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affae2bf | 1 | /* |
affae2bf WD |
2 | * |
3 | * Most of this source has been derived from the Linux USB | |
460c322f WD |
4 | * project: |
5 | * (C) Copyright Linus Torvalds 1999 | |
6 | * (C) Copyright Johannes Erdfelt 1999-2001 | |
7 | * (C) Copyright Andreas Gal 1999 | |
8 | * (C) Copyright Gregory P. Smith 1999 | |
9 | * (C) Copyright Deti Fliegl 1999 (new USB architecture) | |
10 | * (C) Copyright Randy Dunlap 2000 | |
11 | * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id) | |
12 | * (C) Copyright Yggdrasil Computing, Inc. 2000 | |
13 | * (usb_device_id matching changes by Adam J. Richter) | |
14 | * | |
15 | * Adapted for U-Boot: | |
16 | * (C) Copyright 2001 Denis Peter, MPL AG Switzerland | |
affae2bf WD |
17 | * |
18 | * See file CREDITS for list of people who contributed to this | |
19 | * project. | |
20 | * | |
21 | * This program is free software; you can redistribute it and/or | |
22 | * modify it under the terms of the GNU General Public License as | |
23 | * published by the Free Software Foundation; either version 2 of | |
24 | * the License, or (at your option) any later version. | |
25 | * | |
26 | * This program is distributed in the hope that it will be useful, | |
27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
29 | * GNU General Public License for more details. | |
30 | * | |
31 | * You should have received a copy of the GNU General Public License | |
32 | * along with this program; if not, write to the Free Software | |
33 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
34 | * MA 02111-1307 USA | |
35 | * | |
36 | */ | |
37 | ||
affae2bf WD |
38 | /* |
39 | * How it works: | |
40 | * | |
41 | * Since this is a bootloader, the devices will not be automatic | |
42 | * (re)configured on hotplug, but after a restart of the USB the | |
43 | * device should work. | |
44 | * | |
45 | * For each transfer (except "Interrupt") we wait for completion. | |
46 | */ | |
47 | #include <common.h> | |
48 | #include <command.h> | |
49 | #include <asm/processor.h> | |
9c998aa8 | 50 | #include <linux/ctype.h> |
c918261c | 51 | #include <asm/byteorder.h> |
affae2bf | 52 | |
affae2bf WD |
53 | #include <usb.h> |
54 | #ifdef CONFIG_4xx | |
3048bcbf | 55 | #include <asm/4xx_pci.h> |
affae2bf WD |
56 | #endif |
57 | ||
095b8a37 | 58 | #undef USB_DEBUG |
affae2bf WD |
59 | |
60 | #ifdef USB_DEBUG | |
61 | #define USB_PRINTF(fmt,args...) printf (fmt ,##args) | |
62 | #else | |
63 | #define USB_PRINTF(fmt,args...) | |
64 | #endif | |
65 | ||
cd0a9de6 WD |
66 | #define USB_BUFSIZ 512 |
67 | ||
affae2bf WD |
68 | static struct usb_device usb_dev[USB_MAX_DEVICE]; |
69 | static int dev_index; | |
70 | static int running; | |
71 | static int asynch_allowed; | |
72 | static struct devrequest setup_packet; | |
73 | ||
e51aae38 BS |
74 | char usb_started; /* flag for the started/stopped USB status */ |
75 | ||
affae2bf WD |
76 | /********************************************************************** |
77 | * some forward declerations... | |
78 | */ | |
79 | void usb_scan_devices(void); | |
80 | ||
81 | int usb_hub_probe(struct usb_device *dev, int ifnum); | |
82 | void usb_hub_reset(void); | |
83 | ||
9c998aa8 | 84 | |
affae2bf WD |
85 | /*********************************************************************** |
86 | * wait_ms | |
87 | */ | |
88 | ||
89 | void __inline__ wait_ms(unsigned long ms) | |
90 | { | |
91 | while(ms-->0) | |
92 | udelay(1000); | |
93 | } | |
94 | /*************************************************************************** | |
95 | * Init USB Device | |
96 | */ | |
97 | ||
98 | int usb_init(void) | |
99 | { | |
100 | int result; | |
101 | ||
102 | running=0; | |
103 | dev_index=0; | |
104 | asynch_allowed=1; | |
105 | usb_hub_reset(); | |
106 | /* init low_level USB */ | |
107 | printf("USB: "); | |
108 | result = usb_lowlevel_init(); | |
109 | /* if lowlevel init is OK, scan the bus for devices i.e. search HUBs and configure them */ | |
110 | if(result==0) { | |
111 | printf("scanning bus for devices... "); | |
112 | running=1; | |
113 | usb_scan_devices(); | |
e51aae38 | 114 | usb_started = 1; |
affae2bf WD |
115 | return 0; |
116 | } | |
117 | else { | |
118 | printf("Error, couldn't init Lowlevel part\n"); | |
e51aae38 | 119 | usb_started = 0; |
affae2bf WD |
120 | return -1; |
121 | } | |
122 | } | |
123 | ||
124 | /****************************************************************************** | |
125 | * Stop USB this stops the LowLevel Part and deregisters USB devices. | |
126 | */ | |
127 | int usb_stop(void) | |
128 | { | |
eba1f2fc RB |
129 | int res = 0; |
130 | ||
131 | if (usb_started) { | |
132 | asynch_allowed = 1; | |
133 | usb_started = 0; | |
134 | usb_hub_reset(); | |
135 | res = usb_lowlevel_stop(); | |
136 | } | |
137 | return res; | |
affae2bf WD |
138 | } |
139 | ||
140 | /* | |
141 | * disables the asynch behaviour of the control message. This is used for data | |
142 | * transfers that uses the exclusiv access to the control and bulk messages. | |
143 | */ | |
144 | void usb_disable_asynch(int disable) | |
145 | { | |
146 | asynch_allowed=!disable; | |
147 | } | |
148 | ||
149 | ||
150 | /*------------------------------------------------------------------- | |
151 | * Message wrappers. | |
152 | * | |
153 | */ | |
154 | ||
155 | /* | |
156 | * submits an Interrupt Message | |
157 | */ | |
158 | int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe, | |
159 | void *buffer,int transfer_len, int interval) | |
160 | { | |
161 | return submit_int_msg(dev,pipe,buffer,transfer_len,interval); | |
162 | } | |
163 | ||
164 | /* | |
165 | * submits a control message and waits for comletion (at least timeout * 1ms) | |
166 | * If timeout is 0, we don't wait for completion (used as example to set and | |
167 | * clear keyboards LEDs). For data transfers, (storage transfers) we don't | |
168 | * allow control messages with 0 timeout, by previousely resetting the flag | |
169 | * asynch_allowed (usb_disable_asynch(1)). | |
170 | * returns the transfered length if OK or -1 if error. The transfered length | |
171 | * and the current status are stored in the dev->act_len and dev->status. | |
172 | */ | |
173 | int usb_control_msg(struct usb_device *dev, unsigned int pipe, | |
174 | unsigned char request, unsigned char requesttype, | |
175 | unsigned short value, unsigned short index, | |
176 | void *data, unsigned short size, int timeout) | |
177 | { | |
178 | if((timeout==0)&&(!asynch_allowed)) /* request for a asynch control pipe is not allowed */ | |
179 | return -1; | |
9c998aa8 | 180 | |
affae2bf WD |
181 | /* set setup command */ |
182 | setup_packet.requesttype = requesttype; | |
183 | setup_packet.request = request; | |
c918261c CE |
184 | setup_packet.value = cpu_to_le16(value); |
185 | setup_packet.index = cpu_to_le16(index); | |
186 | setup_packet.length = cpu_to_le16(size); | |
187 | USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X, value 0x%X index 0x%X length 0x%X\n", | |
affae2bf WD |
188 | request,requesttype,value,index,size); |
189 | dev->status=USB_ST_NOT_PROC; /*not yet processed */ | |
190 | ||
191 | submit_control_msg(dev,pipe,data,size,&setup_packet); | |
192 | if(timeout==0) { | |
193 | return (int)size; | |
194 | } | |
195 | while(timeout--) { | |
196 | if(!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
197 | break; | |
198 | wait_ms(1); | |
199 | } | |
200 | if(dev->status==0) | |
201 | return dev->act_len; | |
202 | else { | |
203 | return -1; | |
204 | } | |
205 | } | |
206 | ||
207 | /*------------------------------------------------------------------- | |
208 | * submits bulk message, and waits for completion. returns 0 if Ok or | |
209 | * -1 if Error. | |
210 | * synchronous behavior | |
211 | */ | |
212 | int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, | |
213 | void *data, int len, int *actual_length, int timeout) | |
214 | { | |
215 | if (len < 0) | |
216 | return -1; | |
217 | dev->status=USB_ST_NOT_PROC; /*not yet processed */ | |
218 | submit_bulk_msg(dev,pipe,data,len); | |
219 | while(timeout--) { | |
220 | if(!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
221 | break; | |
222 | wait_ms(1); | |
223 | } | |
224 | *actual_length=dev->act_len; | |
225 | if(dev->status==0) | |
226 | return 0; | |
227 | else | |
228 | return -1; | |
229 | } | |
230 | ||
231 | ||
232 | /*------------------------------------------------------------------- | |
233 | * Max Packet stuff | |
234 | */ | |
235 | ||
236 | /* | |
237 | * returns the max packet size, depending on the pipe direction and | |
238 | * the configurations values | |
239 | */ | |
240 | int usb_maxpacket(struct usb_device *dev,unsigned long pipe) | |
241 | { | |
242 | if((pipe & USB_DIR_IN)==0) /* direction is out -> use emaxpacket out */ | |
243 | return(dev->epmaxpacketout[((pipe>>15) & 0xf)]); | |
244 | else | |
245 | return(dev->epmaxpacketin[((pipe>>15) & 0xf)]); | |
246 | } | |
247 | ||
248 | /* | |
249 | * set the max packed value of all endpoints in the given configuration | |
250 | */ | |
251 | int usb_set_maxpacket(struct usb_device *dev) | |
252 | { | |
253 | int i,ii,b; | |
254 | struct usb_endpoint_descriptor *ep; | |
255 | ||
256 | for(i=0; i<dev->config.bNumInterfaces;i++) { | |
257 | for(ii=0; ii<dev->config.if_desc[i].bNumEndpoints; ii++) { | |
d0ff51ba | 258 | ep = &dev->config.if_desc[i].ep_desc[ii]; |
affae2bf WD |
259 | b=ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; |
260 | ||
261 | if((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)==USB_ENDPOINT_XFER_CONTROL) { /* Control => bidirectional */ | |
262 | dev->epmaxpacketout[b] = ep->wMaxPacketSize; | |
263 | dev->epmaxpacketin [b] = ep->wMaxPacketSize; | |
264 | USB_PRINTF("##Control EP epmaxpacketout/in[%d] = %d\n",b,dev->epmaxpacketin[b]); | |
265 | } | |
266 | else { | |
267 | if ((ep->bEndpointAddress & 0x80)==0) { /* OUT Endpoint */ | |
268 | if(ep->wMaxPacketSize > dev->epmaxpacketout[b]) { | |
269 | dev->epmaxpacketout[b] = ep->wMaxPacketSize; | |
270 | USB_PRINTF("##EP epmaxpacketout[%d] = %d\n",b,dev->epmaxpacketout[b]); | |
271 | } | |
272 | } | |
273 | else { /* IN Endpoint */ | |
274 | if(ep->wMaxPacketSize > dev->epmaxpacketin[b]) { | |
275 | dev->epmaxpacketin[b] = ep->wMaxPacketSize; | |
276 | USB_PRINTF("##EP epmaxpacketin[%d] = %d\n",b,dev->epmaxpacketin[b]); | |
277 | } | |
278 | } /* if out */ | |
279 | } /* if control */ | |
280 | } /* for each endpoint */ | |
281 | } | |
282 | return 0; | |
283 | } | |
284 | ||
285 | /******************************************************************************* | |
286 | * Parse the config, located in buffer, and fills the dev->config structure. | |
287 | * Note that all little/big endian swapping are done automatically. | |
288 | */ | |
289 | int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int cfgno) | |
290 | { | |
291 | struct usb_descriptor_header *head; | |
7455af41 BS |
292 | int index, ifno, epno, curr_if_num; |
293 | int i; | |
294 | unsigned char *ch; | |
295 | ||
296 | ifno = -1; | |
297 | epno = -1; | |
298 | curr_if_num = -1; | |
299 | ||
300 | dev->configno = cfgno; | |
301 | head = (struct usb_descriptor_header *) &buffer[0]; | |
302 | if(head->bDescriptorType != USB_DT_CONFIG) { | |
303 | printf(" ERROR: NOT USB_CONFIG_DESC %x\n", head->bDescriptorType); | |
affae2bf WD |
304 | return -1; |
305 | } | |
7455af41 | 306 | memcpy(&dev->config, buffer, buffer[0]); |
c918261c | 307 | le16_to_cpus(&(dev->config.wTotalLength)); |
7455af41 | 308 | dev->config.no_of_if = 0; |
affae2bf | 309 | |
7455af41 | 310 | index = dev->config.bLength; |
affae2bf | 311 | /* Ok the first entry must be a configuration entry, now process the others */ |
7455af41 BS |
312 | head = (struct usb_descriptor_header *) &buffer[index]; |
313 | while(index + 1 < dev->config.wTotalLength) { | |
affae2bf WD |
314 | switch(head->bDescriptorType) { |
315 | case USB_DT_INTERFACE: | |
7455af41 BS |
316 | if(((struct usb_interface_descriptor *) &buffer[index])-> |
317 | bInterfaceNumber != curr_if_num) { | |
318 | /* this is a new interface, copy new desc */ | |
319 | ifno = dev->config.no_of_if; | |
320 | dev->config.no_of_if++; | |
321 | memcpy(&dev->config.if_desc[ifno], | |
322 | &buffer[index], buffer[index]); | |
323 | dev->config.if_desc[ifno].no_of_ep = 0; | |
324 | dev->config.if_desc[ifno].num_altsetting = 1; | |
325 | curr_if_num = dev->config.if_desc[ifno].bInterfaceNumber; | |
326 | } else { | |
327 | /* found alternate setting for the interface */ | |
328 | dev->config.if_desc[ifno].num_altsetting++; | |
329 | } | |
affae2bf WD |
330 | break; |
331 | case USB_DT_ENDPOINT: | |
7455af41 | 332 | epno = dev->config.if_desc[ifno].no_of_ep; |
affae2bf | 333 | dev->config.if_desc[ifno].no_of_ep++; /* found an endpoint */ |
7455af41 BS |
334 | memcpy(&dev->config.if_desc[ifno].ep_desc[epno], |
335 | &buffer[index], buffer[index]); | |
c918261c | 336 | le16_to_cpus(&(dev->config.if_desc[ifno].ep_desc[epno].wMaxPacketSize)); |
7455af41 | 337 | USB_PRINTF("if %d, ep %d\n", ifno, epno); |
affae2bf WD |
338 | break; |
339 | default: | |
7455af41 | 340 | if(head->bLength == 0) |
affae2bf | 341 | return 1; |
7455af41 | 342 | USB_PRINTF("unknown Description Type : %x\n", head->bDescriptorType); |
affae2bf | 343 | { |
7455af41 BS |
344 | ch = (unsigned char *)head; |
345 | for(i = 0; i < head->bLength; i++) | |
346 | USB_PRINTF("%02X ", *ch++); | |
affae2bf WD |
347 | USB_PRINTF("\n\n\n"); |
348 | } | |
349 | break; | |
350 | } | |
7455af41 BS |
351 | index += head->bLength; |
352 | head = (struct usb_descriptor_header *)&buffer[index]; | |
affae2bf WD |
353 | } |
354 | return 1; | |
355 | } | |
356 | ||
357 | /*********************************************************************** | |
358 | * Clears an endpoint | |
359 | * endp: endpoint number in bits 0-3; | |
360 | * direction flag in bit 7 (1 = IN, 0 = OUT) | |
361 | */ | |
362 | int usb_clear_halt(struct usb_device *dev, int pipe) | |
363 | { | |
364 | int result; | |
9c998aa8 | 365 | int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7); |
affae2bf WD |
366 | |
367 | result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
368 | USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, endp, NULL, 0, USB_CNTL_TIMEOUT * 3); | |
369 | ||
370 | /* don't clear if failed */ | |
371 | if (result < 0) | |
372 | return result; | |
9c998aa8 | 373 | |
095b8a37 | 374 | /* |
9c998aa8 WD |
375 | * NOTE: we do not get status and verify reset was successful |
376 | * as some devices are reported to lock up upon this check.. | |
377 | */ | |
378 | ||
affae2bf | 379 | usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)); |
9c998aa8 | 380 | |
affae2bf WD |
381 | /* toggle is reset on clear */ |
382 | usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0); | |
383 | return 0; | |
384 | } | |
385 | ||
386 | ||
387 | /********************************************************************** | |
388 | * get_descriptor type | |
389 | */ | |
390 | int usb_get_descriptor(struct usb_device *dev, unsigned char type, unsigned char index, void *buf, int size) | |
391 | { | |
392 | int res; | |
53677ef1 | 393 | res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
affae2bf WD |
394 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, |
395 | (type << 8) + index, 0, | |
396 | buf, size, USB_CNTL_TIMEOUT); | |
397 | return res; | |
398 | } | |
399 | ||
400 | /********************************************************************** | |
401 | * gets configuration cfgno and store it in the buffer | |
402 | */ | |
403 | int usb_get_configuration_no(struct usb_device *dev,unsigned char *buffer,int cfgno) | |
404 | { | |
53677ef1 | 405 | int result; |
affae2bf WD |
406 | unsigned int tmp; |
407 | struct usb_config_descriptor *config; | |
408 | ||
409 | ||
410 | config=(struct usb_config_descriptor *)&buffer[0]; | |
411 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 8); | |
412 | if (result < 8) { | |
413 | if (result < 0) | |
414 | printf("unable to get descriptor, error %lX\n",dev->status); | |
415 | else | |
416 | printf("config descriptor too short (expected %i, got %i)\n",8,result); | |
417 | return -1; | |
418 | } | |
c918261c | 419 | tmp = le16_to_cpu(config->wTotalLength); |
affae2bf | 420 | |
cd0a9de6 WD |
421 | if (tmp > USB_BUFSIZ) { |
422 | USB_PRINTF("usb_get_configuration_no: failed to get descriptor - too long: %d\n", | |
423 | tmp); | |
424 | return -1; | |
425 | } | |
426 | ||
affae2bf WD |
427 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp); |
428 | USB_PRINTF("get_conf_no %d Result %d, wLength %d\n",cfgno,result,tmp); | |
429 | return result; | |
430 | } | |
431 | ||
432 | /******************************************************************** | |
433 | * set address of a device to the value in dev->devnum. | |
434 | * This can only be done by addressing the device via the default address (0) | |
435 | */ | |
436 | int usb_set_address(struct usb_device *dev) | |
437 | { | |
438 | int res; | |
439 | ||
440 | USB_PRINTF("set address %d\n",dev->devnum); | |
441 | res=usb_control_msg(dev, usb_snddefctrl(dev), | |
442 | USB_REQ_SET_ADDRESS, 0, | |
443 | (dev->devnum),0, | |
444 | NULL,0, USB_CNTL_TIMEOUT); | |
445 | return res; | |
446 | } | |
447 | ||
448 | /******************************************************************** | |
449 | * set interface number to interface | |
450 | */ | |
451 | int usb_set_interface(struct usb_device *dev, int interface, int alternate) | |
452 | { | |
453 | struct usb_interface_descriptor *if_face = NULL; | |
454 | int ret, i; | |
455 | ||
9c998aa8 | 456 | for (i = 0; i < dev->config.bNumInterfaces; i++) { |
affae2bf WD |
457 | if (dev->config.if_desc[i].bInterfaceNumber == interface) { |
458 | if_face = &dev->config.if_desc[i]; | |
459 | break; | |
460 | } | |
461 | } | |
462 | if (!if_face) { | |
463 | printf("selecting invalid interface %d", interface); | |
464 | return -1; | |
465 | } | |
7455af41 BS |
466 | /* |
467 | * We should return now for devices with only one alternate setting. | |
468 | * According to 9.4.10 of the Universal Serial Bus Specification Revision 2.0 | |
469 | * such devices can return with a STALL. This results in some USB sticks | |
470 | * timeouting during initialization and then being unusable in U-Boot. | |
471 | */ | |
472 | if (if_face->num_altsetting == 1) | |
473 | return 0; | |
affae2bf WD |
474 | |
475 | if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
476 | USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE, alternate, | |
477 | interface, NULL, 0, USB_CNTL_TIMEOUT * 5)) < 0) | |
478 | return ret; | |
479 | ||
affae2bf WD |
480 | return 0; |
481 | } | |
482 | ||
483 | /******************************************************************** | |
484 | * set configuration number to configuration | |
485 | */ | |
486 | int usb_set_configuration(struct usb_device *dev, int configuration) | |
487 | { | |
488 | int res; | |
489 | USB_PRINTF("set configuration %d\n",configuration); | |
490 | /* set setup command */ | |
491 | res=usb_control_msg(dev, usb_sndctrlpipe(dev,0), | |
492 | USB_REQ_SET_CONFIGURATION, 0, | |
493 | configuration,0, | |
494 | NULL,0, USB_CNTL_TIMEOUT); | |
495 | if(res==0) { | |
496 | dev->toggle[0] = 0; | |
497 | dev->toggle[1] = 0; | |
498 | return 0; | |
499 | } | |
500 | else | |
501 | return -1; | |
502 | } | |
503 | ||
504 | /******************************************************************** | |
505 | * set protocol to protocol | |
506 | */ | |
507 | int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol) | |
508 | { | |
509 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
510 | USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
511 | protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT); | |
512 | } | |
513 | ||
514 | /******************************************************************** | |
515 | * set idle | |
516 | */ | |
517 | int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id) | |
518 | { | |
519 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
520 | USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
521 | (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT); | |
522 | } | |
523 | ||
524 | /******************************************************************** | |
525 | * get report | |
526 | */ | |
527 | int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, unsigned char id, void *buf, int size) | |
528 | { | |
529 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
530 | USB_REQ_GET_REPORT, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
531 | (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); | |
532 | } | |
533 | ||
534 | /******************************************************************** | |
535 | * get class descriptor | |
536 | */ | |
537 | int usb_get_class_descriptor(struct usb_device *dev, int ifnum, | |
538 | unsigned char type, unsigned char id, void *buf, int size) | |
539 | { | |
540 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
541 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
542 | (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); | |
543 | } | |
544 | ||
545 | /******************************************************************** | |
546 | * get string index in buffer | |
547 | */ | |
548 | int usb_get_string(struct usb_device *dev, unsigned short langid, unsigned char index, void *buf, int size) | |
549 | { | |
9c998aa8 WD |
550 | int i; |
551 | int result; | |
552 | ||
553 | for (i = 0; i < 3; ++i) { | |
554 | /* some devices are flaky */ | |
555 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
556 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, | |
095b8a37 | 557 | (USB_DT_STRING << 8) + index, langid, buf, size, |
9c998aa8 WD |
558 | USB_CNTL_TIMEOUT); |
559 | ||
560 | if (result > 0) | |
561 | break; | |
095b8a37 WD |
562 | } |
563 | ||
9c998aa8 WD |
564 | return result; |
565 | } | |
566 | ||
567 | ||
568 | static void usb_try_string_workarounds(unsigned char *buf, int *length) | |
569 | { | |
570 | int newlength, oldlength = *length; | |
571 | ||
572 | for (newlength = 2; newlength + 1 < oldlength; newlength += 2) | |
573 | if (!isprint(buf[newlength]) || buf[newlength + 1]) | |
574 | break; | |
575 | ||
576 | if (newlength > 2) { | |
577 | buf[0] = newlength; | |
578 | *length = newlength; | |
579 | } | |
affae2bf WD |
580 | } |
581 | ||
9c998aa8 WD |
582 | |
583 | static int usb_string_sub(struct usb_device *dev, unsigned int langid, | |
584 | unsigned int index, unsigned char *buf) | |
585 | { | |
586 | int rc; | |
587 | ||
588 | /* Try to read the string descriptor by asking for the maximum | |
589 | * possible number of bytes */ | |
590 | rc = usb_get_string(dev, langid, index, buf, 255); | |
591 | ||
592 | /* If that failed try to read the descriptor length, then | |
593 | * ask for just that many bytes */ | |
594 | if (rc < 2) { | |
595 | rc = usb_get_string(dev, langid, index, buf, 2); | |
596 | if (rc == 2) | |
597 | rc = usb_get_string(dev, langid, index, buf, buf[0]); | |
598 | } | |
599 | ||
600 | if (rc >= 2) { | |
601 | if (!buf[0] && !buf[1]) | |
602 | usb_try_string_workarounds(buf, &rc); | |
603 | ||
604 | /* There might be extra junk at the end of the descriptor */ | |
605 | if (buf[0] < rc) | |
606 | rc = buf[0]; | |
607 | ||
608 | rc = rc - (rc & 1); /* force a multiple of two */ | |
609 | } | |
610 | ||
611 | if (rc < 2) | |
095b8a37 | 612 | rc = -1; |
9c998aa8 WD |
613 | |
614 | return rc; | |
615 | } | |
616 | ||
617 | ||
affae2bf WD |
618 | /******************************************************************** |
619 | * usb_string: | |
620 | * Get string index and translate it to ascii. | |
621 | * returns string length (> 0) or error (< 0) | |
622 | */ | |
623 | int usb_string(struct usb_device *dev, int index, char *buf, size_t size) | |
624 | { | |
cd0a9de6 | 625 | unsigned char mybuf[USB_BUFSIZ]; |
affae2bf WD |
626 | unsigned char *tbuf; |
627 | int err; | |
628 | unsigned int u, idx; | |
629 | ||
630 | if (size <= 0 || !buf || !index) | |
631 | return -1; | |
632 | buf[0] = 0; | |
d0ff51ba | 633 | tbuf = &mybuf[0]; |
affae2bf WD |
634 | |
635 | /* get langid for strings if it's not yet known */ | |
636 | if (!dev->have_langid) { | |
9c998aa8 | 637 | err = usb_string_sub(dev, 0, 0, tbuf); |
affae2bf WD |
638 | if (err < 0) { |
639 | USB_PRINTF("error getting string descriptor 0 (error=%x)\n",dev->status); | |
640 | return -1; | |
641 | } else if (tbuf[0] < 4) { | |
642 | USB_PRINTF("string descriptor 0 too short\n"); | |
643 | return -1; | |
644 | } else { | |
645 | dev->have_langid = -1; | |
646 | dev->string_langid = tbuf[2] | (tbuf[3]<< 8); | |
647 | /* always use the first langid listed */ | |
648 | USB_PRINTF("USB device number %d default language ID 0x%x\n", | |
649 | dev->devnum, dev->string_langid); | |
650 | } | |
651 | } | |
cd0a9de6 | 652 | |
9c998aa8 | 653 | err = usb_string_sub(dev, dev->string_langid, index, tbuf); |
affae2bf WD |
654 | if (err < 0) |
655 | return err; | |
9c998aa8 | 656 | |
affae2bf WD |
657 | size--; /* leave room for trailing NULL char in output buffer */ |
658 | for (idx = 0, u = 2; u < err; u += 2) { | |
659 | if (idx >= size) | |
660 | break; | |
661 | if (tbuf[u+1]) /* high byte */ | |
662 | buf[idx++] = '?'; /* non-ASCII character */ | |
663 | else | |
664 | buf[idx++] = tbuf[u]; | |
665 | } | |
666 | buf[idx] = 0; | |
667 | err = idx; | |
668 | return err; | |
669 | } | |
670 | ||
671 | ||
672 | /******************************************************************** | |
673 | * USB device handling: | |
674 | * the USB device are static allocated [USB_MAX_DEVICE]. | |
675 | */ | |
676 | ||
677 | ||
678 | /* returns a pointer to the device with the index [index]. | |
679 | * if the device is not assigned (dev->devnum==-1) returns NULL | |
680 | */ | |
681 | struct usb_device * usb_get_dev_index(int index) | |
682 | { | |
683 | if(usb_dev[index].devnum==-1) | |
684 | return NULL; | |
685 | else | |
686 | return &usb_dev[index]; | |
687 | } | |
688 | ||
689 | ||
690 | /* returns a pointer of a new device structure or NULL, if | |
691 | * no device struct is available | |
692 | */ | |
693 | struct usb_device * usb_alloc_new_device(void) | |
694 | { | |
695 | int i; | |
696 | USB_PRINTF("New Device %d\n",dev_index); | |
697 | if(dev_index==USB_MAX_DEVICE) { | |
5f535fe1 | 698 | printf("ERROR, too many USB Devices, max=%d\n",USB_MAX_DEVICE); |
affae2bf WD |
699 | return NULL; |
700 | } | |
701 | usb_dev[dev_index].devnum=dev_index+1; /* default Address is 0, real addresses start with 1 */ | |
702 | usb_dev[dev_index].maxchild=0; | |
703 | for(i=0;i<USB_MAXCHILDREN;i++) | |
704 | usb_dev[dev_index].children[i]=NULL; | |
705 | usb_dev[dev_index].parent=NULL; | |
706 | dev_index++; | |
707 | return &usb_dev[dev_index-1]; | |
708 | } | |
709 | ||
710 | ||
711 | /* | |
712 | * By the time we get here, the device has gotten a new device ID | |
713 | * and is in the default state. We need to identify the thing and | |
714 | * get the ball rolling.. | |
715 | * | |
716 | * Returns 0 for success, != 0 for error. | |
717 | */ | |
718 | int usb_new_device(struct usb_device *dev) | |
719 | { | |
720 | int addr, err; | |
721 | int tmp; | |
cd0a9de6 | 722 | unsigned char tmpbuf[USB_BUFSIZ]; |
affae2bf WD |
723 | |
724 | dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */ | |
725 | dev->maxpacketsize = 0; /* Default to 8 byte max packet size */ | |
726 | dev->epmaxpacketin [0] = 8; | |
727 | dev->epmaxpacketout[0] = 8; | |
728 | ||
729 | /* We still haven't set the Address yet */ | |
730 | addr = dev->devnum; | |
731 | dev->devnum = 0; | |
9c998aa8 WD |
732 | |
733 | #undef NEW_INIT_SEQ | |
734 | #ifdef NEW_INIT_SEQ | |
735 | /* this is a Windows scheme of initialization sequence, with double | |
736 | * reset of the device. Some equipment is said to work only with such | |
737 | * init sequence; this patch is based on the work by Alan Stern: | |
738 | * http://sourceforge.net/mailarchive/forum.php?thread_id=5729457&forum_id=5398 | |
739 | */ | |
740 | int j; | |
741 | struct usb_device_descriptor *desc; | |
742 | int port = -1; | |
743 | struct usb_device *parent = dev->parent; | |
744 | unsigned short portstatus; | |
745 | ||
746 | /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is | |
747 | * only 18 bytes long, this will terminate with a short packet. But if | |
748 | * the maxpacket size is 8 or 16 the device may be waiting to transmit | |
749 | * some more. */ | |
750 | ||
751 | desc = (struct usb_device_descriptor *)tmpbuf; | |
752 | desc->bMaxPacketSize0 = 0; | |
753 | for (j = 0; j < 3; ++j) { | |
754 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64); | |
755 | if (err < 0) { | |
756 | USB_PRINTF("usb_new_device: 64 byte descr\n"); | |
757 | break; | |
758 | } | |
759 | } | |
760 | dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0; | |
095b8a37 | 761 | |
9c998aa8 WD |
762 | /* find the port number we're at */ |
763 | if (parent) { | |
095b8a37 | 764 | |
9c998aa8 WD |
765 | for (j = 0; j < parent->maxchild; j++) { |
766 | if (parent->children[j] == dev) { | |
767 | port = j; | |
768 | break; | |
769 | } | |
770 | } | |
771 | if (port < 0) { | |
772 | printf("usb_new_device: cannot locate device's port..\n"); | |
773 | return 1; | |
774 | } | |
775 | ||
776 | /* reset the port for the second time */ | |
777 | err = hub_port_reset(dev->parent, port, &portstatus); | |
778 | if (err < 0) { | |
779 | printf("\n Couldn't reset port %i\n", port); | |
780 | return 1; | |
781 | } | |
782 | } | |
783 | #else | |
784 | /* and this is the old and known way of initializing devices */ | |
affae2bf WD |
785 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8); |
786 | if (err < 8) { | |
787 | printf("\n USB device not responding, giving up (status=%lX)\n",dev->status); | |
788 | return 1; | |
789 | } | |
9c998aa8 WD |
790 | #endif |
791 | ||
affae2bf WD |
792 | dev->epmaxpacketin [0] = dev->descriptor.bMaxPacketSize0; |
793 | dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; | |
794 | switch (dev->descriptor.bMaxPacketSize0) { | |
795 | case 8: dev->maxpacketsize = 0; break; | |
796 | case 16: dev->maxpacketsize = 1; break; | |
797 | case 32: dev->maxpacketsize = 2; break; | |
798 | case 64: dev->maxpacketsize = 3; break; | |
799 | } | |
800 | dev->devnum = addr; | |
801 | ||
802 | err = usb_set_address(dev); /* set address */ | |
803 | ||
804 | if (err < 0) { | |
805 | printf("\n USB device not accepting new address (error=%lX)\n", dev->status); | |
806 | return 1; | |
807 | } | |
808 | ||
809 | wait_ms(10); /* Let the SET_ADDRESS settle */ | |
810 | ||
811 | tmp = sizeof(dev->descriptor); | |
812 | ||
813 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, sizeof(dev->descriptor)); | |
814 | if (err < tmp) { | |
815 | if (err < 0) | |
816 | printf("unable to get device descriptor (error=%d)\n",err); | |
817 | else | |
818 | printf("USB device descriptor short read (expected %i, got %i)\n",tmp,err); | |
819 | return 1; | |
820 | } | |
821 | /* correct le values */ | |
c918261c CE |
822 | le16_to_cpus(&dev->descriptor.bcdUSB); |
823 | le16_to_cpus(&dev->descriptor.idVendor); | |
824 | le16_to_cpus(&dev->descriptor.idProduct); | |
825 | le16_to_cpus(&dev->descriptor.bcdDevice); | |
affae2bf WD |
826 | /* only support for one config for now */ |
827 | usb_get_configuration_no(dev,&tmpbuf[0],0); | |
828 | usb_parse_config(dev,&tmpbuf[0],0); | |
829 | usb_set_maxpacket(dev); | |
830 | /* we set the default configuration here */ | |
831 | if (usb_set_configuration(dev, dev->config.bConfigurationValue)) { | |
832 | printf("failed to set default configuration len %d, status %lX\n",dev->act_len,dev->status); | |
833 | return -1; | |
834 | } | |
835 | USB_PRINTF("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", | |
836 | dev->descriptor.iManufacturer, dev->descriptor.iProduct, dev->descriptor.iSerialNumber); | |
837 | memset(dev->mf, 0, sizeof(dev->mf)); | |
838 | memset(dev->prod, 0, sizeof(dev->prod)); | |
839 | memset(dev->serial, 0, sizeof(dev->serial)); | |
840 | if (dev->descriptor.iManufacturer) | |
841 | usb_string(dev, dev->descriptor.iManufacturer, dev->mf, sizeof(dev->mf)); | |
842 | if (dev->descriptor.iProduct) | |
843 | usb_string(dev, dev->descriptor.iProduct, dev->prod, sizeof(dev->prod)); | |
844 | if (dev->descriptor.iSerialNumber) | |
845 | usb_string(dev, dev->descriptor.iSerialNumber, dev->serial, sizeof(dev->serial)); | |
846 | USB_PRINTF("Manufacturer %s\n", dev->mf); | |
847 | USB_PRINTF("Product %s\n", dev->prod); | |
848 | USB_PRINTF("SerialNumber %s\n", dev->serial); | |
849 | /* now prode if the device is a hub */ | |
850 | usb_hub_probe(dev,0); | |
851 | return 0; | |
852 | } | |
853 | ||
854 | /* build device Tree */ | |
855 | void usb_scan_devices(void) | |
856 | { | |
857 | int i; | |
858 | struct usb_device *dev; | |
859 | ||
860 | /* first make all devices unknown */ | |
861 | for(i=0;i<USB_MAX_DEVICE;i++) { | |
862 | memset(&usb_dev[i],0,sizeof(struct usb_device)); | |
d0ff51ba | 863 | usb_dev[i].devnum = -1; |
affae2bf WD |
864 | } |
865 | dev_index=0; | |
866 | /* device 0 is always present (root hub, so let it analyze) */ | |
867 | dev=usb_alloc_new_device(); | |
868 | usb_new_device(dev); | |
9c998aa8 | 869 | printf("%d USB Device(s) found\n",dev_index); |
affae2bf WD |
870 | /* insert "driver" if possible */ |
871 | #ifdef CONFIG_USB_KEYBOARD | |
872 | drv_usb_kbd_init(); | |
873 | USB_PRINTF("scan end\n"); | |
874 | #endif | |
875 | } | |
876 | ||
877 | ||
878 | /**************************************************************************** | |
879 | * HUB "Driver" | |
880 | * Probes device for being a hub and configurate it | |
881 | */ | |
882 | ||
883 | #undef USB_HUB_DEBUG | |
884 | ||
885 | #ifdef USB_HUB_DEBUG | |
886 | #define USB_HUB_PRINTF(fmt,args...) printf (fmt ,##args) | |
887 | #else | |
888 | #define USB_HUB_PRINTF(fmt,args...) | |
889 | #endif | |
890 | ||
891 | ||
892 | static struct usb_hub_device hub_dev[USB_MAX_HUB]; | |
893 | static int usb_hub_index; | |
894 | ||
895 | ||
896 | int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) | |
897 | { | |
898 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
899 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, | |
900 | USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT); | |
901 | } | |
902 | ||
903 | int usb_clear_hub_feature(struct usb_device *dev, int feature) | |
904 | { | |
905 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
906 | USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, 0, NULL, 0, USB_CNTL_TIMEOUT); | |
907 | } | |
908 | ||
909 | int usb_clear_port_feature(struct usb_device *dev, int port, int feature) | |
910 | { | |
911 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
912 | USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, port, NULL, 0, USB_CNTL_TIMEOUT); | |
913 | } | |
914 | ||
915 | int usb_set_port_feature(struct usb_device *dev, int port, int feature) | |
916 | { | |
917 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
918 | USB_REQ_SET_FEATURE, USB_RT_PORT, feature, port, NULL, 0, USB_CNTL_TIMEOUT); | |
919 | } | |
920 | ||
921 | int usb_get_hub_status(struct usb_device *dev, void *data) | |
922 | { | |
923 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
924 | USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, | |
925 | data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); | |
926 | } | |
927 | ||
928 | int usb_get_port_status(struct usb_device *dev, int port, void *data) | |
929 | { | |
930 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
931 | USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, | |
932 | data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); | |
933 | } | |
934 | ||
935 | ||
936 | static void usb_hub_power_on(struct usb_hub_device *hub) | |
937 | { | |
938 | int i; | |
939 | struct usb_device *dev; | |
940 | ||
941 | dev=hub->pusb_dev; | |
942 | /* Enable power to the ports */ | |
943 | USB_HUB_PRINTF("enabling power on all ports\n"); | |
944 | for (i = 0; i < dev->maxchild; i++) { | |
945 | usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); | |
946 | USB_HUB_PRINTF("port %d returns %lX\n",i+1,dev->status); | |
947 | wait_ms(hub->desc.bPwrOn2PwrGood * 2); | |
948 | } | |
949 | } | |
950 | ||
951 | void usb_hub_reset(void) | |
952 | { | |
953 | usb_hub_index=0; | |
954 | } | |
955 | ||
956 | struct usb_hub_device *usb_hub_allocate(void) | |
957 | { | |
958 | if(usb_hub_index<USB_MAX_HUB) { | |
959 | return &hub_dev[usb_hub_index++]; | |
960 | } | |
961 | printf("ERROR: USB_MAX_HUB (%d) reached\n",USB_MAX_HUB); | |
962 | return NULL; | |
963 | } | |
964 | ||
965 | #define MAX_TRIES 5 | |
966 | ||
9c998aa8 WD |
967 | static int hub_port_reset(struct usb_device *dev, int port, |
968 | unsigned short *portstat) | |
affae2bf | 969 | { |
9c998aa8 | 970 | int tries; |
affae2bf WD |
971 | struct usb_port_status portsts; |
972 | unsigned short portstatus, portchange; | |
affae2bf | 973 | |
affae2bf | 974 | |
9c998aa8 | 975 | USB_HUB_PRINTF("hub_port_reset: resetting port %d...\n", port); |
affae2bf WD |
976 | for(tries=0;tries<MAX_TRIES;tries++) { |
977 | ||
978 | usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); | |
979 | wait_ms(200); | |
980 | ||
981 | if (usb_get_port_status(dev, port + 1, &portsts)<0) { | |
982 | USB_HUB_PRINTF("get_port_status failed status %lX\n",dev->status); | |
9c998aa8 | 983 | return -1; |
affae2bf | 984 | } |
c918261c CE |
985 | portstatus = le16_to_cpu(portsts.wPortStatus); |
986 | portchange = le16_to_cpu(portsts.wPortChange); | |
affae2bf WD |
987 | USB_HUB_PRINTF("portstatus %x, change %x, %s\n", portstatus ,portchange, |
988 | portstatus&(1<<USB_PORT_FEAT_LOWSPEED) ? "Low Speed" : "High Speed"); | |
989 | USB_HUB_PRINTF("STAT_C_CONNECTION = %d STAT_CONNECTION = %d USB_PORT_STAT_ENABLE %d\n", | |
990 | (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0, | |
991 | (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0, | |
992 | (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0); | |
993 | if ((portchange & USB_PORT_STAT_C_CONNECTION) || | |
994 | !(portstatus & USB_PORT_STAT_CONNECTION)) | |
9c998aa8 | 995 | return -1; |
affae2bf | 996 | |
9c998aa8 | 997 | if (portstatus & USB_PORT_STAT_ENABLE) { |
095b8a37 | 998 | |
affae2bf | 999 | break; |
9c998aa8 | 1000 | } |
affae2bf WD |
1001 | |
1002 | wait_ms(200); | |
1003 | } | |
1004 | ||
1005 | if (tries==MAX_TRIES) { | |
1006 | USB_HUB_PRINTF("Cannot enable port %i after %i retries, disabling port.\n", port+1, MAX_TRIES); | |
1007 | USB_HUB_PRINTF("Maybe the USB cable is bad?\n"); | |
9c998aa8 | 1008 | return -1; |
affae2bf WD |
1009 | } |
1010 | ||
1011 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); | |
9c998aa8 WD |
1012 | *portstat = portstatus; |
1013 | return 0; | |
1014 | ||
1015 | } | |
1016 | ||
1017 | ||
1018 | void usb_hub_port_connect_change(struct usb_device *dev, int port) | |
1019 | { | |
1020 | struct usb_device *usb; | |
1021 | struct usb_port_status portsts; | |
1022 | unsigned short portstatus, portchange; | |
1023 | ||
1024 | /* Check status */ | |
1025 | if (usb_get_port_status(dev, port + 1, &portsts)<0) { | |
1026 | USB_HUB_PRINTF("get_port_status failed\n"); | |
1027 | return; | |
1028 | } | |
1029 | ||
c918261c CE |
1030 | portstatus = le16_to_cpu(portsts.wPortStatus); |
1031 | portchange = le16_to_cpu(portsts.wPortChange); | |
9c998aa8 WD |
1032 | USB_HUB_PRINTF("portstatus %x, change %x, %s\n", portstatus, portchange, |
1033 | portstatus&(1<<USB_PORT_FEAT_LOWSPEED) ? "Low Speed" : "High Speed"); | |
1034 | ||
1035 | /* Clear the connection change status */ | |
1036 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION); | |
1037 | ||
1038 | /* Disconnect any existing devices under this port */ | |
1039 | if (((!(portstatus & USB_PORT_STAT_CONNECTION)) && | |
1040 | (!(portstatus & USB_PORT_STAT_ENABLE)))|| (dev->children[port])) { | |
1041 | USB_HUB_PRINTF("usb_disconnect(&hub->children[port]);\n"); | |
1042 | /* Return now if nothing is connected */ | |
1043 | if (!(portstatus & USB_PORT_STAT_CONNECTION)) | |
1044 | return; | |
1045 | } | |
1046 | wait_ms(200); | |
1047 | ||
1048 | /* Reset the port */ | |
1049 | if (hub_port_reset(dev, port, &portstatus) < 0) { | |
1050 | printf("cannot reset port %i!?\n", port + 1); | |
1051 | return; | |
1052 | } | |
1053 | ||
affae2bf WD |
1054 | wait_ms(200); |
1055 | ||
1056 | /* Allocate a new device struct for it */ | |
1057 | usb=usb_alloc_new_device(); | |
1058 | usb->slow = (portstatus & USB_PORT_STAT_LOW_SPEED) ? 1 : 0; | |
1059 | ||
1060 | dev->children[port] = usb; | |
1061 | usb->parent=dev; | |
1062 | /* Run it through the hoops (find a driver, etc) */ | |
1063 | if (usb_new_device(usb)) { | |
1064 | /* Woops, disable the port */ | |
1065 | USB_HUB_PRINTF("hub: disabling port %d\n", port + 1); | |
1066 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); | |
1067 | } | |
1068 | } | |
1069 | ||
1070 | ||
1071 | int usb_hub_configure(struct usb_device *dev) | |
1072 | { | |
cd0a9de6 | 1073 | unsigned char buffer[USB_BUFSIZ], *bitmap; |
affae2bf WD |
1074 | struct usb_hub_descriptor *descriptor; |
1075 | struct usb_hub_status *hubsts; | |
1076 | int i; | |
1077 | struct usb_hub_device *hub; | |
1078 | ||
1079 | /* "allocate" Hub device */ | |
1080 | hub=usb_hub_allocate(); | |
1081 | if(hub==NULL) | |
1082 | return -1; | |
1083 | hub->pusb_dev=dev; | |
1084 | /* Get the the hub descriptor */ | |
1085 | if (usb_get_hub_descriptor(dev, buffer, 4) < 0) { | |
1086 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub descriptor, giving up %lX\n",dev->status); | |
1087 | return -1; | |
1088 | } | |
1089 | descriptor = (struct usb_hub_descriptor *)buffer; | |
cd0a9de6 | 1090 | |
e86e5a07 WD |
1091 | /* silence compiler warning if USB_BUFSIZ is > 256 [= sizeof(char)] */ |
1092 | i = descriptor->bLength; | |
1093 | if (i > USB_BUFSIZ) { | |
727f6333 | 1094 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub descriptor - too long: %d\n", |
cd0a9de6 WD |
1095 | descriptor->bLength); |
1096 | return -1; | |
1097 | } | |
1098 | ||
affae2bf WD |
1099 | if (usb_get_hub_descriptor(dev, buffer, descriptor->bLength) < 0) { |
1100 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub descriptor 2nd giving up %lX\n",dev->status); | |
1101 | return -1; | |
1102 | } | |
1103 | memcpy((unsigned char *)&hub->desc,buffer,descriptor->bLength); | |
1104 | /* adjust 16bit values */ | |
c918261c | 1105 | hub->desc.wHubCharacteristics = le16_to_cpu(descriptor->wHubCharacteristics); |
affae2bf WD |
1106 | /* set the bitmap */ |
1107 | bitmap=(unsigned char *)&hub->desc.DeviceRemovable[0]; | |
1108 | memset(bitmap,0xff,(USB_MAXCHILDREN+1+7)/8); /* devices not removable by default */ | |
1109 | bitmap=(unsigned char *)&hub->desc.PortPowerCtrlMask[0]; | |
1110 | memset(bitmap,0xff,(USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */ | |
1111 | for(i=0;i<((hub->desc.bNbrPorts + 1 + 7)/8);i++) { | |
1112 | hub->desc.DeviceRemovable[i]=descriptor->DeviceRemovable[i]; | |
1113 | } | |
1114 | for(i=0;i<((hub->desc.bNbrPorts + 1 + 7)/8);i++) { | |
1115 | hub->desc.DeviceRemovable[i]=descriptor->PortPowerCtrlMask[i]; | |
1116 | } | |
1117 | dev->maxchild = descriptor->bNbrPorts; | |
1118 | USB_HUB_PRINTF("%d ports detected\n", dev->maxchild); | |
1119 | ||
1120 | switch (hub->desc.wHubCharacteristics & HUB_CHAR_LPSM) { | |
1121 | case 0x00: | |
1122 | USB_HUB_PRINTF("ganged power switching\n"); | |
1123 | break; | |
1124 | case 0x01: | |
1125 | USB_HUB_PRINTF("individual port power switching\n"); | |
1126 | break; | |
1127 | case 0x02: | |
1128 | case 0x03: | |
1129 | USB_HUB_PRINTF("unknown reserved power switching mode\n"); | |
1130 | break; | |
1131 | } | |
1132 | ||
1133 | if (hub->desc.wHubCharacteristics & HUB_CHAR_COMPOUND) | |
1134 | USB_HUB_PRINTF("part of a compound device\n"); | |
1135 | else | |
1136 | USB_HUB_PRINTF("standalone hub\n"); | |
1137 | ||
1138 | switch (hub->desc.wHubCharacteristics & HUB_CHAR_OCPM) { | |
1139 | case 0x00: | |
1140 | USB_HUB_PRINTF("global over-current protection\n"); | |
1141 | break; | |
1142 | case 0x08: | |
1143 | USB_HUB_PRINTF("individual port over-current protection\n"); | |
1144 | break; | |
1145 | case 0x10: | |
1146 | case 0x18: | |
1147 | USB_HUB_PRINTF("no over-current protection\n"); | |
1148 | break; | |
1149 | } | |
1150 | USB_HUB_PRINTF("power on to power good time: %dms\n", descriptor->bPwrOn2PwrGood * 2); | |
1151 | USB_HUB_PRINTF("hub controller current requirement: %dmA\n", descriptor->bHubContrCurrent); | |
1152 | for (i = 0; i < dev->maxchild; i++) | |
1153 | USB_HUB_PRINTF("port %d is%s removable\n", i + 1, | |
1154 | hub->desc.DeviceRemovable[(i + 1)/8] & (1 << ((i + 1)%8)) ? " not" : ""); | |
cd0a9de6 WD |
1155 | if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { |
1156 | USB_HUB_PRINTF("usb_hub_configure: failed to get Status - too long: %d\n", | |
1157 | descriptor->bLength); | |
1158 | return -1; | |
1159 | } | |
1160 | ||
affae2bf WD |
1161 | if (usb_get_hub_status(dev, buffer) < 0) { |
1162 | USB_HUB_PRINTF("usb_hub_configure: failed to get Status %lX\n",dev->status); | |
1163 | return -1; | |
1164 | } | |
1165 | hubsts = (struct usb_hub_status *)buffer; | |
1166 | USB_HUB_PRINTF("get_hub_status returned status %X, change %X\n", | |
c918261c | 1167 | le16_to_cpu(hubsts->wHubStatus),le16_to_cpu(hubsts->wHubChange)); |
affae2bf | 1168 | USB_HUB_PRINTF("local power source is %s\n", |
c918261c | 1169 | (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? "lost (inactive)" : "good"); |
affae2bf | 1170 | USB_HUB_PRINTF("%sover-current condition exists\n", |
c918261c | 1171 | (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? "" : "no "); |
affae2bf WD |
1172 | usb_hub_power_on(hub); |
1173 | for (i = 0; i < dev->maxchild; i++) { | |
1174 | struct usb_port_status portsts; | |
1175 | unsigned short portstatus, portchange; | |
1176 | ||
1177 | if (usb_get_port_status(dev, i + 1, &portsts) < 0) { | |
1178 | USB_HUB_PRINTF("get_port_status failed\n"); | |
1179 | continue; | |
1180 | } | |
c918261c CE |
1181 | portstatus = le16_to_cpu(portsts.wPortStatus); |
1182 | portchange = le16_to_cpu(portsts.wPortChange); | |
affae2bf WD |
1183 | USB_HUB_PRINTF("Port %d Status %X Change %X\n",i+1,portstatus,portchange); |
1184 | if (portchange & USB_PORT_STAT_C_CONNECTION) { | |
1185 | USB_HUB_PRINTF("port %d connection change\n", i + 1); | |
1186 | usb_hub_port_connect_change(dev, i); | |
1187 | } | |
1188 | if (portchange & USB_PORT_STAT_C_ENABLE) { | |
1189 | USB_HUB_PRINTF("port %d enable change, status %x\n", i + 1, portstatus); | |
1190 | usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE); | |
1191 | ||
1192 | /* EM interference sometimes causes bad shielded USB devices to | |
1193 | * be shutdown by the hub, this hack enables them again. | |
1194 | * Works at least with mouse driver */ | |
1195 | if (!(portstatus & USB_PORT_STAT_ENABLE) && | |
1196 | (portstatus & USB_PORT_STAT_CONNECTION) && (dev->children[i])) { | |
1197 | USB_HUB_PRINTF("already running port %i disabled by hub (EMI?), re-enabling...\n", | |
1198 | i + 1); | |
1199 | usb_hub_port_connect_change(dev, i); | |
1200 | } | |
1201 | } | |
1202 | if (portstatus & USB_PORT_STAT_SUSPEND) { | |
1203 | USB_HUB_PRINTF("port %d suspend change\n", i + 1); | |
1204 | usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_SUSPEND); | |
1205 | } | |
1206 | ||
1207 | if (portchange & USB_PORT_STAT_C_OVERCURRENT) { | |
1208 | USB_HUB_PRINTF("port %d over-current change\n", i + 1); | |
1209 | usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_OVER_CURRENT); | |
1210 | usb_hub_power_on(hub); | |
1211 | } | |
1212 | ||
1213 | if (portchange & USB_PORT_STAT_C_RESET) { | |
1214 | USB_HUB_PRINTF("port %d reset change\n", i + 1); | |
1215 | usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET); | |
1216 | } | |
1217 | } /* end for i all ports */ | |
1218 | ||
1219 | return 0; | |
1220 | } | |
1221 | ||
1222 | int usb_hub_probe(struct usb_device *dev, int ifnum) | |
1223 | { | |
1224 | struct usb_interface_descriptor *iface; | |
1225 | struct usb_endpoint_descriptor *ep; | |
1226 | int ret; | |
1227 | ||
1228 | iface = &dev->config.if_desc[ifnum]; | |
1229 | /* Is it a hub? */ | |
1230 | if (iface->bInterfaceClass != USB_CLASS_HUB) | |
1231 | return 0; | |
1232 | /* Some hubs have a subclass of 1, which AFAICT according to the */ | |
1233 | /* specs is not defined, but it works */ | |
1234 | if ((iface->bInterfaceSubClass != 0) && | |
1235 | (iface->bInterfaceSubClass != 1)) | |
1236 | return 0; | |
1237 | /* Multiple endpoints? What kind of mutant ninja-hub is this? */ | |
1238 | if (iface->bNumEndpoints != 1) | |
1239 | return 0; | |
1240 | ep = &iface->ep_desc[0]; | |
1241 | /* Output endpoint? Curiousier and curiousier.. */ | |
1242 | if (!(ep->bEndpointAddress & USB_DIR_IN)) | |
1243 | return 0; | |
1244 | /* If it's not an interrupt endpoint, we'd better punt! */ | |
1245 | if ((ep->bmAttributes & 3) != 3) | |
1246 | return 0; | |
1247 | /* We found a hub */ | |
1248 | USB_HUB_PRINTF("USB hub found\n"); | |
1249 | ret=usb_hub_configure(dev); | |
1250 | return ret; | |
1251 | } | |
1252 | ||
affae2bf | 1253 | /* EOF */ |