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Marek Vasut6da5af32012-02-13 18:58:17 +00001/*
Marek Vasut6da5af32012-02-13 18:58:17 +00002 * Most of this source has been derived from the Linux USB
3 * project:
4 * (C) Copyright Linus Torvalds 1999
5 * (C) Copyright Johannes Erdfelt 1999-2001
6 * (C) Copyright Andreas Gal 1999
7 * (C) Copyright Gregory P. Smith 1999
8 * (C) Copyright Deti Fliegl 1999 (new USB architecture)
9 * (C) Copyright Randy Dunlap 2000
10 * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id)
11 * (C) Copyright Yggdrasil Computing, Inc. 2000
12 * (usb_device_id matching changes by Adam J. Richter)
13 *
14 * Adapted for U-Boot:
15 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
16 *
Wolfgang Denkd79de1d2013-07-08 09:37:19 +020017 * SPDX-License-Identifier: GPL-2.0+
Marek Vasut6da5af32012-02-13 18:58:17 +000018 */
19
20/****************************************************************************
21 * HUB "Driver"
22 * Probes device for being a hub and configurate it
23 */
24
25#include <common.h>
26#include <command.h>
Simon Glass6ab43b62015-03-25 12:22:10 -060027#include <dm.h>
Simon Glassd1461132015-03-25 12:22:01 -060028#include <errno.h>
Simon Glass2dd337a2015-09-02 17:24:58 -060029#include <memalign.h>
Marek Vasut6da5af32012-02-13 18:58:17 +000030#include <asm/processor.h>
Lucas Stach835e11e2012-09-06 08:00:13 +020031#include <asm/unaligned.h>
Marek Vasut6da5af32012-02-13 18:58:17 +000032#include <linux/ctype.h>
Stefan Roeseed4823a2016-03-15 13:59:15 +010033#include <linux/list.h>
Marek Vasut6da5af32012-02-13 18:58:17 +000034#include <asm/byteorder.h>
Simon Glass2d7c4992015-11-08 23:47:44 -070035#ifdef CONFIG_SANDBOX
36#include <asm/state.h>
37#endif
Marek Vasut6da5af32012-02-13 18:58:17 +000038#include <asm/unaligned.h>
Simon Glass6ab43b62015-03-25 12:22:10 -060039
40DECLARE_GLOBAL_DATA_PTR;
Marek Vasut6da5af32012-02-13 18:58:17 +000041
42#include <usb.h>
Marek Vasut6da5af32012-02-13 18:58:17 +000043
Marek Vasut6da5af32012-02-13 18:58:17 +000044#define USB_BUFSIZ 512
45
Stefan Roese3678cb52016-03-15 13:59:12 +010046#define HUB_SHORT_RESET_TIME 20
47#define HUB_LONG_RESET_TIME 200
48
Stefan Roeseed4823a2016-03-15 13:59:15 +010049#define PORT_OVERCURRENT_MAX_SCAN_COUNT 3
50
51struct usb_device_scan {
52 struct usb_device *dev; /* USB hub device to scan */
53 struct usb_hub_device *hub; /* USB hub struct */
54 int port; /* USB port to scan */
55 struct list_head list;
56};
57
Stefan Roeseed4823a2016-03-15 13:59:15 +010058static LIST_HEAD(usb_scan_list);
Marek Vasut6da5af32012-02-13 18:58:17 +000059
Philipp Tomsich693f4922017-11-22 17:15:17 +010060__weak void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
Dan Murphy2666bb12013-08-01 14:06:01 -050061{
62 return;
63}
Marek Vasut6da5af32012-02-13 18:58:17 +000064
Bin Menge8930c42017-07-19 21:49:58 +080065static inline bool usb_hub_is_superspeed(struct usb_device *hdev)
66{
67 return hdev->descriptor.bDeviceProtocol == 3;
68}
69
Bin Meng5ecfd5d2017-07-19 21:51:11 +080070#ifdef CONFIG_DM_USB
71bool usb_hub_is_root_hub(struct udevice *hub)
72{
73 if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB)
74 return true;
75
76 return false;
77}
Bin Mengdab74372017-07-19 21:51:13 +080078
79static int usb_set_hub_depth(struct usb_device *dev, int depth)
80{
81 if (depth < 0 || depth > 4)
82 return -EINVAL;
83
84 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
85 USB_REQ_SET_HUB_DEPTH, USB_DIR_OUT | USB_RT_HUB,
86 depth, 0, NULL, 0, USB_CNTL_TIMEOUT);
87}
Bin Meng5ecfd5d2017-07-19 21:51:11 +080088#endif
89
Marek Vasut6da5af32012-02-13 18:58:17 +000090static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
91{
Bin Menge8930c42017-07-19 21:49:58 +080092 unsigned short dtype = USB_DT_HUB;
93
94 if (usb_hub_is_superspeed(dev))
95 dtype = USB_DT_SS_HUB;
96
Marek Vasut6da5af32012-02-13 18:58:17 +000097 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
98 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB,
Bin Menge8930c42017-07-19 21:49:58 +080099 dtype << 8, 0, data, size, USB_CNTL_TIMEOUT);
Marek Vasut6da5af32012-02-13 18:58:17 +0000100}
101
102static int usb_clear_port_feature(struct usb_device *dev, int port, int feature)
103{
104 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
105 USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature,
106 port, NULL, 0, USB_CNTL_TIMEOUT);
107}
108
109static int usb_set_port_feature(struct usb_device *dev, int port, int feature)
110{
111 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
112 USB_REQ_SET_FEATURE, USB_RT_PORT, feature,
113 port, NULL, 0, USB_CNTL_TIMEOUT);
114}
115
116static int usb_get_hub_status(struct usb_device *dev, void *data)
117{
118 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
119 USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0,
120 data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT);
121}
122
Vincent Palatin0489ee32015-05-04 11:30:54 -0600123int usb_get_port_status(struct usb_device *dev, int port, void *data)
Marek Vasut6da5af32012-02-13 18:58:17 +0000124{
Bin Meng2b51a1b2017-07-19 21:51:12 +0800125 int ret;
126
127 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
Marek Vasut6da5af32012-02-13 18:58:17 +0000128 USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port,
Bin Meng5003a8f2017-07-19 21:49:59 +0800129 data, sizeof(struct usb_port_status), USB_CNTL_TIMEOUT);
Bin Meng2b51a1b2017-07-19 21:51:12 +0800130
131#ifdef CONFIG_DM_USB
132 if (ret < 0)
133 return ret;
134
135 /*
136 * Translate the USB 3.0 hub port status field into the old version
137 * that U-Boot understands. Do this only when the hub is not root hub.
138 * For root hub, the port status field has already been translated
139 * in the host controller driver (see xhci_submit_root() in xhci.c).
140 *
141 * Note: this only supports driver model.
142 */
143
144 if (!usb_hub_is_root_hub(dev->dev) && usb_hub_is_superspeed(dev)) {
145 struct usb_port_status *status = (struct usb_port_status *)data;
146 u16 tmp = (status->wPortStatus) & USB_SS_PORT_STAT_MASK;
147
148 if (status->wPortStatus & USB_SS_PORT_STAT_POWER)
149 tmp |= USB_PORT_STAT_POWER;
150 if ((status->wPortStatus & USB_SS_PORT_STAT_SPEED) ==
151 USB_SS_PORT_STAT_SPEED_5GBPS)
152 tmp |= USB_PORT_STAT_SUPER_SPEED;
153
154 status->wPortStatus = tmp;
155 }
156#endif
157
158 return ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000159}
160
161
162static void usb_hub_power_on(struct usb_hub_device *hub)
163{
164 int i;
165 struct usb_device *dev;
Wolfgang Grandegger9bb46e02011-12-21 00:01:09 +0000166 unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2;
Tim Harveyacda1d52015-04-08 12:21:12 -0700167 const char *env;
Marek Vasut6da5af32012-02-13 18:58:17 +0000168
169 dev = hub->pusb_dev;
Vivek Gautamc9b13d62013-04-24 02:50:11 +0000170
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530171 debug("enabling power on all ports\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000172 for (i = 0; i < dev->maxchild; i++) {
173 usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530174 debug("port %d returns %lX\n", i + 1, dev->status);
Marek Vasut6da5af32012-02-13 18:58:17 +0000175 }
Wolfgang Grandegger9bb46e02011-12-21 00:01:09 +0000176
Stefan Roeseed4823a2016-03-15 13:59:15 +0100177#ifdef CONFIG_SANDBOX
178 /*
179 * Don't set timeout / delay values here. This results
180 * in these values still being reset to 0.
181 */
182 if (state_get_skip_delays())
183 return;
184#endif
185
Stephen Warren62da17c2014-05-19 14:21:17 -0600186 /*
187 * Wait for power to become stable,
188 * plus spec-defined max time for device to connect
Tim Harveyacda1d52015-04-08 12:21:12 -0700189 * but allow this time to be increased via env variable as some
190 * devices break the spec and require longer warm-up times
Stephen Warren62da17c2014-05-19 14:21:17 -0600191 */
Simon Glass64b723f2017-08-03 12:22:12 -0600192 env = env_get("usb_pgood_delay");
Tim Harveyacda1d52015-04-08 12:21:12 -0700193 if (env)
194 pgood_delay = max(pgood_delay,
195 (unsigned)simple_strtol(env, NULL, 0));
196 debug("pgood_delay=%dms\n", pgood_delay);
Stefan Roeseed4823a2016-03-15 13:59:15 +0100197
198 /*
199 * Do a minimum delay of the larger value of 100ms or pgood_delay
200 * so that the power can stablize before the devices are queried
201 */
202 hub->query_delay = get_timer(0) + max(100, (int)pgood_delay);
203
204 /*
205 * Record the power-on timeout here. The max. delay (timeout)
206 * will be done based on this value in the USB port loop in
207 * usb_hub_configure() later.
208 */
209 hub->connect_timeout = hub->query_delay + 1000;
210 debug("devnum=%d poweron: query_delay=%d connect_timeout=%d\n",
211 dev->devnum, max(100, (int)pgood_delay),
212 max(100, (int)pgood_delay) + 1000);
Marek Vasut6da5af32012-02-13 18:58:17 +0000213}
214
Bin Meng05d08d02017-07-19 21:51:09 +0800215#ifndef CONFIG_DM_USB
216static struct usb_hub_device hub_dev[USB_MAX_HUB];
217static int usb_hub_index;
218
Marek Vasut6da5af32012-02-13 18:58:17 +0000219void usb_hub_reset(void)
220{
221 usb_hub_index = 0;
Stefan Roeseed4823a2016-03-15 13:59:15 +0100222
223 /* Zero out global hub_dev in case its re-used again */
224 memset(hub_dev, 0, sizeof(hub_dev));
Marek Vasut6da5af32012-02-13 18:58:17 +0000225}
226
227static struct usb_hub_device *usb_hub_allocate(void)
228{
229 if (usb_hub_index < USB_MAX_HUB)
230 return &hub_dev[usb_hub_index++];
231
232 printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB);
233 return NULL;
234}
Bin Meng05d08d02017-07-19 21:51:09 +0800235#endif
Marek Vasut6da5af32012-02-13 18:58:17 +0000236
237#define MAX_TRIES 5
238
239static inline char *portspeed(int portstatus)
240{
Vivek Gautam86c35be2013-04-24 02:50:12 +0000241 char *speed_str;
242
243 switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
244 case USB_PORT_STAT_SUPER_SPEED:
245 speed_str = "5 Gb/s";
246 break;
247 case USB_PORT_STAT_HIGH_SPEED:
248 speed_str = "480 Mb/s";
249 break;
250 case USB_PORT_STAT_LOW_SPEED:
251 speed_str = "1.5 Mb/s";
252 break;
253 default:
254 speed_str = "12 Mb/s";
255 break;
256 }
257
258 return speed_str;
Marek Vasut6da5af32012-02-13 18:58:17 +0000259}
260
Bin Meng2eee7942017-07-19 21:51:10 +0800261/**
262 * usb_hub_port_reset() - reset a port given its usb_device pointer
263 *
264 * Reset a hub port and see if a device is present on that port, providing
265 * sufficient time for it to show itself. The port status is returned.
266 *
267 * @dev: USB device to reset
268 * @port: Port number to reset (note ports are numbered from 0 here)
269 * @portstat: Returns port status
270 */
271static int usb_hub_port_reset(struct usb_device *dev, int port,
272 unsigned short *portstat)
Marek Vasut6da5af32012-02-13 18:58:17 +0000273{
Hans de Goede26177522015-05-10 14:10:15 +0200274 int err, tries;
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530275 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
Marek Vasut6da5af32012-02-13 18:58:17 +0000276 unsigned short portstatus, portchange;
Stefan Roese3678cb52016-03-15 13:59:12 +0100277 int delay = HUB_SHORT_RESET_TIME; /* start with short reset delay */
Marek Vasut6da5af32012-02-13 18:58:17 +0000278
Simon Glass6ab43b62015-03-25 12:22:10 -0600279#ifdef CONFIG_DM_USB
280 debug("%s: resetting '%s' port %d...\n", __func__, dev->dev->name,
281 port + 1);
282#else
283 debug("%s: resetting port %d...\n", __func__, port + 1);
284#endif
Marek Vasut6da5af32012-02-13 18:58:17 +0000285 for (tries = 0; tries < MAX_TRIES; tries++) {
Hans de Goede26177522015-05-10 14:10:15 +0200286 err = usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET);
287 if (err < 0)
288 return err;
Marek Vasut6da5af32012-02-13 18:58:17 +0000289
Stefan Roese3678cb52016-03-15 13:59:12 +0100290 mdelay(delay);
Marek Vasut6da5af32012-02-13 18:58:17 +0000291
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530292 if (usb_get_port_status(dev, port + 1, portsts) < 0) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530293 debug("get_port_status failed status %lX\n",
294 dev->status);
Marek Vasut6da5af32012-02-13 18:58:17 +0000295 return -1;
296 }
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530297 portstatus = le16_to_cpu(portsts->wPortStatus);
298 portchange = le16_to_cpu(portsts->wPortChange);
Marek Vasut6da5af32012-02-13 18:58:17 +0000299
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530300 debug("portstatus %x, change %x, %s\n", portstatus, portchange,
301 portspeed(portstatus));
Marek Vasut6da5af32012-02-13 18:58:17 +0000302
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530303 debug("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \
304 " USB_PORT_STAT_ENABLE %d\n",
305 (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0,
306 (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0,
307 (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0);
Marek Vasut6da5af32012-02-13 18:58:17 +0000308
Stephen Warren3a8e4fa2014-08-07 17:07:59 -0600309 /*
310 * Perhaps we should check for the following here:
311 * - C_CONNECTION hasn't been set.
312 * - CONNECTION is still set.
313 *
314 * Doing so would ensure that the device is still connected
315 * to the bus, and hasn't been unplugged or replaced while the
316 * USB bus reset was going on.
317 *
318 * However, if we do that, then (at least) a San Disk Ultra
319 * USB 3.0 16GB device fails to reset on (at least) an NVIDIA
320 * Tegra Jetson TK1 board. For some reason, the device appears
321 * to briefly drop off the bus when this second bus reset is
322 * executed, yet if we retry this loop, it'll eventually come
323 * back after another reset or two.
324 */
Marek Vasut6da5af32012-02-13 18:58:17 +0000325
326 if (portstatus & USB_PORT_STAT_ENABLE)
327 break;
328
Stefan Roese3678cb52016-03-15 13:59:12 +0100329 /* Switch to long reset delay for the next round */
330 delay = HUB_LONG_RESET_TIME;
Marek Vasut6da5af32012-02-13 18:58:17 +0000331 }
332
333 if (tries == MAX_TRIES) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530334 debug("Cannot enable port %i after %i retries, " \
335 "disabling port.\n", port + 1, MAX_TRIES);
336 debug("Maybe the USB cable is bad?\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000337 return -1;
338 }
339
340 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET);
341 *portstat = portstatus;
342 return 0;
343}
344
Simon Glassd1461132015-03-25 12:22:01 -0600345int usb_hub_port_connect_change(struct usb_device *dev, int port)
Marek Vasut6da5af32012-02-13 18:58:17 +0000346{
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530347 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
Marek Vasut6da5af32012-02-13 18:58:17 +0000348 unsigned short portstatus;
Simon Glassd1461132015-03-25 12:22:01 -0600349 int ret, speed;
Marek Vasut6da5af32012-02-13 18:58:17 +0000350
351 /* Check status */
Simon Glassd1461132015-03-25 12:22:01 -0600352 ret = usb_get_port_status(dev, port + 1, portsts);
353 if (ret < 0) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530354 debug("get_port_status failed\n");
Simon Glassd1461132015-03-25 12:22:01 -0600355 return ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000356 }
357
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530358 portstatus = le16_to_cpu(portsts->wPortStatus);
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530359 debug("portstatus %x, change %x, %s\n",
360 portstatus,
361 le16_to_cpu(portsts->wPortChange),
362 portspeed(portstatus));
Marek Vasut6da5af32012-02-13 18:58:17 +0000363
364 /* Clear the connection change status */
365 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION);
366
367 /* Disconnect any existing devices under this port */
368 if (((!(portstatus & USB_PORT_STAT_CONNECTION)) &&
Simon Glass6ab43b62015-03-25 12:22:10 -0600369 (!(portstatus & USB_PORT_STAT_ENABLE))) ||
370 usb_device_has_child_on_port(dev, port)) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530371 debug("usb_disconnect(&hub->children[port]);\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000372 /* Return now if nothing is connected */
373 if (!(portstatus & USB_PORT_STAT_CONNECTION))
Simon Glassd1461132015-03-25 12:22:01 -0600374 return -ENOTCONN;
Marek Vasut6da5af32012-02-13 18:58:17 +0000375 }
Marek Vasut6da5af32012-02-13 18:58:17 +0000376
377 /* Reset the port */
Bin Meng2eee7942017-07-19 21:51:10 +0800378 ret = usb_hub_port_reset(dev, port, &portstatus);
Simon Glassd1461132015-03-25 12:22:01 -0600379 if (ret < 0) {
Hans de Goede63f34ca2015-05-10 14:10:16 +0200380 if (ret != -ENXIO)
381 printf("cannot reset port %i!?\n", port + 1);
Simon Glassd1461132015-03-25 12:22:01 -0600382 return ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000383 }
384
Vivek Gautam86c35be2013-04-24 02:50:12 +0000385 switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
386 case USB_PORT_STAT_SUPER_SPEED:
Simon Glassd1461132015-03-25 12:22:01 -0600387 speed = USB_SPEED_SUPER;
Vivek Gautam86c35be2013-04-24 02:50:12 +0000388 break;
389 case USB_PORT_STAT_HIGH_SPEED:
Simon Glassd1461132015-03-25 12:22:01 -0600390 speed = USB_SPEED_HIGH;
Vivek Gautam86c35be2013-04-24 02:50:12 +0000391 break;
392 case USB_PORT_STAT_LOW_SPEED:
Simon Glassd1461132015-03-25 12:22:01 -0600393 speed = USB_SPEED_LOW;
Vivek Gautam86c35be2013-04-24 02:50:12 +0000394 break;
395 default:
Simon Glassd1461132015-03-25 12:22:01 -0600396 speed = USB_SPEED_FULL;
Vivek Gautam86c35be2013-04-24 02:50:12 +0000397 break;
398 }
Marek Vasut6da5af32012-02-13 18:58:17 +0000399
Simon Glass6ab43b62015-03-25 12:22:10 -0600400#ifdef CONFIG_DM_USB
401 struct udevice *child;
402
403 ret = usb_scan_device(dev->dev, port + 1, speed, &child);
404#else
405 struct usb_device *usb;
406
Simon Glassd1461132015-03-25 12:22:01 -0600407 ret = usb_alloc_new_device(dev->controller, &usb);
408 if (ret) {
409 printf("cannot create new device: ret=%d", ret);
410 return ret;
411 }
412
Marek Vasut6da5af32012-02-13 18:58:17 +0000413 dev->children[port] = usb;
Simon Glassd1461132015-03-25 12:22:01 -0600414 usb->speed = speed;
Marek Vasut6da5af32012-02-13 18:58:17 +0000415 usb->parent = dev;
416 usb->portnr = port + 1;
417 /* Run it through the hoops (find a driver, etc) */
Simon Glassd1461132015-03-25 12:22:01 -0600418 ret = usb_new_device(usb);
419 if (ret < 0) {
Marek Vasut6da5af32012-02-13 18:58:17 +0000420 /* Woops, disable the port */
Simon Glassd1461132015-03-25 12:22:01 -0600421 usb_free_device(dev->controller);
Milind Choudharyebb24782012-12-12 17:55:28 -0800422 dev->children[port] = NULL;
Simon Glass6ab43b62015-03-25 12:22:10 -0600423 }
424#endif
425 if (ret < 0) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530426 debug("hub: disabling port %d\n", port + 1);
Marek Vasut6da5af32012-02-13 18:58:17 +0000427 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE);
428 }
Simon Glassd1461132015-03-25 12:22:01 -0600429
430 return ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000431}
432
Stefan Roeseed4823a2016-03-15 13:59:15 +0100433static int usb_scan_port(struct usb_device_scan *usb_scan)
434{
435 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
436 unsigned short portstatus;
437 unsigned short portchange;
438 struct usb_device *dev;
439 struct usb_hub_device *hub;
440 int ret = 0;
441 int i;
442
443 dev = usb_scan->dev;
444 hub = usb_scan->hub;
445 i = usb_scan->port;
446
447 /*
448 * Don't talk to the device before the query delay is expired.
449 * This is needed for voltages to stabalize.
450 */
451 if (get_timer(0) < hub->query_delay)
452 return 0;
453
454 ret = usb_get_port_status(dev, i + 1, portsts);
455 if (ret < 0) {
456 debug("get_port_status failed\n");
457 if (get_timer(0) >= hub->connect_timeout) {
458 debug("devnum=%d port=%d: timeout\n",
459 dev->devnum, i + 1);
460 /* Remove this device from scanning list */
461 list_del(&usb_scan->list);
462 free(usb_scan);
463 return 0;
464 }
Marek Vasut614d9dd2016-05-03 22:22:59 +0200465 return 0;
Stefan Roeseed4823a2016-03-15 13:59:15 +0100466 }
467
468 portstatus = le16_to_cpu(portsts->wPortStatus);
469 portchange = le16_to_cpu(portsts->wPortChange);
470 debug("Port %d Status %X Change %X\n", i + 1, portstatus, portchange);
471
Bin Meng049ba142017-07-19 21:49:57 +0800472 /*
473 * No connection change happened, wait a bit more.
474 *
475 * For some situation, the hub reports no connection change but a
476 * device is connected to the port (eg: CCS bit is set but CSC is not
477 * in the PORTSC register of a root hub), ignore such case.
478 */
479 if (!(portchange & USB_PORT_STAT_C_CONNECTION) &&
480 !(portstatus & USB_PORT_STAT_CONNECTION)) {
Stefan Roeseed4823a2016-03-15 13:59:15 +0100481 if (get_timer(0) >= hub->connect_timeout) {
482 debug("devnum=%d port=%d: timeout\n",
483 dev->devnum, i + 1);
484 /* Remove this device from scanning list */
485 list_del(&usb_scan->list);
486 free(usb_scan);
487 return 0;
488 }
489 return 0;
490 }
491
Bin Mengdff5c162017-09-18 06:40:45 -0700492 if (portchange & USB_PORT_STAT_C_RESET) {
493 debug("port %d reset change\n", i + 1);
494 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
495 }
496
Bin Meng026465b2017-09-18 06:40:46 -0700497 if ((portchange & USB_SS_PORT_STAT_C_BH_RESET) &&
498 usb_hub_is_superspeed(dev)) {
499 debug("port %d BH reset change\n", i + 1);
500 usb_clear_port_feature(dev, i + 1, USB_SS_PORT_FEAT_C_BH_RESET);
501 }
502
Stefan Roeseed4823a2016-03-15 13:59:15 +0100503 /* A new USB device is ready at this point */
504 debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1);
505
506 usb_hub_port_connect_change(dev, i);
507
508 if (portchange & USB_PORT_STAT_C_ENABLE) {
509 debug("port %d enable change, status %x\n", i + 1, portstatus);
510 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE);
511 /*
512 * The following hack causes a ghost device problem
513 * to Faraday EHCI
514 */
515#ifndef CONFIG_USB_EHCI_FARADAY
516 /*
517 * EM interference sometimes causes bad shielded USB
518 * devices to be shutdown by the hub, this hack enables
519 * them again. Works at least with mouse driver
520 */
521 if (!(portstatus & USB_PORT_STAT_ENABLE) &&
522 (portstatus & USB_PORT_STAT_CONNECTION) &&
523 usb_device_has_child_on_port(dev, i)) {
524 debug("already running port %i disabled by hub (EMI?), re-enabling...\n",
525 i + 1);
526 usb_hub_port_connect_change(dev, i);
527 }
528#endif
529 }
530
531 if (portstatus & USB_PORT_STAT_SUSPEND) {
532 debug("port %d suspend change\n", i + 1);
533 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_SUSPEND);
534 }
535
536 if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
537 debug("port %d over-current change\n", i + 1);
538 usb_clear_port_feature(dev, i + 1,
539 USB_PORT_FEAT_C_OVER_CURRENT);
540 /* Only power-on this one port */
541 usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
542 hub->overcurrent_count[i]++;
543
544 /*
545 * If the max-scan-count is not reached, return without removing
546 * the device from scan-list. This will re-issue a new scan.
547 */
548 if (hub->overcurrent_count[i] <=
549 PORT_OVERCURRENT_MAX_SCAN_COUNT)
550 return 0;
551
552 /* Otherwise the device will get removed */
Vagrant Cascadianedfdb992016-04-30 19:18:00 -0700553 printf("Port %d over-current occurred %d times\n", i + 1,
Stefan Roeseed4823a2016-03-15 13:59:15 +0100554 hub->overcurrent_count[i]);
555 }
556
Stefan Roeseed4823a2016-03-15 13:59:15 +0100557 /*
558 * We're done with this device, so let's remove this device from
559 * scanning list
560 */
561 list_del(&usb_scan->list);
562 free(usb_scan);
563
564 return 0;
565}
566
567static int usb_device_list_scan(void)
568{
569 struct usb_device_scan *usb_scan;
570 struct usb_device_scan *tmp;
571 static int running;
572 int ret = 0;
573
574 /* Only run this loop once for each controller */
575 if (running)
576 return 0;
577
578 running = 1;
579
580 while (1) {
581 /* We're done, once the list is empty again */
582 if (list_empty(&usb_scan_list))
583 goto out;
584
585 list_for_each_entry_safe(usb_scan, tmp, &usb_scan_list, list) {
586 int ret;
587
588 /* Scan this port */
589 ret = usb_scan_port(usb_scan);
590 if (ret)
591 goto out;
592 }
593 }
594
595out:
596 /*
597 * This USB controller has finished scanning all its connected
598 * USB devices. Set "running" back to 0, so that other USB controllers
599 * will scan their devices too.
600 */
601 running = 0;
602
603 return ret;
604}
Marek Vasut6da5af32012-02-13 18:58:17 +0000605
Bin Meng05d08d02017-07-19 21:51:09 +0800606static struct usb_hub_device *usb_get_hub_device(struct usb_device *dev)
607{
608 struct usb_hub_device *hub;
609
610#ifndef CONFIG_DM_USB
611 /* "allocate" Hub device */
612 hub = usb_hub_allocate();
613#else
614 hub = dev_get_uclass_priv(dev->dev);
615#endif
616
617 return hub;
618}
619
Marek Vasut6da5af32012-02-13 18:58:17 +0000620static int usb_hub_configure(struct usb_device *dev)
621{
Julius Wernerfc4ec492013-07-19 13:12:08 -0700622 int i, length;
Puneet Saxena6c9bb602012-04-03 14:56:06 +0530623 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, USB_BUFSIZ);
624 unsigned char *bitmap;
Lucas Stach835e11e2012-09-06 08:00:13 +0200625 short hubCharacteristics;
Marek Vasut6da5af32012-02-13 18:58:17 +0000626 struct usb_hub_descriptor *descriptor;
627 struct usb_hub_device *hub;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530628 __maybe_unused struct usb_hub_status *hubsts;
Simon Glassf977c182015-03-25 12:22:09 -0600629 int ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000630
Bin Meng05d08d02017-07-19 21:51:09 +0800631 hub = usb_get_hub_device(dev);
Marek Vasut6da5af32012-02-13 18:58:17 +0000632 if (hub == NULL)
Simon Glassf977c182015-03-25 12:22:09 -0600633 return -ENOMEM;
Marek Vasut6da5af32012-02-13 18:58:17 +0000634 hub->pusb_dev = dev;
Bin Meng05d08d02017-07-19 21:51:09 +0800635
Marek Vasut6da5af32012-02-13 18:58:17 +0000636 /* Get the the hub descriptor */
Simon Glassf977c182015-03-25 12:22:09 -0600637 ret = usb_get_hub_descriptor(dev, buffer, 4);
638 if (ret < 0) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530639 debug("usb_hub_configure: failed to get hub " \
640 "descriptor, giving up %lX\n", dev->status);
Simon Glassf977c182015-03-25 12:22:09 -0600641 return ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000642 }
643 descriptor = (struct usb_hub_descriptor *)buffer;
644
Masahiro Yamadadb204642014-11-07 03:03:31 +0900645 length = min_t(int, descriptor->bLength,
646 sizeof(struct usb_hub_descriptor));
Marek Vasut6da5af32012-02-13 18:58:17 +0000647
Simon Glassf977c182015-03-25 12:22:09 -0600648 ret = usb_get_hub_descriptor(dev, buffer, length);
649 if (ret < 0) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530650 debug("usb_hub_configure: failed to get hub " \
651 "descriptor 2nd giving up %lX\n", dev->status);
Simon Glassf977c182015-03-25 12:22:09 -0600652 return ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000653 }
Julius Wernerfc4ec492013-07-19 13:12:08 -0700654 memcpy((unsigned char *)&hub->desc, buffer, length);
Marek Vasut6da5af32012-02-13 18:58:17 +0000655 /* adjust 16bit values */
Lucas Stach835e11e2012-09-06 08:00:13 +0200656 put_unaligned(le16_to_cpu(get_unaligned(
657 &descriptor->wHubCharacteristics)),
658 &hub->desc.wHubCharacteristics);
Marek Vasut6da5af32012-02-13 18:58:17 +0000659 /* set the bitmap */
Bin Meng0d66b3a2017-07-19 21:50:00 +0800660 bitmap = (unsigned char *)&hub->desc.u.hs.DeviceRemovable[0];
Marek Vasut6da5af32012-02-13 18:58:17 +0000661 /* devices not removable by default */
662 memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8);
Bin Meng0d66b3a2017-07-19 21:50:00 +0800663 bitmap = (unsigned char *)&hub->desc.u.hs.PortPowerCtrlMask[0];
Marek Vasut6da5af32012-02-13 18:58:17 +0000664 memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */
665
666 for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++)
Bin Meng0d66b3a2017-07-19 21:50:00 +0800667 hub->desc.u.hs.DeviceRemovable[i] =
668 descriptor->u.hs.DeviceRemovable[i];
Marek Vasut6da5af32012-02-13 18:58:17 +0000669
670 for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++)
Bin Meng0d66b3a2017-07-19 21:50:00 +0800671 hub->desc.u.hs.PortPowerCtrlMask[i] =
672 descriptor->u.hs.PortPowerCtrlMask[i];
Marek Vasut6da5af32012-02-13 18:58:17 +0000673
674 dev->maxchild = descriptor->bNbrPorts;
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530675 debug("%d ports detected\n", dev->maxchild);
Marek Vasut6da5af32012-02-13 18:58:17 +0000676
Lucas Stach835e11e2012-09-06 08:00:13 +0200677 hubCharacteristics = get_unaligned(&hub->desc.wHubCharacteristics);
678 switch (hubCharacteristics & HUB_CHAR_LPSM) {
Marek Vasut6da5af32012-02-13 18:58:17 +0000679 case 0x00:
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530680 debug("ganged power switching\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000681 break;
682 case 0x01:
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530683 debug("individual port power switching\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000684 break;
685 case 0x02:
686 case 0x03:
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530687 debug("unknown reserved power switching mode\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000688 break;
689 }
690
Lucas Stach835e11e2012-09-06 08:00:13 +0200691 if (hubCharacteristics & HUB_CHAR_COMPOUND)
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530692 debug("part of a compound device\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000693 else
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530694 debug("standalone hub\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000695
Lucas Stach835e11e2012-09-06 08:00:13 +0200696 switch (hubCharacteristics & HUB_CHAR_OCPM) {
Marek Vasut6da5af32012-02-13 18:58:17 +0000697 case 0x00:
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530698 debug("global over-current protection\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000699 break;
700 case 0x08:
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530701 debug("individual port over-current protection\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000702 break;
703 case 0x10:
704 case 0x18:
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530705 debug("no over-current protection\n");
Marek Vasut6da5af32012-02-13 18:58:17 +0000706 break;
707 }
708
Bin Meng66dcbd22017-07-19 21:51:16 +0800709 switch (dev->descriptor.bDeviceProtocol) {
710 case USB_HUB_PR_FS:
711 break;
712 case USB_HUB_PR_HS_SINGLE_TT:
713 debug("Single TT\n");
714 break;
715 case USB_HUB_PR_HS_MULTI_TT:
716 ret = usb_set_interface(dev, 0, 1);
717 if (ret == 0) {
718 debug("TT per port\n");
719 hub->tt.multi = true;
720 } else {
721 debug("Using single TT (err %d)\n", ret);
722 }
723 break;
724 case USB_HUB_PR_SS:
725 /* USB 3.0 hubs don't have a TT */
726 break;
727 default:
728 debug("Unrecognized hub protocol %d\n",
729 dev->descriptor.bDeviceProtocol);
730 break;
731 }
732
733 /* Note 8 FS bit times == (8 bits / 12000000 bps) ~= 666ns */
734 switch (hubCharacteristics & HUB_CHAR_TTTT) {
735 case HUB_TTTT_8_BITS:
736 if (dev->descriptor.bDeviceProtocol != 0) {
737 hub->tt.think_time = 666;
738 debug("TT requires at most %d FS bit times (%d ns)\n",
739 8, hub->tt.think_time);
740 }
741 break;
742 case HUB_TTTT_16_BITS:
743 hub->tt.think_time = 666 * 2;
744 debug("TT requires at most %d FS bit times (%d ns)\n",
745 16, hub->tt.think_time);
746 break;
747 case HUB_TTTT_24_BITS:
748 hub->tt.think_time = 666 * 3;
749 debug("TT requires at most %d FS bit times (%d ns)\n",
750 24, hub->tt.think_time);
751 break;
752 case HUB_TTTT_32_BITS:
753 hub->tt.think_time = 666 * 4;
754 debug("TT requires at most %d FS bit times (%d ns)\n",
755 32, hub->tt.think_time);
756 break;
757 }
758
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530759 debug("power on to power good time: %dms\n",
760 descriptor->bPwrOn2PwrGood * 2);
761 debug("hub controller current requirement: %dmA\n",
762 descriptor->bHubContrCurrent);
Marek Vasut6da5af32012-02-13 18:58:17 +0000763
764 for (i = 0; i < dev->maxchild; i++)
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530765 debug("port %d is%s removable\n", i + 1,
Bin Meng0d66b3a2017-07-19 21:50:00 +0800766 hub->desc.u.hs.DeviceRemovable[(i + 1) / 8] & \
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530767 (1 << ((i + 1) % 8)) ? " not" : "");
Marek Vasut6da5af32012-02-13 18:58:17 +0000768
769 if (sizeof(struct usb_hub_status) > USB_BUFSIZ) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530770 debug("usb_hub_configure: failed to get Status - " \
771 "too long: %d\n", descriptor->bLength);
Simon Glassf977c182015-03-25 12:22:09 -0600772 return -EFBIG;
Marek Vasut6da5af32012-02-13 18:58:17 +0000773 }
774
Simon Glassf977c182015-03-25 12:22:09 -0600775 ret = usb_get_hub_status(dev, buffer);
776 if (ret < 0) {
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530777 debug("usb_hub_configure: failed to get Status %lX\n",
778 dev->status);
Simon Glassf977c182015-03-25 12:22:09 -0600779 return ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000780 }
781
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530782#ifdef DEBUG
Marek Vasut6da5af32012-02-13 18:58:17 +0000783 hubsts = (struct usb_hub_status *)buffer;
784#endif
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530785
786 debug("get_hub_status returned status %X, change %X\n",
787 le16_to_cpu(hubsts->wHubStatus),
788 le16_to_cpu(hubsts->wHubChange));
789 debug("local power source is %s\n",
790 (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \
791 "lost (inactive)" : "good");
792 debug("%sover-current condition exists\n",
793 (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \
794 "" : "no ");
Bin Mengdab74372017-07-19 21:51:13 +0800795
796#ifdef CONFIG_DM_USB
797 /*
Bin Menga4b2bfb2017-07-19 21:51:18 +0800798 * Update USB host controller's internal representation of this hub
799 * after the hub descriptor is fetched.
800 */
801 ret = usb_update_hub_device(dev);
802 if (ret < 0 && ret != -ENOSYS) {
803 debug("%s: failed to update hub device for HCD (%x)\n",
804 __func__, ret);
805 return ret;
806 }
807
808 /*
Bin Mengdab74372017-07-19 21:51:13 +0800809 * A maximum of seven tiers are allowed in a USB topology, and the
810 * root hub occupies the first tier. The last tier ends with a normal
811 * USB device. USB 3.0 hubs use a 20-bit field called 'route string'
812 * to route packets to the designated downstream port. The hub uses a
813 * hub depth value multiplied by four as an offset into the 'route
814 * string' to locate the bits it uses to determine the downstream
815 * port number.
816 */
817 if (usb_hub_is_root_hub(dev->dev)) {
818 hub->hub_depth = -1;
819 } else {
820 struct udevice *hdev;
821 int depth = 0;
822
823 hdev = dev->dev->parent;
824 while (!usb_hub_is_root_hub(hdev)) {
825 depth++;
826 hdev = hdev->parent;
827 }
828
829 hub->hub_depth = depth;
830
831 if (usb_hub_is_superspeed(dev)) {
832 debug("set hub (%p) depth to %d\n", dev, depth);
833 /*
834 * This request sets the value that the hub uses to
835 * determine the index into the 'route string index'
836 * for this hub.
837 */
838 ret = usb_set_hub_depth(dev, depth);
839 if (ret < 0) {
840 debug("%s: failed to set hub depth (%lX)\n",
841 __func__, dev->status);
842 return ret;
843 }
844 }
845 }
846#endif
847
Marek Vasut6da5af32012-02-13 18:58:17 +0000848 usb_hub_power_on(hub);
849
Dan Murphy2666bb12013-08-01 14:06:01 -0500850 /*
851 * Reset any devices that may be in a bad state when applying
852 * the power. This is a __weak function. Resetting of the devices
853 * should occur in the board file of the device.
854 */
855 for (i = 0; i < dev->maxchild; i++)
Philipp Tomsich693f4922017-11-22 17:15:17 +0100856 usb_hub_reset_devices(hub, i + 1);
Dan Murphy2666bb12013-08-01 14:06:01 -0500857
Stefan Roeseed4823a2016-03-15 13:59:15 +0100858 /*
859 * Only add the connected USB devices, including potential hubs,
860 * to a scanning list. This list will get scanned and devices that
861 * are detected (either via port connected or via port timeout)
862 * will get removed from this list. Scanning of the devices on this
863 * list will continue until all devices are removed.
864 */
Marek Vasut6da5af32012-02-13 18:58:17 +0000865 for (i = 0; i < dev->maxchild; i++) {
Stefan Roeseed4823a2016-03-15 13:59:15 +0100866 struct usb_device_scan *usb_scan;
Marek Vasut6da5af32012-02-13 18:58:17 +0000867
Stefan Roeseed4823a2016-03-15 13:59:15 +0100868 usb_scan = calloc(1, sizeof(*usb_scan));
869 if (!usb_scan) {
870 printf("Can't allocate memory for USB device!\n");
871 return -ENOMEM;
Marek Vasut6da5af32012-02-13 18:58:17 +0000872 }
Stefan Roeseed4823a2016-03-15 13:59:15 +0100873 usb_scan->dev = dev;
874 usb_scan->hub = hub;
875 usb_scan->port = i;
876 list_add_tail(&usb_scan->list, &usb_scan_list);
877 }
Marek Vasut6da5af32012-02-13 18:58:17 +0000878
Stefan Roeseed4823a2016-03-15 13:59:15 +0100879 /*
880 * And now call the scanning code which loops over the generated list
881 */
882 ret = usb_device_list_scan();
Marek Vasut6da5af32012-02-13 18:58:17 +0000883
Stefan Roeseed4823a2016-03-15 13:59:15 +0100884 return ret;
Marek Vasut6da5af32012-02-13 18:58:17 +0000885}
886
Simon Glassf977c182015-03-25 12:22:09 -0600887static int usb_hub_check(struct usb_device *dev, int ifnum)
Marek Vasut6da5af32012-02-13 18:58:17 +0000888{
889 struct usb_interface *iface;
Simon Glassf977c182015-03-25 12:22:09 -0600890 struct usb_endpoint_descriptor *ep = NULL;
Marek Vasut6da5af32012-02-13 18:58:17 +0000891
892 iface = &dev->config.if_desc[ifnum];
893 /* Is it a hub? */
894 if (iface->desc.bInterfaceClass != USB_CLASS_HUB)
Simon Glassf977c182015-03-25 12:22:09 -0600895 goto err;
Marek Vasut6da5af32012-02-13 18:58:17 +0000896 /* Some hubs have a subclass of 1, which AFAICT according to the */
897 /* specs is not defined, but it works */
898 if ((iface->desc.bInterfaceSubClass != 0) &&
899 (iface->desc.bInterfaceSubClass != 1))
Simon Glassf977c182015-03-25 12:22:09 -0600900 goto err;
Marek Vasut6da5af32012-02-13 18:58:17 +0000901 /* Multiple endpoints? What kind of mutant ninja-hub is this? */
902 if (iface->desc.bNumEndpoints != 1)
Simon Glassf977c182015-03-25 12:22:09 -0600903 goto err;
Marek Vasut6da5af32012-02-13 18:58:17 +0000904 ep = &iface->ep_desc[0];
905 /* Output endpoint? Curiousier and curiousier.. */
906 if (!(ep->bEndpointAddress & USB_DIR_IN))
Simon Glassf977c182015-03-25 12:22:09 -0600907 goto err;
Marek Vasut6da5af32012-02-13 18:58:17 +0000908 /* If it's not an interrupt endpoint, we'd better punt! */
909 if ((ep->bmAttributes & 3) != 3)
Simon Glassf977c182015-03-25 12:22:09 -0600910 goto err;
Marek Vasut6da5af32012-02-13 18:58:17 +0000911 /* We found a hub */
Vivek Gautamf94c95d2013-04-12 16:34:33 +0530912 debug("USB hub found\n");
Simon Glassf977c182015-03-25 12:22:09 -0600913 return 0;
914
915err:
916 debug("USB hub not found: bInterfaceClass=%d, bInterfaceSubClass=%d, bNumEndpoints=%d\n",
917 iface->desc.bInterfaceClass, iface->desc.bInterfaceSubClass,
918 iface->desc.bNumEndpoints);
919 if (ep) {
920 debug(" bEndpointAddress=%#x, bmAttributes=%d",
921 ep->bEndpointAddress, ep->bmAttributes);
922 }
923
924 return -ENOENT;
925}
926
927int usb_hub_probe(struct usb_device *dev, int ifnum)
928{
929 int ret;
930
931 ret = usb_hub_check(dev, ifnum);
932 if (ret)
933 return 0;
Marek Vasut6da5af32012-02-13 18:58:17 +0000934 ret = usb_hub_configure(dev);
935 return ret;
936}
Simon Glass6ab43b62015-03-25 12:22:10 -0600937
938#ifdef CONFIG_DM_USB
939int usb_hub_scan(struct udevice *hub)
940{
Simon Glassde44acf2015-09-28 23:32:01 -0600941 struct usb_device *udev = dev_get_parent_priv(hub);
Simon Glass6ab43b62015-03-25 12:22:10 -0600942
943 return usb_hub_configure(udev);
944}
945
Simon Glass6ab43b62015-03-25 12:22:10 -0600946static int usb_hub_post_probe(struct udevice *dev)
947{
948 debug("%s\n", __func__);
949 return usb_hub_scan(dev);
950}
951
952static const struct udevice_id usb_hub_ids[] = {
953 { .compatible = "usb-hub" },
954 { }
955};
956
957U_BOOT_DRIVER(usb_generic_hub) = {
958 .name = "usb_hub",
959 .id = UCLASS_USB_HUB,
960 .of_match = usb_hub_ids,
961 .flags = DM_FLAG_ALLOC_PRIV_DMA,
962};
963
964UCLASS_DRIVER(usb_hub) = {
965 .id = UCLASS_USB_HUB,
966 .name = "usb_hub",
Simon Glass18230342016-07-05 17:10:10 -0600967 .post_bind = dm_scan_fdt_dev,
Simon Glass6ab43b62015-03-25 12:22:10 -0600968 .post_probe = usb_hub_post_probe,
969 .child_pre_probe = usb_child_pre_probe,
970 .per_child_auto_alloc_size = sizeof(struct usb_device),
971 .per_child_platdata_auto_alloc_size = sizeof(struct usb_dev_platdata),
Bin Meng05d08d02017-07-19 21:51:09 +0800972 .per_device_auto_alloc_size = sizeof(struct usb_hub_device),
Simon Glass6ab43b62015-03-25 12:22:10 -0600973};
974
975static const struct usb_device_id hub_id_table[] = {
976 {
977 .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS,
978 .bDeviceClass = USB_CLASS_HUB
979 },
980 { } /* Terminating entry */
981};
982
Simon Glass46952fb2015-07-06 16:47:51 -0600983U_BOOT_USB_DEVICE(usb_generic_hub, hub_id_table);
Simon Glass6ab43b62015-03-25 12:22:10 -0600984
985#endif