Blame view
common/usb_hub.c
25.7 KB
23faf2bc9 USB: Separate out... |
1 |
/* |
23faf2bc9 USB: Separate out... |
2 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 * |
1a4596601 Add GPL-2.0+ SPDX... |
17 |
* SPDX-License-Identifier: GPL-2.0+ |
23faf2bc9 USB: Separate out... |
18 19 20 21 22 23 24 25 26 |
*/ /**************************************************************************** * HUB "Driver" * Probes device for being a hub and configurate it */ #include <common.h> #include <command.h> |
054fe48eb dm: usb: Add driv... |
27 |
#include <dm.h> |
79b588872 dm: usb: Adjust u... |
28 |
#include <errno.h> |
cf92e05c0 Move ALLOC_CACHE_... |
29 |
#include <memalign.h> |
23faf2bc9 USB: Separate out... |
30 |
#include <asm/processor.h> |
93ad908c4 usb: do explicit ... |
31 |
#include <asm/unaligned.h> |
23faf2bc9 USB: Separate out... |
32 |
#include <linux/ctype.h> |
c998da0d6 usb: Change power... |
33 |
#include <linux/list.h> |
23faf2bc9 USB: Separate out... |
34 |
#include <asm/byteorder.h> |
3884c98c3 dm: usb: Avoid ti... |
35 36 37 |
#ifdef CONFIG_SANDBOX #include <asm/state.h> #endif |
23faf2bc9 USB: Separate out... |
38 |
#include <asm/unaligned.h> |
054fe48eb dm: usb: Add driv... |
39 40 |
DECLARE_GLOBAL_DATA_PTR; |
23faf2bc9 USB: Separate out... |
41 42 |
#include <usb.h> |
23faf2bc9 USB: Separate out... |
43 |
|
23faf2bc9 USB: Separate out... |
44 |
#define USB_BUFSIZ 512 |
f7f601002 usb: legacy_hub_p... |
45 46 |
#define HUB_SHORT_RESET_TIME 20 #define HUB_LONG_RESET_TIME 200 |
c998da0d6 usb: Change power... |
47 48 49 50 51 52 53 54 |
#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... |
55 |
static LIST_HEAD(usb_scan_list); |
23faf2bc9 USB: Separate out... |
56 |
|
883946e8e usb: hub: identif... |
57 |
__weak void usb_hub_reset_devices(struct usb_hub_device *hub, int port) |
3615a996a USB: usb-hub: Add... |
58 59 60 |
{ return; } |
23faf2bc9 USB: Separate out... |
61 |
|
f34211960 usb: hub: Send co... |
62 63 64 65 |
static inline bool usb_hub_is_superspeed(struct usb_device *hdev) { return hdev->descriptor.bDeviceProtocol == 3; } |
46c1d4933 usb: hub: Add a n... |
66 67 68 69 70 71 72 73 |
#ifdef CONFIG_DM_USB 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... |
74 75 76 77 78 79 80 81 82 83 |
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... |
84 |
#endif |
23faf2bc9 USB: Separate out... |
85 86 |
static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) { |
f34211960 usb: hub: Send co... |
87 88 89 90 |
unsigned short dtype = USB_DT_HUB; if (usb_hub_is_superspeed(dev)) dtype = USB_DT_SS_HUB; |
23faf2bc9 USB: Separate out... |
91 92 |
return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, |
f34211960 usb: hub: Send co... |
93 |
dtype << 8, 0, data, size, USB_CNTL_TIMEOUT); |
23faf2bc9 USB: Separate out... |
94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 |
} 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... |
116 |
int usb_get_port_status(struct usb_device *dev, int port, void *data) |
23faf2bc9 USB: Separate out... |
117 |
{ |
74ffc7cbb usb: hub: Transla... |
118 119 120 |
int ret; ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
23faf2bc9 USB: Separate out... |
121 |
USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, |
53771a490 usb: hub: Revise ... |
122 |
data, sizeof(struct usb_port_status), USB_CNTL_TIMEOUT); |
74ffc7cbb usb: hub: Transla... |
123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 |
#ifdef CONFIG_DM_USB 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... |
152 153 154 155 156 157 158 |
} static void usb_hub_power_on(struct usb_hub_device *hub) { int i; struct usb_device *dev; |
a1a28c6e6 USB: relax usbcor... |
159 |
unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2; |
319418c01 usb: hub: allow p... |
160 |
const char *env; |
23faf2bc9 USB: Separate out... |
161 162 |
dev = hub->pusb_dev; |
0bf796f7a usb: hub: Paralle... |
163 |
|
ceb4972a8 usb: common: Weed... |
164 165 |
debug("enabling power on all ports "); |
23faf2bc9 USB: Separate out... |
166 167 |
for (i = 0; i < dev->maxchild; i++) { usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); |
ceb4972a8 usb: common: Weed... |
168 169 |
debug("port %d returns %lX ", i + 1, dev->status); |
23faf2bc9 USB: Separate out... |
170 |
} |
a1a28c6e6 USB: relax usbcor... |
171 |
|
c998da0d6 usb: Change power... |
172 173 174 175 176 177 178 179 |
#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... |
180 181 182 |
/* * Wait for power to become stable, * plus spec-defined max time for device to connect |
319418c01 usb: hub: allow p... |
183 184 |
* 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... |
185 |
*/ |
00caae6d4 env: Rename geten... |
186 |
env = env_get("usb_pgood_delay"); |
319418c01 usb: hub: allow p... |
187 188 189 190 191 |
if (env) pgood_delay = max(pgood_delay, (unsigned)simple_strtol(env, NULL, 0)); debug("pgood_delay=%dms ", pgood_delay); |
c998da0d6 usb: Change power... |
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 |
/* * 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... |
209 |
} |
dfa96e067 usb: hub: Use 'st... |
210 211 212 |
#ifndef CONFIG_DM_USB static struct usb_hub_device hub_dev[USB_MAX_HUB]; static int usb_hub_index; |
23faf2bc9 USB: Separate out... |
213 214 215 |
void usb_hub_reset(void) { usb_hub_index = 0; |
c998da0d6 usb: Change power... |
216 217 218 |
/* Zero out global hub_dev in case its re-used again */ memset(hub_dev, 0, sizeof(hub_dev)); |
23faf2bc9 USB: Separate out... |
219 220 221 222 223 224 225 226 227 228 229 |
} 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... |
230 |
#endif |
23faf2bc9 USB: Separate out... |
231 232 233 234 235 |
#define MAX_TRIES 5 static inline char *portspeed(int portstatus) { |
55f4b5754 usb: fix: Fixing ... |
236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 |
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... |
254 |
} |
a199a7244 usb: hub: Remove ... |
255 256 257 258 259 260 261 262 263 264 265 266 |
/** * 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... |
267 |
{ |
ad84a42fc usb: legacy_hub_p... |
268 |
int err, tries; |
f57661394 USB: Align buffer... |
269 |
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); |
23faf2bc9 USB: Separate out... |
270 |
unsigned short portstatus, portchange; |
f7f601002 usb: legacy_hub_p... |
271 |
int delay = HUB_SHORT_RESET_TIME; /* start with short reset delay */ |
23faf2bc9 USB: Separate out... |
272 |
|
054fe48eb dm: usb: Add driv... |
273 274 275 276 277 278 279 280 |
#ifdef CONFIG_DM_USB 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... |
281 |
for (tries = 0; tries < MAX_TRIES; tries++) { |
ad84a42fc usb: legacy_hub_p... |
282 283 284 |
err = usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); if (err < 0) return err; |
23faf2bc9 USB: Separate out... |
285 |
|
f7f601002 usb: legacy_hub_p... |
286 |
mdelay(delay); |
23faf2bc9 USB: Separate out... |
287 |
|
f57661394 USB: Align buffer... |
288 |
if (usb_get_port_status(dev, port + 1, portsts) < 0) { |
ceb4972a8 usb: common: Weed... |
289 290 291 |
debug("get_port_status failed status %lX ", dev->status); |
23faf2bc9 USB: Separate out... |
292 293 |
return -1; } |
f57661394 USB: Align buffer... |
294 295 |
portstatus = le16_to_cpu(portsts->wPortStatus); portchange = le16_to_cpu(portsts->wPortChange); |
23faf2bc9 USB: Separate out... |
296 |
|
ceb4972a8 usb: common: Weed... |
297 298 299 |
debug("portstatus %x, change %x, %s ", portstatus, portchange, portspeed(portstatus)); |
23faf2bc9 USB: Separate out... |
300 |
|
ceb4972a8 usb: common: Weed... |
301 302 303 304 305 306 |
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... |
307 |
|
74c0d756d usb: hub: don't c... |
308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 |
/* * 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... |
324 325 326 |
if (portstatus & USB_PORT_STAT_ENABLE) break; |
f7f601002 usb: legacy_hub_p... |
327 328 |
/* Switch to long reset delay for the next round */ delay = HUB_LONG_RESET_TIME; |
23faf2bc9 USB: Separate out... |
329 330 331 |
} if (tries == MAX_TRIES) { |
ceb4972a8 usb: common: Weed... |
332 333 334 335 336 |
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... |
337 338 339 340 341 342 343 |
return -1; } usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); *portstat = portstatus; return 0; } |
79b588872 dm: usb: Adjust u... |
344 |
int usb_hub_port_connect_change(struct usb_device *dev, int port) |
23faf2bc9 USB: Separate out... |
345 |
{ |
f57661394 USB: Align buffer... |
346 |
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); |
23faf2bc9 USB: Separate out... |
347 |
unsigned short portstatus; |
79b588872 dm: usb: Adjust u... |
348 |
int ret, speed; |
23faf2bc9 USB: Separate out... |
349 350 |
/* Check status */ |
79b588872 dm: usb: Adjust u... |
351 352 |
ret = usb_get_port_status(dev, port + 1, portsts); if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
353 354 |
debug("get_port_status failed "); |
79b588872 dm: usb: Adjust u... |
355 |
return ret; |
23faf2bc9 USB: Separate out... |
356 |
} |
f57661394 USB: Align buffer... |
357 |
portstatus = le16_to_cpu(portsts->wPortStatus); |
ceb4972a8 usb: common: Weed... |
358 359 360 361 362 |
debug("portstatus %x, change %x, %s ", portstatus, le16_to_cpu(portsts->wPortChange), portspeed(portstatus)); |
23faf2bc9 USB: Separate out... |
363 364 365 366 367 368 |
/* 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... |
369 370 |
(!(portstatus & USB_PORT_STAT_ENABLE))) || usb_device_has_child_on_port(dev, port)) { |
ceb4972a8 usb: common: Weed... |
371 372 |
debug("usb_disconnect(&hub->children[port]); "); |
23faf2bc9 USB: Separate out... |
373 374 |
/* Return now if nothing is connected */ if (!(portstatus & USB_PORT_STAT_CONNECTION)) |
79b588872 dm: usb: Adjust u... |
375 |
return -ENOTCONN; |
23faf2bc9 USB: Separate out... |
376 |
} |
23faf2bc9 USB: Separate out... |
377 378 |
/* Reset the port */ |
a199a7244 usb: hub: Remove ... |
379 |
ret = usb_hub_port_reset(dev, port, &portstatus); |
79b588872 dm: usb: Adjust u... |
380 |
if (ret < 0) { |
45b9ea1da usb: Stop reset p... |
381 382 383 |
if (ret != -ENXIO) printf("cannot reset port %i!? ", port + 1); |
79b588872 dm: usb: Adjust u... |
384 |
return ret; |
23faf2bc9 USB: Separate out... |
385 |
} |
55f4b5754 usb: fix: Fixing ... |
386 387 |
switch (portstatus & USB_PORT_STAT_SPEED_MASK) { case USB_PORT_STAT_SUPER_SPEED: |
79b588872 dm: usb: Adjust u... |
388 |
speed = USB_SPEED_SUPER; |
55f4b5754 usb: fix: Fixing ... |
389 390 |
break; case USB_PORT_STAT_HIGH_SPEED: |
79b588872 dm: usb: Adjust u... |
391 |
speed = USB_SPEED_HIGH; |
55f4b5754 usb: fix: Fixing ... |
392 393 |
break; case USB_PORT_STAT_LOW_SPEED: |
79b588872 dm: usb: Adjust u... |
394 |
speed = USB_SPEED_LOW; |
55f4b5754 usb: fix: Fixing ... |
395 396 |
break; default: |
79b588872 dm: usb: Adjust u... |
397 |
speed = USB_SPEED_FULL; |
55f4b5754 usb: fix: Fixing ... |
398 399 |
break; } |
23faf2bc9 USB: Separate out... |
400 |
|
054fe48eb dm: usb: Add driv... |
401 402 403 404 405 406 |
#ifdef CONFIG_DM_USB struct udevice *child; ret = usb_scan_device(dev->dev, port + 1, speed, &child); #else struct usb_device *usb; |
79b588872 dm: usb: Adjust u... |
407 408 409 410 411 |
ret = usb_alloc_new_device(dev->controller, &usb); if (ret) { printf("cannot create new device: ret=%d", ret); return ret; } |
23faf2bc9 USB: Separate out... |
412 |
dev->children[port] = usb; |
79b588872 dm: usb: Adjust u... |
413 |
usb->speed = speed; |
23faf2bc9 USB: Separate out... |
414 415 416 |
usb->parent = dev; usb->portnr = port + 1; /* Run it through the hoops (find a driver, etc) */ |
79b588872 dm: usb: Adjust u... |
417 418 |
ret = usb_new_device(usb); if (ret < 0) { |
23faf2bc9 USB: Separate out... |
419 |
/* Woops, disable the port */ |
79b588872 dm: usb: Adjust u... |
420 |
usb_free_device(dev->controller); |
359439d28 usb: Clean up new... |
421 |
dev->children[port] = NULL; |
054fe48eb dm: usb: Add driv... |
422 423 424 |
} #endif if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
425 426 |
debug("hub: disabling port %d ", port + 1); |
23faf2bc9 USB: Separate out... |
427 428 |
usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); } |
79b588872 dm: usb: Adjust u... |
429 430 |
return ret; |
23faf2bc9 USB: Separate out... |
431 |
} |
c998da0d6 usb: Change power... |
432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 |
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... |
466 |
return 0; |
c998da0d6 usb: Change power... |
467 468 469 470 471 472 |
} 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 ... |
473 474 475 476 477 478 479 480 481 |
/* * 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... |
482 483 484 485 486 487 488 489 490 491 492 |
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... |
493 494 495 496 497 |
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... |
498 499 500 501 502 503 |
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... |
504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 |
/* 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 "... |
559 560 |
printf("Port %d over-current occurred %d times ", i + 1, |
c998da0d6 usb: Change power... |
561 562 |
hub->overcurrent_count[i]); } |
c998da0d6 usb: Change power... |
563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 |
/* * 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... |
611 |
|
dfa96e067 usb: hub: Use 'st... |
612 613 614 615 616 617 618 619 620 621 622 623 624 |
static struct usb_hub_device *usb_get_hub_device(struct usb_device *dev) { struct usb_hub_device *hub; #ifndef CONFIG_DM_USB /* "allocate" Hub device */ hub = usb_hub_allocate(); #else hub = dev_get_uclass_priv(dev->dev); #endif return hub; } |
23faf2bc9 USB: Separate out... |
625 626 |
static int usb_hub_configure(struct usb_device *dev) { |
eaf3e613e usb: Use well-kno... |
627 |
int i, length; |
f57661394 USB: Align buffer... |
628 629 |
ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, USB_BUFSIZ); unsigned char *bitmap; |
93ad908c4 usb: do explicit ... |
630 |
short hubCharacteristics; |
23faf2bc9 USB: Separate out... |
631 632 |
struct usb_hub_descriptor *descriptor; struct usb_hub_device *hub; |
0ad0458c7 usb: Correct use ... |
633 |
struct usb_hub_status *hubsts; |
361ad6afc dm: usb: Split hu... |
634 |
int ret; |
23faf2bc9 USB: Separate out... |
635 |
|
dfa96e067 usb: hub: Use 'st... |
636 |
hub = usb_get_hub_device(dev); |
23faf2bc9 USB: Separate out... |
637 |
if (hub == NULL) |
361ad6afc dm: usb: Split hu... |
638 |
return -ENOMEM; |
23faf2bc9 USB: Separate out... |
639 |
hub->pusb_dev = dev; |
dfa96e067 usb: hub: Use 'st... |
640 |
|
23faf2bc9 USB: Separate out... |
641 |
/* Get the the hub descriptor */ |
361ad6afc dm: usb: Split hu... |
642 643 |
ret = usb_get_hub_descriptor(dev, buffer, 4); if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
644 645 646 |
debug("usb_hub_configure: failed to get hub " \ "descriptor, giving up %lX ", dev->status); |
361ad6afc dm: usb: Split hu... |
647 |
return ret; |
23faf2bc9 USB: Separate out... |
648 649 |
} descriptor = (struct usb_hub_descriptor *)buffer; |
b41411954 linux/kernel.h: s... |
650 651 |
length = min_t(int, descriptor->bLength, sizeof(struct usb_hub_descriptor)); |
23faf2bc9 USB: Separate out... |
652 |
|
361ad6afc dm: usb: Split hu... |
653 654 |
ret = usb_get_hub_descriptor(dev, buffer, length); if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
655 656 657 |
debug("usb_hub_configure: failed to get hub " \ "descriptor 2nd giving up %lX ", dev->status); |
361ad6afc dm: usb: Split hu... |
658 |
return ret; |
23faf2bc9 USB: Separate out... |
659 |
} |
eaf3e613e usb: Use well-kno... |
660 |
memcpy((unsigned char *)&hub->desc, buffer, length); |
23faf2bc9 USB: Separate out... |
661 |
/* adjust 16bit values */ |
93ad908c4 usb: do explicit ... |
662 663 664 |
put_unaligned(le16_to_cpu(get_unaligned( &descriptor->wHubCharacteristics)), &hub->desc.wHubCharacteristics); |
23faf2bc9 USB: Separate out... |
665 |
/* set the bitmap */ |
337fc7e66 usb: hub: Change ... |
666 |
bitmap = (unsigned char *)&hub->desc.u.hs.DeviceRemovable[0]; |
23faf2bc9 USB: Separate out... |
667 668 |
/* devices not removable by default */ memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); |
337fc7e66 usb: hub: Change ... |
669 |
bitmap = (unsigned char *)&hub->desc.u.hs.PortPowerCtrlMask[0]; |
23faf2bc9 USB: Separate out... |
670 671 672 |
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 ... |
673 674 |
hub->desc.u.hs.DeviceRemovable[i] = descriptor->u.hs.DeviceRemovable[i]; |
23faf2bc9 USB: Separate out... |
675 676 |
for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) |
337fc7e66 usb: hub: Change ... |
677 678 |
hub->desc.u.hs.PortPowerCtrlMask[i] = descriptor->u.hs.PortPowerCtrlMask[i]; |
23faf2bc9 USB: Separate out... |
679 680 |
dev->maxchild = descriptor->bNbrPorts; |
ceb4972a8 usb: common: Weed... |
681 682 |
debug("%d ports detected ", dev->maxchild); |
23faf2bc9 USB: Separate out... |
683 |
|
93ad908c4 usb: do explicit ... |
684 685 |
hubCharacteristics = get_unaligned(&hub->desc.wHubCharacteristics); switch (hubCharacteristics & HUB_CHAR_LPSM) { |
23faf2bc9 USB: Separate out... |
686 |
case 0x00: |
ceb4972a8 usb: common: Weed... |
687 688 |
debug("ganged power switching "); |
23faf2bc9 USB: Separate out... |
689 690 |
break; case 0x01: |
ceb4972a8 usb: common: Weed... |
691 692 |
debug("individual port power switching "); |
23faf2bc9 USB: Separate out... |
693 694 695 |
break; case 0x02: case 0x03: |
ceb4972a8 usb: common: Weed... |
696 697 |
debug("unknown reserved power switching mode "); |
23faf2bc9 USB: Separate out... |
698 699 |
break; } |
93ad908c4 usb: do explicit ... |
700 |
if (hubCharacteristics & HUB_CHAR_COMPOUND) |
ceb4972a8 usb: common: Weed... |
701 702 |
debug("part of a compound device "); |
23faf2bc9 USB: Separate out... |
703 |
else |
ceb4972a8 usb: common: Weed... |
704 705 |
debug("standalone hub "); |
23faf2bc9 USB: Separate out... |
706 |
|
93ad908c4 usb: do explicit ... |
707 |
switch (hubCharacteristics & HUB_CHAR_OCPM) { |
23faf2bc9 USB: Separate out... |
708 |
case 0x00: |
ceb4972a8 usb: common: Weed... |
709 710 |
debug("global over-current protection "); |
23faf2bc9 USB: Separate out... |
711 712 |
break; case 0x08: |
ceb4972a8 usb: common: Weed... |
713 714 |
debug("individual port over-current protection "); |
23faf2bc9 USB: Separate out... |
715 716 717 |
break; case 0x10: case 0x18: |
ceb4972a8 usb: common: Weed... |
718 719 |
debug("no over-current protection "); |
23faf2bc9 USB: Separate out... |
720 721 |
break; } |
5624dfd5a usb: hub: Parse a... |
722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 |
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... |
779 780 781 782 783 784 |
debug("power on to power good time: %dms ", descriptor->bPwrOn2PwrGood * 2); debug("hub controller current requirement: %dmA ", descriptor->bHubContrCurrent); |
23faf2bc9 USB: Separate out... |
785 786 |
for (i = 0; i < dev->maxchild; i++) |
ceb4972a8 usb: common: Weed... |
787 788 |
debug("port %d is%s removable ", i + 1, |
337fc7e66 usb: hub: Change ... |
789 |
hub->desc.u.hs.DeviceRemovable[(i + 1) / 8] & \ |
ceb4972a8 usb: common: Weed... |
790 |
(1 << ((i + 1) % 8)) ? " not" : ""); |
23faf2bc9 USB: Separate out... |
791 792 |
if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { |
ceb4972a8 usb: common: Weed... |
793 794 795 |
debug("usb_hub_configure: failed to get Status - " \ "too long: %d ", descriptor->bLength); |
361ad6afc dm: usb: Split hu... |
796 |
return -EFBIG; |
23faf2bc9 USB: Separate out... |
797 |
} |
361ad6afc dm: usb: Split hu... |
798 799 |
ret = usb_get_hub_status(dev, buffer); if (ret < 0) { |
ceb4972a8 usb: common: Weed... |
800 801 802 |
debug("usb_hub_configure: failed to get Status %lX ", dev->status); |
361ad6afc dm: usb: Split hu... |
803 |
return ret; |
23faf2bc9 USB: Separate out... |
804 |
} |
23faf2bc9 USB: Separate out... |
805 |
hubsts = (struct usb_hub_status *)buffer; |
ceb4972a8 usb: common: Weed... |
806 807 808 809 810 811 812 813 814 815 816 817 818 |
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... |
819 820 821 |
#ifdef CONFIG_DM_USB /* |
81060bb1c usb: hub: Call us... |
822 823 824 825 826 827 828 829 830 831 832 833 |
* 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... |
834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 |
* 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... |
874 |
usb_hub_power_on(hub); |
3615a996a USB: usb-hub: Add... |
875 876 877 878 879 880 |
/* * 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... |
881 |
usb_hub_reset_devices(hub, i + 1); |
3615a996a USB: usb-hub: Add... |
882 |
|
c998da0d6 usb: Change power... |
883 884 885 886 887 888 889 |
/* * 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... |
890 |
for (i = 0; i < dev->maxchild; i++) { |
c998da0d6 usb: Change power... |
891 |
struct usb_device_scan *usb_scan; |
b6d7852cf usbh/ehci: Increa... |
892 |
|
c998da0d6 usb: Change power... |
893 894 895 896 897 |
usb_scan = calloc(1, sizeof(*usb_scan)); if (!usb_scan) { printf("Can't allocate memory for USB device! "); return -ENOMEM; |
23faf2bc9 USB: Separate out... |
898 |
} |
c998da0d6 usb: Change power... |
899 900 901 902 903 |
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... |
904 |
|
c998da0d6 usb: Change power... |
905 906 907 908 |
/* * And now call the scanning code which loops over the generated list */ ret = usb_device_list_scan(); |
23faf2bc9 USB: Separate out... |
909 |
|
c998da0d6 usb: Change power... |
910 |
return ret; |
23faf2bc9 USB: Separate out... |
911 |
} |
361ad6afc dm: usb: Split hu... |
912 |
static int usb_hub_check(struct usb_device *dev, int ifnum) |
23faf2bc9 USB: Separate out... |
913 914 |
{ struct usb_interface *iface; |
361ad6afc dm: usb: Split hu... |
915 |
struct usb_endpoint_descriptor *ep = NULL; |
23faf2bc9 USB: Separate out... |
916 917 918 919 |
iface = &dev->config.if_desc[ifnum]; /* Is it a hub? */ if (iface->desc.bInterfaceClass != USB_CLASS_HUB) |
361ad6afc dm: usb: Split hu... |
920 |
goto err; |
23faf2bc9 USB: Separate out... |
921 922 923 924 |
/* 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... |
925 |
goto err; |
23faf2bc9 USB: Separate out... |
926 927 |
/* Multiple endpoints? What kind of mutant ninja-hub is this? */ if (iface->desc.bNumEndpoints != 1) |
361ad6afc dm: usb: Split hu... |
928 |
goto err; |
23faf2bc9 USB: Separate out... |
929 930 931 |
ep = &iface->ep_desc[0]; /* Output endpoint? Curiousier and curiousier.. */ if (!(ep->bEndpointAddress & USB_DIR_IN)) |
361ad6afc dm: usb: Split hu... |
932 |
goto err; |
23faf2bc9 USB: Separate out... |
933 934 |
/* If it's not an interrupt endpoint, we'd better punt! */ if ((ep->bmAttributes & 3) != 3) |
361ad6afc dm: usb: Split hu... |
935 |
goto err; |
23faf2bc9 USB: Separate out... |
936 |
/* We found a hub */ |
ceb4972a8 usb: common: Weed... |
937 938 |
debug("USB hub found "); |
361ad6afc dm: usb: Split hu... |
939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 |
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... |
961 962 963 |
ret = usb_hub_configure(dev); return ret; } |
054fe48eb dm: usb: Add driv... |
964 965 966 967 |
#ifdef CONFIG_DM_USB int usb_hub_scan(struct udevice *hub) { |
bcbe3d157 dm: Rename dev_ge... |
968 |
struct usb_device *udev = dev_get_parent_priv(hub); |
054fe48eb dm: usb: Add driv... |
969 970 971 |
return usb_hub_configure(udev); } |
054fe48eb dm: usb: Add driv... |
972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 |
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... |
994 |
.post_bind = dm_scan_fdt_dev, |
054fe48eb dm: usb: Add driv... |
995 996 997 998 |
.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... |
999 |
.per_device_auto_alloc_size = sizeof(struct usb_hub_device), |
054fe48eb dm: usb: Add driv... |
1000 1001 1002 1003 1004 1005 1006 1007 1008 |
}; 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... |
1009 |
U_BOOT_USB_DEVICE(usb_generic_hub, hub_id_table); |
054fe48eb dm: usb: Add driv... |
1010 1011 |
#endif |