Commit | Line | Data |
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0f2a7930 SS |
1 | /* |
2 | * xHCI host controller driver | |
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 | ||
ddba5cd0 MN |
23 | |
24 | #include <linux/slab.h> | |
0f2a7930 SS |
25 | #include <asm/unaligned.h> |
26 | ||
27 | #include "xhci.h" | |
4bdfe4c3 | 28 | #include "xhci-trace.h" |
0f2a7930 | 29 | |
9777e3ce AX |
30 | #define PORT_WAKE_BITS (PORT_WKOC_E | PORT_WKDISC_E | PORT_WKCONN_E) |
31 | #define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \ | |
32 | PORT_RC | PORT_PLC | PORT_PE) | |
33 | ||
3415fc94 | 34 | /* USB 3.0 BOS descriptor and a capability descriptor, combined */ |
48e82361 SS |
35 | static u8 usb_bos_descriptor [] = { |
36 | USB_DT_BOS_SIZE, /* __u8 bLength, 5 bytes */ | |
37 | USB_DT_BOS, /* __u8 bDescriptorType */ | |
38 | 0x0F, 0x00, /* __le16 wTotalLength, 15 bytes */ | |
39 | 0x1, /* __u8 bNumDeviceCaps */ | |
40 | /* First device capability */ | |
41 | USB_DT_USB_SS_CAP_SIZE, /* __u8 bLength, 10 bytes */ | |
42 | USB_DT_DEVICE_CAPABILITY, /* Device Capability */ | |
43 | USB_SS_CAP_TYPE, /* bDevCapabilityType, SUPERSPEED_USB */ | |
44 | 0x00, /* bmAttributes, LTM off by default */ | |
45 | USB_5GBPS_OPERATION, 0x00, /* wSpeedsSupported, 5Gbps only */ | |
46 | 0x03, /* bFunctionalitySupport, | |
47 | USB 3.0 speed only */ | |
48 | 0x00, /* bU1DevExitLat, set later. */ | |
49 | 0x00, 0x00 /* __le16 bU2DevExitLat, set later. */ | |
50 | }; | |
51 | ||
52 | ||
4bbb0ace SS |
53 | static void xhci_common_hub_descriptor(struct xhci_hcd *xhci, |
54 | struct usb_hub_descriptor *desc, int ports) | |
0f2a7930 | 55 | { |
0f2a7930 SS |
56 | u16 temp; |
57 | ||
0f2a7930 SS |
58 | desc->bPwrOn2PwrGood = 10; /* xhci section 5.4.9 says 20ms max */ |
59 | desc->bHubContrCurrent = 0; | |
60 | ||
61 | desc->bNbrPorts = ports; | |
0f2a7930 | 62 | temp = 0; |
c8421147 | 63 | /* Bits 1:0 - support per-port power switching, or power always on */ |
0f2a7930 | 64 | if (HCC_PPC(xhci->hcc_params)) |
c8421147 | 65 | temp |= HUB_CHAR_INDV_PORT_LPSM; |
0f2a7930 | 66 | else |
c8421147 | 67 | temp |= HUB_CHAR_NO_LPSM; |
0f2a7930 SS |
68 | /* Bit 2 - root hubs are not part of a compound device */ |
69 | /* Bits 4:3 - individual port over current protection */ | |
c8421147 | 70 | temp |= HUB_CHAR_INDV_PORT_OCPM; |
0f2a7930 SS |
71 | /* Bits 6:5 - no TTs in root ports */ |
72 | /* Bit 7 - no port indicators */ | |
28ccd296 | 73 | desc->wHubCharacteristics = cpu_to_le16(temp); |
0f2a7930 SS |
74 | } |
75 | ||
4bbb0ace SS |
76 | /* Fill in the USB 2.0 roothub descriptor */ |
77 | static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, | |
78 | struct usb_hub_descriptor *desc) | |
79 | { | |
80 | int ports; | |
81 | u16 temp; | |
82 | __u8 port_removable[(USB_MAXCHILDREN + 1 + 7) / 8]; | |
83 | u32 portsc; | |
84 | unsigned int i; | |
85 | ||
86 | ports = xhci->num_usb2_ports; | |
87 | ||
88 | xhci_common_hub_descriptor(xhci, desc, ports); | |
c8421147 | 89 | desc->bDescriptorType = USB_DT_HUB; |
4bbb0ace | 90 | temp = 1 + (ports / 8); |
c8421147 | 91 | desc->bDescLength = USB_DT_HUB_NONVAR_SIZE + 2 * temp; |
4bbb0ace SS |
92 | |
93 | /* The Device Removable bits are reported on a byte granularity. | |
94 | * If the port doesn't exist within that byte, the bit is set to 0. | |
95 | */ | |
96 | memset(port_removable, 0, sizeof(port_removable)); | |
97 | for (i = 0; i < ports; i++) { | |
b0ba9720 | 98 | portsc = readl(xhci->usb2_ports[i]); |
4bbb0ace SS |
99 | /* If a device is removable, PORTSC reports a 0, same as in the |
100 | * hub descriptor DeviceRemovable bits. | |
101 | */ | |
102 | if (portsc & PORT_DEV_REMOVE) | |
103 | /* This math is hairy because bit 0 of DeviceRemovable | |
104 | * is reserved, and bit 1 is for port 1, etc. | |
105 | */ | |
106 | port_removable[(i + 1) / 8] |= 1 << ((i + 1) % 8); | |
107 | } | |
108 | ||
109 | /* ch11.h defines a hub descriptor that has room for USB_MAXCHILDREN | |
110 | * ports on it. The USB 2.0 specification says that there are two | |
111 | * variable length fields at the end of the hub descriptor: | |
112 | * DeviceRemovable and PortPwrCtrlMask. But since we can have less than | |
113 | * USB_MAXCHILDREN ports, we may need to use the DeviceRemovable array | |
114 | * to set PortPwrCtrlMask bits. PortPwrCtrlMask must always be set to | |
115 | * 0xFF, so we initialize the both arrays (DeviceRemovable and | |
116 | * PortPwrCtrlMask) to 0xFF. Then we set the DeviceRemovable for each | |
117 | * set of ports that actually exist. | |
118 | */ | |
119 | memset(desc->u.hs.DeviceRemovable, 0xff, | |
120 | sizeof(desc->u.hs.DeviceRemovable)); | |
121 | memset(desc->u.hs.PortPwrCtrlMask, 0xff, | |
122 | sizeof(desc->u.hs.PortPwrCtrlMask)); | |
123 | ||
124 | for (i = 0; i < (ports + 1 + 7) / 8; i++) | |
125 | memset(&desc->u.hs.DeviceRemovable[i], port_removable[i], | |
126 | sizeof(__u8)); | |
127 | } | |
128 | ||
129 | /* Fill in the USB 3.0 roothub descriptor */ | |
130 | static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, | |
131 | struct usb_hub_descriptor *desc) | |
132 | { | |
133 | int ports; | |
134 | u16 port_removable; | |
135 | u32 portsc; | |
136 | unsigned int i; | |
137 | ||
138 | ports = xhci->num_usb3_ports; | |
139 | xhci_common_hub_descriptor(xhci, desc, ports); | |
c8421147 AD |
140 | desc->bDescriptorType = USB_DT_SS_HUB; |
141 | desc->bDescLength = USB_DT_SS_HUB_SIZE; | |
4bbb0ace SS |
142 | |
143 | /* header decode latency should be zero for roothubs, | |
144 | * see section 4.23.5.2. | |
145 | */ | |
146 | desc->u.ss.bHubHdrDecLat = 0; | |
147 | desc->u.ss.wHubDelay = 0; | |
148 | ||
149 | port_removable = 0; | |
150 | /* bit 0 is reserved, bit 1 is for port 1, etc. */ | |
151 | for (i = 0; i < ports; i++) { | |
b0ba9720 | 152 | portsc = readl(xhci->usb3_ports[i]); |
4bbb0ace SS |
153 | if (portsc & PORT_DEV_REMOVE) |
154 | port_removable |= 1 << (i + 1); | |
155 | } | |
27c411c9 LT |
156 | |
157 | desc->u.ss.DeviceRemovable = cpu_to_le16(port_removable); | |
4bbb0ace SS |
158 | } |
159 | ||
160 | static void xhci_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci, | |
161 | struct usb_hub_descriptor *desc) | |
162 | { | |
163 | ||
164 | if (hcd->speed == HCD_USB3) | |
165 | xhci_usb3_hub_descriptor(hcd, xhci, desc); | |
166 | else | |
167 | xhci_usb2_hub_descriptor(hcd, xhci, desc); | |
168 | ||
169 | } | |
170 | ||
0f2a7930 SS |
171 | static unsigned int xhci_port_speed(unsigned int port_status) |
172 | { | |
173 | if (DEV_LOWSPEED(port_status)) | |
288ead45 | 174 | return USB_PORT_STAT_LOW_SPEED; |
0f2a7930 | 175 | if (DEV_HIGHSPEED(port_status)) |
288ead45 | 176 | return USB_PORT_STAT_HIGH_SPEED; |
0f2a7930 SS |
177 | /* |
178 | * FIXME: Yes, we should check for full speed, but the core uses that as | |
179 | * a default in portspeed() in usb/core/hub.c (which is the only place | |
288ead45 | 180 | * USB_PORT_STAT_*_SPEED is used). |
0f2a7930 SS |
181 | */ |
182 | return 0; | |
183 | } | |
184 | ||
185 | /* | |
186 | * These bits are Read Only (RO) and should be saved and written to the | |
187 | * registers: 0, 3, 10:13, 30 | |
188 | * connect status, over-current status, port speed, and device removable. | |
189 | * connect status and port speed are also sticky - meaning they're in | |
190 | * the AUX well and they aren't changed by a hot, warm, or cold reset. | |
191 | */ | |
192 | #define XHCI_PORT_RO ((1<<0) | (1<<3) | (0xf<<10) | (1<<30)) | |
193 | /* | |
194 | * These bits are RW; writing a 0 clears the bit, writing a 1 sets the bit: | |
195 | * bits 5:8, 9, 14:15, 25:27 | |
196 | * link state, port power, port indicator state, "wake on" enable state | |
197 | */ | |
198 | #define XHCI_PORT_RWS ((0xf<<5) | (1<<9) | (0x3<<14) | (0x7<<25)) | |
199 | /* | |
200 | * These bits are RW; writing a 1 sets the bit, writing a 0 has no effect: | |
201 | * bit 4 (port reset) | |
202 | */ | |
203 | #define XHCI_PORT_RW1S ((1<<4)) | |
204 | /* | |
205 | * These bits are RW; writing a 1 clears the bit, writing a 0 has no effect: | |
206 | * bits 1, 17, 18, 19, 20, 21, 22, 23 | |
207 | * port enable/disable, and | |
208 | * change bits: connect, PED, warm port reset changed (reserved zero for USB 2.0 ports), | |
209 | * over-current, reset, link state, and L1 change | |
210 | */ | |
211 | #define XHCI_PORT_RW1CS ((1<<1) | (0x7f<<17)) | |
212 | /* | |
213 | * Bit 16 is RW, and writing a '1' to it causes the link state control to be | |
214 | * latched in | |
215 | */ | |
216 | #define XHCI_PORT_RW ((1<<16)) | |
217 | /* | |
218 | * These bits are Reserved Zero (RsvdZ) and zero should be written to them: | |
219 | * bits 2, 24, 28:31 | |
220 | */ | |
221 | #define XHCI_PORT_RZ ((1<<2) | (1<<24) | (0xf<<28)) | |
222 | ||
223 | /* | |
224 | * Given a port state, this function returns a value that would result in the | |
225 | * port being in the same state, if the value was written to the port status | |
226 | * control register. | |
227 | * Save Read Only (RO) bits and save read/write bits where | |
228 | * writing a 0 clears the bit and writing a 1 sets the bit (RWS). | |
229 | * For all other types (RW1S, RW1CS, RW, and RZ), writing a '0' has no effect. | |
230 | */ | |
56192531 | 231 | u32 xhci_port_state_to_neutral(u32 state) |
0f2a7930 SS |
232 | { |
233 | /* Save read-only status and port state */ | |
234 | return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS); | |
235 | } | |
236 | ||
be88fe4f AX |
237 | /* |
238 | * find slot id based on port number. | |
f6ff0ac8 | 239 | * @port: The one-based port number from one of the two split roothubs. |
be88fe4f | 240 | */ |
5233630f SS |
241 | int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
242 | u16 port) | |
be88fe4f AX |
243 | { |
244 | int slot_id; | |
245 | int i; | |
f6ff0ac8 | 246 | enum usb_device_speed speed; |
be88fe4f AX |
247 | |
248 | slot_id = 0; | |
249 | for (i = 0; i < MAX_HC_SLOTS; i++) { | |
250 | if (!xhci->devs[i]) | |
251 | continue; | |
f6ff0ac8 SS |
252 | speed = xhci->devs[i]->udev->speed; |
253 | if (((speed == USB_SPEED_SUPER) == (hcd->speed == HCD_USB3)) | |
fe30182c | 254 | && xhci->devs[i]->fake_port == port) { |
be88fe4f AX |
255 | slot_id = i; |
256 | break; | |
257 | } | |
258 | } | |
259 | ||
260 | return slot_id; | |
261 | } | |
262 | ||
263 | /* | |
264 | * Stop device | |
265 | * It issues stop endpoint command for EP 0 to 30. And wait the last command | |
266 | * to complete. | |
267 | * suspend will set to 1, if suspend bit need to set in command. | |
268 | */ | |
269 | static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) | |
270 | { | |
271 | struct xhci_virt_device *virt_dev; | |
272 | struct xhci_command *cmd; | |
273 | unsigned long flags; | |
274 | int timeleft; | |
275 | int ret; | |
276 | int i; | |
277 | ||
278 | ret = 0; | |
279 | virt_dev = xhci->devs[slot_id]; | |
280 | cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO); | |
281 | if (!cmd) { | |
282 | xhci_dbg(xhci, "Couldn't allocate command structure.\n"); | |
283 | return -ENOMEM; | |
284 | } | |
285 | ||
286 | spin_lock_irqsave(&xhci->lock, flags); | |
287 | for (i = LAST_EP_INDEX; i > 0; i--) { | |
ddba5cd0 MN |
288 | if (virt_dev->eps[i].ring && virt_dev->eps[i].ring->dequeue) { |
289 | struct xhci_command *command; | |
290 | command = xhci_alloc_command(xhci, false, false, | |
291 | GFP_NOIO); | |
292 | if (!command) { | |
293 | spin_unlock_irqrestore(&xhci->lock, flags); | |
294 | xhci_free_command(xhci, cmd); | |
295 | return -ENOMEM; | |
296 | ||
297 | } | |
298 | xhci_queue_stop_endpoint(xhci, command, slot_id, i, | |
299 | suspend); | |
300 | } | |
be88fe4f | 301 | } |
ddba5cd0 | 302 | xhci_queue_stop_endpoint(xhci, cmd, slot_id, 0, suspend); |
be88fe4f AX |
303 | xhci_ring_cmd_db(xhci); |
304 | spin_unlock_irqrestore(&xhci->lock, flags); | |
305 | ||
306 | /* Wait for last stop endpoint command to finish */ | |
307 | timeleft = wait_for_completion_interruptible_timeout( | |
308 | cmd->completion, | |
d194c031 | 309 | XHCI_CMD_DEFAULT_TIMEOUT); |
be88fe4f AX |
310 | if (timeleft <= 0) { |
311 | xhci_warn(xhci, "%s while waiting for stop endpoint command\n", | |
312 | timeleft == 0 ? "Timeout" : "Signal"); | |
be88fe4f | 313 | ret = -ETIME; |
be88fe4f | 314 | } |
be88fe4f AX |
315 | xhci_free_command(xhci, cmd); |
316 | return ret; | |
317 | } | |
318 | ||
319 | /* | |
320 | * Ring device, it rings the all doorbells unconditionally. | |
321 | */ | |
56192531 | 322 | void xhci_ring_device(struct xhci_hcd *xhci, int slot_id) |
be88fe4f AX |
323 | { |
324 | int i; | |
325 | ||
326 | for (i = 0; i < LAST_EP_INDEX + 1; i++) | |
327 | if (xhci->devs[slot_id]->eps[i].ring && | |
328 | xhci->devs[slot_id]->eps[i].ring->dequeue) | |
329 | xhci_ring_ep_doorbell(xhci, slot_id, i, 0); | |
330 | ||
331 | return; | |
332 | } | |
333 | ||
f6ff0ac8 | 334 | static void xhci_disable_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, |
28ccd296 | 335 | u16 wIndex, __le32 __iomem *addr, u32 port_status) |
6219c047 | 336 | { |
6dd0a3a7 | 337 | /* Don't allow the USB core to disable SuperSpeed ports. */ |
f6ff0ac8 | 338 | if (hcd->speed == HCD_USB3) { |
6dd0a3a7 SS |
339 | xhci_dbg(xhci, "Ignoring request to disable " |
340 | "SuperSpeed port.\n"); | |
341 | return; | |
342 | } | |
343 | ||
6219c047 | 344 | /* Write 1 to disable the port */ |
204b7793 | 345 | writel(port_status | PORT_PE, addr); |
b0ba9720 | 346 | port_status = readl(addr); |
6219c047 SS |
347 | xhci_dbg(xhci, "disable port, actual port %d status = 0x%x\n", |
348 | wIndex, port_status); | |
349 | } | |
350 | ||
34fb562a | 351 | static void xhci_clear_port_change_bit(struct xhci_hcd *xhci, u16 wValue, |
28ccd296 | 352 | u16 wIndex, __le32 __iomem *addr, u32 port_status) |
34fb562a SS |
353 | { |
354 | char *port_change_bit; | |
355 | u32 status; | |
356 | ||
357 | switch (wValue) { | |
358 | case USB_PORT_FEAT_C_RESET: | |
359 | status = PORT_RC; | |
360 | port_change_bit = "reset"; | |
361 | break; | |
a11496eb AX |
362 | case USB_PORT_FEAT_C_BH_PORT_RESET: |
363 | status = PORT_WRC; | |
364 | port_change_bit = "warm(BH) reset"; | |
365 | break; | |
34fb562a SS |
366 | case USB_PORT_FEAT_C_CONNECTION: |
367 | status = PORT_CSC; | |
368 | port_change_bit = "connect"; | |
369 | break; | |
370 | case USB_PORT_FEAT_C_OVER_CURRENT: | |
371 | status = PORT_OCC; | |
372 | port_change_bit = "over-current"; | |
373 | break; | |
6219c047 SS |
374 | case USB_PORT_FEAT_C_ENABLE: |
375 | status = PORT_PEC; | |
376 | port_change_bit = "enable/disable"; | |
377 | break; | |
be88fe4f AX |
378 | case USB_PORT_FEAT_C_SUSPEND: |
379 | status = PORT_PLC; | |
380 | port_change_bit = "suspend/resume"; | |
381 | break; | |
85387c0e AX |
382 | case USB_PORT_FEAT_C_PORT_LINK_STATE: |
383 | status = PORT_PLC; | |
384 | port_change_bit = "link state"; | |
385 | break; | |
34fb562a SS |
386 | default: |
387 | /* Should never happen */ | |
388 | return; | |
389 | } | |
390 | /* Change bits are all write 1 to clear */ | |
204b7793 | 391 | writel(port_status | status, addr); |
b0ba9720 | 392 | port_status = readl(addr); |
34fb562a SS |
393 | xhci_dbg(xhci, "clear port %s change, actual port %d status = 0x%x\n", |
394 | port_change_bit, wIndex, port_status); | |
395 | } | |
396 | ||
a0885924 | 397 | static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array) |
398 | { | |
399 | int max_ports; | |
400 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
401 | ||
402 | if (hcd->speed == HCD_USB3) { | |
403 | max_ports = xhci->num_usb3_ports; | |
404 | *port_array = xhci->usb3_ports; | |
405 | } else { | |
406 | max_ports = xhci->num_usb2_ports; | |
407 | *port_array = xhci->usb2_ports; | |
408 | } | |
409 | ||
410 | return max_ports; | |
411 | } | |
412 | ||
c9682dff AX |
413 | void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array, |
414 | int port_id, u32 link_state) | |
415 | { | |
416 | u32 temp; | |
417 | ||
b0ba9720 | 418 | temp = readl(port_array[port_id]); |
c9682dff AX |
419 | temp = xhci_port_state_to_neutral(temp); |
420 | temp &= ~PORT_PLS_MASK; | |
421 | temp |= PORT_LINK_STROBE | link_state; | |
204b7793 | 422 | writel(temp, port_array[port_id]); |
c9682dff AX |
423 | } |
424 | ||
ed384bd3 | 425 | static void xhci_set_remote_wake_mask(struct xhci_hcd *xhci, |
4296c70a SS |
426 | __le32 __iomem **port_array, int port_id, u16 wake_mask) |
427 | { | |
428 | u32 temp; | |
429 | ||
b0ba9720 | 430 | temp = readl(port_array[port_id]); |
4296c70a SS |
431 | temp = xhci_port_state_to_neutral(temp); |
432 | ||
433 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_CONNECT) | |
434 | temp |= PORT_WKCONN_E; | |
435 | else | |
436 | temp &= ~PORT_WKCONN_E; | |
437 | ||
438 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_DISCONNECT) | |
439 | temp |= PORT_WKDISC_E; | |
440 | else | |
441 | temp &= ~PORT_WKDISC_E; | |
442 | ||
443 | if (wake_mask & USB_PORT_FEAT_REMOTE_WAKE_OVER_CURRENT) | |
444 | temp |= PORT_WKOC_E; | |
445 | else | |
446 | temp &= ~PORT_WKOC_E; | |
447 | ||
204b7793 | 448 | writel(temp, port_array[port_id]); |
4296c70a SS |
449 | } |
450 | ||
d2f52c9e AX |
451 | /* Test and clear port RWC bit */ |
452 | void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array, | |
453 | int port_id, u32 port_bit) | |
454 | { | |
455 | u32 temp; | |
456 | ||
b0ba9720 | 457 | temp = readl(port_array[port_id]); |
d2f52c9e AX |
458 | if (temp & port_bit) { |
459 | temp = xhci_port_state_to_neutral(temp); | |
460 | temp |= port_bit; | |
204b7793 | 461 | writel(temp, port_array[port_id]); |
d2f52c9e AX |
462 | } |
463 | } | |
464 | ||
063ebeb4 SS |
465 | /* Updates Link Status for USB 2.1 port */ |
466 | static void xhci_hub_report_usb2_link_state(u32 *status, u32 status_reg) | |
467 | { | |
468 | if ((status_reg & PORT_PLS_MASK) == XDEV_U2) | |
469 | *status |= USB_PORT_STAT_L1; | |
470 | } | |
471 | ||
8bea2bd3 | 472 | /* Updates Link Status for super Speed port */ |
063ebeb4 | 473 | static void xhci_hub_report_usb3_link_state(u32 *status, u32 status_reg) |
8bea2bd3 SL |
474 | { |
475 | u32 pls = status_reg & PORT_PLS_MASK; | |
476 | ||
477 | /* resume state is a xHCI internal state. | |
478 | * Do not report it to usb core. | |
479 | */ | |
480 | if (pls == XDEV_RESUME) | |
481 | return; | |
482 | ||
483 | /* When the CAS bit is set then warm reset | |
484 | * should be performed on port | |
485 | */ | |
486 | if (status_reg & PORT_CAS) { | |
487 | /* The CAS bit can be set while the port is | |
488 | * in any link state. | |
489 | * Only roothubs have CAS bit, so we | |
490 | * pretend to be in compliance mode | |
491 | * unless we're already in compliance | |
492 | * or the inactive state. | |
493 | */ | |
494 | if (pls != USB_SS_PORT_LS_COMP_MOD && | |
495 | pls != USB_SS_PORT_LS_SS_INACTIVE) { | |
496 | pls = USB_SS_PORT_LS_COMP_MOD; | |
497 | } | |
498 | /* Return also connection bit - | |
499 | * hub state machine resets port | |
500 | * when this bit is set. | |
501 | */ | |
502 | pls |= USB_PORT_STAT_CONNECTION; | |
71c731a2 AC |
503 | } else { |
504 | /* | |
505 | * If CAS bit isn't set but the Port is already at | |
506 | * Compliance Mode, fake a connection so the USB core | |
507 | * notices the Compliance state and resets the port. | |
508 | * This resolves an issue generated by the SN65LVPE502CP | |
509 | * in which sometimes the port enters compliance mode | |
510 | * caused by a delay on the host-device negotiation. | |
511 | */ | |
512 | if (pls == USB_SS_PORT_LS_COMP_MOD) | |
513 | pls |= USB_PORT_STAT_CONNECTION; | |
8bea2bd3 | 514 | } |
71c731a2 | 515 | |
8bea2bd3 SL |
516 | /* update status field */ |
517 | *status |= pls; | |
518 | } | |
519 | ||
71c731a2 AC |
520 | /* |
521 | * Function for Compliance Mode Quirk. | |
522 | * | |
523 | * This Function verifies if all xhc USB3 ports have entered U0, if so, | |
524 | * the compliance mode timer is deleted. A port won't enter | |
525 | * compliance mode if it has previously entered U0. | |
526 | */ | |
5f20cf12 SK |
527 | static void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status, |
528 | u16 wIndex) | |
71c731a2 AC |
529 | { |
530 | u32 all_ports_seen_u0 = ((1 << xhci->num_usb3_ports)-1); | |
531 | bool port_in_u0 = ((status & PORT_PLS_MASK) == XDEV_U0); | |
532 | ||
533 | if (!(xhci->quirks & XHCI_COMP_MODE_QUIRK)) | |
534 | return; | |
535 | ||
536 | if ((xhci->port_status_u0 != all_ports_seen_u0) && port_in_u0) { | |
537 | xhci->port_status_u0 |= 1 << wIndex; | |
538 | if (xhci->port_status_u0 == all_ports_seen_u0) { | |
539 | del_timer_sync(&xhci->comp_mode_recovery_timer); | |
4bdfe4c3 XR |
540 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, |
541 | "All USB3 ports have entered U0 already!"); | |
542 | xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, | |
543 | "Compliance Mode Recovery Timer Deleted."); | |
71c731a2 AC |
544 | } |
545 | } | |
546 | } | |
547 | ||
eae5b176 SS |
548 | /* |
549 | * Converts a raw xHCI port status into the format that external USB 2.0 or USB | |
550 | * 3.0 hubs use. | |
551 | * | |
552 | * Possible side effects: | |
553 | * - Mark a port as being done with device resume, | |
554 | * and ring the endpoint doorbells. | |
555 | * - Stop the Synopsys redriver Compliance Mode polling. | |
8b3d4570 | 556 | * - Drop and reacquire the xHCI lock, in order to wait for port resume. |
eae5b176 SS |
557 | */ |
558 | static u32 xhci_get_port_status(struct usb_hcd *hcd, | |
559 | struct xhci_bus_state *bus_state, | |
560 | __le32 __iomem **port_array, | |
8b3d4570 SS |
561 | u16 wIndex, u32 raw_port_status, |
562 | unsigned long flags) | |
563 | __releases(&xhci->lock) | |
564 | __acquires(&xhci->lock) | |
eae5b176 SS |
565 | { |
566 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
567 | u32 status = 0; | |
568 | int slot_id; | |
569 | ||
570 | /* wPortChange bits */ | |
571 | if (raw_port_status & PORT_CSC) | |
572 | status |= USB_PORT_STAT_C_CONNECTION << 16; | |
573 | if (raw_port_status & PORT_PEC) | |
574 | status |= USB_PORT_STAT_C_ENABLE << 16; | |
575 | if ((raw_port_status & PORT_OCC)) | |
576 | status |= USB_PORT_STAT_C_OVERCURRENT << 16; | |
577 | if ((raw_port_status & PORT_RC)) | |
578 | status |= USB_PORT_STAT_C_RESET << 16; | |
579 | /* USB3.0 only */ | |
580 | if (hcd->speed == HCD_USB3) { | |
581 | if ((raw_port_status & PORT_PLC)) | |
582 | status |= USB_PORT_STAT_C_LINK_STATE << 16; | |
583 | if ((raw_port_status & PORT_WRC)) | |
584 | status |= USB_PORT_STAT_C_BH_RESET << 16; | |
585 | } | |
586 | ||
587 | if (hcd->speed != HCD_USB3) { | |
588 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3 | |
589 | && (raw_port_status & PORT_POWER)) | |
590 | status |= USB_PORT_STAT_SUSPEND; | |
591 | } | |
592 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME && | |
593 | !DEV_SUPERSPEED(raw_port_status)) { | |
594 | if ((raw_port_status & PORT_RESET) || | |
595 | !(raw_port_status & PORT_PE)) | |
596 | return 0xffffffff; | |
597 | if (time_after_eq(jiffies, | |
598 | bus_state->resume_done[wIndex])) { | |
8b3d4570 SS |
599 | int time_left; |
600 | ||
eae5b176 SS |
601 | xhci_dbg(xhci, "Resume USB2 port %d\n", |
602 | wIndex + 1); | |
603 | bus_state->resume_done[wIndex] = 0; | |
604 | clear_bit(wIndex, &bus_state->resuming_ports); | |
8b3d4570 SS |
605 | |
606 | set_bit(wIndex, &bus_state->rexit_ports); | |
eae5b176 SS |
607 | xhci_set_link_state(xhci, port_array, wIndex, |
608 | XDEV_U0); | |
8b3d4570 SS |
609 | |
610 | spin_unlock_irqrestore(&xhci->lock, flags); | |
611 | time_left = wait_for_completion_timeout( | |
612 | &bus_state->rexit_done[wIndex], | |
613 | msecs_to_jiffies( | |
614 | XHCI_MAX_REXIT_TIMEOUT)); | |
615 | spin_lock_irqsave(&xhci->lock, flags); | |
616 | ||
617 | if (time_left) { | |
618 | slot_id = xhci_find_slot_id_by_port(hcd, | |
619 | xhci, wIndex + 1); | |
620 | if (!slot_id) { | |
621 | xhci_dbg(xhci, "slot_id is zero\n"); | |
622 | return 0xffffffff; | |
623 | } | |
624 | xhci_ring_device(xhci, slot_id); | |
625 | } else { | |
b0ba9720 | 626 | int port_status = readl(port_array[wIndex]); |
8b3d4570 SS |
627 | xhci_warn(xhci, "Port resume took longer than %i msec, port status = 0x%x\n", |
628 | XHCI_MAX_REXIT_TIMEOUT, | |
629 | port_status); | |
630 | status |= USB_PORT_STAT_SUSPEND; | |
631 | clear_bit(wIndex, &bus_state->rexit_ports); | |
eae5b176 | 632 | } |
8b3d4570 | 633 | |
eae5b176 SS |
634 | bus_state->port_c_suspend |= 1 << wIndex; |
635 | bus_state->suspended_ports &= ~(1 << wIndex); | |
636 | } else { | |
637 | /* | |
638 | * The resume has been signaling for less than | |
639 | * 20ms. Report the port status as SUSPEND, | |
640 | * let the usbcore check port status again | |
641 | * and clear resume signaling later. | |
642 | */ | |
643 | status |= USB_PORT_STAT_SUSPEND; | |
644 | } | |
645 | } | |
646 | if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0 | |
647 | && (raw_port_status & PORT_POWER) | |
648 | && (bus_state->suspended_ports & (1 << wIndex))) { | |
649 | bus_state->suspended_ports &= ~(1 << wIndex); | |
650 | if (hcd->speed != HCD_USB3) | |
651 | bus_state->port_c_suspend |= 1 << wIndex; | |
652 | } | |
653 | if (raw_port_status & PORT_CONNECT) { | |
654 | status |= USB_PORT_STAT_CONNECTION; | |
655 | status |= xhci_port_speed(raw_port_status); | |
656 | } | |
657 | if (raw_port_status & PORT_PE) | |
658 | status |= USB_PORT_STAT_ENABLE; | |
659 | if (raw_port_status & PORT_OC) | |
660 | status |= USB_PORT_STAT_OVERCURRENT; | |
661 | if (raw_port_status & PORT_RESET) | |
662 | status |= USB_PORT_STAT_RESET; | |
663 | if (raw_port_status & PORT_POWER) { | |
664 | if (hcd->speed == HCD_USB3) | |
665 | status |= USB_SS_PORT_STAT_POWER; | |
666 | else | |
667 | status |= USB_PORT_STAT_POWER; | |
668 | } | |
063ebeb4 | 669 | /* Update Port Link State */ |
eae5b176 | 670 | if (hcd->speed == HCD_USB3) { |
063ebeb4 | 671 | xhci_hub_report_usb3_link_state(&status, raw_port_status); |
eae5b176 SS |
672 | /* |
673 | * Verify if all USB3 Ports Have entered U0 already. | |
674 | * Delete Compliance Mode Timer if so. | |
675 | */ | |
676 | xhci_del_comp_mod_timer(xhci, raw_port_status, wIndex); | |
063ebeb4 SS |
677 | } else { |
678 | xhci_hub_report_usb2_link_state(&status, raw_port_status); | |
eae5b176 SS |
679 | } |
680 | if (bus_state->port_c_suspend & (1 << wIndex)) | |
681 | status |= 1 << USB_PORT_FEAT_C_SUSPEND; | |
682 | ||
683 | return status; | |
684 | } | |
685 | ||
0f2a7930 SS |
686 | int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
687 | u16 wIndex, char *buf, u16 wLength) | |
688 | { | |
689 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
a0885924 | 690 | int max_ports; |
0f2a7930 | 691 | unsigned long flags; |
c9682dff | 692 | u32 temp, status; |
0f2a7930 | 693 | int retval = 0; |
28ccd296 | 694 | __le32 __iomem **port_array; |
be88fe4f | 695 | int slot_id; |
20b67cf5 | 696 | struct xhci_bus_state *bus_state; |
2c441780 | 697 | u16 link_state = 0; |
4296c70a | 698 | u16 wake_mask = 0; |
797b0ca5 | 699 | u16 timeout = 0; |
0f2a7930 | 700 | |
a0885924 | 701 | max_ports = xhci_get_ports(hcd, &port_array); |
20b67cf5 | 702 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
0f2a7930 SS |
703 | |
704 | spin_lock_irqsave(&xhci->lock, flags); | |
705 | switch (typeReq) { | |
706 | case GetHubStatus: | |
707 | /* No power source, over-current reported per port */ | |
708 | memset(buf, 0, 4); | |
709 | break; | |
710 | case GetHubDescriptor: | |
4bbb0ace SS |
711 | /* Check to make sure userspace is asking for the USB 3.0 hub |
712 | * descriptor for the USB 3.0 roothub. If not, we stall the | |
713 | * endpoint, like external hubs do. | |
714 | */ | |
715 | if (hcd->speed == HCD_USB3 && | |
716 | (wLength < USB_DT_SS_HUB_SIZE || | |
717 | wValue != (USB_DT_SS_HUB << 8))) { | |
718 | xhci_dbg(xhci, "Wrong hub descriptor type for " | |
719 | "USB 3.0 roothub.\n"); | |
720 | goto error; | |
721 | } | |
f6ff0ac8 SS |
722 | xhci_hub_descriptor(hcd, xhci, |
723 | (struct usb_hub_descriptor *) buf); | |
0f2a7930 | 724 | break; |
48e82361 SS |
725 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
726 | if ((wValue & 0xff00) != (USB_DT_BOS << 8)) | |
727 | goto error; | |
728 | ||
729 | if (hcd->speed != HCD_USB3) | |
730 | goto error; | |
731 | ||
af3a23ef | 732 | /* Set the U1 and U2 exit latencies. */ |
48e82361 SS |
733 | memcpy(buf, &usb_bos_descriptor, |
734 | USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE); | |
25cd2882 SS |
735 | if ((xhci->quirks & XHCI_LPM_SUPPORT)) { |
736 | temp = readl(&xhci->cap_regs->hcs_params3); | |
737 | buf[12] = HCS_U1_LATENCY(temp); | |
738 | put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]); | |
739 | } | |
48e82361 | 740 | |
af3a23ef | 741 | /* Indicate whether the host has LTM support. */ |
b0ba9720 | 742 | temp = readl(&xhci->cap_regs->hcc_params); |
af3a23ef SS |
743 | if (HCC_LTC(temp)) |
744 | buf[8] |= USB_LTM_SUPPORT; | |
745 | ||
48e82361 SS |
746 | spin_unlock_irqrestore(&xhci->lock, flags); |
747 | return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE; | |
0f2a7930 | 748 | case GetPortStatus: |
a0885924 | 749 | if (!wIndex || wIndex > max_ports) |
0f2a7930 SS |
750 | goto error; |
751 | wIndex--; | |
b0ba9720 | 752 | temp = readl(port_array[wIndex]); |
f9de8151 SS |
753 | if (temp == 0xffffffff) { |
754 | retval = -ENODEV; | |
755 | break; | |
756 | } | |
eae5b176 | 757 | status = xhci_get_port_status(hcd, bus_state, port_array, |
8b3d4570 | 758 | wIndex, temp, flags); |
eae5b176 SS |
759 | if (status == 0xffffffff) |
760 | goto error; | |
0ed9a57e | 761 | |
eae5b176 SS |
762 | xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", |
763 | wIndex, temp); | |
0f2a7930 | 764 | xhci_dbg(xhci, "Get port status returned 0x%x\n", status); |
eae5b176 | 765 | |
0f2a7930 SS |
766 | put_unaligned(cpu_to_le32(status), (__le32 *) buf); |
767 | break; | |
768 | case SetPortFeature: | |
2c441780 AX |
769 | if (wValue == USB_PORT_FEAT_LINK_STATE) |
770 | link_state = (wIndex & 0xff00) >> 3; | |
4296c70a SS |
771 | if (wValue == USB_PORT_FEAT_REMOTE_WAKE_MASK) |
772 | wake_mask = wIndex & 0xff00; | |
797b0ca5 SS |
773 | /* The MSB of wIndex is the U1/U2 timeout */ |
774 | timeout = (wIndex & 0xff00) >> 8; | |
0f2a7930 | 775 | wIndex &= 0xff; |
a0885924 | 776 | if (!wIndex || wIndex > max_ports) |
0f2a7930 SS |
777 | goto error; |
778 | wIndex--; | |
b0ba9720 | 779 | temp = readl(port_array[wIndex]); |
f9de8151 SS |
780 | if (temp == 0xffffffff) { |
781 | retval = -ENODEV; | |
782 | break; | |
783 | } | |
0f2a7930 | 784 | temp = xhci_port_state_to_neutral(temp); |
4bbb0ace | 785 | /* FIXME: What new port features do we need to support? */ |
0f2a7930 | 786 | switch (wValue) { |
be88fe4f | 787 | case USB_PORT_FEAT_SUSPEND: |
b0ba9720 | 788 | temp = readl(port_array[wIndex]); |
65580b43 AX |
789 | if ((temp & PORT_PLS_MASK) != XDEV_U0) { |
790 | /* Resume the port to U0 first */ | |
791 | xhci_set_link_state(xhci, port_array, wIndex, | |
792 | XDEV_U0); | |
793 | spin_unlock_irqrestore(&xhci->lock, flags); | |
794 | msleep(10); | |
795 | spin_lock_irqsave(&xhci->lock, flags); | |
796 | } | |
be88fe4f AX |
797 | /* In spec software should not attempt to suspend |
798 | * a port unless the port reports that it is in the | |
799 | * enabled (PED = ‘1’,PLS < ‘3’) state. | |
800 | */ | |
b0ba9720 | 801 | temp = readl(port_array[wIndex]); |
be88fe4f AX |
802 | if ((temp & PORT_PE) == 0 || (temp & PORT_RESET) |
803 | || (temp & PORT_PLS_MASK) >= XDEV_U3) { | |
804 | xhci_warn(xhci, "USB core suspending device " | |
805 | "not in U0/U1/U2.\n"); | |
806 | goto error; | |
807 | } | |
808 | ||
5233630f SS |
809 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
810 | wIndex + 1); | |
be88fe4f AX |
811 | if (!slot_id) { |
812 | xhci_warn(xhci, "slot_id is zero\n"); | |
813 | goto error; | |
814 | } | |
815 | /* unlock to execute stop endpoint commands */ | |
816 | spin_unlock_irqrestore(&xhci->lock, flags); | |
817 | xhci_stop_device(xhci, slot_id, 1); | |
818 | spin_lock_irqsave(&xhci->lock, flags); | |
819 | ||
c9682dff | 820 | xhci_set_link_state(xhci, port_array, wIndex, XDEV_U3); |
be88fe4f AX |
821 | |
822 | spin_unlock_irqrestore(&xhci->lock, flags); | |
823 | msleep(10); /* wait device to enter */ | |
824 | spin_lock_irqsave(&xhci->lock, flags); | |
825 | ||
b0ba9720 | 826 | temp = readl(port_array[wIndex]); |
20b67cf5 | 827 | bus_state->suspended_ports |= 1 << wIndex; |
be88fe4f | 828 | break; |
2c441780 | 829 | case USB_PORT_FEAT_LINK_STATE: |
b0ba9720 | 830 | temp = readl(port_array[wIndex]); |
41e7e056 SS |
831 | |
832 | /* Disable port */ | |
833 | if (link_state == USB_SS_PORT_LS_SS_DISABLED) { | |
834 | xhci_dbg(xhci, "Disable port %d\n", wIndex); | |
835 | temp = xhci_port_state_to_neutral(temp); | |
836 | /* | |
837 | * Clear all change bits, so that we get a new | |
838 | * connection event. | |
839 | */ | |
840 | temp |= PORT_CSC | PORT_PEC | PORT_WRC | | |
841 | PORT_OCC | PORT_RC | PORT_PLC | | |
842 | PORT_CEC; | |
204b7793 | 843 | writel(temp | PORT_PE, port_array[wIndex]); |
b0ba9720 | 844 | temp = readl(port_array[wIndex]); |
41e7e056 SS |
845 | break; |
846 | } | |
847 | ||
848 | /* Put link in RxDetect (enable port) */ | |
849 | if (link_state == USB_SS_PORT_LS_RX_DETECT) { | |
850 | xhci_dbg(xhci, "Enable port %d\n", wIndex); | |
851 | xhci_set_link_state(xhci, port_array, wIndex, | |
852 | link_state); | |
b0ba9720 | 853 | temp = readl(port_array[wIndex]); |
41e7e056 SS |
854 | break; |
855 | } | |
856 | ||
2c441780 | 857 | /* Software should not attempt to set |
41e7e056 | 858 | * port link state above '3' (U3) and the port |
2c441780 AX |
859 | * must be enabled. |
860 | */ | |
861 | if ((temp & PORT_PE) == 0 || | |
41e7e056 | 862 | (link_state > USB_SS_PORT_LS_U3)) { |
2c441780 AX |
863 | xhci_warn(xhci, "Cannot set link state.\n"); |
864 | goto error; | |
865 | } | |
866 | ||
867 | if (link_state == USB_SS_PORT_LS_U3) { | |
868 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, | |
869 | wIndex + 1); | |
870 | if (slot_id) { | |
871 | /* unlock to execute stop endpoint | |
872 | * commands */ | |
873 | spin_unlock_irqrestore(&xhci->lock, | |
874 | flags); | |
875 | xhci_stop_device(xhci, slot_id, 1); | |
876 | spin_lock_irqsave(&xhci->lock, flags); | |
877 | } | |
878 | } | |
879 | ||
c9682dff AX |
880 | xhci_set_link_state(xhci, port_array, wIndex, |
881 | link_state); | |
2c441780 AX |
882 | |
883 | spin_unlock_irqrestore(&xhci->lock, flags); | |
884 | msleep(20); /* wait device to enter */ | |
885 | spin_lock_irqsave(&xhci->lock, flags); | |
886 | ||
b0ba9720 | 887 | temp = readl(port_array[wIndex]); |
2c441780 AX |
888 | if (link_state == USB_SS_PORT_LS_U3) |
889 | bus_state->suspended_ports |= 1 << wIndex; | |
890 | break; | |
0f2a7930 SS |
891 | case USB_PORT_FEAT_POWER: |
892 | /* | |
893 | * Turn on ports, even if there isn't per-port switching. | |
894 | * HC will report connect events even before this is set. | |
895 | * However, khubd will ignore the roothub events until | |
896 | * the roothub is registered. | |
897 | */ | |
204b7793 | 898 | writel(temp | PORT_POWER, port_array[wIndex]); |
0f2a7930 | 899 | |
b0ba9720 | 900 | temp = readl(port_array[wIndex]); |
0f2a7930 | 901 | xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", wIndex, temp); |
f7ac7787 | 902 | |
170ed807 | 903 | spin_unlock_irqrestore(&xhci->lock, flags); |
f7ac7787 LT |
904 | temp = usb_acpi_power_manageable(hcd->self.root_hub, |
905 | wIndex); | |
906 | if (temp) | |
907 | usb_acpi_set_power_state(hcd->self.root_hub, | |
908 | wIndex, true); | |
170ed807 | 909 | spin_lock_irqsave(&xhci->lock, flags); |
0f2a7930 SS |
910 | break; |
911 | case USB_PORT_FEAT_RESET: | |
912 | temp = (temp | PORT_RESET); | |
204b7793 | 913 | writel(temp, port_array[wIndex]); |
0f2a7930 | 914 | |
b0ba9720 | 915 | temp = readl(port_array[wIndex]); |
0f2a7930 SS |
916 | xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp); |
917 | break; | |
4296c70a SS |
918 | case USB_PORT_FEAT_REMOTE_WAKE_MASK: |
919 | xhci_set_remote_wake_mask(xhci, port_array, | |
920 | wIndex, wake_mask); | |
b0ba9720 | 921 | temp = readl(port_array[wIndex]); |
4296c70a SS |
922 | xhci_dbg(xhci, "set port remote wake mask, " |
923 | "actual port %d status = 0x%x\n", | |
924 | wIndex, temp); | |
925 | break; | |
a11496eb AX |
926 | case USB_PORT_FEAT_BH_PORT_RESET: |
927 | temp |= PORT_WR; | |
204b7793 | 928 | writel(temp, port_array[wIndex]); |
a11496eb | 929 | |
b0ba9720 | 930 | temp = readl(port_array[wIndex]); |
a11496eb | 931 | break; |
797b0ca5 SS |
932 | case USB_PORT_FEAT_U1_TIMEOUT: |
933 | if (hcd->speed != HCD_USB3) | |
934 | goto error; | |
b0ba9720 | 935 | temp = readl(port_array[wIndex] + PORTPMSC); |
797b0ca5 SS |
936 | temp &= ~PORT_U1_TIMEOUT_MASK; |
937 | temp |= PORT_U1_TIMEOUT(timeout); | |
204b7793 | 938 | writel(temp, port_array[wIndex] + PORTPMSC); |
797b0ca5 SS |
939 | break; |
940 | case USB_PORT_FEAT_U2_TIMEOUT: | |
941 | if (hcd->speed != HCD_USB3) | |
942 | goto error; | |
b0ba9720 | 943 | temp = readl(port_array[wIndex] + PORTPMSC); |
797b0ca5 SS |
944 | temp &= ~PORT_U2_TIMEOUT_MASK; |
945 | temp |= PORT_U2_TIMEOUT(timeout); | |
204b7793 | 946 | writel(temp, port_array[wIndex] + PORTPMSC); |
797b0ca5 | 947 | break; |
0f2a7930 SS |
948 | default: |
949 | goto error; | |
950 | } | |
5308a91b | 951 | /* unblock any posted writes */ |
b0ba9720 | 952 | temp = readl(port_array[wIndex]); |
0f2a7930 SS |
953 | break; |
954 | case ClearPortFeature: | |
a0885924 | 955 | if (!wIndex || wIndex > max_ports) |
0f2a7930 SS |
956 | goto error; |
957 | wIndex--; | |
b0ba9720 | 958 | temp = readl(port_array[wIndex]); |
f9de8151 SS |
959 | if (temp == 0xffffffff) { |
960 | retval = -ENODEV; | |
961 | break; | |
962 | } | |
4bbb0ace | 963 | /* FIXME: What new port features do we need to support? */ |
0f2a7930 SS |
964 | temp = xhci_port_state_to_neutral(temp); |
965 | switch (wValue) { | |
be88fe4f | 966 | case USB_PORT_FEAT_SUSPEND: |
b0ba9720 | 967 | temp = readl(port_array[wIndex]); |
be88fe4f AX |
968 | xhci_dbg(xhci, "clear USB_PORT_FEAT_SUSPEND\n"); |
969 | xhci_dbg(xhci, "PORTSC %04x\n", temp); | |
970 | if (temp & PORT_RESET) | |
971 | goto error; | |
5ac04bf1 | 972 | if ((temp & PORT_PLS_MASK) == XDEV_U3) { |
be88fe4f AX |
973 | if ((temp & PORT_PE) == 0) |
974 | goto error; | |
be88fe4f | 975 | |
c9682dff AX |
976 | xhci_set_link_state(xhci, port_array, wIndex, |
977 | XDEV_RESUME); | |
978 | spin_unlock_irqrestore(&xhci->lock, flags); | |
a7114230 AX |
979 | msleep(20); |
980 | spin_lock_irqsave(&xhci->lock, flags); | |
c9682dff AX |
981 | xhci_set_link_state(xhci, port_array, wIndex, |
982 | XDEV_U0); | |
be88fe4f | 983 | } |
a7114230 | 984 | bus_state->port_c_suspend |= 1 << wIndex; |
be88fe4f | 985 | |
5233630f SS |
986 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
987 | wIndex + 1); | |
be88fe4f AX |
988 | if (!slot_id) { |
989 | xhci_dbg(xhci, "slot_id is zero\n"); | |
990 | goto error; | |
991 | } | |
992 | xhci_ring_device(xhci, slot_id); | |
993 | break; | |
994 | case USB_PORT_FEAT_C_SUSPEND: | |
20b67cf5 | 995 | bus_state->port_c_suspend &= ~(1 << wIndex); |
0f2a7930 | 996 | case USB_PORT_FEAT_C_RESET: |
a11496eb | 997 | case USB_PORT_FEAT_C_BH_PORT_RESET: |
0f2a7930 | 998 | case USB_PORT_FEAT_C_CONNECTION: |
0f2a7930 | 999 | case USB_PORT_FEAT_C_OVER_CURRENT: |
6219c047 | 1000 | case USB_PORT_FEAT_C_ENABLE: |
85387c0e | 1001 | case USB_PORT_FEAT_C_PORT_LINK_STATE: |
34fb562a | 1002 | xhci_clear_port_change_bit(xhci, wValue, wIndex, |
5308a91b | 1003 | port_array[wIndex], temp); |
0f2a7930 | 1004 | break; |
6219c047 | 1005 | case USB_PORT_FEAT_ENABLE: |
f6ff0ac8 | 1006 | xhci_disable_port(hcd, xhci, wIndex, |
5308a91b | 1007 | port_array[wIndex], temp); |
6219c047 | 1008 | break; |
693d8eb8 | 1009 | case USB_PORT_FEAT_POWER: |
204b7793 | 1010 | writel(temp & ~PORT_POWER, port_array[wIndex]); |
f7ac7787 | 1011 | |
170ed807 | 1012 | spin_unlock_irqrestore(&xhci->lock, flags); |
f7ac7787 LT |
1013 | temp = usb_acpi_power_manageable(hcd->self.root_hub, |
1014 | wIndex); | |
1015 | if (temp) | |
1016 | usb_acpi_set_power_state(hcd->self.root_hub, | |
1017 | wIndex, false); | |
170ed807 | 1018 | spin_lock_irqsave(&xhci->lock, flags); |
693d8eb8 | 1019 | break; |
0f2a7930 SS |
1020 | default: |
1021 | goto error; | |
1022 | } | |
0f2a7930 SS |
1023 | break; |
1024 | default: | |
1025 | error: | |
1026 | /* "stall" on error */ | |
1027 | retval = -EPIPE; | |
1028 | } | |
1029 | spin_unlock_irqrestore(&xhci->lock, flags); | |
1030 | return retval; | |
1031 | } | |
1032 | ||
1033 | /* | |
1034 | * Returns 0 if the status hasn't changed, or the number of bytes in buf. | |
1035 | * Ports are 0-indexed from the HCD point of view, | |
1036 | * and 1-indexed from the USB core pointer of view. | |
0f2a7930 SS |
1037 | * |
1038 | * Note that the status change bits will be cleared as soon as a port status | |
1039 | * change event is generated, so we use the saved status from that event. | |
1040 | */ | |
1041 | int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) | |
1042 | { | |
1043 | unsigned long flags; | |
1044 | u32 temp, status; | |
56192531 | 1045 | u32 mask; |
0f2a7930 SS |
1046 | int i, retval; |
1047 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
a0885924 | 1048 | int max_ports; |
28ccd296 | 1049 | __le32 __iomem **port_array; |
20b67cf5 | 1050 | struct xhci_bus_state *bus_state; |
c52804a4 | 1051 | bool reset_change = false; |
0f2a7930 | 1052 | |
a0885924 | 1053 | max_ports = xhci_get_ports(hcd, &port_array); |
20b67cf5 | 1054 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
0f2a7930 SS |
1055 | |
1056 | /* Initial status is no changes */ | |
a0885924 | 1057 | retval = (max_ports + 8) / 8; |
419a8e81 | 1058 | memset(buf, 0, retval); |
f370b996 AX |
1059 | |
1060 | /* | |
1061 | * Inform the usbcore about resume-in-progress by returning | |
1062 | * a non-zero value even if there are no status changes. | |
1063 | */ | |
1064 | status = bus_state->resuming_ports; | |
0f2a7930 | 1065 | |
44f4c3ed | 1066 | mask = PORT_CSC | PORT_PEC | PORT_OCC | PORT_PLC | PORT_WRC; |
56192531 | 1067 | |
0f2a7930 SS |
1068 | spin_lock_irqsave(&xhci->lock, flags); |
1069 | /* For each port, did anything change? If so, set that bit in buf. */ | |
a0885924 | 1070 | for (i = 0; i < max_ports; i++) { |
b0ba9720 | 1071 | temp = readl(port_array[i]); |
f9de8151 SS |
1072 | if (temp == 0xffffffff) { |
1073 | retval = -ENODEV; | |
1074 | break; | |
1075 | } | |
56192531 | 1076 | if ((temp & mask) != 0 || |
20b67cf5 SS |
1077 | (bus_state->port_c_suspend & 1 << i) || |
1078 | (bus_state->resume_done[i] && time_after_eq( | |
1079 | jiffies, bus_state->resume_done[i]))) { | |
419a8e81 | 1080 | buf[(i + 1) / 8] |= 1 << (i + 1) % 8; |
0f2a7930 SS |
1081 | status = 1; |
1082 | } | |
c52804a4 SS |
1083 | if ((temp & PORT_RC)) |
1084 | reset_change = true; | |
1085 | } | |
1086 | if (!status && !reset_change) { | |
1087 | xhci_dbg(xhci, "%s: stopping port polling.\n", __func__); | |
1088 | clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); | |
0f2a7930 SS |
1089 | } |
1090 | spin_unlock_irqrestore(&xhci->lock, flags); | |
1091 | return status ? retval : 0; | |
1092 | } | |
9777e3ce AX |
1093 | |
1094 | #ifdef CONFIG_PM | |
1095 | ||
1096 | int xhci_bus_suspend(struct usb_hcd *hcd) | |
1097 | { | |
1098 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
518e848e | 1099 | int max_ports, port_index; |
28ccd296 | 1100 | __le32 __iomem **port_array; |
20b67cf5 | 1101 | struct xhci_bus_state *bus_state; |
9777e3ce AX |
1102 | unsigned long flags; |
1103 | ||
a0885924 | 1104 | max_ports = xhci_get_ports(hcd, &port_array); |
20b67cf5 | 1105 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
9777e3ce AX |
1106 | |
1107 | spin_lock_irqsave(&xhci->lock, flags); | |
1108 | ||
1109 | if (hcd->self.root_hub->do_remote_wakeup) { | |
f370b996 AX |
1110 | if (bus_state->resuming_ports) { |
1111 | spin_unlock_irqrestore(&xhci->lock, flags); | |
1112 | xhci_dbg(xhci, "suspend failed because " | |
1113 | "a port is resuming\n"); | |
1114 | return -EBUSY; | |
9777e3ce AX |
1115 | } |
1116 | } | |
1117 | ||
518e848e | 1118 | port_index = max_ports; |
20b67cf5 | 1119 | bus_state->bus_suspended = 0; |
518e848e | 1120 | while (port_index--) { |
9777e3ce | 1121 | /* suspend the port if the port is not suspended */ |
9777e3ce AX |
1122 | u32 t1, t2; |
1123 | int slot_id; | |
1124 | ||
b0ba9720 | 1125 | t1 = readl(port_array[port_index]); |
9777e3ce AX |
1126 | t2 = xhci_port_state_to_neutral(t1); |
1127 | ||
1128 | if ((t1 & PORT_PE) && !(t1 & PORT_PLS_MASK)) { | |
518e848e | 1129 | xhci_dbg(xhci, "port %d not suspended\n", port_index); |
5233630f | 1130 | slot_id = xhci_find_slot_id_by_port(hcd, xhci, |
518e848e | 1131 | port_index + 1); |
9777e3ce AX |
1132 | if (slot_id) { |
1133 | spin_unlock_irqrestore(&xhci->lock, flags); | |
1134 | xhci_stop_device(xhci, slot_id, 1); | |
1135 | spin_lock_irqsave(&xhci->lock, flags); | |
1136 | } | |
1137 | t2 &= ~PORT_PLS_MASK; | |
1138 | t2 |= PORT_LINK_STROBE | XDEV_U3; | |
20b67cf5 | 1139 | set_bit(port_index, &bus_state->bus_suspended); |
9777e3ce | 1140 | } |
4296c70a | 1141 | /* USB core sets remote wake mask for USB 3.0 hubs, |
84ebc102 | 1142 | * including the USB 3.0 roothub, but only if CONFIG_PM_RUNTIME |
4296c70a SS |
1143 | * is enabled, so also enable remote wake here. |
1144 | */ | |
9777e3ce AX |
1145 | if (hcd->self.root_hub->do_remote_wakeup) { |
1146 | if (t1 & PORT_CONNECT) { | |
1147 | t2 |= PORT_WKOC_E | PORT_WKDISC_E; | |
1148 | t2 &= ~PORT_WKCONN_E; | |
1149 | } else { | |
1150 | t2 |= PORT_WKOC_E | PORT_WKCONN_E; | |
1151 | t2 &= ~PORT_WKDISC_E; | |
1152 | } | |
1153 | } else | |
1154 | t2 &= ~PORT_WAKE_BITS; | |
1155 | ||
1156 | t1 = xhci_port_state_to_neutral(t1); | |
1157 | if (t1 != t2) | |
204b7793 | 1158 | writel(t2, port_array[port_index]); |
9777e3ce AX |
1159 | } |
1160 | hcd->state = HC_STATE_SUSPENDED; | |
20b67cf5 | 1161 | bus_state->next_statechange = jiffies + msecs_to_jiffies(10); |
9777e3ce AX |
1162 | spin_unlock_irqrestore(&xhci->lock, flags); |
1163 | return 0; | |
1164 | } | |
1165 | ||
1166 | int xhci_bus_resume(struct usb_hcd *hcd) | |
1167 | { | |
1168 | struct xhci_hcd *xhci = hcd_to_xhci(hcd); | |
518e848e | 1169 | int max_ports, port_index; |
28ccd296 | 1170 | __le32 __iomem **port_array; |
20b67cf5 | 1171 | struct xhci_bus_state *bus_state; |
9777e3ce AX |
1172 | u32 temp; |
1173 | unsigned long flags; | |
1174 | ||
a0885924 | 1175 | max_ports = xhci_get_ports(hcd, &port_array); |
20b67cf5 | 1176 | bus_state = &xhci->bus_state[hcd_index(hcd)]; |
9777e3ce | 1177 | |
20b67cf5 | 1178 | if (time_before(jiffies, bus_state->next_statechange)) |
9777e3ce AX |
1179 | msleep(5); |
1180 | ||
1181 | spin_lock_irqsave(&xhci->lock, flags); | |
1182 | if (!HCD_HW_ACCESSIBLE(hcd)) { | |
1183 | spin_unlock_irqrestore(&xhci->lock, flags); | |
1184 | return -ESHUTDOWN; | |
1185 | } | |
1186 | ||
1187 | /* delay the irqs */ | |
b0ba9720 | 1188 | temp = readl(&xhci->op_regs->command); |
9777e3ce | 1189 | temp &= ~CMD_EIE; |
204b7793 | 1190 | writel(temp, &xhci->op_regs->command); |
9777e3ce | 1191 | |
518e848e SS |
1192 | port_index = max_ports; |
1193 | while (port_index--) { | |
9777e3ce AX |
1194 | /* Check whether need resume ports. If needed |
1195 | resume port and disable remote wakeup */ | |
9777e3ce AX |
1196 | u32 temp; |
1197 | int slot_id; | |
1198 | ||
b0ba9720 | 1199 | temp = readl(port_array[port_index]); |
9777e3ce AX |
1200 | if (DEV_SUPERSPEED(temp)) |
1201 | temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS); | |
1202 | else | |
1203 | temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS); | |
20b67cf5 | 1204 | if (test_bit(port_index, &bus_state->bus_suspended) && |
9777e3ce AX |
1205 | (temp & PORT_PLS_MASK)) { |
1206 | if (DEV_SUPERSPEED(temp)) { | |
c9682dff AX |
1207 | xhci_set_link_state(xhci, port_array, |
1208 | port_index, XDEV_U0); | |
9777e3ce | 1209 | } else { |
c9682dff AX |
1210 | xhci_set_link_state(xhci, port_array, |
1211 | port_index, XDEV_RESUME); | |
9777e3ce AX |
1212 | |
1213 | spin_unlock_irqrestore(&xhci->lock, flags); | |
1214 | msleep(20); | |
1215 | spin_lock_irqsave(&xhci->lock, flags); | |
1216 | ||
c9682dff AX |
1217 | xhci_set_link_state(xhci, port_array, |
1218 | port_index, XDEV_U0); | |
9777e3ce | 1219 | } |
4f0871a6 AX |
1220 | /* wait for the port to enter U0 and report port link |
1221 | * state change. | |
1222 | */ | |
1223 | spin_unlock_irqrestore(&xhci->lock, flags); | |
1224 | msleep(20); | |
1225 | spin_lock_irqsave(&xhci->lock, flags); | |
1226 | ||
1227 | /* Clear PLC */ | |
d2f52c9e AX |
1228 | xhci_test_and_clear_bit(xhci, port_array, port_index, |
1229 | PORT_PLC); | |
4f0871a6 | 1230 | |
5233630f SS |
1231 | slot_id = xhci_find_slot_id_by_port(hcd, |
1232 | xhci, port_index + 1); | |
9777e3ce AX |
1233 | if (slot_id) |
1234 | xhci_ring_device(xhci, slot_id); | |
1235 | } else | |
204b7793 | 1236 | writel(temp, port_array[port_index]); |
9777e3ce AX |
1237 | } |
1238 | ||
b0ba9720 | 1239 | (void) readl(&xhci->op_regs->command); |
9777e3ce | 1240 | |
20b67cf5 | 1241 | bus_state->next_statechange = jiffies + msecs_to_jiffies(5); |
9777e3ce | 1242 | /* re-enable irqs */ |
b0ba9720 | 1243 | temp = readl(&xhci->op_regs->command); |
9777e3ce | 1244 | temp |= CMD_EIE; |
204b7793 | 1245 | writel(temp, &xhci->op_regs->command); |
b0ba9720 | 1246 | temp = readl(&xhci->op_regs->command); |
9777e3ce AX |
1247 | |
1248 | spin_unlock_irqrestore(&xhci->lock, flags); | |
1249 | return 0; | |
1250 | } | |
1251 | ||
436a3890 | 1252 | #endif /* CONFIG_PM */ |