138 | { |
139 | int i = HCS_N_PORTS(ehci->hcs_params); | |
140 | ||
141 | /* First check if the controller indicates a change event */ | |
142 | ||
143 | if (ehci_readl(ehci, &ehci->regs->status) & STS_PCD) | |
144 | return 1; | |
145 | ||
146 | /* | |
147 | * Not all controllers appear to update this while going from D3 to D0, | |
148 | * so check the individual port status registers as well | |
149 | */ | |
150 | ||
151 | while (i--) | |
152 | if (ehci_readl(ehci, &ehci->regs->port_status[i]) & PORT_CSC) | |
153 | return 1; | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
74db22cb | 158 | void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci, |
4147200d | 159 | bool suspending, bool do_wakeup) |
16032c4f AS |
160 | { |
161 | int port; | |
162 | u32 temp; | |
163 | ||
164 | /* If remote wakeup is enabled for the root hub but disabled | |
165 | * for the controller, we must adjust all the port wakeup flags | |
166 | * when the controller is suspended or resumed. In all other | |
167 | * cases they don't need to be changed. | |
168 | */ | |
4147200d | 169 | if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || do_wakeup) |
16032c4f AS |
170 | return; |
171 | ||
c4f34764 | 172 | spin_lock_irq(&ehci->lock); |
148fc55f | 173 | |
16032c4f | 174 | /* clear phy low-power mode before changing wakeup flags */ |
2cdcec4f | 175 | if (ehci->has_tdi_phy_lpm) { |
16032c4f AS |
176 | port = HCS_N_PORTS(ehci->hcs_params); |
177 | while (port--) { | |
a46af4eb | 178 | u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; |
16032c4f | 179 | |
16032c4f AS |
180 | temp = ehci_readl(ehci, hostpc_reg); |
181 | ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg); | |
182 | } | |
c4f34764 | 183 | spin_unlock_irq(&ehci->lock); |
16032c4f | 184 | msleep(5); |
c4f34764 | 185 | spin_lock_irq(&ehci->lock); |
16032c4f AS |
186 | } |
187 | ||
188 | port = HCS_N_PORTS(ehci->hcs_params); | |
189 | while (port--) { | |
190 | u32 __iomem *reg = &ehci->regs->port_status[port]; | |
191 | u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; | |
192 | u32 t2 = t1 & ~PORT_WAKE_BITS; | |
193 | ||
194 | /* If we are suspending the controller, clear the flags. | |
195 | * If we are resuming the controller, set the wakeup flags. | |
196 | */ | |
197 | if (!suspending) { | |
198 | if (t1 & PORT_CONNECT) | |
199 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; | |
200 | else | |
201 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; | |
202 | } | |
16032c4f AS |
203 | ehci_writel(ehci, t2, reg); |
204 | } | |
205 | ||
206 | /* enter phy low-power mode again */ | |
2cdcec4f | 207 | if (ehci->has_tdi_phy_lpm) { |
16032c4f AS |
208 | port = HCS_N_PORTS(ehci->hcs_params); |
209 | while (port--) { | |
a46af4eb | 210 | u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; |
16032c4f | 211 | |
16032c4f AS |
212 | temp = ehci_readl(ehci, hostpc_reg); |
213 | ehci_writel(ehci, temp | HOSTPC_PHCD, hostpc_reg); | |
214 | } | |
215 | } | |
ee0b9be8 AS |
216 | |
217 | /* Does the root hub have a port wakeup pending? */ | |
294d95f2 | 218 | if (!suspending && ehci_port_change(ehci)) |
ee0b9be8 | 219 | usb_hcd_resume_root_hub(ehci_to_hcd(ehci)); |
148fc55f | 220 | |
c4f34764 | 221 | spin_unlock_irq(&ehci->lock); |
16032c4f | 222 | } |
74db22cb | 223 | EXPORT_SYMBOL_GPL(ehci_adjust_port_wakeup_flags); |
16032c4f | 224 | |
0c0382e3 | 225 | static int ehci_bus_suspend (struct usb_hcd *hcd) |
1da177e4 LT |
226 | { |
227 | struct ehci_hcd *ehci = hcd_to_ehci (hcd); | |
228 | int port; | |
8c03356a | 229 | int mask; |
16032c4f | 230 | int changed; |
3e8d6d85 | 231 | bool fs_idle_delay; |
1da177e4 | 232 | |
8c774fe8 AS |
233 | ehci_dbg(ehci, "suspend root hub\n"); |
234 | ||
1da177e4 LT |
235 | if (time_before (jiffies, ehci->next_statechange)) |
236 | msleep(5); | |
237 | ||
c4f34764 AS |
238 | /* stop the schedules */ |
239 | ehci_quiesce(ehci); | |
240 | ||
1da177e4 | 241 | spin_lock_irq (&ehci->lock); |
43fe3a99 AS |
242 | if (ehci->rh_state < EHCI_RH_RUNNING) |
243 | goto done; | |
1da177e4 | 244 | |
cec3a53c AS |
245 | /* Once the controller is stopped, port resumes that are already |
246 | * in progress won't complete. Hence if remote wakeup is enabled | |
247 | * for the root hub and any ports are in the middle of a resume or | |
248 | * remote wakeup, we must fail the suspend. | |
249 | */ | |
250 | if (hcd->self.root_hub->do_remote_wakeup) { | |
a448e4dc AS |
251 | if (ehci->resuming_ports) { |
252 | spin_unlock_irq(&ehci->lock); | |
253 | ehci_dbg(ehci, "suspend failed because a port is resuming\n"); | |
254 | return -EBUSY; | |
cec3a53c AS |
255 | } |
256 | } | |
257 | ||
8c03356a AS |
258 | /* Unlike other USB host controller types, EHCI doesn't have |
259 | * any notion of "global" or bus-wide suspend. The driver has | |
260 | * to manually suspend all the active unsuspended ports, and | |
261 | * then manually resume them in the bus_resume() routine. | |
262 | */ | |
263 | ehci->bus_suspended = 0; | |
383975d7 | 264 | ehci->owned_ports = 0; |
16032c4f | 265 | changed = 0; |
3e8d6d85 | 266 | fs_idle_delay = false; |
cec3a53c | 267 | port = HCS_N_PORTS(ehci->hcs_params); |
1da177e4 LT |
268 | while (port--) { |
269 | u32 __iomem *reg = &ehci->regs->port_status [port]; | |
083522d7 | 270 | u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS; |
16032c4f | 271 | u32 t2 = t1 & ~PORT_WAKE_BITS; |
1da177e4 | 272 | |
8c03356a | 273 | /* keep track of which ports we suspend */ |
383975d7 AS |
274 | if (t1 & PORT_OWNER) |
275 | set_bit(port, &ehci->owned_ports); | |
276 | else if ((t1 & PORT_PE) && !(t1 & PORT_SUSPEND)) { | |
1da177e4 | 277 | t2 |= PORT_SUSPEND; |
8c03356a AS |
278 | set_bit(port, &ehci->bus_suspended); |
279 | } | |
280 | ||
16032c4f | 281 | /* enable remote wakeup on all ports, if told to do so */ |
331ac6b2 AD |
282 | if (hcd->self.root_hub->do_remote_wakeup) { |
283 | /* only enable appropriate wake bits, otherwise the | |
284 | * hardware can not go phy low power mode. If a race | |
285 | * condition happens here(connection change during bits | |
286 | * set), the port change detection will finally fix it. | |
287 | */ | |
16032c4f | 288 | if (t1 & PORT_CONNECT) |
331ac6b2 | 289 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; |
16032c4f | 290 | else |
331ac6b2 | 291 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; |
16032c4f | 292 | } |
1da177e4 LT |
293 | |
294 | if (t1 != t2) { | |
3e8d6d85 AS |
295 | /* |
296 | * On some controllers, Wake-On-Disconnect will | |
297 | * generate false wakeup signals until the bus | |
298 | * switches over to full-speed idle. For their | |
299 | * sake, add a delay if we need one. | |
300 | */ | |
301 | if ((t2 & PORT_WKDISC_E) && | |
302 | ehci_port_speed(ehci, t2) == | |
303 | USB_PORT_STAT_HIGH_SPEED) | |
304 | fs_idle_delay = true; | |
083522d7 | 305 | ehci_writel(ehci, t2, reg); |
16032c4f AS |
306 | changed = 1; |
307 | } | |
308 | } | |
3e8d6d85 AS |
309 | spin_unlock_irq(&ehci->lock); |
310 | ||
311 | if ((changed && ehci->has_tdi_phy_lpm) || fs_idle_delay) { | |
312 | /* | |
313 | * Wait for HCD to enter low-power mode or for the bus | |
314 | * to switch to full-speed idle. | |
315 | */ | |
316 | usleep_range(5000, 5500); | |
317 | } | |
331ac6b2 | 318 | |
2cdcec4f | 319 | if (changed && ehci->has_tdi_phy_lpm) { |
16032c4f | 320 | spin_lock_irq(&ehci->lock); |
16032c4f AS |
321 | port = HCS_N_PORTS(ehci->hcs_params); |
322 | while (port--) { | |
a46af4eb | 323 | u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port]; |
16032c4f AS |
324 | u32 t3; |
325 | ||
16032c4f AS |
326 | t3 = ehci_readl(ehci, hostpc_reg); |
327 | ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg); | |
328 | t3 = ehci_readl(ehci, hostpc_reg); | |
329 | ehci_dbg(ehci, "Port %d phy low-power mode %s\n", | |
331ac6b2 AD |
330 | port, (t3 & HOSTPC_PHCD) ? |
331 | "succeeded" : "failed"); | |
1da177e4 | 332 | } |
3e8d6d85 | 333 | spin_unlock_irq(&ehci->lock); |
1da177e4 LT |
334 | } |
335 | ||
cd930c93 AS |
336 | /* Apparently some devices need a >= 1-uframe delay here */ |
337 | if (ehci->bus_suspended) | |
338 | udelay(150); | |
339 | ||
1da177e4 LT |
340 | /* turn off now-idle HC */ |
341 | ehci_halt (ehci); | |
c4f34764 AS |
342 | |
343 | spin_lock_irq(&ehci->lock); | |
43fe3a99 AS |
344 | if (ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_POLL_DEAD)) |
345 | ehci_handle_controller_death(ehci); | |
346 | if (ehci->rh_state != EHCI_RH_RUNNING) | |
347 | goto done; | |
e8799906 | 348 | ehci->rh_state = EHCI_RH_SUSPENDED; |
1da177e4 | 349 | |
3c273a05 | 350 | end_unlink_async(ehci); |
2a40f324 | 351 | unlink_empty_async_suspended(ehci); |
9118f9eb | 352 | ehci_handle_start_intr_unlinks(ehci); |
df202255 | 353 | ehci_handle_intr_unlinks(ehci); |
55934eb3 | 354 | end_free_itds(ehci); |
cdc647a9 | 355 | |
8c03356a AS |
356 | /* allow remote wakeup */ |
357 | mask = INTR_MASK; | |
58a97ffe | 358 | if (!hcd->self.root_hub->do_remote_wakeup) |
8c03356a | 359 | mask &= ~STS_PCD; |
083522d7 BH |
360 | ehci_writel(ehci, mask, &ehci->regs->intr_enable); |
361 | ehci_readl(ehci, &ehci->regs->intr_enable); | |
8c03356a | 362 | |
43fe3a99 | 363 | done: |
1da177e4 | 364 | ehci->next_statechange = jiffies + msecs_to_jiffies(10); |
d58b4bcc AS |
365 | ehci->enabled_hrtimer_events = 0; |
366 | ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT; | |
1da177e4 | 367 | spin_unlock_irq (&ehci->lock); |
015798b2 | 368 | |
d58b4bcc | 369 | hrtimer_cancel(&ehci->hrtimer); |
1da177e4 LT |
370 | return 0; |
371 | } | |
372 | ||
373 | ||
374 | /* caller has locked the root hub, and should reset/reinit on error */ | |
0c0382e3 | 375 | static int ehci_bus_resume (struct usb_hcd *hcd) |
1da177e4 LT |
376 | { |
377 | struct ehci_hcd *ehci = hcd_to_ehci (hcd); | |
378 | u32 temp; | |
383975d7 | 379 | u32 power_okay; |
1da177e4 | 380 | int i; |
d0f2fb25 | 381 | unsigned long resume_needed = 0; |
1da177e4 LT |
382 | |
383 | if (time_before (jiffies, ehci->next_statechange)) | |
384 | msleep(5); | |
385 | spin_lock_irq (&ehci->lock); | |
43fe3a99 AS |
386 | if (!HCD_HW_ACCESSIBLE(hcd) || ehci->shutdown) |
387 | goto shutdown; | |
1da177e4 | 388 | |
ad45f1dc | 389 | if (unlikely(ehci->debug)) { |
9fa5780b | 390 | if (!dbgp_reset_prep(hcd)) |
ad45f1dc JW |
391 | ehci->debug = NULL; |
392 | else | |
9fa5780b | 393 | dbgp_external_startup(hcd); |
ad45f1dc JW |
394 | } |
395 | ||
f03c17fc DB |
396 | /* Ideally and we've got a real resume here, and no port's power |
397 | * was lost. (For PCI, that means Vaux was maintained.) But we | |
398 | * could instead be restoring a swsusp snapshot -- so that BIOS was | |
399 | * the last user of the controller, not reset/pm hardware keeping | |
400 | * state we gave to it. | |
401 | */ | |
383975d7 AS |
402 | power_okay = ehci_readl(ehci, &ehci->regs->intr_enable); |
403 | ehci_dbg(ehci, "resume root hub%s\n", | |
404 | power_okay ? "" : " after power loss"); | |
f03c17fc | 405 | |
8c03356a AS |
406 | /* at least some APM implementations will try to deliver |
407 | * IRQs right away, so delay them until we're ready. | |
408 | */ | |
083522d7 | 409 | ehci_writel(ehci, 0, &ehci->regs->intr_enable); |
8c03356a AS |
410 | |
411 | /* re-init operational registers */ | |
083522d7 BH |
412 | ehci_writel(ehci, 0, &ehci->regs->segment); |
413 | ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list); | |
414 | ehci_writel(ehci, (u32) ehci->async->qh_dma, &ehci->regs->async_next); | |
1da177e4 LT |
415 | |
416 | /* restore CMD_RUN, framelist size, and irq threshold */ | |
3d9545cc | 417 | ehci->command |= CMD_RUN; |
083522d7 | 418 | ehci_writel(ehci, ehci->command, &ehci->regs->command); |
e8799906 | 419 | ehci->rh_state = EHCI_RH_RUNNING; |
1da177e4 | 420 | |
6273f181 PC |
421 | /* |
422 | * According to Bugzilla #8190, the port status for some controllers | |
423 | * will be wrong without a delay. At their wrong status, the port | |
424 | * is enabled, but not suspended neither resumed. | |
425 | */ | |
426 | i = HCS_N_PORTS(ehci->hcs_params); | |
427 | while (i--) { | |
428 | temp = ehci_readl(ehci, &ehci->regs->port_status[i]); | |
429 | if ((temp & PORT_PE) && | |
430 | !(temp & (PORT_SUSPEND | PORT_RESUME))) { | |
431 | ehci_dbg(ehci, "Port status(0x%x) is wrong\n", temp); | |
432 | spin_unlock_irq(&ehci->lock); | |
433 | msleep(8); | |
434 | spin_lock_irq(&ehci->lock); | |
435 | break; | |
436 | } | |
437 | } | |
438 | ||
43fe3a99 AS |
439 | if (ehci->shutdown) |
440 | goto shutdown; | |
e198a314 | 441 | |
16032c4f | 442 | /* clear phy low-power mode before resume */ |
2cdcec4f | 443 | if (ehci->bus_suspended && ehci->has_tdi_phy_lpm) { |
16032c4f AS |
444 | i = HCS_N_PORTS(ehci->hcs_params); |
445 | while (i--) { | |
446 | if (test_bit(i, &ehci->bus_suspended)) { | |
a46af4eb AS |
447 | u32 __iomem *hostpc_reg = |
448 | &ehci->regs->hostpc[i]; | |
16032c4f | 449 | |
16032c4f AS |
450 | temp = ehci_readl(ehci, hostpc_reg); |
451 | ehci_writel(ehci, temp & ~HOSTPC_PHCD, | |
452 | hostpc_reg); | |
453 | } | |
454 | } | |
455 | spin_unlock_irq(&ehci->lock); | |
456 | msleep(5); | |
457 | spin_lock_irq(&ehci->lock); | |
43fe3a99 AS |
458 | if (ehci->shutdown) |
459 | goto shutdown; | |
16032c4f AS |
460 | } |
461 | ||
8c03356a | 462 | /* manually resume the ports we suspended during bus_suspend() */ |
1da177e4 LT |
463 | i = HCS_N_PORTS (ehci->hcs_params); |
464 | while (i--) { | |
083522d7 | 465 | temp = ehci_readl(ehci, &ehci->regs->port_status [i]); |
58a97ffe | 466 | temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); |
8c03356a | 467 | if (test_bit(i, &ehci->bus_suspended) && |
3a4e72cb | 468 | (temp & PORT_SUSPEND)) { |
1da177e4 | 469 | temp |= PORT_RESUME; |
d0f2fb25 | 470 | set_bit(i, &resume_needed); |
3a4e72cb | 471 | } |
083522d7 | 472 | ehci_writel(ehci, temp, &ehci->regs->port_status [i]); |
1da177e4 | 473 | } |
3a4e72cb | 474 | |
ea16328f FB |
475 | /* |
476 | * msleep for USB_RESUME_TIMEOUT ms only if code is trying to resume | |
477 | * port | |
478 | */ | |
3a4e72cb VP |
479 | if (resume_needed) { |
480 | spin_unlock_irq(&ehci->lock); | |
ea16328f | 481 | msleep(USB_RESUME_TIMEOUT); |
3a4e72cb | 482 | spin_lock_irq(&ehci->lock); |
43fe3a99 AS |
483 | if (ehci->shutdown) |
484 | goto shutdown; | |
3a4e72cb VP |
485 | } |
486 | ||
1da177e4 | 487 | i = HCS_N_PORTS (ehci->hcs_params); |
1da177e4 | 488 | while (i--) { |
083522d7 | 489 | temp = ehci_readl(ehci, &ehci->regs->port_status [i]); |
d0f2fb25 | 490 | if (test_bit(i, &resume_needed)) { |
24b90814 | 491 | temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME); |
083522d7 | 492 | ehci_writel(ehci, temp, &ehci->regs->port_status [i]); |
8c03356a | 493 | } |
1da177e4 | 494 | } |
1da177e4 LT |
495 | |
496 | ehci->next_statechange = jiffies + msecs_to_jiffies(5); | |
c4f34764 AS |
497 | spin_unlock_irq(&ehci->lock); |
498 | ||
499 | ehci_handover_companion_ports(ehci); | |
1da177e4 LT |
500 | |
501 | /* Now we can safely re-enable irqs */ | |
43fe3a99 AS |
502 | spin_lock_irq(&ehci->lock); |
503 | if (ehci->shutdown) | |
504 | goto shutdown; | |
083522d7 | 505 | ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable); |
15be105b | 506 | (void) ehci_readl(ehci, &ehci->regs->intr_enable); |
43fe3a99 | 507 | spin_unlock_irq(&ehci->lock); |
1da177e4 | 508 | |
1da177e4 | 509 | return 0; |
43fe3a99 AS |
510 | |
511 | shutdown: | |
512 | spin_unlock_irq(&ehci->lock); | |
513 | return -ESHUTDOWN; | |
1da177e4 LT |
514 | } |
515 | ||
516 | #else | |
517 | ||
0c0382e3 AS |
518 | #define ehci_bus_suspend NULL |
519 | #define ehci_bus_resume NULL | |
1da177e4 LT |
520 | |
521 | #endif /* CONFIG_PM */ | |
522 | ||
57e06c11 AS |
523 | /*-------------------------------------------------------------------------*/ |
524 | ||
57e06c11 | 525 | /* |
90da096e | 526 | * Sets the owner of a port |
57e06c11 | 527 | */ |
90da096e | 528 | static void set_owner(struct ehci_hcd *ehci, int portnum, int new_owner) |
57e06c11 | 529 | { |
57e06c11 AS |
530 | u32 __iomem *status_reg; |
531 | u32 port_status; | |
90da096e | 532 | int try; |
57e06c11 | 533 | |
90da096e | 534 | status_reg = &ehci->regs->port_status[portnum]; |
57e06c11 AS |
535 | |
536 | /* | |
537 | * The controller won't set the OWNER bit if the port is | |
538 | * enabled, so this loop will sometimes require at least two | |
539 | * iterations: one to disable the port and one to set OWNER. | |
540 | */ | |
57e06c11 AS |
541 | for (try = 4; try > 0; --try) { |
542 | spin_lock_irq(&ehci->lock); | |
543 | port_status = ehci_readl(ehci, status_reg); | |
544 | if ((port_status & PORT_OWNER) == new_owner | |
545 | || (port_status & (PORT_OWNER | PORT_CONNECT)) | |
546 | == 0) | |
547 | try = 0; | |
548 | else { | |
549 | port_status ^= PORT_OWNER; | |
550 | port_status &= ~(PORT_PE | PORT_RWC_BITS); | |
551 | ehci_writel(ehci, port_status, status_reg); | |
552 | } | |
553 | spin_unlock_irq(&ehci->lock); | |
554 | if (try > 1) | |
555 | msleep(5); | |
556 | } | |
90da096e BR |
557 | } |
558 | ||
1da177e4 LT |
559 | /*-------------------------------------------------------------------------*/ |
560 | ||
561 | static int check_reset_complete ( | |
562 | struct ehci_hcd *ehci, | |
563 | int index, | |
e6316565 | 564 | u32 __iomem *status_reg, |
1da177e4 LT |
565 | int port_status |
566 | ) { | |
cd4cdc93 | 567 | if (!(port_status & PORT_CONNECT)) |
1da177e4 | 568 | return port_status; |
1da177e4 LT |
569 | |
570 | /* if reset finished and it's still not enabled -- handoff */ | |
571 | if (!(port_status & PORT_PE)) { | |
572 | ||
573 | /* with integrated TT, there's nobody to hand it to! */ | |
574 | if (ehci_is_TDI(ehci)) { | |
575 | ehci_dbg (ehci, | |
576 | "Failed to enable port %d on root hub TT\n", | |
577 | index+1); | |
578 | return port_status; | |
579 | } | |
580 | ||
581 | ehci_dbg (ehci, "port %d full speed --> companion\n", | |
582 | index + 1); | |
583 | ||
584 | // what happens if HCS_N_CC(params) == 0 ? | |
585 | port_status |= PORT_OWNER; | |
10f6524a | 586 | port_status &= ~PORT_RWC_BITS; |
e6316565 | 587 | ehci_writel(ehci, port_status, status_reg); |
1da177e4 | 588 | |
796bcae7 VB |
589 | /* ensure 440EPX ohci controller state is operational */ |
590 | if (ehci->has_amcc_usb23) | |
591 | set_ohci_hcfs(ehci, 1); | |
592 | } else { | |
0ca7eb23 PC |
593 | ehci_dbg(ehci, "port %d reset complete, port enabled\n", |
594 | index + 1); | |
796bcae7 VB |
595 | /* ensure 440EPx ohci controller state is suspended */ |
596 | if (ehci->has_amcc_usb23) | |
597 | set_ohci_hcfs(ehci, 0); | |
598 | } | |
1da177e4 LT |
599 | |
600 | return port_status; | |
601 | } | |
602 | ||
603 | /*-------------------------------------------------------------------------*/ | |
604 | ||
605 | ||
606 | /* build "status change" packet (one or two bytes) from HC registers */ | |
607 | ||
608 | static int | |
609 | ehci_hub_status_data (struct usb_hcd *hcd, char *buf) | |
610 | { | |
611 | struct ehci_hcd *ehci = hcd_to_ehci (hcd); | |
a448e4dc | 612 | u32 temp, status; |
93f1a47c | 613 | u32 mask; |
1da177e4 LT |
614 | int ports, i, retval = 1; |
615 | unsigned long flags; | |
4dd405a4 | 616 | u32 ppcd = ~0; |
1da177e4 | 617 | |
1da177e4 LT |
618 | /* init status to no-changes */ |
619 | buf [0] = 0; | |
620 | ports = HCS_N_PORTS (ehci->hcs_params); | |
621 | if (ports > 7) { | |
622 | buf [1] = 0; | |
623 | retval++; | |
624 | } | |
53bd6a60 | 625 | |
a448e4dc AS |
626 | /* Inform the core about resumes-in-progress by returning |
627 | * a non-zero value even if there are no status changes. | |
628 | */ | |
629 | status = ehci->resuming_ports; | |
630 | ||
93f1a47c DB |
631 | /* Some boards (mostly VIA?) report bogus overcurrent indications, |
632 | * causing massive log spam unless we completely ignore them. It | |
3a4fa0a2 | 633 | * may be relevant that VIA VT8235 controllers, where PORT_POWER is |
93f1a47c DB |
634 | * always set, seem to clear PORT_OCC and PORT_CSC when writing to |
635 | * PORT_POWER; that's surprising, but maybe within-spec. | |
636 | */ | |
637 | if (!ignore_oc) | |
638 | mask = PORT_CSC | PORT_PEC | PORT_OCC; | |
639 | else | |
640 | mask = PORT_CSC | PORT_PEC; | |
641 | // PORT_RESUME from hardware ~= PORT_STAT_C_SUSPEND | |
642 | ||
1da177e4 LT |
643 | /* no hub change reports (bit 0) for now (power, ...) */ |
644 | ||
645 | /* port N changes (bit N)? */ | |
646 | spin_lock_irqsave (&ehci->lock, flags); | |
5a9cdf33 AD |
647 | |
648 | /* get per-port change detect bits */ | |
649 | if (ehci->has_ppcd) | |
650 | ppcd = ehci_readl(ehci, &ehci->regs->status) >> 16; | |
651 | ||
1da177e4 | 652 | for (i = 0; i < ports; i++) { |
5a9cdf33 | 653 | /* leverage per-port change bits feature */ |
4dd405a4 AS |
654 | if (ppcd & (1 << i)) |
655 | temp = ehci_readl(ehci, &ehci->regs->port_status[i]); | |
656 | else | |
657 | temp = 0; | |
625b5c9a AS |
658 | |
659 | /* | |
660 | * Return status information even for ports with OWNER set. | |
37ebb549 | 661 | * Otherwise hub_wq wouldn't see the disconnect event when a |
625b5c9a AS |
662 | * high-speed device is switched over to the companion |
663 | * controller by the user. | |
664 | */ | |
665 | ||
eafe5b99 AS |
666 | if ((temp & mask) != 0 || test_bit(i, &ehci->port_c_suspend) |
667 | || (ehci->reset_done[i] && time_after_eq( | |
668 | jiffies, ehci->reset_done[i]))) { | |
1da177e4 LT |
669 | if (i < 7) |
670 | buf [0] |= 1 << (i + 1); | |
671 | else | |
672 | buf [1] |= 1 << (i - 7); | |
673 | status = STS_PCD; | |
674 | } | |
675 | } | |
ee74290b AS |
676 | |
677 | /* If a resume is in progress, make sure it can finish */ | |
678 | if (ehci->resuming_ports) | |
679 | mod_timer(&hcd->rh_timer, jiffies + msecs_to_jiffies(25)); | |
680 | ||
1da177e4 LT |
681 | spin_unlock_irqrestore (&ehci->lock, flags); |
682 | return status ? retval : 0; | |
683 | } | |
684 | ||
685 | /*-------------------------------------------------------------------------*/ | |
686 | ||
687 | static void | |
688 | ehci_hub_descriptor ( | |
689 | struct ehci_hcd *ehci, | |
690 | struct usb_hub_descriptor *desc | |
691 | ) { | |
692 | int ports = HCS_N_PORTS (ehci->hcs_params); | |
693 | u16 temp; | |
694 | ||
625a4c59 | 695 | desc->bDescriptorType = USB_DT_HUB; |
1da177e4 LT |
696 | desc->bPwrOn2PwrGood = 10; /* ehci 1.0, 2.3.9 says 20ms max */ |
697 | desc->bHubContrCurrent = 0; | |
698 | ||
699 | desc->bNbrPorts = ports; | |
700 | temp = 1 + (ports / 8); | |
701 | desc->bDescLength = 7 + 2 * temp; | |
702 | ||
703 | /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */ | |
dbe79bbe JY |
704 | memset(&desc->u.hs.DeviceRemovable[0], 0, temp); |
705 | memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp); | |
1da177e4 | 706 | |
3a2359ee | 707 | temp = HUB_CHAR_INDV_PORT_OCPM; /* per-port overcurrent reporting */ |
1da177e4 | 708 | if (HCS_PPC (ehci->hcs_params)) |
3a2359ee | 709 | temp |= HUB_CHAR_INDV_PORT_LPSM; /* per-port power control */ |
56c1e26d | 710 | else |
3a2359ee | 711 | temp |= HUB_CHAR_NO_LPSM; /* no power switching */ |
1da177e4 LT |
712 | #if 0 |
713 | // re-enable when we support USB_PORT_FEAT_INDICATOR below. | |
714 | if (HCS_INDICATOR (ehci->hcs_params)) | |
3a2359ee | 715 | temp |= HUB_CHAR_PORTIND; /* per-port indicators (LEDs) */ |
1da177e4 | 716 | #endif |
fd05e720 | 717 | desc->wHubCharacteristics = cpu_to_le16(temp); |
1da177e4 LT |
718 | } |
719 | ||
9841f37a | 720 | /*-------------------------------------------------------------------------*/ |
726a85ca JP |
721 | #ifdef CONFIG_USB_HCD_TEST_MODE |
722 | ||
9841f37a MG |
723 | #define EHSET_TEST_SINGLE_STEP_SET_FEATURE 0x06 |
724 | ||
725 | static void usb_ehset_completion(struct urb *urb) | |
726 | { | |
727 | struct completion *done = urb->context; | |
728 | ||
729 | complete(done); | |
730 | } | |
731 | static int submit_single_step_set_feature( | |
732 | struct usb_hcd *hcd, | |
733 | struct urb *urb, | |
734 | int is_setup | |
735 | ); | |
736 | ||
737 | /* | |
738 | * Allocate and initialize a control URB. This request will be used by the | |
739 | * EHSET SINGLE_STEP_SET_FEATURE test in which the DATA and STATUS stages | |
740 | * of the GetDescriptor request are sent 15 seconds after the SETUP stage. | |
741 | * Return NULL if failed. | |
742 | */ | |
743 | static struct urb *request_single_step_set_feature_urb( | |
744 | struct usb_device *udev, | |
745 | void *dr, | |
746 | void *buf, | |
747 | struct completion *done | |
748 | ) { | |
749 | struct urb *urb; | |
750 | struct usb_hcd *hcd = bus_to_hcd(udev->bus); | |
751 | struct usb_host_endpoint *ep; | |
752 | ||
753 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
754 | if (!urb) | |
755 | return NULL; | |
756 | ||
757 | urb->pipe = usb_rcvctrlpipe(udev, 0); | |
758 | ep = (usb_pipein(urb->pipe) ? udev->ep_in : udev->ep_out) | |
759 | [usb_pipeendpoint(urb->pipe)]; | |
760 | if (!ep) { | |
761 | usb_free_urb(urb); | |
762 | return NULL; | |
763 | } | |
764 | ||
765 | urb->ep = ep; | |
766 | urb->dev = udev; | |
767 | urb->setup_packet = (void *)dr; | |
768 | urb->transfer_buffer = buf; | |
769 | urb->transfer_buffer_length = USB_DT_DEVICE_SIZE; | |
770 | urb->complete = usb_ehset_completion; | |
771 | urb->status = -EINPROGRESS; | |
772 | urb->actual_length = 0; | |
773 | urb->transfer_flags = URB_DIR_IN; | |
774 | usb_get_urb(urb); | |
775 | atomic_inc(&urb->use_count); | |
776 | atomic_inc(&urb->dev->urbnum); | |
777 | urb->setup_dma = dma_map_single( | |
778 | hcd->self.controller, | |
779 | urb->setup_packet, | |
780 | sizeof(struct usb_ctrlrequest), | |
781 | DMA_TO_DEVICE); | |
782 | urb->transfer_dma = dma_map_single( | |
783 | hcd->self.controller, | |
784 | urb->transfer_buffer, | |
785 | urb->transfer_buffer_length, | |
786 | DMA_FROM_DEVICE); | |
787 | urb->context = done; | |
788 | return urb; | |
789 | } | |
790 | ||
791 | static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port) | |
792 | { | |
793 | int retval = -ENOMEM; | |
794 | struct usb_ctrlrequest *dr; | |
795 | struct urb *urb; | |
796 | struct usb_device *udev; | |
797 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
798 | struct usb_device_descriptor *buf; | |
799 | DECLARE_COMPLETION_ONSTACK(done); | |
800 | ||
801 | /* Obtain udev of the rhub's child port */ | |
802 | udev = usb_hub_find_child(hcd->self.root_hub, port); | |
803 | if (!udev) { | |
804 | ehci_err(ehci, "No device attached to the RootHub\n"); | |
805 | return -ENODEV; | |
806 | } | |
807 | buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL); | |
808 | if (!buf) | |
809 | return -ENOMEM; | |
810 | ||
811 | dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); | |
812 | if (!dr) { | |
813 | kfree(buf); | |
814 | return -ENOMEM; | |
815 | } | |
816 | ||
817 | /* Fill Setup packet for GetDescriptor */ | |
818 | dr->bRequestType = USB_DIR_IN; | |
819 | dr->bRequest = USB_REQ_GET_DESCRIPTOR; | |
820 | dr->wValue = cpu_to_le16(USB_DT_DEVICE << 8); | |
821 | dr->wIndex = 0; | |
822 | dr->wLength = cpu_to_le16(USB_DT_DEVICE_SIZE); | |
823 | urb = request_single_step_set_feature_urb(udev, dr, buf, &done); | |
824 | if (!urb) | |
825 | goto cleanup; | |
826 | ||
827 | /* Submit just the SETUP stage */ | |
828 | retval = submit_single_step_set_feature(hcd, urb, 1); | |
829 | if (retval) | |
830 | goto out1; | |
831 | if (!wait_for_completion_timeout(&done, msecs_to_jiffies(2000))) { | |
832 | usb_kill_urb(urb); | |
833 | retval = -ETIMEDOUT; | |
834 | ehci_err(ehci, "%s SETUP stage timed out on ep0\n", __func__); | |
835 | goto out1; | |
836 | } | |
837 | msleep(15 * 1000); | |
838 | ||
839 | /* Complete remaining DATA and STATUS stages using the same URB */ | |
840 | urb->status = -EINPROGRESS; | |
841 | usb_get_urb(urb); | |
842 | atomic_inc(&urb->use_count); | |
843 | atomic_inc(&urb->dev->urbnum); | |
844 | retval = submit_single_step_set_feature(hcd, urb, 0); | |
845 | if (!retval && !wait_for_completion_timeout(&done, | |
846 | msecs_to_jiffies(2000))) { | |
847 | usb_kill_urb(urb); | |
848 | retval = -ETIMEDOUT; | |
849 | ehci_err(ehci, "%s IN stage timed out on ep0\n", __func__); | |
850 | } | |
851 | out1: | |
852 | usb_free_urb(urb); | |
853 | cleanup: | |
854 | kfree(dr); | |
855 | kfree(buf); | |
856 | return retval; | |
857 | } | |
726a85ca | 858 | #endif /* CONFIG_USB_HCD_TEST_MODE */ |
1da177e4 LT |
859 | /*-------------------------------------------------------------------------*/ |
860 | ||
37769939 | 861 | int ehci_hub_control( |
1da177e4 LT |
862 | struct usb_hcd *hcd, |
863 | u16 typeReq, | |
864 | u16 wValue, | |
865 | u16 wIndex, | |
866 | char *buf, | |
867 | u16 wLength | |
868 | ) { | |
869 | struct ehci_hcd *ehci = hcd_to_ehci (hcd); | |
870 | int ports = HCS_N_PORTS (ehci->hcs_params); | |
383975d7 AS |
871 | u32 __iomem *status_reg = &ehci->regs->port_status[ |
872 | (wIndex & 0xff) - 1]; | |
a46af4eb | 873 | u32 __iomem *hostpc_reg = &ehci->regs->hostpc[(wIndex & 0xff) - 1]; |
331ac6b2 | 874 | u32 temp, temp1, status; |
1da177e4 LT |
875 | unsigned long flags; |
876 | int retval = 0; | |
f0d7f273 | 877 | unsigned selector; |
1da177e4 LT |
878 | |
879 | /* | |
880 | * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR. | |
881 | * HCS_INDICATOR may say we can change LEDs to off/amber/green. | |
882 | * (track current state ourselves) ... blink for diagnostics, | |
883 | * power, "this is the one", etc. EHCI spec supports this. | |
884 | */ | |
885 | ||
886 | spin_lock_irqsave (&ehci->lock, flags); | |
887 | switch (typeReq) { | |
888 | case ClearHubFeature: | |
889 | switch (wValue) { | |
890 | case C_HUB_LOCAL_POWER: | |
891 | case C_HUB_OVER_CURRENT: | |
892 | /* no hub-wide feature/status flags */ | |
893 | break; | |
894 | default: | |
895 | goto error; | |
896 | } | |
897 | break; | |
898 | case ClearPortFeature: | |
899 | if (!wIndex || wIndex > ports) | |
900 | goto error; | |
901 | wIndex--; | |
e6316565 | 902 | temp = ehci_readl(ehci, status_reg); |
6d5f89c7 | 903 | temp &= ~PORT_RWC_BITS; |
625b5c9a AS |
904 | |
905 | /* | |
906 | * Even if OWNER is set, so the port is owned by the | |
37ebb549 | 907 | * companion controller, hub_wq needs to be able to clear |
625b5c9a | 908 | * the port-change status bits (especially |
749da5f8 | 909 | * USB_PORT_STAT_C_CONNECTION). |
625b5c9a | 910 | */ |
1da177e4 LT |
911 | |
912 | switch (wValue) { | |
913 | case USB_PORT_FEAT_ENABLE: | |
e6316565 | 914 | ehci_writel(ehci, temp & ~PORT_PE, status_reg); |
1da177e4 LT |
915 | break; |
916 | case USB_PORT_FEAT_C_ENABLE: | |
6d5f89c7 | 917 | ehci_writel(ehci, temp | PORT_PEC, status_reg); |
1da177e4 LT |
918 | break; |
919 | case USB_PORT_FEAT_SUSPEND: | |
920 | if (temp & PORT_RESET) | |
921 | goto error; | |
f8aeb3bb DB |
922 | if (ehci->no_selective_suspend) |
923 | break; | |
83722bc9 AG |
924 | #ifdef CONFIG_USB_OTG |
925 | if ((hcd->self.otg_port == (wIndex + 1)) | |
926 | && hcd->self.b_hnp_enable) { | |
3d46e73d | 927 | otg_start_hnp(hcd->usb_phy->otg); |
83722bc9 AG |
928 | break; |
929 | } | |
930 | #endif | |
16032c4f AS |
931 | if (!(temp & PORT_SUSPEND)) |
932 | break; | |
933 | if ((temp & PORT_PE) == 0) | |
934 | goto error; | |
935 | ||
936 | /* clear phy low-power mode before resume */ | |
2cdcec4f | 937 | if (ehci->has_tdi_phy_lpm) { |
16032c4f AS |
938 | temp1 = ehci_readl(ehci, hostpc_reg); |
939 | ehci_writel(ehci, temp1 & ~HOSTPC_PHCD, | |
eab80de0 | 940 | hostpc_reg); |
16032c4f AS |
941 | spin_unlock_irqrestore(&ehci->lock, flags); |
942 | msleep(5);/* wait to leave low-power mode */ | |
943 | spin_lock_irqsave(&ehci->lock, flags); | |
1da177e4 | 944 | } |
16032c4f | 945 | /* resume signaling for 20 msec */ |
6d5f89c7 | 946 | temp &= ~PORT_WAKE_BITS; |
16032c4f AS |
947 | ehci_writel(ehci, temp | PORT_RESUME, status_reg); |
948 | ehci->reset_done[wIndex] = jiffies | |
ea16328f | 949 | + msecs_to_jiffies(USB_RESUME_TIMEOUT); |
3a20446f AS |
950 | set_bit(wIndex, &ehci->resuming_ports); |
951 | usb_hcd_start_port_resume(&hcd->self, wIndex); | |
1da177e4 LT |
952 | break; |
953 | case USB_PORT_FEAT_C_SUSPEND: | |
d1f114d1 | 954 | clear_bit(wIndex, &ehci->port_c_suspend); |
1da177e4 LT |
955 | break; |
956 | case USB_PORT_FEAT_POWER: | |
11a7e594 MG |
957 | if (HCS_PPC(ehci->hcs_params)) { |
958 | spin_unlock_irqrestore(&ehci->lock, flags); | |
959 | ehci_port_power(ehci, wIndex, false); | |
960 | spin_lock_irqsave(&ehci->lock, flags); | |
961 | } | |
1da177e4 LT |
962 | break; |
963 | case USB_PORT_FEAT_C_CONNECTION: | |
6d5f89c7 | 964 | ehci_writel(ehci, temp | PORT_CSC, status_reg); |
1da177e4 LT |
965 | break; |
966 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
6d5f89c7 | 967 | ehci_writel(ehci, temp | PORT_OCC, status_reg); |
1da177e4 LT |
968 | break; |
969 | case USB_PORT_FEAT_C_RESET: | |
970 | /* GetPortStatus clears reset */ | |
971 | break; | |
972 | default: | |
973 | goto error; | |
974 | } | |
083522d7 | 975 | ehci_readl(ehci, &ehci->regs->command); /* unblock posted write */ |
1da177e4 LT |
976 | break; |
977 | case GetHubDescriptor: | |
978 | ehci_hub_descriptor (ehci, (struct usb_hub_descriptor *) | |
979 | buf); | |
980 | break; | |
981 | case GetHubStatus: | |
982 | /* no hub-wide feature/status flags */ | |
983 | memset (buf, 0, 4); | |
984 | //cpu_to_le32s ((u32 *) buf); | |
985 | break; | |
986 | case GetPortStatus: | |
987 | if (!wIndex || wIndex > ports) | |
988 | goto error; | |
989 | wIndex--; | |
990 | status = 0; | |
e6316565 | 991 | temp = ehci_readl(ehci, status_reg); |
1da177e4 LT |
992 | |
993 | // wPortChange bits | |
994 | if (temp & PORT_CSC) | |
749da5f8 | 995 | status |= USB_PORT_STAT_C_CONNECTION << 16; |
1da177e4 | 996 | if (temp & PORT_PEC) |
749da5f8 | 997 | status |= USB_PORT_STAT_C_ENABLE << 16; |
756aa6b3 CE |
998 | |
999 | if ((temp & PORT_OCC) && !ignore_oc){ | |
749da5f8 | 1000 | status |= USB_PORT_STAT_C_OVERCURRENT << 16; |
1da177e4 | 1001 | |
756aa6b3 CE |
1002 | /* |
1003 | * Hubs should disable port power on over-current. | |
1004 | * However, not all EHCI implementations do this | |
1005 | * automatically, even if they _do_ support per-port | |
1006 | * power switching; they're allowed to just limit the | |
37ebb549 | 1007 | * current. hub_wq will turn the power back on. |
756aa6b3 | 1008 | */ |
e6604a7f CE |
1009 | if (((temp & PORT_OC) || (ehci->need_oc_pp_cycle)) |
1010 | && HCS_PPC(ehci->hcs_params)) { | |
11a7e594 MG |
1011 | spin_unlock_irqrestore(&ehci->lock, flags); |
1012 | ehci_port_power(ehci, wIndex, false); | |
1013 | spin_lock_irqsave(&ehci->lock, flags); | |
81463c1d | 1014 | temp = ehci_readl(ehci, status_reg); |
756aa6b3 CE |
1015 | } |
1016 | } | |
1017 | ||
6753f4cf AS |
1018 | /* no reset or resume pending */ |
1019 | if (!ehci->reset_done[wIndex]) { | |
629e4427 AS |
1020 | |
1021 | /* Remote Wakeup received? */ | |
6753f4cf | 1022 | if (temp & PORT_RESUME) { |
629e4427 AS |
1023 | /* resume signaling for 20 msec */ |
1024 | ehci->reset_done[wIndex] = jiffies | |
1025 | + msecs_to_jiffies(20); | |
f292e7f9 | 1026 | usb_hcd_start_port_resume(&hcd->self, wIndex); |
47a64a13 | 1027 | set_bit(wIndex, &ehci->resuming_ports); |
629e4427 AS |
1028 | /* check the port again */ |
1029 | mod_timer(&ehci_to_hcd(ehci)->rh_timer, | |
1030 | ehci->reset_done[wIndex]); | |
1031 | } | |
1da177e4 | 1032 | |
6753f4cf AS |
1033 | /* reset or resume not yet complete */ |
1034 | } else if (!time_after_eq(jiffies, ehci->reset_done[wIndex])) { | |
1035 | ; /* wait until it is complete */ | |
1036 | ||
1037 | /* resume completed */ | |
1038 | } else if (test_bit(wIndex, &ehci->resuming_ports)) { | |
1039 | clear_bit(wIndex, &ehci->suspended_ports); | |
1040 | set_bit(wIndex, &ehci->port_c_suspend); | |
1041 | ehci->reset_done[wIndex] = 0; | |
1042 | usb_hcd_end_port_resume(&hcd->self, wIndex); | |
1043 | ||
1044 | /* stop resume signaling */ | |
1045 | temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME); | |
1046 | ehci_writel(ehci, temp, status_reg); | |
1047 | clear_bit(wIndex, &ehci->resuming_ports); | |
1048 | retval = ehci_handshake(ehci, status_reg, | |
1049 | PORT_RESUME, 0, 2000 /* 2msec */); | |
1050 | if (retval != 0) { | |
1051 | ehci_err(ehci, "port %d resume error %d\n", | |
629e4427 | 1052 | wIndex + 1, retval); |
6753f4cf | 1053 | goto error; |
1da177e4 | 1054 | } |
6753f4cf | 1055 | temp = ehci_readl(ehci, status_reg); |
1da177e4 LT |
1056 | |
1057 | /* whoever resets must GetPortStatus to complete it!! */ | |
6753f4cf | 1058 | } else { |
749da5f8 | 1059 | status |= USB_PORT_STAT_C_RESET << 16; |
1da177e4 LT |
1060 | ehci->reset_done [wIndex] = 0; |
1061 | ||
1062 | /* force reset to complete */ | |
083522d7 | 1063 | ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET), |
e6316565 | 1064 | status_reg); |
c22fa3ac DB |
1065 | /* REVISIT: some hardware needs 550+ usec to clear |
1066 | * this bit; seems too long to spin routinely... | |
1067 | */ | |
2f3a6b86 | 1068 | retval = ehci_handshake(ehci, status_reg, |
6307e096 | 1069 | PORT_RESET, 0, 1000); |
1da177e4 LT |
1070 | if (retval != 0) { |
1071 | ehci_err (ehci, "port %d reset error %d\n", | |
1072 | wIndex + 1, retval); | |
1073 | goto error; | |
1074 | } | |
1075 | ||
1076 | /* see what we found out */ | |
e6316565 AS |
1077 | temp = check_reset_complete (ehci, wIndex, status_reg, |
1078 | ehci_readl(ehci, status_reg)); | |
1da177e4 LT |
1079 | } |
1080 | ||
57e06c11 AS |
1081 | /* transfer dedicated ports to the companion hc */ |
1082 | if ((temp & PORT_CONNECT) && | |
1083 | test_bit(wIndex, &ehci->companion_ports)) { | |
1084 | temp &= ~PORT_RWC_BITS; | |
1085 | temp |= PORT_OWNER; | |
1086 | ehci_writel(ehci, temp, status_reg); | |
1087 | ehci_dbg(ehci, "port %d --> companion\n", wIndex + 1); | |
1088 | temp = ehci_readl(ehci, status_reg); | |
1089 | } | |
1090 | ||
625b5c9a | 1091 | /* |
37ebb549 | 1092 | * Even if OWNER is set, there's no harm letting hub_wq |
625b5c9a AS |
1093 | * see the wPortStatus values (they should all be 0 except |
1094 | * for PORT_POWER anyway). | |
1095 | */ | |
1096 | ||
1097 | if (temp & PORT_CONNECT) { | |
749da5f8 | 1098 | status |= USB_PORT_STAT_CONNECTION; |
625b5c9a | 1099 | // status may be from integrated TT |
331ac6b2 AD |
1100 | if (ehci->has_hostpc) { |
1101 | temp1 = ehci_readl(ehci, hostpc_reg); | |
1102 | status |= ehci_port_speed(ehci, temp1); | |
1103 | } else | |
1104 | status |= ehci_port_speed(ehci, temp); | |
1da177e4 | 1105 | } |
625b5c9a | 1106 | if (temp & PORT_PE) |
749da5f8 | 1107 | status |= USB_PORT_STAT_ENABLE; |
eafe5b99 AS |
1108 | |
1109 | /* maybe the port was unsuspended without our knowledge */ | |
1110 | if (temp & (PORT_SUSPEND|PORT_RESUME)) { | |
749da5f8 | 1111 | status |= USB_PORT_STAT_SUSPEND; |
eafe5b99 AS |
1112 | } else if (test_bit(wIndex, &ehci->suspended_ports)) { |
1113 | clear_bit(wIndex, &ehci->suspended_ports); | |
a448e4dc | 1114 | clear_bit(wIndex, &ehci->resuming_ports); |
eafe5b99 AS |
1115 | ehci->reset_done[wIndex] = 0; |
1116 | if (temp & PORT_PE) | |
1117 | set_bit(wIndex, &ehci->port_c_suspend); | |
f292e7f9 | 1118 | usb_hcd_end_port_resume(&hcd->self, wIndex); |
eafe5b99 AS |
1119 | } |
1120 | ||
625b5c9a | 1121 | if (temp & PORT_OC) |
749da5f8 | 1122 | status |= USB_PORT_STAT_OVERCURRENT; |
625b5c9a | 1123 | if (temp & PORT_RESET) |
749da5f8 | 1124 | status |= USB_PORT_STAT_RESET; |
625b5c9a | 1125 | if (temp & PORT_POWER) |
749da5f8 | 1126 | status |= USB_PORT_STAT_POWER; |
d1f114d1 | 1127 | if (test_bit(wIndex, &ehci->port_c_suspend)) |
749da5f8 | 1128 | status |= USB_PORT_STAT_C_SUSPEND << 16; |
1da177e4 | 1129 | |
bbcd5cab ON |
1130 | if (status & ~0xffff) /* only if wPortChange is interesting */ |
1131 | dbg_port(ehci, "GetStatus", wIndex + 1, temp); | |
a5abdeaf | 1132 | put_unaligned_le32(status, buf); |
1da177e4 LT |
1133 | break; |
1134 | case SetHubFeature: | |
1135 | switch (wValue) { | |
1136 | case C_HUB_LOCAL_POWER: | |
1137 | case C_HUB_OVER_CURRENT: | |
1138 | /* no hub-wide feature/status flags */ | |
1139 | break; | |
1140 | default: | |
1141 | goto error; | |
1142 | } | |
1143 | break; | |
1144 | case SetPortFeature: | |
f0d7f273 DB |
1145 | selector = wIndex >> 8; |
1146 | wIndex &= 0xff; | |
8d053c79 JW |
1147 | if (unlikely(ehci->debug)) { |
1148 | /* If the debug port is active any port | |
1149 | * feature requests should get denied */ | |
1150 | if (wIndex == HCS_DEBUG_PORT(ehci->hcs_params) && | |
1151 | (readl(&ehci->debug->control) & DBGP_ENABLED)) { | |
1152 | retval = -ENODEV; | |
1153 | goto error_exit; | |
1154 | } | |
1155 | } | |
1da177e4 LT |
1156 | if (!wIndex || wIndex > ports) |
1157 | goto error; | |
1158 | wIndex--; | |
e6316565 | 1159 | temp = ehci_readl(ehci, status_reg); |
1da177e4 LT |
1160 | if (temp & PORT_OWNER) |
1161 | break; | |
1162 | ||
10f6524a | 1163 | temp &= ~PORT_RWC_BITS; |
1da177e4 LT |
1164 | switch (wValue) { |
1165 | case USB_PORT_FEAT_SUSPEND: | |
f8aeb3bb DB |
1166 | if (ehci->no_selective_suspend) |
1167 | break; | |
1da177e4 LT |
1168 | if ((temp & PORT_PE) == 0 |
1169 | || (temp & PORT_RESET) != 0) | |
1170 | goto error; | |
b9df7942 | 1171 | |
331ac6b2 AD |
1172 | /* After above check the port must be connected. |
1173 | * Set appropriate bit thus could put phy into low power | |
2cdcec4f | 1174 | * mode if we have tdi_phy_lpm feature |
331ac6b2 | 1175 | */ |
b9df7942 AD |
1176 | temp &= ~PORT_WKCONN_E; |
1177 | temp |= PORT_WKDISC_E | PORT_WKOC_E; | |
1178 | ehci_writel(ehci, temp | PORT_SUSPEND, status_reg); | |
2cdcec4f | 1179 | if (ehci->has_tdi_phy_lpm) { |
b9df7942 | 1180 | spin_unlock_irqrestore(&ehci->lock, flags); |
331ac6b2 | 1181 | msleep(5);/* 5ms for HCD enter low pwr mode */ |
b9df7942 | 1182 | spin_lock_irqsave(&ehci->lock, flags); |
331ac6b2 AD |
1183 | temp1 = ehci_readl(ehci, hostpc_reg); |
1184 | ehci_writel(ehci, temp1 | HOSTPC_PHCD, | |
1185 | hostpc_reg); | |
1186 | temp1 = ehci_readl(ehci, hostpc_reg); | |
1187 | ehci_dbg(ehci, "Port%d phy low pwr mode %s\n", | |
1188 | wIndex, (temp1 & HOSTPC_PHCD) ? | |
1189 | "succeeded" : "failed"); | |
1190 | } | |
eafe5b99 | 1191 | set_bit(wIndex, &ehci->suspended_ports); |
1da177e4 LT |
1192 | break; |
1193 | case USB_PORT_FEAT_POWER: | |
11a7e594 MG |
1194 | if (HCS_PPC(ehci->hcs_params)) { |
1195 | spin_unlock_irqrestore(&ehci->lock, flags); | |
1196 | ehci_port_power(ehci, wIndex, true); | |
1197 | spin_lock_irqsave(&ehci->lock, flags); | |
1198 | } | |
1da177e4 LT |
1199 | break; |
1200 | case USB_PORT_FEAT_RESET: | |
6753f4cf | 1201 | if (temp & (PORT_SUSPEND|PORT_RESUME)) |
1da177e4 LT |
1202 | goto error; |
1203 | /* line status bits may report this as low speed, | |
1204 | * which can be fine if this root hub has a | |
1205 | * transaction translator built in. | |
1206 | */ | |
1207 | if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT | |
1208 | && !ehci_is_TDI(ehci) | |
1209 | && PORT_USB11 (temp)) { | |
1210 | ehci_dbg (ehci, | |
1211 | "port %d low speed --> companion\n", | |
1212 | wIndex + 1); | |
1213 | temp |= PORT_OWNER; | |
1214 | } else { | |
1da177e4 LT |
1215 | temp |= PORT_RESET; |
1216 | temp &= ~PORT_PE; | |
1217 | ||
1218 | /* | |
1219 | * caller must wait, then call GetPortStatus | |
1220 | * usb 2.0 spec says 50 ms resets on root | |
1221 | */ | |
1222 | ehci->reset_done [wIndex] = jiffies | |
1223 | + msecs_to_jiffies (50); | |
f8786a91 NB |
1224 | |
1225 | /* | |
1226 | * Force full-speed connect for FSL high-speed | |
1227 | * erratum; disable HS Chirp by setting PFSC bit | |
1228 | */ | |
1229 | if (ehci_has_fsl_hs_errata(ehci)) | |
1230 | temp |= (1 << PORTSC_FSL_PFSC); | |
1da177e4 | 1231 | } |
e6316565 | 1232 | ehci_writel(ehci, temp, status_reg); |
1da177e4 | 1233 | break; |
f0d7f273 DB |
1234 | |
1235 | /* For downstream facing ports (these): one hub port is put | |
1236 | * into test mode according to USB2 11.24.2.13, then the hub | |
1237 | * must be reset (which for root hub now means rmmod+modprobe, | |
1238 | * or else system reboot). See EHCI 2.3.9 and 4.14 for info | |
1239 | * about the EHCI-specific stuff. | |
1240 | */ | |
1241 | case USB_PORT_FEAT_TEST: | |
726a85ca | 1242 | #ifdef CONFIG_USB_HCD_TEST_MODE |
9841f37a MG |
1243 | if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) { |
1244 | spin_unlock_irqrestore(&ehci->lock, flags); | |
1245 | retval = ehset_single_step_set_feature(hcd, | |
5cbcc35e | 1246 | wIndex + 1); |
9841f37a MG |
1247 | spin_lock_irqsave(&ehci->lock, flags); |
1248 | break; | |
726a85ca JP |
1249 | } |
1250 | #endif | |
1251 | if (!selector || selector > 5) | |
f0d7f273 | 1252 | goto error; |
c4f34764 | 1253 | spin_unlock_irqrestore(&ehci->lock, flags); |
f0d7f273 | 1254 | ehci_quiesce(ehci); |
c4f34764 | 1255 | spin_lock_irqsave(&ehci->lock, flags); |
77636c86 BT |
1256 | |
1257 | /* Put all enabled ports into suspend */ | |
1258 | while (ports--) { | |
1259 | u32 __iomem *sreg = | |
1260 | &ehci->regs->port_status[ports]; | |
1261 | ||
1262 | temp = ehci_readl(ehci, sreg) & ~PORT_RWC_BITS; | |
1263 | if (temp & PORT_PE) | |
1264 | ehci_writel(ehci, temp | PORT_SUSPEND, | |
1265 | sreg); | |
1266 | } | |
c4f34764 AS |
1267 | |
1268 | spin_unlock_irqrestore(&ehci->lock, flags); | |
f0d7f273 | 1269 | ehci_halt(ehci); |
c4f34764 AS |
1270 | spin_lock_irqsave(&ehci->lock, flags); |
1271 | ||
77636c86 | 1272 | temp = ehci_readl(ehci, status_reg); |
f0d7f273 | 1273 | temp |= selector << 16; |
e6316565 | 1274 | ehci_writel(ehci, temp, status_reg); |
f0d7f273 DB |
1275 | break; |
1276 | ||
1da177e4 LT |
1277 | default: |
1278 | goto error; | |
1279 | } | |
083522d7 | 1280 | ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ |
1da177e4 LT |
1281 | break; |
1282 | ||
1283 | default: | |
1284 | error: | |
1285 | /* "stall" on error */ | |
1286 | retval = -EPIPE; | |
1287 | } | |
8d053c79 | 1288 | error_exit: |
1da177e4 LT |
1289 | spin_unlock_irqrestore (&ehci->lock, flags); |
1290 | return retval; | |
1291 | } | |
37769939 | 1292 | EXPORT_SYMBOL_GPL(ehci_hub_control); |
90da096e | 1293 | |
3e023203 | 1294 | static void ehci_relinquish_port(struct usb_hcd *hcd, int portnum) |
90da096e BR |
1295 | { |
1296 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
1297 | ||
1298 | if (ehci_is_TDI(ehci)) | |
1299 | return; | |
1300 | set_owner(ehci, --portnum, PORT_OWNER); | |
1301 | } | |
1302 | ||
3e023203 | 1303 | static int ehci_port_handed_over(struct usb_hcd *hcd, int portnum) |
3a31155c AS |
1304 | { |
1305 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
1306 | u32 __iomem *reg; | |
1307 | ||
1308 | if (ehci_is_TDI(ehci)) | |
1309 | return 0; | |
1310 | reg = &ehci->regs->port_status[portnum - 1]; | |
1311 | return ehci_readl(ehci, reg) & PORT_OWNER; | |
1312 | } | |
11a7e594 MG |
1313 | |
1314 | static int ehci_port_power(struct ehci_hcd *ehci, int portnum, bool enable) | |
1315 | { | |
1316 | struct usb_hcd *hcd = ehci_to_hcd(ehci); | |
1317 | u32 __iomem *status_reg = &ehci->regs->port_status[portnum]; | |
1318 | u32 temp = ehci_readl(ehci, status_reg) & ~PORT_RWC_BITS; | |
1319 | ||
1320 | if (enable) | |
1321 | ehci_writel(ehci, temp | PORT_POWER, status_reg); | |
1322 | else | |
1323 | ehci_writel(ehci, temp & ~PORT_POWER, status_reg); | |
1324 | ||
1325 | if (hcd->driver->port_power) | |
1326 | hcd->driver->port_power(hcd, portnum, enable); | |
1327 | ||
1328 | return 0; | |
1329 | } |