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Coding style cleanup, update CHANGELOG.
[people/ms/u-boot.git] / drivers / serial / usbtty.c
1 /*
2 * (C) Copyright 2003
3 * Gerry Hamel, geh@ti.com, Texas Instruments
4 *
5 * (C) Copyright 2006
6 * Bryan O'Donoghue, bodonoghue@codehermit.ie
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 #include <common.h>
25 #include <config.h>
26 #include <circbuf.h>
27 #include <devices.h>
28 #include "usbtty.h"
29 #include "usb_cdc_acm.h"
30 #include "usbdescriptors.h"
31
32 #ifdef DEBUG
33 #define TTYDBG(fmt,args...)\
34 serial_printf("[%s] %s %d: "fmt, __FILE__,__FUNCTION__,__LINE__,##args)
35 #else
36 #define TTYDBG(fmt,args...) do{}while(0)
37 #endif
38
39 #if 1
40 #define TTYERR(fmt,args...)\
41 serial_printf("ERROR![%s] %s %d: "fmt, __FILE__,__FUNCTION__,\
42 __LINE__,##args)
43 #else
44 #define TTYERR(fmt,args...) do{}while(0)
45 #endif
46
47 /*
48 * Defines
49 */
50 #define NUM_CONFIGS 1
51 #define MAX_INTERFACES 2
52 #define NUM_ENDPOINTS 3
53 #define ACM_TX_ENDPOINT 3
54 #define ACM_RX_ENDPOINT 2
55 #define GSERIAL_TX_ENDPOINT 2
56 #define GSERIAL_RX_ENDPOINT 1
57 #define NUM_ACM_INTERFACES 2
58 #define NUM_GSERIAL_INTERFACES 1
59 #define CONFIG_USBD_DATA_INTERFACE_STR "Bulk Data Interface"
60 #define CONFIG_USBD_CTRL_INTERFACE_STR "Control Interface"
61
62 /*
63 * Buffers to hold input and output data
64 */
65 #define USBTTY_BUFFER_SIZE 256
66 static circbuf_t usbtty_input;
67 static circbuf_t usbtty_output;
68
69
70 /*
71 * Instance variables
72 */
73 static device_t usbttydev;
74 static struct usb_device_instance device_instance[1];
75 static struct usb_bus_instance bus_instance[1];
76 static struct usb_configuration_instance config_instance[NUM_CONFIGS];
77 static struct usb_interface_instance interface_instance[MAX_INTERFACES];
78 static struct usb_alternate_instance alternate_instance[MAX_INTERFACES];
79 /* one extra for control endpoint */
80 static struct usb_endpoint_instance endpoint_instance[NUM_ENDPOINTS+1];
81
82 /*
83 * Global flag
84 */
85 int usbtty_configured_flag = 0;
86
87 /*
88 * Serial number
89 */
90 static char serial_number[16];
91
92
93 /*
94 * Descriptors, Strings, Local variables.
95 */
96
97 /* defined and used by usbdcore_ep0.c */
98 extern struct usb_string_descriptor **usb_strings;
99
100 /* Indicies, References */
101 static unsigned short rx_endpoint = 0;
102 static unsigned short tx_endpoint = 0;
103 static unsigned short interface_count = 0;
104 static struct usb_string_descriptor *usbtty_string_table[STR_COUNT];
105
106 /* USB Descriptor Strings */
107 static u8 wstrLang[4] = {4,USB_DT_STRING,0x9,0x4};
108 static u8 wstrManufacturer[2 + 2*(sizeof(CONFIG_USBD_MANUFACTURER)-1)];
109 static u8 wstrProduct[2 + 2*(sizeof(CONFIG_USBD_PRODUCT_NAME)-1)];
110 static u8 wstrSerial[2 + 2*(sizeof(serial_number) - 1)];
111 static u8 wstrConfiguration[2 + 2*(sizeof(CONFIG_USBD_CONFIGURATION_STR)-1)];
112 static u8 wstrDataInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
113 static u8 wstrCtrlInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
114
115 /* Standard USB Data Structures */
116 static struct usb_interface_descriptor interface_descriptors[MAX_INTERFACES];
117 static struct usb_endpoint_descriptor *ep_descriptor_ptrs[NUM_ENDPOINTS];
118 static struct usb_configuration_descriptor *configuration_descriptor = 0;
119 static struct usb_device_descriptor device_descriptor = {
120 .bLength = sizeof(struct usb_device_descriptor),
121 .bDescriptorType = USB_DT_DEVICE,
122 .bcdUSB = cpu_to_le16(USB_BCD_VERSION),
123 .bDeviceSubClass = 0x00,
124 .bDeviceProtocol = 0x00,
125 .bMaxPacketSize0 = EP0_MAX_PACKET_SIZE,
126 .idVendor = cpu_to_le16(CONFIG_USBD_VENDORID),
127 .bcdDevice = cpu_to_le16(USBTTY_BCD_DEVICE),
128 .iManufacturer = STR_MANUFACTURER,
129 .iProduct = STR_PRODUCT,
130 .iSerialNumber = STR_SERIAL,
131 .bNumConfigurations = NUM_CONFIGS
132 };
133
134
135 /*
136 * Static CDC ACM specific descriptors
137 */
138
139 struct acm_config_desc {
140 struct usb_configuration_descriptor configuration_desc;
141
142 /* Master Interface */
143 struct usb_interface_descriptor interface_desc;
144
145 struct usb_class_header_function_descriptor usb_class_header;
146 struct usb_class_call_management_descriptor usb_class_call_mgt;
147 struct usb_class_abstract_control_descriptor usb_class_acm;
148 struct usb_class_union_function_descriptor usb_class_union;
149 struct usb_endpoint_descriptor notification_endpoint;
150
151 /* Slave Interface */
152 struct usb_interface_descriptor data_class_interface;
153 struct usb_endpoint_descriptor
154 data_endpoints[NUM_ENDPOINTS-1] __attribute__((packed));
155 } __attribute__((packed));
156
157 static struct acm_config_desc acm_configuration_descriptors[NUM_CONFIGS] = {
158 {
159 .configuration_desc ={
160 .bLength =
161 sizeof(struct usb_configuration_descriptor),
162 .bDescriptorType = USB_DT_CONFIG,
163 .wTotalLength =
164 cpu_to_le16(sizeof(struct acm_config_desc)),
165 .bNumInterfaces = NUM_ACM_INTERFACES,
166 .bConfigurationValue = 1,
167 .iConfiguration = STR_CONFIG,
168 .bmAttributes =
169 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
170 .bMaxPower = USBTTY_MAXPOWER
171 },
172 /* Interface 1 */
173 .interface_desc = {
174 .bLength = sizeof(struct usb_interface_descriptor),
175 .bDescriptorType = USB_DT_INTERFACE,
176 .bInterfaceNumber = 0,
177 .bAlternateSetting = 0,
178 .bNumEndpoints = 0x01,
179 .bInterfaceClass =
180 COMMUNICATIONS_INTERFACE_CLASS_CONTROL,
181 .bInterfaceSubClass = COMMUNICATIONS_ACM_SUBCLASS,
182 .bInterfaceProtocol = COMMUNICATIONS_V25TER_PROTOCOL,
183 .iInterface = STR_CTRL_INTERFACE,
184 },
185 .usb_class_header = {
186 .bFunctionLength =
187 sizeof(struct usb_class_header_function_descriptor),
188 .bDescriptorType = CS_INTERFACE,
189 .bDescriptorSubtype = USB_ST_HEADER,
190 .bcdCDC = cpu_to_le16(110),
191 },
192 .usb_class_call_mgt = {
193 .bFunctionLength =
194 sizeof(struct usb_class_call_management_descriptor),
195 .bDescriptorType = CS_INTERFACE,
196 .bDescriptorSubtype = USB_ST_CMF,
197 .bmCapabilities = 0x00,
198 .bDataInterface = 0x01,
199 },
200 .usb_class_acm = {
201 .bFunctionLength =
202 sizeof(struct usb_class_abstract_control_descriptor),
203 .bDescriptorType = CS_INTERFACE,
204 .bDescriptorSubtype = USB_ST_ACMF,
205 .bmCapabilities = 0x00,
206 },
207 .usb_class_union = {
208 .bFunctionLength =
209 sizeof(struct usb_class_union_function_descriptor),
210 .bDescriptorType = CS_INTERFACE,
211 .bDescriptorSubtype = USB_ST_UF,
212 .bMasterInterface = 0x00,
213 .bSlaveInterface0 = 0x01,
214 },
215 .notification_endpoint = {
216 .bLength =
217 sizeof(struct usb_endpoint_descriptor),
218 .bDescriptorType = USB_DT_ENDPOINT,
219 .bEndpointAddress = 0x01 | USB_DIR_IN,
220 .bmAttributes = USB_ENDPOINT_XFER_INT,
221 .wMaxPacketSize
222 = cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
223 .bInterval = 0xFF,
224 },
225
226 /* Interface 2 */
227 .data_class_interface = {
228 .bLength =
229 sizeof(struct usb_interface_descriptor),
230 .bDescriptorType = USB_DT_INTERFACE,
231 .bInterfaceNumber = 0x01,
232 .bAlternateSetting = 0x00,
233 .bNumEndpoints = 0x02,
234 .bInterfaceClass =
235 COMMUNICATIONS_INTERFACE_CLASS_DATA,
236 .bInterfaceSubClass = DATA_INTERFACE_SUBCLASS_NONE,
237 .bInterfaceProtocol = DATA_INTERFACE_PROTOCOL_NONE,
238 .iInterface = STR_DATA_INTERFACE,
239 },
240 .data_endpoints = {
241 {
242 .bLength =
243 sizeof(struct usb_endpoint_descriptor),
244 .bDescriptorType = USB_DT_ENDPOINT,
245 .bEndpointAddress = 0x02 | USB_DIR_OUT,
246 .bmAttributes =
247 USB_ENDPOINT_XFER_BULK,
248 .wMaxPacketSize =
249 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
250 .bInterval = 0xFF,
251 },
252 {
253 .bLength =
254 sizeof(struct usb_endpoint_descriptor),
255 .bDescriptorType = USB_DT_ENDPOINT,
256 .bEndpointAddress = 0x03 | USB_DIR_IN,
257 .bmAttributes =
258 USB_ENDPOINT_XFER_BULK,
259 .wMaxPacketSize =
260 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
261 .bInterval = 0xFF,
262 },
263 },
264 },
265 };
266
267 static struct rs232_emu rs232_desc={
268 .dter = 115200,
269 .stop_bits = 0x00,
270 .parity = 0x00,
271 .data_bits = 0x08
272 };
273
274
275 /*
276 * Static Generic Serial specific data
277 */
278
279
280 struct gserial_config_desc {
281
282 struct usb_configuration_descriptor configuration_desc;
283 struct usb_interface_descriptor
284 interface_desc[NUM_GSERIAL_INTERFACES] __attribute__((packed));
285 struct usb_endpoint_descriptor
286 data_endpoints[NUM_ENDPOINTS] __attribute__((packed));
287
288 } __attribute__((packed));
289
290 static struct gserial_config_desc
291 gserial_configuration_descriptors[NUM_CONFIGS] ={
292 {
293 .configuration_desc ={
294 .bLength = sizeof(struct usb_configuration_descriptor),
295 .bDescriptorType = USB_DT_CONFIG,
296 .wTotalLength =
297 cpu_to_le16(sizeof(struct gserial_config_desc)),
298 .bNumInterfaces = NUM_GSERIAL_INTERFACES,
299 .bConfigurationValue = 1,
300 .iConfiguration = STR_CONFIG,
301 .bmAttributes =
302 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
303 .bMaxPower = USBTTY_MAXPOWER
304 },
305 .interface_desc = {
306 {
307 .bLength =
308 sizeof(struct usb_interface_descriptor),
309 .bDescriptorType = USB_DT_INTERFACE,
310 .bInterfaceNumber = 0,
311 .bAlternateSetting = 0,
312 .bNumEndpoints = NUM_ENDPOINTS,
313 .bInterfaceClass =
314 COMMUNICATIONS_INTERFACE_CLASS_VENDOR,
315 .bInterfaceSubClass =
316 COMMUNICATIONS_NO_SUBCLASS,
317 .bInterfaceProtocol =
318 COMMUNICATIONS_NO_PROTOCOL,
319 .iInterface = STR_DATA_INTERFACE
320 },
321 },
322 .data_endpoints = {
323 {
324 .bLength =
325 sizeof(struct usb_endpoint_descriptor),
326 .bDescriptorType = USB_DT_ENDPOINT,
327 .bEndpointAddress = 0x01 | USB_DIR_OUT,
328 .bmAttributes = USB_ENDPOINT_XFER_BULK,
329 .wMaxPacketSize =
330 cpu_to_le16(CONFIG_USBD_SERIAL_OUT_PKTSIZE),
331 .bInterval= 0xFF,
332 },
333 {
334 .bLength =
335 sizeof(struct usb_endpoint_descriptor),
336 .bDescriptorType = USB_DT_ENDPOINT,
337 .bEndpointAddress = 0x02 | USB_DIR_IN,
338 .bmAttributes = USB_ENDPOINT_XFER_BULK,
339 .wMaxPacketSize =
340 cpu_to_le16(CONFIG_USBD_SERIAL_IN_PKTSIZE),
341 .bInterval = 0xFF,
342 },
343 {
344 .bLength =
345 sizeof(struct usb_endpoint_descriptor),
346 .bDescriptorType = USB_DT_ENDPOINT,
347 .bEndpointAddress = 0x03 | USB_DIR_IN,
348 .bmAttributes = USB_ENDPOINT_XFER_INT,
349 .wMaxPacketSize =
350 cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
351 .bInterval = 0xFF,
352 },
353 },
354 },
355 };
356
357 /*
358 * Static Function Prototypes
359 */
360
361 static void usbtty_init_strings (void);
362 static void usbtty_init_instances (void);
363 static void usbtty_init_endpoints (void);
364 static void usbtty_init_terminal_type(short type);
365 static void usbtty_event_handler (struct usb_device_instance *device,
366 usb_device_event_t event, int data);
367 static int usbtty_cdc_setup(struct usb_device_request *request,
368 struct urb *urb);
369 static int usbtty_configured (void);
370 static int write_buffer (circbuf_t * buf);
371 static int fill_buffer (circbuf_t * buf);
372
373 void usbtty_poll (void);
374
375 /* utility function for converting char* to wide string used by USB */
376 static void str2wide (char *str, u16 * wide)
377 {
378 int i;
379 for (i = 0; i < strlen (str) && str[i]; i++){
380 #if defined(__LITTLE_ENDIAN)
381 wide[i] = (u16) str[i];
382 #elif defined(__BIG_ENDIAN)
383 wide[i] = ((u16)(str[i])<<8);
384 #else
385 #error "__LITTLE_ENDIAN or __BIG_ENDIAN undefined"
386 #endif
387 }
388 }
389
390 /*
391 * Test whether a character is in the RX buffer
392 */
393
394 int usbtty_tstc (void)
395 {
396 struct usb_endpoint_instance *endpoint =
397 &endpoint_instance[rx_endpoint];
398
399 /* If no input data exists, allow more RX to be accepted */
400 if(usbtty_input.size <= 0){
401 udc_unset_nak(endpoint->endpoint_address&0x03);
402 }
403
404 usbtty_poll ();
405 return (usbtty_input.size > 0);
406 }
407
408 /*
409 * Read a single byte from the usb client port. Returns 1 on success, 0
410 * otherwise. When the function is succesfull, the character read is
411 * written into its argument c.
412 */
413
414 int usbtty_getc (void)
415 {
416 char c;
417 struct usb_endpoint_instance *endpoint =
418 &endpoint_instance[rx_endpoint];
419
420 while (usbtty_input.size <= 0) {
421 udc_unset_nak(endpoint->endpoint_address&0x03);
422 usbtty_poll ();
423 }
424
425 buf_pop (&usbtty_input, &c, 1);
426 udc_set_nak(endpoint->endpoint_address&0x03);
427
428 return c;
429 }
430
431 /*
432 * Output a single byte to the usb client port.
433 */
434 void usbtty_putc (const char c)
435 {
436 buf_push (&usbtty_output, &c, 1);
437 /* If \n, also do \r */
438 if (c == '\n')
439 buf_push (&usbtty_output, "\r", 1);
440
441 /* Poll at end to handle new data... */
442 if ((usbtty_output.size + 2) >= usbtty_output.totalsize) {
443 usbtty_poll ();
444 }
445 }
446
447 /* usbtty_puts() helper function for finding the next '\n' in a string */
448 static int next_nl_pos (const char *s)
449 {
450 int i;
451
452 for (i = 0; s[i] != '\0'; i++) {
453 if (s[i] == '\n')
454 return i;
455 }
456 return i;
457 }
458
459 /*
460 * Output a string to the usb client port - implementing flow control
461 */
462
463 static void __usbtty_puts (const char *str, int len)
464 {
465 int maxlen = usbtty_output.totalsize;
466 int space, n;
467
468 /* break str into chunks < buffer size, if needed */
469 while (len > 0) {
470 usbtty_poll ();
471
472 space = maxlen - usbtty_output.size;
473 /* Empty buffer here, if needed, to ensure space... */
474 if (space) {
475 write_buffer (&usbtty_output);
476
477 n = MIN (space, MIN (len, maxlen));
478 buf_push (&usbtty_output, str, n);
479
480 str += n;
481 len -= n;
482 }
483 }
484 }
485
486 void usbtty_puts (const char *str)
487 {
488 int n;
489 int len = strlen (str);
490
491 /* add '\r' for each '\n' */
492 while (len > 0) {
493 n = next_nl_pos (str);
494
495 if (str[n] == '\n') {
496 __usbtty_puts (str, n + 1);
497 __usbtty_puts ("\r", 1);
498 str += (n + 1);
499 len -= (n + 1);
500 } else {
501 /* No \n found. All done. */
502 __usbtty_puts (str, n);
503 break;
504 }
505 }
506
507 /* Poll at end to handle new data... */
508 usbtty_poll ();
509 }
510
511 /*
512 * Initialize the usb client port.
513 *
514 */
515 int drv_usbtty_init (void)
516 {
517 int rc;
518 char * sn;
519 char * tt;
520 int snlen;
521
522 /* Ger seiral number */
523 if (!(sn = getenv("serial#"))) {
524 sn = "000000000000";
525 }
526 snlen = strlen(sn);
527 if (snlen > sizeof(serial_number) - 1) {
528 printf ("Warning: serial number %s is too long (%d > %lu)\n",
529 sn, snlen, (ulong)(sizeof(serial_number) - 1));
530 snlen = sizeof(serial_number) - 1;
531 }
532 memcpy (serial_number, sn, snlen);
533 serial_number[snlen] = '\0';
534
535 /* Decide on which type of UDC device to be.
536 */
537
538 if(!(tt = getenv("usbtty"))) {
539 tt = "generic";
540 }
541 usbtty_init_terminal_type(strcmp(tt,"cdc_acm"));
542
543 /* prepare buffers... */
544 buf_init (&usbtty_input, USBTTY_BUFFER_SIZE);
545 buf_init (&usbtty_output, USBTTY_BUFFER_SIZE);
546
547 /* Now, set up USB controller and infrastructure */
548 udc_init (); /* Basic USB initialization */
549
550 usbtty_init_strings ();
551 usbtty_init_instances ();
552
553 udc_startup_events (device_instance);/* Enable dev, init udc pointers */
554 udc_connect (); /* Enable pullup for host detection */
555
556 usbtty_init_endpoints ();
557
558 /* Device initialization */
559 memset (&usbttydev, 0, sizeof (usbttydev));
560
561 strcpy (usbttydev.name, "usbtty");
562 usbttydev.ext = 0; /* No extensions */
563 usbttydev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_OUTPUT;
564 usbttydev.tstc = usbtty_tstc; /* 'tstc' function */
565 usbttydev.getc = usbtty_getc; /* 'getc' function */
566 usbttydev.putc = usbtty_putc; /* 'putc' function */
567 usbttydev.puts = usbtty_puts; /* 'puts' function */
568
569 rc = device_register (&usbttydev);
570
571 return (rc == 0) ? 1 : rc;
572 }
573
574 static void usbtty_init_strings (void)
575 {
576 struct usb_string_descriptor *string;
577
578 usbtty_string_table[STR_LANG] =
579 (struct usb_string_descriptor*)wstrLang;
580
581 string = (struct usb_string_descriptor *) wstrManufacturer;
582 string->bLength = sizeof(wstrManufacturer);
583 string->bDescriptorType = USB_DT_STRING;
584 str2wide (CONFIG_USBD_MANUFACTURER, string->wData);
585 usbtty_string_table[STR_MANUFACTURER]=string;
586
587
588 string = (struct usb_string_descriptor *) wstrProduct;
589 string->bLength = sizeof(wstrProduct);
590 string->bDescriptorType = USB_DT_STRING;
591 str2wide (CONFIG_USBD_PRODUCT_NAME, string->wData);
592 usbtty_string_table[STR_PRODUCT]=string;
593
594
595 string = (struct usb_string_descriptor *) wstrSerial;
596 string->bLength = sizeof(serial_number);
597 string->bDescriptorType = USB_DT_STRING;
598 str2wide (serial_number, string->wData);
599 usbtty_string_table[STR_SERIAL]=string;
600
601
602 string = (struct usb_string_descriptor *) wstrConfiguration;
603 string->bLength = sizeof(wstrConfiguration);
604 string->bDescriptorType = USB_DT_STRING;
605 str2wide (CONFIG_USBD_CONFIGURATION_STR, string->wData);
606 usbtty_string_table[STR_CONFIG]=string;
607
608
609 string = (struct usb_string_descriptor *) wstrDataInterface;
610 string->bLength = sizeof(wstrDataInterface);
611 string->bDescriptorType = USB_DT_STRING;
612 str2wide (CONFIG_USBD_DATA_INTERFACE_STR, string->wData);
613 usbtty_string_table[STR_DATA_INTERFACE]=string;
614
615 string = (struct usb_string_descriptor *) wstrCtrlInterface;
616 string->bLength = sizeof(wstrCtrlInterface);
617 string->bDescriptorType = USB_DT_STRING;
618 str2wide (CONFIG_USBD_CTRL_INTERFACE_STR, string->wData);
619 usbtty_string_table[STR_CTRL_INTERFACE]=string;
620
621 /* Now, initialize the string table for ep0 handling */
622 usb_strings = usbtty_string_table;
623 }
624
625 static void usbtty_init_instances (void)
626 {
627 int i;
628
629 /* initialize device instance */
630 memset (device_instance, 0, sizeof (struct usb_device_instance));
631 device_instance->device_state = STATE_INIT;
632 device_instance->device_descriptor = &device_descriptor;
633 device_instance->event = usbtty_event_handler;
634 device_instance->cdc_recv_setup = usbtty_cdc_setup;
635 device_instance->bus = bus_instance;
636 device_instance->configurations = NUM_CONFIGS;
637 device_instance->configuration_instance_array = config_instance;
638
639 /* initialize bus instance */
640 memset (bus_instance, 0, sizeof (struct usb_bus_instance));
641 bus_instance->device = device_instance;
642 bus_instance->endpoint_array = endpoint_instance;
643 bus_instance->max_endpoints = 1;
644 bus_instance->maxpacketsize = 64;
645 bus_instance->serial_number_str = serial_number;
646
647 /* configuration instance */
648 memset (config_instance, 0,
649 sizeof (struct usb_configuration_instance));
650 config_instance->interfaces = interface_count;
651 config_instance->configuration_descriptor = configuration_descriptor;
652 config_instance->interface_instance_array = interface_instance;
653
654 /* interface instance */
655 memset (interface_instance, 0,
656 sizeof (struct usb_interface_instance));
657 interface_instance->alternates = 1;
658 interface_instance->alternates_instance_array = alternate_instance;
659
660 /* alternates instance */
661 memset (alternate_instance, 0,
662 sizeof (struct usb_alternate_instance));
663 alternate_instance->interface_descriptor = interface_descriptors;
664 alternate_instance->endpoints = NUM_ENDPOINTS;
665 alternate_instance->endpoints_descriptor_array = ep_descriptor_ptrs;
666
667 /* endpoint instances */
668 memset (&endpoint_instance[0], 0,
669 sizeof (struct usb_endpoint_instance));
670 endpoint_instance[0].endpoint_address = 0;
671 endpoint_instance[0].rcv_packetSize = EP0_MAX_PACKET_SIZE;
672 endpoint_instance[0].rcv_attributes = USB_ENDPOINT_XFER_CONTROL;
673 endpoint_instance[0].tx_packetSize = EP0_MAX_PACKET_SIZE;
674 endpoint_instance[0].tx_attributes = USB_ENDPOINT_XFER_CONTROL;
675 udc_setup_ep (device_instance, 0, &endpoint_instance[0]);
676
677 for (i = 1; i <= NUM_ENDPOINTS; i++) {
678 memset (&endpoint_instance[i], 0,
679 sizeof (struct usb_endpoint_instance));
680
681 endpoint_instance[i].endpoint_address =
682 ep_descriptor_ptrs[i - 1]->bEndpointAddress;
683
684 endpoint_instance[i].rcv_attributes =
685 ep_descriptor_ptrs[i - 1]->bmAttributes;
686
687 endpoint_instance[i].rcv_packetSize =
688 le16_to_cpu(ep_descriptor_ptrs[i - 1]->wMaxPacketSize);
689
690 endpoint_instance[i].tx_attributes =
691 ep_descriptor_ptrs[i - 1]->bmAttributes;
692
693 endpoint_instance[i].tx_packetSize =
694 le16_to_cpu(ep_descriptor_ptrs[i - 1]->wMaxPacketSize);
695
696 endpoint_instance[i].tx_attributes =
697 ep_descriptor_ptrs[i - 1]->bmAttributes;
698
699 urb_link_init (&endpoint_instance[i].rcv);
700 urb_link_init (&endpoint_instance[i].rdy);
701 urb_link_init (&endpoint_instance[i].tx);
702 urb_link_init (&endpoint_instance[i].done);
703
704 if (endpoint_instance[i].endpoint_address & USB_DIR_IN)
705 endpoint_instance[i].tx_urb =
706 usbd_alloc_urb (device_instance,
707 &endpoint_instance[i]);
708 else
709 endpoint_instance[i].rcv_urb =
710 usbd_alloc_urb (device_instance,
711 &endpoint_instance[i]);
712 }
713 }
714
715 static void usbtty_init_endpoints (void)
716 {
717 int i;
718
719 bus_instance->max_endpoints = NUM_ENDPOINTS + 1;
720 for (i = 1; i <= NUM_ENDPOINTS; i++) {
721 udc_setup_ep (device_instance, i, &endpoint_instance[i]);
722 }
723 }
724
725 /* usbtty_init_terminal_type
726 *
727 * Do some late binding for our device type.
728 */
729 static void usbtty_init_terminal_type(short type)
730 {
731 switch(type){
732 /* CDC ACM */
733 case 0:
734 /* Assign endpoint descriptors */
735 ep_descriptor_ptrs[0] =
736 &acm_configuration_descriptors[0].notification_endpoint;
737 ep_descriptor_ptrs[1] =
738 &acm_configuration_descriptors[0].data_endpoints[0];
739 ep_descriptor_ptrs[2] =
740 &acm_configuration_descriptors[0].data_endpoints[1];
741
742 /* Enumerate Device Descriptor */
743 device_descriptor.bDeviceClass =
744 COMMUNICATIONS_DEVICE_CLASS;
745 device_descriptor.idProduct =
746 cpu_to_le16(CONFIG_USBD_PRODUCTID_CDCACM);
747
748 /* Assign endpoint indices */
749 tx_endpoint = ACM_TX_ENDPOINT;
750 rx_endpoint = ACM_RX_ENDPOINT;
751
752 /* Configuration Descriptor */
753 configuration_descriptor =
754 (struct usb_configuration_descriptor*)
755 &acm_configuration_descriptors;
756
757 /* Interface count */
758 interface_count = NUM_ACM_INTERFACES;
759 break;
760
761 /* BULK IN/OUT & Default */
762 case 1:
763 default:
764 /* Assign endpoint descriptors */
765 ep_descriptor_ptrs[0] =
766 &gserial_configuration_descriptors[0].data_endpoints[0];
767 ep_descriptor_ptrs[1] =
768 &gserial_configuration_descriptors[0].data_endpoints[1];
769 ep_descriptor_ptrs[2] =
770 &gserial_configuration_descriptors[0].data_endpoints[2];
771
772 /* Enumerate Device Descriptor */
773 device_descriptor.bDeviceClass = 0xFF;
774 device_descriptor.idProduct =
775 cpu_to_le16(CONFIG_USBD_PRODUCTID_GSERIAL);
776
777 /* Assign endpoint indices */
778 tx_endpoint = GSERIAL_TX_ENDPOINT;
779 rx_endpoint = GSERIAL_RX_ENDPOINT;
780
781 /* Configuration Descriptor */
782 configuration_descriptor =
783 (struct usb_configuration_descriptor*)
784 &gserial_configuration_descriptors;
785
786 /* Interface count */
787 interface_count = NUM_GSERIAL_INTERFACES;
788 break;
789 }
790 }
791
792 /******************************************************************************/
793
794 static struct urb *next_urb (struct usb_device_instance *device,
795 struct usb_endpoint_instance *endpoint)
796 {
797 struct urb *current_urb = NULL;
798 int space;
799
800 /* If there's a queue, then we should add to the last urb */
801 if (!endpoint->tx_queue) {
802 current_urb = endpoint->tx_urb;
803 } else {
804 /* Last urb from tx chain */
805 current_urb =
806 p2surround (struct urb, link, endpoint->tx.prev);
807 }
808
809 /* Make sure this one has enough room */
810 space = current_urb->buffer_length - current_urb->actual_length;
811 if (space > 0) {
812 return current_urb;
813 } else { /* No space here */
814 /* First look at done list */
815 current_urb = first_urb_detached (&endpoint->done);
816 if (!current_urb) {
817 current_urb = usbd_alloc_urb (device, endpoint);
818 }
819
820 urb_append (&endpoint->tx, current_urb);
821 endpoint->tx_queue++;
822 }
823 return current_urb;
824 }
825
826 static int write_buffer (circbuf_t * buf)
827 {
828 if (!usbtty_configured ()) {
829 return 0;
830 }
831
832 struct usb_endpoint_instance *endpoint =
833 &endpoint_instance[tx_endpoint];
834 struct urb *current_urb = NULL;
835
836 current_urb = next_urb (device_instance, endpoint);
837 /* TX data still exists - send it now
838 */
839 if(endpoint->sent < current_urb->actual_length){
840 if(udc_endpoint_write (endpoint)){
841 /* Write pre-empted by RX */
842 return -1;
843 }
844 }
845
846 if (buf->size) {
847 char *dest;
848
849 int space_avail;
850 int popnum, popped;
851 int total = 0;
852
853 /* Break buffer into urb sized pieces,
854 * and link each to the endpoint
855 */
856 while (buf->size > 0) {
857
858 if (!current_urb) {
859 TTYERR ("current_urb is NULL, buf->size %d\n",
860 buf->size);
861 return total;
862 }
863
864 dest = (char*)current_urb->buffer +
865 current_urb->actual_length;
866
867 space_avail =
868 current_urb->buffer_length -
869 current_urb->actual_length;
870 popnum = MIN (space_avail, buf->size);
871 if (popnum == 0)
872 break;
873
874 popped = buf_pop (buf, dest, popnum);
875 if (popped == 0)
876 break;
877 current_urb->actual_length += popped;
878 total += popped;
879
880 /* If endpoint->last == 0, then transfers have
881 * not started on this endpoint
882 */
883 if (endpoint->last == 0) {
884 if(udc_endpoint_write (endpoint)){
885 /* Write pre-empted by RX */
886 return -1;
887 }
888 }
889
890 }/* end while */
891 return total;
892 }
893
894 return 0;
895 }
896
897 static int fill_buffer (circbuf_t * buf)
898 {
899 struct usb_endpoint_instance *endpoint =
900 &endpoint_instance[rx_endpoint];
901
902 if (endpoint->rcv_urb && endpoint->rcv_urb->actual_length) {
903 unsigned int nb = 0;
904 char *src = (char *) endpoint->rcv_urb->buffer;
905 unsigned int rx_avail = buf->totalsize - buf->size;
906
907 if(rx_avail >= endpoint->rcv_urb->actual_length){
908
909 nb = endpoint->rcv_urb->actual_length;
910 buf_push (buf, src, nb);
911 endpoint->rcv_urb->actual_length = 0;
912
913 }
914 return nb;
915 }
916 return 0;
917 }
918
919 static int usbtty_configured (void)
920 {
921 return usbtty_configured_flag;
922 }
923
924 /******************************************************************************/
925
926 static void usbtty_event_handler (struct usb_device_instance *device,
927 usb_device_event_t event, int data)
928 {
929 switch (event) {
930 case DEVICE_RESET:
931 case DEVICE_BUS_INACTIVE:
932 usbtty_configured_flag = 0;
933 break;
934 case DEVICE_CONFIGURED:
935 usbtty_configured_flag = 1;
936 break;
937
938 case DEVICE_ADDRESS_ASSIGNED:
939 usbtty_init_endpoints ();
940
941 default:
942 break;
943 }
944 }
945
946 /******************************************************************************/
947
948 int usbtty_cdc_setup(struct usb_device_request *request, struct urb *urb)
949 {
950 switch (request->bRequest){
951
952 case ACM_SET_CONTROL_LINE_STATE: /* Implies DTE ready */
953 break;
954 case ACM_SEND_ENCAPSULATED_COMMAND : /* Required */
955 break;
956 case ACM_SET_LINE_ENCODING : /* DTE stop/parity bits
957 * per character */
958 break;
959 case ACM_GET_ENCAPSULATED_RESPONSE : /* request response */
960 break;
961 case ACM_GET_LINE_ENCODING : /* request DTE rate,
962 * stop/parity bits */
963 memcpy (urb->buffer , &rs232_desc, sizeof(rs232_desc));
964 urb->actual_length = sizeof(rs232_desc);
965
966 break;
967 default:
968 return 1;
969 }
970 return 0;
971 }
972
973 /******************************************************************************/
974
975 /*
976 * Since interrupt handling has not yet been implemented, we use this function
977 * to handle polling. This is called by the tstc,getc,putc,puts routines to
978 * update the USB state.
979 */
980 void usbtty_poll (void)
981 {
982 /* New interrupts? */
983 udc_irq();
984
985 /* Write any output data to host buffer
986 * (do this before checking interrupts to avoid missing one)
987 */
988 if (usbtty_configured ()) {
989 write_buffer (&usbtty_output);
990 }
991
992 /* New interrupts? */
993 udc_irq();
994
995 /* Check for new data from host..
996 * (do this after checking interrupts to get latest data)
997 */
998 if (usbtty_configured ()) {
999 fill_buffer (&usbtty_input);
1000 }
1001
1002 /* New interrupts? */
1003 udc_irq();
1004
1005 }
"Das U-Boot" Source Tree