Blame view
common/usb_hub.c
25.7 KB
83d290c56 SPDX: Convert all... |
1 |
// SPDX-License-Identifier: GPL-2.0+ |
23faf2bc9 USB: Separate out... |
2 |
/* |
23faf2bc9 USB: Separate out... |
3 4 5 6 7 8 9 10 11 12 13 14 15 16 |
* Most of this source has been derived from the Linux USB * project: * (C) Copyright Linus Torvalds 1999 * (C) Copyright Johannes Erdfelt 1999-2001 * (C) Copyright Andreas Gal 1999 * (C) Copyright Gregory P. Smith 1999 * (C) Copyright Deti Fliegl 1999 (new USB architecture) * (C) Copyright Randy Dunlap 2000 * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id) * (C) Copyright Yggdrasil Computing, Inc. 2000 * (usb_device_id matching changes by Adam J. Richter) * * Adapted for U-Boot: * (C) Copyright 2001 Denis Peter, MPL AG Switzerland |
23faf2bc9 USB: Separate out... |
17 18 19 20 21 22 23 24 25 |
*/ /**************************************************************************** * HUB "Driver" * Probes device for being a hub and configurate it */ #include <common.h> #include <command.h> |
054fe48eb dm: usb: Add driv... |
26 |
#include <dm.h> |
79b588872 dm: usb: Adjust u... |
27 |
#include <errno.h> |
cf92e05c0 Move ALLOC_CACHE_... |
28 |
#include <memalign.h> |
23faf2bc9 USB: Separate out... |
29 |
#include <asm/processor.h> |
93ad908c4 usb: do explicit ... |
30 |
#include <asm/unaligned.h> |
23faf2bc9 USB: Separate out... |
31 |
#include <linux/ctype.h> |
c998da0d6 usb: Change power... |
32 |
#include <linux/list.h> |
23faf2bc9 USB: Separate out... |
33 |
#include <asm/byteorder.h> |
3884c98c3 dm: usb: Avoid ti... |
34 35 36 |
#ifdef CONFIG_SANDBOX #include <asm/state.h> #endif |
23faf2bc9 USB: Separate out... |
37 |
#include <asm/unaligned.h> |
054fe48eb dm: usb: Add driv... |
38 |
|
23faf2bc9 USB: Separate out... |
39 |
#include <usb.h> |
23faf2bc9 USB: Separate out... |
40 |
|
23faf2bc9 USB: Separate out... |
41 |
#define USB_BUFSIZ 512 |
f7f601002 usb: legacy_hub_p... |
42 43 |
#define HUB_SHORT_RESET_TIME 20 #define HUB_LONG_RESET_TIME 200 |
c998da0d6 usb: Change power... |
44 45 46 47 48 49 50 51 |
#define PORT_OVERCURRENT_MAX_SCAN_COUNT 3 struct usb_device_scan { struct usb_device *dev; /* USB hub device to scan */ struct usb_hub_device *hub; /* USB hub struct */ int port; /* USB port to scan */ struct list_head list; }; |
c998da0d6 usb: Change power... |
52 |
static LIST_HEAD(usb_scan_list); |
23faf2bc9 USB: Separate out... |
53 |
|
883946e8e usb: hub: identif... |
54 |
__weak void usb_hub_reset_devices(struct usb_hub_device *hub, int port) |
3615a996a USB: usb-hub: Add... |
55 56 57 |
{ return; } |
23faf2bc9 USB: Separate out... |
58 |
|
f34211960 usb: hub: Send co... |
59 60 61 62 |
static inline bool usb_hub_is_superspeed(struct usb_device *hdev) { return hdev->descriptor.bDeviceProtocol == 3; } |
fd09c205f usb: s/CONFIG_DM_... |
63 |
#if CONFIG_IS_ENABLED(DM_USB) |
46c1d4933 usb: hub: Add a n... |
64 65 66 67 68 69 70 |
bool usb_hub_is_root_hub(struct udevice *hub) { if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB) return true; return false; } |
bbc6f06c0 usb: hub: Support... |
71 72 73 74 75 76 77 78 79 80 |
static int usb_set_hub_depth(struct usb_device *dev, int depth) { if (depth < 0 || depth > 4) return -EINVAL; return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_HUB_DEPTH, USB_DIR_OUT | USB_RT_HUB, depth, 0, NULL, 0, USB_CNTL_TIMEOUT); } |
46c1d4933 usb: hub: Add a n... |
81 |
#endif |
23faf2bc9 USB: Separate out... |
82 83 |
static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) { |
f34211960 usb: hub: Send co... |
84 85 86 87 |
unsigned short dtype = USB_DT_HUB; if (usb_hub_is_superspeed(dev)) dtype = USB_DT_SS_HUB; |
23faf2bc9 USB: Separate out... |
88 89 |
return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, |
f34211960 usb: hub: Send co... |
90 |
dtype << 8, 0, data, size, USB_CNTL_TIMEOUT); |
23faf2bc9 USB: Separate out... |
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 |
} static int usb_clear_port_feature(struct usb_device *dev, int port, int feature) { return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, port, NULL, 0, USB_CNTL_TIMEOUT); } static int usb_set_port_feature(struct usb_device *dev, int port, int feature) { return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), USB_REQ_SET_FEATURE, USB_RT_PORT, feature, port, NULL, 0, USB_CNTL_TIMEOUT); } static int usb_get_hub_status(struct usb_device *dev, void *data) { return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); } |
08f3bb0bc usb: add device c... |
113 |
int usb_get_port_status(struct usb_device *dev, int port, void *data) |
23faf2bc9 USB: Separate out... |
114 |
{ |
74ffc7cbb usb: hub: Transla... |
115 116 117 |
int ret; ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
23faf2bc9 USB: Separate out... |
118 |
USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, |
53771a490 usb: hub: Revise ... |
119 |
data, sizeof(struct usb_port_status), USB_CNTL_TIMEOUT); |
74ffc7cbb usb: hub: Transla... |
120 |
|
fd09c205f usb: s/CONFIG_DM_... |
121 |
#if CONFIG_IS_ENABLED(DM_USB) |
74ffc7cbb usb: hub: Transla... |
122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 |
if (ret < 0) return ret; /* * Translate the USB 3.0 hub port status field into the old version * that U-Boot understands. Do this only when the hub is not root hub. * For root hub, the port status field has already been translated * in the host controller driver (see xhci_submit_root() in xhci.c). * * Note: this only supports driver model. */ if (!usb_hub_is_root_hub(dev->dev) && usb_hub_is_superspeed(dev)) { struct usb_port_status *status = (struct usb_port_status *)data; u16 tmp = (status->wPortStatus) & USB_SS_PORT_STAT_MASK; if (status->wPortStatus & USB_SS_PORT_STAT_POWER) tmp |= USB_PORT_STAT_POWER; if ((status->wPortStatus & USB_SS_PORT_STAT_SPEED) == USB_SS_PORT_STAT_SPEED_5GBPS) tmp |= USB_PORT_STAT_SUPER_SPEED; status->wPortStatus = tmp; } #endif return ret; |
23faf2bc9 USB: Separate out... |
149 150 151 152 153 154 155 |
} static void usb_hub_power_on(struct usb_hub_device *hub) { int i; struct usb_device *dev; |
a1a28c6e6 USB: relax usbcor... |
156 |
unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2; |
319418c01 usb: hub: allow p... |
157 |
const char *env; |
23faf2bc9 USB: Separate out... |
158 159 |
dev = hub->pusb_dev; |
0bf796f7a usb: hub: Paralle... |
160 |
|
ceb4972a8 usb: common: Weed... |
161 162 |
debug("enabling power on all ports "); |
23faf2bc9 USB: Separate out... |
163 164 |
for (i = 0; i < dev->maxchild; i++) { usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); |
ceb4972a8 usb: common: Weed... |
165 166 |
debug("port %d returns %lX ", i + 1, dev->status); |
23faf2bc9 USB: Separate out... |
167 |
} |
a1a28c6e6 USB: relax usbcor... |
168 |
|
c998da0d6 usb: Change power... |
169 170 171 172 173 174 175 176 |
#ifdef CONFIG_SANDBOX /* * Don't set timeout / delay values here. This results * in these values still being reset to 0. */ if (state_get_skip_delays()) return; #endif |
0d437bcaf usb: hub: fix pow... |
177 178 179 |
/* * Wait for power to become stable, * plus spec-defined max time for device to connect |
319418c01 usb: hub: allow p... |
180 181 |
* but allow this time to be increased via env variable as some * devices break the spec and require longer warm-up times |
0d437bcaf usb: hub: fix pow... |
182 |
*/ |
00caae6d4 env: Rename geten... |
183 |
env = env_get("usb_pgood_delay"); |
319418c01 usb: hub: allow p... |
184 185 186 187 188 |
if (env) pgood_delay = max(pgood_delay, (unsigned)simple_strtol(env, NULL, 0)); debug("pgood_delay=%dms ", pgood_delay); |
c998da0d6 usb: Change power... |
189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 |
/* * Do a minimum delay of the larger value of 100ms or pgood_delay * so that the power can stablize before the devices are queried */ hub->query_delay = get_timer(0) + max(100, (int)pgood_delay); /* * Record the power-on timeout here. The max. delay (timeout) * will be done based on this value in the USB port loop in * usb_hub_configure() later. */ hub->connect_timeout = hub->query_delay + 1000; debug("devnum=%d poweron: query_delay=%d connect_timeout=%d ", dev->devnum, max(100, (int)pgood_delay), max(100, (int)pgood_delay) + 1000); |
23faf2bc9 USB: Separate out... |
206 |
} |
fd09c205f usb: s/CONFIG_DM_... |
207 |
#if !CONFIG_IS_ENABLED(DM_USB) |
dfa96e067 usb: hub: Use 'st... |
208 209 |
static struct usb_hub_device hub_dev[USB_MAX_HUB]; static int usb_hub_index; |
23faf2bc9 USB: Separate out... |
210 211 212 |
void usb_hub_reset(void) { usb_hub_index = 0; |
c998da0d6 usb: Change power... |
213 214 215 |
/* Zero out global hub_dev in case its re-used again */ memset(hub_dev, 0, sizeof(hub_dev)); |
23faf2bc9 USB: Separate out... |
216 217 218 219 220 221 222 223 224 225 226 |
} static struct usb_hub_device *usb_hub_allocate(void) { if (usb_hub_index < USB_MAX_HUB) return &hub_dev[usb_hub_index++]; printf("ERROR: USB_MAX_HUB (%d) reached ", USB_MAX_HUB); return NULL; } |
dfa96e067 usb: hub: Use 'st... |
227 |
#endif |
23faf2bc9 USB: Separate out... |
228 229 230 231 232 |
#define MAX_TRIES 5 static inline char *portspeed(int portstatus) { |
55f4b5754 usb: fix: Fixing ... |
233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 |
char *speed_str; switch (portstatus & USB_PORT_STAT_SPEED_MASK) { case USB_PORT_STAT_SUPER_SPEED: speed_str = "5 Gb/s"; break; case USB_PORT_STAT_HIGH_SPEED: speed_str = "480 Mb/s"; break; case USB_PORT_STAT_LOW_SPEED: speed_str = "1.5 Mb/s"; break; default: speed_str = "12 Mb/s"; break; } return speed_str; |
23faf2bc9 USB: Separate out... |
251 |
} |
a199a7244 usb: hub: Remove ... |
252 253 254 255 256 257 258 259 260 261 262 263 |
/** * usb_hub_port_reset() - reset a port given its usb_device pointer * * Reset a hub port and see if a device is present on that port, providing * sufficient time for it to show itself. The port status is returned. * * @dev: USB device to reset * @port: Port number to reset (note ports are numbered from 0 here) * @portstat: Returns port status */ static int usb_hub_port_reset(struct usb_device *dev, int port, unsigned short *portstat) |
23faf2bc9 USB: Separate out... |
264 |
{ |
ad84a42fc usb: legacy_hub_p... |
265 |
int err, tries; |
f57661394 USB: Align buffer... |
266 |
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); |
23faf2bc9 USB: Separate out... |
267 |
unsigned short portstatus, portchange; |
f7f601002 usb: legacy_hub_p... |
268 |
int delay = HUB_SHORT_RESET_TIME; /* start with short reset delay */ |
23faf2bc9 USB: Separate out... |
269 |
|
fd09c205f usb: s/CONFIG_DM_... |
270 |
#if CONFIG_IS_ENABLED(DM_USB) |
054fe48eb dm: usb: Add driv... |
271 272 273 274 275 276 277 |
debug("%s: resetting '%s' port %d... ", __func__, dev->dev->name, port + 1); #else debug("%s: resetting port %d... ", __func__, port + 1); #endif |
23faf2bc9 USB: Separate out... |
278 |
for (tries = 0; tries < MAX_TRIES; tries++) { |
ad84a42fc usb: legacy_hub_p... |
279 280 281 |
err = usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); if (err < 0) return err; |
23faf2bc9 USB: Separate out... |
282 |
|
f7f601002 usb: legacy_hub_p... |
283 |
mdelay(delay); |
23faf2bc9 USB: Separate out... |
284 |
|
f57661394 USB: Align buffer... |
285 |
if (usb_get_port_status(dev, port + 1, portsts) < 0) { |
ceb4972a8 usb: common: Weed... |
286 287 288 |
debug("get_port_status failed status %lX ", dev->status); |
23faf2bc9 USB: Separate out... |
289 290 |
return -1; } |
f57661394 USB: Align buffer... |
291 292 |
portstatus = le16_to_cpu(portsts->wPortStatus); portchange = le16_to_cpu(portsts->wPortChange); |
23faf2bc9 USB: Separate out... |
293 |
|
ceb4972a8 usb: common: Weed... |
294 295 296 |
debug("portstatus %x, change %x, %s ", portstatus, portchange, portspeed(portstatus)); |
23faf2bc9 USB: Separate out... |
297 |
|
ceb4972a8 usb: common: Weed... |
298 299 300 301 302 303 |
debug("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \ " USB_PORT_STAT_ENABLE %d ", (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0, (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0, (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0); |
23faf2bc9 USB: Separate out... |
304 |
|
74c0d756d usb: hub: don't c... |
305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 |
/* * Perhaps we should check for the following here: * - C_CONNECTION hasn't been set. * - CONNECTION is still set. * * Doing so would ensure that the device is still connected * to the bus, and hasn't been unplugged or replaced while the * USB bus reset was going on. * * However, if we do that, then (at least) a San Disk Ultra * USB 3.0 16GB device fails to reset on (at least) an NVIDIA * Tegra Jetson TK1 board. For some reason, the device appears * to briefly drop off the bus when this second bus reset is * executed, yet if we retry this loop, it'll eventually come * back after another reset or two. */ |
23faf2bc9 USB: Separate out... |
321 322 323 |
if (portstatus & USB_PORT_STAT_ENABLE) break; |
f7f601002 usb: legacy_hub_p... |
324 325 |
/* Switch to long reset delay for the next round */ delay = HUB_LONG_RESET_TIME; |
23faf2bc9 USB: Separate out... |
326 327 328 |
} if (tries == MAX_TRIES) { |
ceb4972a8 usb: common: Weed... |
329 330 331 332 333 |
debug("Cannot enable port %i after %i retries, " \ "disabling port. ", port + 1, MAX_TRIES); debug("Maybe the USB cable is bad? "); |
23faf2bc9 USB: Separate out... |
334 335 336 337 338 339 340 |
return -1; } usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); *portstat = portstatus; return 0; } |
79b588872 dm: usb: Adjust u... |
341 |
int usb_hub_port_connect_change(struct usb_device *dev, int port) |
23faf2bc9 USB: Separate out... |
342 |
{ |
f57661394 USB: Align buffer... |
343 |
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); |
23faf2bc9 USB: Separate out... |
344 |
unsigned short portstatus; |
79b588872 dm: usb: Adjust u... |
345 |
int ret, speed; |
23faf2bc9 USB: Separate out... |
346 347 |
/* Check status */ |
79b588872 dm: usb: Adjust u... |
348 349 |
ret = usb_get_port_status(dev, port + 1, portsts); if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
350 351 |
debug("get_port_status failed "); |
79b588872 dm: usb: Adjust u... |
352 |
return ret; |
23faf2bc9 USB: Separate out... |
353 |
} |
f57661394 USB: Align buffer... |
354 |
portstatus = le16_to_cpu(portsts->wPortStatus); |
ceb4972a8 usb: common: Weed... |
355 356 357 358 359 |
debug("portstatus %x, change %x, %s ", portstatus, le16_to_cpu(portsts->wPortChange), portspeed(portstatus)); |
23faf2bc9 USB: Separate out... |
360 361 362 363 364 365 |
/* Clear the connection change status */ usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION); /* Disconnect any existing devices under this port */ if (((!(portstatus & USB_PORT_STAT_CONNECTION)) && |
054fe48eb dm: usb: Add driv... |
366 367 |
(!(portstatus & USB_PORT_STAT_ENABLE))) || usb_device_has_child_on_port(dev, port)) { |
ceb4972a8 usb: common: Weed... |
368 369 |
debug("usb_disconnect(&hub->children[port]); "); |
23faf2bc9 USB: Separate out... |
370 371 |
/* Return now if nothing is connected */ if (!(portstatus & USB_PORT_STAT_CONNECTION)) |
79b588872 dm: usb: Adjust u... |
372 |
return -ENOTCONN; |
23faf2bc9 USB: Separate out... |
373 |
} |
23faf2bc9 USB: Separate out... |
374 375 |
/* Reset the port */ |
a199a7244 usb: hub: Remove ... |
376 |
ret = usb_hub_port_reset(dev, port, &portstatus); |
79b588872 dm: usb: Adjust u... |
377 |
if (ret < 0) { |
45b9ea1da usb: Stop reset p... |
378 379 380 |
if (ret != -ENXIO) printf("cannot reset port %i!? ", port + 1); |
79b588872 dm: usb: Adjust u... |
381 |
return ret; |
23faf2bc9 USB: Separate out... |
382 |
} |
55f4b5754 usb: fix: Fixing ... |
383 384 |
switch (portstatus & USB_PORT_STAT_SPEED_MASK) { case USB_PORT_STAT_SUPER_SPEED: |
79b588872 dm: usb: Adjust u... |
385 |
speed = USB_SPEED_SUPER; |
55f4b5754 usb: fix: Fixing ... |
386 387 |
break; case USB_PORT_STAT_HIGH_SPEED: |
79b588872 dm: usb: Adjust u... |
388 |
speed = USB_SPEED_HIGH; |
55f4b5754 usb: fix: Fixing ... |
389 390 |
break; case USB_PORT_STAT_LOW_SPEED: |
79b588872 dm: usb: Adjust u... |
391 |
speed = USB_SPEED_LOW; |
55f4b5754 usb: fix: Fixing ... |
392 393 |
break; default: |
79b588872 dm: usb: Adjust u... |
394 |
speed = USB_SPEED_FULL; |
55f4b5754 usb: fix: Fixing ... |
395 396 |
break; } |
23faf2bc9 USB: Separate out... |
397 |
|
fd09c205f usb: s/CONFIG_DM_... |
398 |
#if CONFIG_IS_ENABLED(DM_USB) |
054fe48eb dm: usb: Add driv... |
399 400 401 402 403 |
struct udevice *child; ret = usb_scan_device(dev->dev, port + 1, speed, &child); #else struct usb_device *usb; |
79b588872 dm: usb: Adjust u... |
404 405 406 407 408 |
ret = usb_alloc_new_device(dev->controller, &usb); if (ret) { printf("cannot create new device: ret=%d", ret); return ret; } |
23faf2bc9 USB: Separate out... |
409 |
dev->children[port] = usb; |
79b588872 dm: usb: Adjust u... |
410 |
usb->speed = speed; |
23faf2bc9 USB: Separate out... |
411 412 413 |
usb->parent = dev; usb->portnr = port + 1; /* Run it through the hoops (find a driver, etc) */ |
79b588872 dm: usb: Adjust u... |
414 415 |
ret = usb_new_device(usb); if (ret < 0) { |
23faf2bc9 USB: Separate out... |
416 |
/* Woops, disable the port */ |
79b588872 dm: usb: Adjust u... |
417 |
usb_free_device(dev->controller); |
359439d28 usb: Clean up new... |
418 |
dev->children[port] = NULL; |
054fe48eb dm: usb: Add driv... |
419 420 421 |
} #endif if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
422 423 |
debug("hub: disabling port %d ", port + 1); |
23faf2bc9 USB: Separate out... |
424 425 |
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); } |
79b588872 dm: usb: Adjust u... |
426 427 |
return ret; |
23faf2bc9 USB: Separate out... |
428 |
} |
c998da0d6 usb: Change power... |
429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 |
static int usb_scan_port(struct usb_device_scan *usb_scan) { ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); unsigned short portstatus; unsigned short portchange; struct usb_device *dev; struct usb_hub_device *hub; int ret = 0; int i; dev = usb_scan->dev; hub = usb_scan->hub; i = usb_scan->port; /* * Don't talk to the device before the query delay is expired. * This is needed for voltages to stabalize. */ if (get_timer(0) < hub->query_delay) return 0; ret = usb_get_port_status(dev, i + 1, portsts); if (ret < 0) { debug("get_port_status failed "); if (get_timer(0) >= hub->connect_timeout) { debug("devnum=%d port=%d: timeout ", dev->devnum, i + 1); /* Remove this device from scanning list */ list_del(&usb_scan->list); free(usb_scan); return 0; } |
d81db48d4 usb: hub: Don't c... |
463 |
return 0; |
c998da0d6 usb: Change power... |
464 465 466 467 468 469 |
} portstatus = le16_to_cpu(portsts->wPortStatus); portchange = le16_to_cpu(portsts->wPortChange); debug("Port %d Status %X Change %X ", i + 1, portstatus, portchange); |
f7a9e5dd0 usb: hub: Update ... |
470 471 472 473 474 475 476 477 478 |
/* * No connection change happened, wait a bit more. * * For some situation, the hub reports no connection change but a * device is connected to the port (eg: CCS bit is set but CSC is not * in the PORTSC register of a root hub), ignore such case. */ if (!(portchange & USB_PORT_STAT_C_CONNECTION) && !(portstatus & USB_PORT_STAT_CONNECTION)) { |
c998da0d6 usb: Change power... |
479 480 481 482 483 484 485 486 487 488 489 |
if (get_timer(0) >= hub->connect_timeout) { debug("devnum=%d port=%d: timeout ", dev->devnum, i + 1); /* Remove this device from scanning list */ list_del(&usb_scan->list); free(usb_scan); return 0; } return 0; } |
b90203526 usb: hub: Clear p... |
490 491 492 493 494 |
if (portchange & USB_PORT_STAT_C_RESET) { debug("port %d reset change ", i + 1); usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET); } |
061895fbe usb: hub: Clear B... |
495 496 497 498 499 500 |
if ((portchange & USB_SS_PORT_STAT_C_BH_RESET) && usb_hub_is_superspeed(dev)) { debug("port %d BH reset change ", i + 1); usb_clear_port_feature(dev, i + 1, USB_SS_PORT_FEAT_C_BH_RESET); } |
c998da0d6 usb: Change power... |
501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 |
/* A new USB device is ready at this point */ debug("devnum=%d port=%d: USB dev found ", dev->devnum, i + 1); usb_hub_port_connect_change(dev, i); if (portchange & USB_PORT_STAT_C_ENABLE) { debug("port %d enable change, status %x ", i + 1, portstatus); usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE); /* * The following hack causes a ghost device problem * to Faraday EHCI */ #ifndef CONFIG_USB_EHCI_FARADAY /* * EM interference sometimes causes bad shielded USB * devices to be shutdown by the hub, this hack enables * them again. Works at least with mouse driver */ if (!(portstatus & USB_PORT_STAT_ENABLE) && (portstatus & USB_PORT_STAT_CONNECTION) && usb_device_has_child_on_port(dev, i)) { debug("already running port %i disabled by hub (EMI?), re-enabling... ", i + 1); usb_hub_port_connect_change(dev, i); } #endif } if (portstatus & USB_PORT_STAT_SUSPEND) { debug("port %d suspend change ", i + 1); usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_SUSPEND); } if (portchange & USB_PORT_STAT_C_OVERCURRENT) { debug("port %d over-current change ", i + 1); usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_OVER_CURRENT); /* Only power-on this one port */ usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); hub->overcurrent_count[i]++; /* * If the max-scan-count is not reached, return without removing * the device from scan-list. This will re-issue a new scan. */ if (hub->overcurrent_count[i] <= PORT_OVERCURRENT_MAX_SCAN_COUNT) return 0; /* Otherwise the device will get removed */ |
eae4b2b67 Fix spelling of "... |
556 557 |
printf("Port %d over-current occurred %d times ", i + 1, |
c998da0d6 usb: Change power... |
558 559 |
hub->overcurrent_count[i]); } |
c998da0d6 usb: Change power... |
560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 |
/* * We're done with this device, so let's remove this device from * scanning list */ list_del(&usb_scan->list); free(usb_scan); return 0; } static int usb_device_list_scan(void) { struct usb_device_scan *usb_scan; struct usb_device_scan *tmp; static int running; int ret = 0; /* Only run this loop once for each controller */ if (running) return 0; running = 1; while (1) { /* We're done, once the list is empty again */ if (list_empty(&usb_scan_list)) goto out; list_for_each_entry_safe(usb_scan, tmp, &usb_scan_list, list) { int ret; /* Scan this port */ ret = usb_scan_port(usb_scan); if (ret) goto out; } } out: /* * This USB controller has finished scanning all its connected * USB devices. Set "running" back to 0, so that other USB controllers * will scan their devices too. */ running = 0; return ret; } |
23faf2bc9 USB: Separate out... |
608 |
|
dfa96e067 usb: hub: Use 'st... |
609 610 611 |
static struct usb_hub_device *usb_get_hub_device(struct usb_device *dev) { struct usb_hub_device *hub; |
fd09c205f usb: s/CONFIG_DM_... |
612 |
#if !CONFIG_IS_ENABLED(DM_USB) |
dfa96e067 usb: hub: Use 'st... |
613 614 615 616 617 618 619 620 |
/* "allocate" Hub device */ hub = usb_hub_allocate(); #else hub = dev_get_uclass_priv(dev->dev); #endif return hub; } |
23faf2bc9 USB: Separate out... |
621 622 |
static int usb_hub_configure(struct usb_device *dev) { |
eaf3e613e usb: Use well-kno... |
623 |
int i, length; |
f57661394 USB: Align buffer... |
624 625 |
ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, USB_BUFSIZ); unsigned char *bitmap; |
93ad908c4 usb: do explicit ... |
626 |
short hubCharacteristics; |
23faf2bc9 USB: Separate out... |
627 628 |
struct usb_hub_descriptor *descriptor; struct usb_hub_device *hub; |
0ad0458c7 usb: Correct use ... |
629 |
struct usb_hub_status *hubsts; |
361ad6afc dm: usb: Split hu... |
630 |
int ret; |
23faf2bc9 USB: Separate out... |
631 |
|
dfa96e067 usb: hub: Use 'st... |
632 |
hub = usb_get_hub_device(dev); |
23faf2bc9 USB: Separate out... |
633 |
if (hub == NULL) |
361ad6afc dm: usb: Split hu... |
634 |
return -ENOMEM; |
23faf2bc9 USB: Separate out... |
635 |
hub->pusb_dev = dev; |
dfa96e067 usb: hub: Use 'st... |
636 |
|
23faf2bc9 USB: Separate out... |
637 |
/* Get the the hub descriptor */ |
361ad6afc dm: usb: Split hu... |
638 639 |
ret = usb_get_hub_descriptor(dev, buffer, 4); if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
640 641 642 |
debug("usb_hub_configure: failed to get hub " \ "descriptor, giving up %lX ", dev->status); |
361ad6afc dm: usb: Split hu... |
643 |
return ret; |
23faf2bc9 USB: Separate out... |
644 645 |
} descriptor = (struct usb_hub_descriptor *)buffer; |
b41411954 linux/kernel.h: s... |
646 647 |
length = min_t(int, descriptor->bLength, sizeof(struct usb_hub_descriptor)); |
23faf2bc9 USB: Separate out... |
648 |
|
361ad6afc dm: usb: Split hu... |
649 650 |
ret = usb_get_hub_descriptor(dev, buffer, length); if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
651 652 653 |
debug("usb_hub_configure: failed to get hub " \ "descriptor 2nd giving up %lX ", dev->status); |
361ad6afc dm: usb: Split hu... |
654 |
return ret; |
23faf2bc9 USB: Separate out... |
655 |
} |
eaf3e613e usb: Use well-kno... |
656 |
memcpy((unsigned char *)&hub->desc, buffer, length); |
23faf2bc9 USB: Separate out... |
657 |
/* adjust 16bit values */ |
93ad908c4 usb: do explicit ... |
658 659 660 |
put_unaligned(le16_to_cpu(get_unaligned( &descriptor->wHubCharacteristics)), &hub->desc.wHubCharacteristics); |
23faf2bc9 USB: Separate out... |
661 |
/* set the bitmap */ |
337fc7e66 usb: hub: Change ... |
662 |
bitmap = (unsigned char *)&hub->desc.u.hs.DeviceRemovable[0]; |
23faf2bc9 USB: Separate out... |
663 664 |
/* devices not removable by default */ memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); |
337fc7e66 usb: hub: Change ... |
665 |
bitmap = (unsigned char *)&hub->desc.u.hs.PortPowerCtrlMask[0]; |
23faf2bc9 USB: Separate out... |
666 667 668 |
memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */ for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) |
337fc7e66 usb: hub: Change ... |
669 670 |
hub->desc.u.hs.DeviceRemovable[i] = descriptor->u.hs.DeviceRemovable[i]; |
23faf2bc9 USB: Separate out... |
671 672 |
for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) |
337fc7e66 usb: hub: Change ... |
673 674 |
hub->desc.u.hs.PortPowerCtrlMask[i] = descriptor->u.hs.PortPowerCtrlMask[i]; |
23faf2bc9 USB: Separate out... |
675 676 |
dev->maxchild = descriptor->bNbrPorts; |
ceb4972a8 usb: common: Weed... |
677 678 |
debug("%d ports detected ", dev->maxchild); |
23faf2bc9 USB: Separate out... |
679 |
|
93ad908c4 usb: do explicit ... |
680 681 |
hubCharacteristics = get_unaligned(&hub->desc.wHubCharacteristics); switch (hubCharacteristics & HUB_CHAR_LPSM) { |
23faf2bc9 USB: Separate out... |
682 |
case 0x00: |
ceb4972a8 usb: common: Weed... |
683 684 |
debug("ganged power switching "); |
23faf2bc9 USB: Separate out... |
685 686 |
break; case 0x01: |
ceb4972a8 usb: common: Weed... |
687 688 |
debug("individual port power switching "); |
23faf2bc9 USB: Separate out... |
689 690 691 |
break; case 0x02: case 0x03: |
ceb4972a8 usb: common: Weed... |
692 693 |
debug("unknown reserved power switching mode "); |
23faf2bc9 USB: Separate out... |
694 695 |
break; } |
93ad908c4 usb: do explicit ... |
696 |
if (hubCharacteristics & HUB_CHAR_COMPOUND) |
ceb4972a8 usb: common: Weed... |
697 698 |
debug("part of a compound device "); |
23faf2bc9 USB: Separate out... |
699 |
else |
ceb4972a8 usb: common: Weed... |
700 701 |
debug("standalone hub "); |
23faf2bc9 USB: Separate out... |
702 |
|
93ad908c4 usb: do explicit ... |
703 |
switch (hubCharacteristics & HUB_CHAR_OCPM) { |
23faf2bc9 USB: Separate out... |
704 |
case 0x00: |
ceb4972a8 usb: common: Weed... |
705 706 |
debug("global over-current protection "); |
23faf2bc9 USB: Separate out... |
707 708 |
break; case 0x08: |
ceb4972a8 usb: common: Weed... |
709 710 |
debug("individual port over-current protection "); |
23faf2bc9 USB: Separate out... |
711 712 713 |
break; case 0x10: case 0x18: |
ceb4972a8 usb: common: Weed... |
714 715 |
debug("no over-current protection "); |
23faf2bc9 USB: Separate out... |
716 717 |
break; } |
5624dfd5a usb: hub: Parse a... |
718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 |
switch (dev->descriptor.bDeviceProtocol) { case USB_HUB_PR_FS: break; case USB_HUB_PR_HS_SINGLE_TT: debug("Single TT "); break; case USB_HUB_PR_HS_MULTI_TT: ret = usb_set_interface(dev, 0, 1); if (ret == 0) { debug("TT per port "); hub->tt.multi = true; } else { debug("Using single TT (err %d) ", ret); } break; case USB_HUB_PR_SS: /* USB 3.0 hubs don't have a TT */ break; default: debug("Unrecognized hub protocol %d ", dev->descriptor.bDeviceProtocol); break; } /* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */ switch (hubCharacteristics & HUB_CHAR_TTTT) { case HUB_TTTT_8_BITS: if (dev->descriptor.bDeviceProtocol != 0) { hub->tt.think_time = 666; debug("TT requires at most %d FS bit times (%d ns) ", 8, hub->tt.think_time); } break; case HUB_TTTT_16_BITS: hub->tt.think_time = 666 * 2; debug("TT requires at most %d FS bit times (%d ns) ", 16, hub->tt.think_time); break; case HUB_TTTT_24_BITS: hub->tt.think_time = 666 * 3; debug("TT requires at most %d FS bit times (%d ns) ", 24, hub->tt.think_time); break; case HUB_TTTT_32_BITS: hub->tt.think_time = 666 * 4; debug("TT requires at most %d FS bit times (%d ns) ", 32, hub->tt.think_time); break; } |
ceb4972a8 usb: common: Weed... |
775 776 777 778 779 780 |
debug("power on to power good time: %dms ", descriptor->bPwrOn2PwrGood * 2); debug("hub controller current requirement: %dmA ", descriptor->bHubContrCurrent); |
23faf2bc9 USB: Separate out... |
781 782 |
for (i = 0; i < dev->maxchild; i++) |
ceb4972a8 usb: common: Weed... |
783 784 |
debug("port %d is%s removable ", i + 1, |
337fc7e66 usb: hub: Change ... |
785 |
hub->desc.u.hs.DeviceRemovable[(i + 1) / 8] & \ |
ceb4972a8 usb: common: Weed... |
786 |
(1 << ((i + 1) % 8)) ? " not" : ""); |
23faf2bc9 USB: Separate out... |
787 788 |
if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { |
ceb4972a8 usb: common: Weed... |
789 790 791 |
debug("usb_hub_configure: failed to get Status - " \ "too long: %d ", descriptor->bLength); |
361ad6afc dm: usb: Split hu... |
792 |
return -EFBIG; |
23faf2bc9 USB: Separate out... |
793 |
} |
361ad6afc dm: usb: Split hu... |
794 795 |
ret = usb_get_hub_status(dev, buffer); if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
796 797 798 |
debug("usb_hub_configure: failed to get Status %lX ", dev->status); |
361ad6afc dm: usb: Split hu... |
799 |
return ret; |
23faf2bc9 USB: Separate out... |
800 |
} |
23faf2bc9 USB: Separate out... |
801 |
hubsts = (struct usb_hub_status *)buffer; |
ceb4972a8 usb: common: Weed... |
802 803 804 805 806 807 808 809 810 811 812 813 814 |
debug("get_hub_status returned status %X, change %X ", le16_to_cpu(hubsts->wHubStatus), le16_to_cpu(hubsts->wHubChange)); debug("local power source is %s ", (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \ "lost (inactive)" : "good"); debug("%sover-current condition exists ", (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \ "" : "no "); |
bbc6f06c0 usb: hub: Support... |
815 |
|
fd09c205f usb: s/CONFIG_DM_... |
816 |
#if CONFIG_IS_ENABLED(DM_USB) |
bbc6f06c0 usb: hub: Support... |
817 |
/* |
81060bb1c usb: hub: Call us... |
818 819 820 821 822 823 824 825 826 827 828 829 |
* Update USB host controller's internal representation of this hub * after the hub descriptor is fetched. */ ret = usb_update_hub_device(dev); if (ret < 0 && ret != -ENOSYS) { debug("%s: failed to update hub device for HCD (%x) ", __func__, ret); return ret; } /* |
bbc6f06c0 usb: hub: Support... |
830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 |
* A maximum of seven tiers are allowed in a USB topology, and the * root hub occupies the first tier. The last tier ends with a normal * USB device. USB 3.0 hubs use a 20-bit field called 'route string' * to route packets to the designated downstream port. The hub uses a * hub depth value multiplied by four as an offset into the 'route * string' to locate the bits it uses to determine the downstream * port number. */ if (usb_hub_is_root_hub(dev->dev)) { hub->hub_depth = -1; } else { struct udevice *hdev; int depth = 0; hdev = dev->dev->parent; while (!usb_hub_is_root_hub(hdev)) { depth++; hdev = hdev->parent; } hub->hub_depth = depth; if (usb_hub_is_superspeed(dev)) { debug("set hub (%p) depth to %d ", dev, depth); /* * This request sets the value that the hub uses to * determine the index into the 'route string index' * for this hub. */ ret = usb_set_hub_depth(dev, depth); if (ret < 0) { debug("%s: failed to set hub depth (%lX) ", __func__, dev->status); return ret; } } } #endif |
23faf2bc9 USB: Separate out... |
870 |
usb_hub_power_on(hub); |
3615a996a USB: usb-hub: Add... |
871 872 873 874 875 876 |
/* * Reset any devices that may be in a bad state when applying * the power. This is a __weak function. Resetting of the devices * should occur in the board file of the device. */ for (i = 0; i < dev->maxchild; i++) |
883946e8e usb: hub: identif... |
877 |
usb_hub_reset_devices(hub, i + 1); |
3615a996a USB: usb-hub: Add... |
878 |
|
c998da0d6 usb: Change power... |
879 880 881 882 883 884 885 |
/* * Only add the connected USB devices, including potential hubs, * to a scanning list. This list will get scanned and devices that * are detected (either via port connected or via port timeout) * will get removed from this list. Scanning of the devices on this * list will continue until all devices are removed. */ |
23faf2bc9 USB: Separate out... |
886 |
for (i = 0; i < dev->maxchild; i++) { |
c998da0d6 usb: Change power... |
887 |
struct usb_device_scan *usb_scan; |
b6d7852cf usbh/ehci: Increa... |
888 |
|
c998da0d6 usb: Change power... |
889 890 891 892 893 |
usb_scan = calloc(1, sizeof(*usb_scan)); if (!usb_scan) { printf("Can't allocate memory for USB device! "); return -ENOMEM; |
23faf2bc9 USB: Separate out... |
894 |
} |
c998da0d6 usb: Change power... |
895 896 897 898 899 |
usb_scan->dev = dev; usb_scan->hub = hub; usb_scan->port = i; list_add_tail(&usb_scan->list, &usb_scan_list); } |
23faf2bc9 USB: Separate out... |
900 |
|
c998da0d6 usb: Change power... |
901 902 903 904 |
/* * And now call the scanning code which loops over the generated list */ ret = usb_device_list_scan(); |
23faf2bc9 USB: Separate out... |
905 |
|
c998da0d6 usb: Change power... |
906 |
return ret; |
23faf2bc9 USB: Separate out... |
907 |
} |
361ad6afc dm: usb: Split hu... |
908 |
static int usb_hub_check(struct usb_device *dev, int ifnum) |
23faf2bc9 USB: Separate out... |
909 910 |
{ struct usb_interface *iface; |
361ad6afc dm: usb: Split hu... |
911 |
struct usb_endpoint_descriptor *ep = NULL; |
23faf2bc9 USB: Separate out... |
912 913 914 915 |
iface = &dev->config.if_desc[ifnum]; /* Is it a hub? */ if (iface->desc.bInterfaceClass != USB_CLASS_HUB) |
361ad6afc dm: usb: Split hu... |
916 |
goto err; |
23faf2bc9 USB: Separate out... |
917 918 919 920 |
/* Some hubs have a subclass of 1, which AFAICT according to the */ /* specs is not defined, but it works */ if ((iface->desc.bInterfaceSubClass != 0) && (iface->desc.bInterfaceSubClass != 1)) |
361ad6afc dm: usb: Split hu... |
921 |
goto err; |
23faf2bc9 USB: Separate out... |
922 923 |
/* Multiple endpoints? What kind of mutant ninja-hub is this? */ if (iface->desc.bNumEndpoints != 1) |
361ad6afc dm: usb: Split hu... |
924 |
goto err; |
23faf2bc9 USB: Separate out... |
925 926 927 |
ep = &iface->ep_desc[0]; /* Output endpoint? Curiousier and curiousier.. */ if (!(ep->bEndpointAddress & USB_DIR_IN)) |
361ad6afc dm: usb: Split hu... |
928 |
goto err; |
23faf2bc9 USB: Separate out... |
929 930 |
/* If it's not an interrupt endpoint, we'd better punt! */ if ((ep->bmAttributes & 3) != 3) |
361ad6afc dm: usb: Split hu... |
931 |
goto err; |
23faf2bc9 USB: Separate out... |
932 |
/* We found a hub */ |
ceb4972a8 usb: common: Weed... |
933 934 |
debug("USB hub found "); |
361ad6afc dm: usb: Split hu... |
935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 |
return 0; err: debug("USB hub not found: bInterfaceClass=%d, bInterfaceSubClass=%d, bNumEndpoints=%d ", iface->desc.bInterfaceClass, iface->desc.bInterfaceSubClass, iface->desc.bNumEndpoints); if (ep) { debug(" bEndpointAddress=%#x, bmAttributes=%d", ep->bEndpointAddress, ep->bmAttributes); } return -ENOENT; } int usb_hub_probe(struct usb_device *dev, int ifnum) { int ret; ret = usb_hub_check(dev, ifnum); if (ret) return 0; |
23faf2bc9 USB: Separate out... |
957 958 959 |
ret = usb_hub_configure(dev); return ret; } |
054fe48eb dm: usb: Add driv... |
960 |
|
fd09c205f usb: s/CONFIG_DM_... |
961 |
#if CONFIG_IS_ENABLED(DM_USB) |
054fe48eb dm: usb: Add driv... |
962 963 |
int usb_hub_scan(struct udevice *hub) { |
bcbe3d157 dm: Rename dev_ge... |
964 |
struct usb_device *udev = dev_get_parent_priv(hub); |
054fe48eb dm: usb: Add driv... |
965 966 967 |
return usb_hub_configure(udev); } |
054fe48eb dm: usb: Add driv... |
968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 |
static int usb_hub_post_probe(struct udevice *dev) { debug("%s ", __func__); return usb_hub_scan(dev); } static const struct udevice_id usb_hub_ids[] = { { .compatible = "usb-hub" }, { } }; U_BOOT_DRIVER(usb_generic_hub) = { .name = "usb_hub", .id = UCLASS_USB_HUB, .of_match = usb_hub_ids, .flags = DM_FLAG_ALLOC_PRIV_DMA, }; UCLASS_DRIVER(usb_hub) = { .id = UCLASS_USB_HUB, .name = "usb_hub", |
911954859 dm: Use dm_scan_f... |
990 |
.post_bind = dm_scan_fdt_dev, |
054fe48eb dm: usb: Add driv... |
991 992 993 994 |
.post_probe = usb_hub_post_probe, .child_pre_probe = usb_child_pre_probe, .per_child_auto_alloc_size = sizeof(struct usb_device), .per_child_platdata_auto_alloc_size = sizeof(struct usb_dev_platdata), |
dfa96e067 usb: hub: Use 'st... |
995 |
.per_device_auto_alloc_size = sizeof(struct usb_hub_device), |
054fe48eb dm: usb: Add driv... |
996 997 998 999 1000 1001 1002 1003 1004 |
}; static const struct usb_device_id hub_id_table[] = { { .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS, .bDeviceClass = USB_CLASS_HUB }, { } /* Terminating entry */ }; |
abb59cffc dm: usb: Adjust t... |
1005 |
U_BOOT_USB_DEVICE(usb_generic_hub, hub_id_table); |
054fe48eb dm: usb: Add driv... |
1006 1007 |
#endif |