1
2
3
4
5
6
7
8
9
10#include <common.h>
11#include <config.h>
12#include <circbuf.h>
13#include <stdio_dev.h>
14#include <asm/unaligned.h>
15#include "usbtty.h"
16#include "usb_cdc_acm.h"
17#include "usbdescriptors.h"
18
19#ifdef DEBUG
20#define TTYDBG(fmt,args...)\
21 serial_printf("[%s] %s %d: "fmt, __FILE__,__FUNCTION__,__LINE__,##args)
22#else
23#define TTYDBG(fmt,args...) do{}while(0)
24#endif
25
26#if 1
27#define TTYERR(fmt,args...)\
28 serial_printf("ERROR![%s] %s %d: "fmt, __FILE__,__FUNCTION__,\
29 __LINE__,##args)
30#else
31#define TTYERR(fmt,args...) do{}while(0)
32#endif
33
34
35
36
37#define NUM_CONFIGS 1
38#define MAX_INTERFACES 2
39#define NUM_ENDPOINTS 3
40#define ACM_TX_ENDPOINT 3
41#define ACM_RX_ENDPOINT 2
42#define GSERIAL_TX_ENDPOINT 2
43#define GSERIAL_RX_ENDPOINT 1
44#define NUM_ACM_INTERFACES 2
45#define NUM_GSERIAL_INTERFACES 1
46#define CONFIG_USBD_DATA_INTERFACE_STR "Bulk Data Interface"
47#define CONFIG_USBD_CTRL_INTERFACE_STR "Control Interface"
48
49
50
51
52#define USBTTY_BUFFER_SIZE 2048
53static circbuf_t usbtty_input;
54static circbuf_t usbtty_output;
55
56
57
58
59
60static struct stdio_dev usbttydev;
61static struct usb_device_instance device_instance[1];
62static struct usb_bus_instance bus_instance[1];
63static struct usb_configuration_instance config_instance[NUM_CONFIGS];
64static struct usb_interface_instance interface_instance[MAX_INTERFACES];
65static struct usb_alternate_instance alternate_instance[MAX_INTERFACES];
66
67static struct usb_endpoint_instance endpoint_instance[NUM_ENDPOINTS+1];
68
69
70
71
72int usbtty_configured_flag = 0;
73
74
75
76
77static char serial_number[16];
78
79
80
81
82
83
84
85extern struct usb_string_descriptor **usb_strings;
86
87
88static unsigned short rx_endpoint = 0;
89static unsigned short tx_endpoint = 0;
90static unsigned short interface_count = 0;
91static struct usb_string_descriptor *usbtty_string_table[STR_COUNT];
92
93
94static u8 wstrLang[4] = {4,USB_DT_STRING,0x9,0x4};
95static u8 wstrManufacturer[2 + 2*(sizeof(CONFIG_USBD_MANUFACTURER)-1)];
96static u8 wstrProduct[2 + 2*(sizeof(CONFIG_USBD_PRODUCT_NAME)-1)];
97static u8 wstrSerial[2 + 2*(sizeof(serial_number) - 1)];
98static u8 wstrConfiguration[2 + 2*(sizeof(CONFIG_USBD_CONFIGURATION_STR)-1)];
99static u8 wstrDataInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
100static u8 wstrCtrlInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
101
102
103static struct usb_interface_descriptor interface_descriptors[MAX_INTERFACES];
104static struct usb_endpoint_descriptor *ep_descriptor_ptrs[NUM_ENDPOINTS];
105static struct usb_configuration_descriptor *configuration_descriptor = 0;
106static struct usb_device_descriptor device_descriptor = {
107 .bLength = sizeof(struct usb_device_descriptor),
108 .bDescriptorType = USB_DT_DEVICE,
109 .bcdUSB = cpu_to_le16(USB_BCD_VERSION),
110 .bDeviceSubClass = 0x00,
111 .bDeviceProtocol = 0x00,
112 .bMaxPacketSize0 = EP0_MAX_PACKET_SIZE,
113 .idVendor = cpu_to_le16(CONFIG_USBD_VENDORID),
114 .bcdDevice = cpu_to_le16(USBTTY_BCD_DEVICE),
115 .iManufacturer = STR_MANUFACTURER,
116 .iProduct = STR_PRODUCT,
117 .iSerialNumber = STR_SERIAL,
118 .bNumConfigurations = NUM_CONFIGS
119};
120
121
122#if defined(CONFIG_USBD_HS)
123static struct usb_qualifier_descriptor qualifier_descriptor = {
124 .bLength = sizeof(struct usb_qualifier_descriptor),
125 .bDescriptorType = USB_DT_QUAL,
126 .bcdUSB = cpu_to_le16(USB_BCD_VERSION),
127 .bDeviceClass = COMMUNICATIONS_DEVICE_CLASS,
128 .bDeviceSubClass = 0x00,
129 .bDeviceProtocol = 0x00,
130 .bMaxPacketSize0 = EP0_MAX_PACKET_SIZE,
131 .bNumConfigurations = NUM_CONFIGS
132};
133#endif
134
135
136
137
138
139struct acm_config_desc {
140 struct usb_configuration_descriptor configuration_desc;
141
142
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
152 struct usb_interface_descriptor data_class_interface;
153 struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS-1];
154} __attribute__((packed));
155
156static struct acm_config_desc acm_configuration_descriptors[NUM_CONFIGS] = {
157 {
158 .configuration_desc ={
159 .bLength =
160 sizeof(struct usb_configuration_descriptor),
161 .bDescriptorType = USB_DT_CONFIG,
162 .wTotalLength =
163 cpu_to_le16(sizeof(struct acm_config_desc)),
164 .bNumInterfaces = NUM_ACM_INTERFACES,
165 .bConfigurationValue = 1,
166 .iConfiguration = STR_CONFIG,
167 .bmAttributes =
168 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
169 .bMaxPower = USBTTY_MAXPOWER
170 },
171
172 .interface_desc = {
173 .bLength = sizeof(struct usb_interface_descriptor),
174 .bDescriptorType = USB_DT_INTERFACE,
175 .bInterfaceNumber = 0,
176 .bAlternateSetting = 0,
177 .bNumEndpoints = 0x01,
178 .bInterfaceClass =
179 COMMUNICATIONS_INTERFACE_CLASS_CONTROL,
180 .bInterfaceSubClass = COMMUNICATIONS_ACM_SUBCLASS,
181 .bInterfaceProtocol = COMMUNICATIONS_V25TER_PROTOCOL,
182 .iInterface = STR_CTRL_INTERFACE,
183 },
184 .usb_class_header = {
185 .bFunctionLength =
186 sizeof(struct usb_class_header_function_descriptor),
187 .bDescriptorType = CS_INTERFACE,
188 .bDescriptorSubtype = USB_ST_HEADER,
189 .bcdCDC = cpu_to_le16(110),
190 },
191 .usb_class_call_mgt = {
192 .bFunctionLength =
193 sizeof(struct usb_class_call_management_descriptor),
194 .bDescriptorType = CS_INTERFACE,
195 .bDescriptorSubtype = USB_ST_CMF,
196 .bmCapabilities = 0x00,
197 .bDataInterface = 0x01,
198 },
199 .usb_class_acm = {
200 .bFunctionLength =
201 sizeof(struct usb_class_abstract_control_descriptor),
202 .bDescriptorType = CS_INTERFACE,
203 .bDescriptorSubtype = USB_ST_ACMF,
204 .bmCapabilities = 0x00,
205 },
206 .usb_class_union = {
207 .bFunctionLength =
208 sizeof(struct usb_class_union_function_descriptor),
209 .bDescriptorType = CS_INTERFACE,
210 .bDescriptorSubtype = USB_ST_UF,
211 .bMasterInterface = 0x00,
212 .bSlaveInterface0 = 0x01,
213 },
214 .notification_endpoint = {
215 .bLength =
216 sizeof(struct usb_endpoint_descriptor),
217 .bDescriptorType = USB_DT_ENDPOINT,
218 .bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
219 .bmAttributes = USB_ENDPOINT_XFER_INT,
220 .wMaxPacketSize
221 = cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
222 .bInterval = 0xFF,
223 },
224
225
226 .data_class_interface = {
227 .bLength =
228 sizeof(struct usb_interface_descriptor),
229 .bDescriptorType = USB_DT_INTERFACE,
230 .bInterfaceNumber = 0x01,
231 .bAlternateSetting = 0x00,
232 .bNumEndpoints = 0x02,
233 .bInterfaceClass =
234 COMMUNICATIONS_INTERFACE_CLASS_DATA,
235 .bInterfaceSubClass = DATA_INTERFACE_SUBCLASS_NONE,
236 .bInterfaceProtocol = DATA_INTERFACE_PROTOCOL_NONE,
237 .iInterface = STR_DATA_INTERFACE,
238 },
239 .data_endpoints = {
240 {
241 .bLength =
242 sizeof(struct usb_endpoint_descriptor),
243 .bDescriptorType = USB_DT_ENDPOINT,
244 .bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
245 .bmAttributes =
246 USB_ENDPOINT_XFER_BULK,
247 .wMaxPacketSize =
248 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
249 .bInterval = 0xFF,
250 },
251 {
252 .bLength =
253 sizeof(struct usb_endpoint_descriptor),
254 .bDescriptorType = USB_DT_ENDPOINT,
255 .bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
256 .bmAttributes =
257 USB_ENDPOINT_XFER_BULK,
258 .wMaxPacketSize =
259 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
260 .bInterval = 0xFF,
261 },
262 },
263 },
264};
265
266static struct rs232_emu rs232_desc={
267 .dter = 115200,
268 .stop_bits = 0x00,
269 .parity = 0x00,
270 .data_bits = 0x08
271};
272
273
274
275
276
277
278
279struct gserial_config_desc {
280
281 struct usb_configuration_descriptor configuration_desc;
282 struct usb_interface_descriptor interface_desc[NUM_GSERIAL_INTERFACES];
283 struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS];
284
285} __attribute__((packed));
286
287static struct gserial_config_desc
288gserial_configuration_descriptors[NUM_CONFIGS] ={
289 {
290 .configuration_desc ={
291 .bLength = sizeof(struct usb_configuration_descriptor),
292 .bDescriptorType = USB_DT_CONFIG,
293 .wTotalLength =
294 cpu_to_le16(sizeof(struct gserial_config_desc)),
295 .bNumInterfaces = NUM_GSERIAL_INTERFACES,
296 .bConfigurationValue = 1,
297 .iConfiguration = STR_CONFIG,
298 .bmAttributes =
299 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
300 .bMaxPower = USBTTY_MAXPOWER
301 },
302 .interface_desc = {
303 {
304 .bLength =
305 sizeof(struct usb_interface_descriptor),
306 .bDescriptorType = USB_DT_INTERFACE,
307 .bInterfaceNumber = 0,
308 .bAlternateSetting = 0,
309 .bNumEndpoints = NUM_ENDPOINTS,
310 .bInterfaceClass =
311 COMMUNICATIONS_INTERFACE_CLASS_VENDOR,
312 .bInterfaceSubClass =
313 COMMUNICATIONS_NO_SUBCLASS,
314 .bInterfaceProtocol =
315 COMMUNICATIONS_NO_PROTOCOL,
316 .iInterface = STR_DATA_INTERFACE
317 },
318 },
319 .data_endpoints = {
320 {
321 .bLength =
322 sizeof(struct usb_endpoint_descriptor),
323 .bDescriptorType = USB_DT_ENDPOINT,
324 .bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
325 .bmAttributes = USB_ENDPOINT_XFER_BULK,
326 .wMaxPacketSize =
327 cpu_to_le16(CONFIG_USBD_SERIAL_OUT_PKTSIZE),
328 .bInterval= 0xFF,
329 },
330 {
331 .bLength =
332 sizeof(struct usb_endpoint_descriptor),
333 .bDescriptorType = USB_DT_ENDPOINT,
334 .bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
335 .bmAttributes = USB_ENDPOINT_XFER_BULK,
336 .wMaxPacketSize =
337 cpu_to_le16(CONFIG_USBD_SERIAL_IN_PKTSIZE),
338 .bInterval = 0xFF,
339 },
340 {
341 .bLength =
342 sizeof(struct usb_endpoint_descriptor),
343 .bDescriptorType = USB_DT_ENDPOINT,
344 .bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
345 .bmAttributes = USB_ENDPOINT_XFER_INT,
346 .wMaxPacketSize =
347 cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
348 .bInterval = 0xFF,
349 },
350 },
351 },
352};
353
354
355
356
357
358static void usbtty_init_strings (void);
359static void usbtty_init_instances (void);
360static void usbtty_init_endpoints (void);
361static void usbtty_init_terminal_type(short type);
362static void usbtty_event_handler (struct usb_device_instance *device,
363 usb_device_event_t event, int data);
364static int usbtty_cdc_setup(struct usb_device_request *request,
365 struct urb *urb);
366static int usbtty_configured (void);
367static int write_buffer (circbuf_t * buf);
368static int fill_buffer (circbuf_t * buf);
369
370void usbtty_poll (void);
371
372
373static void str2wide (char *str, u16 * wide)
374{
375 int i;
376 for (i = 0; i < strlen (str) && str[i]; i++){
377 #if defined(__LITTLE_ENDIAN)
378 wide[i] = (u16) str[i];
379 #elif defined(__BIG_ENDIAN)
380 wide[i] = ((u16)(str[i])<<8);
381 #else
382 #error "__LITTLE_ENDIAN or __BIG_ENDIAN undefined"
383 #endif
384 }
385}
386
387
388
389
390
391int usbtty_tstc(struct stdio_dev *dev)
392{
393 struct usb_endpoint_instance *endpoint =
394 &endpoint_instance[rx_endpoint];
395
396
397 if(usbtty_input.size <= 0){
398 udc_unset_nak(endpoint->endpoint_address&0x03);
399 }
400
401 usbtty_poll ();
402 return (usbtty_input.size > 0);
403}
404
405
406
407
408
409
410
411int usbtty_getc(struct stdio_dev *dev)
412{
413 char c;
414 struct usb_endpoint_instance *endpoint =
415 &endpoint_instance[rx_endpoint];
416
417 while (usbtty_input.size <= 0) {
418 udc_unset_nak(endpoint->endpoint_address&0x03);
419 usbtty_poll ();
420 }
421
422 buf_pop (&usbtty_input, &c, 1);
423 udc_set_nak(endpoint->endpoint_address&0x03);
424
425 return c;
426}
427
428
429
430
431void usbtty_putc(struct stdio_dev *dev, const char c)
432{
433 if (!usbtty_configured ())
434 return;
435
436
437 if (c == '\n')
438 buf_push (&usbtty_output, "\r", 1);
439
440 buf_push(&usbtty_output, &c, 1);
441
442
443 if ((usbtty_output.size + 2) >= usbtty_output.totalsize) {
444 usbtty_poll ();
445 }
446}
447
448
449static int next_nl_pos (const char *s)
450{
451 int i;
452
453 for (i = 0; s[i] != '\0'; i++) {
454 if (s[i] == '\n')
455 return i;
456 }
457 return i;
458}
459
460
461
462
463
464static void __usbtty_puts (const char *str, int len)
465{
466 int maxlen = usbtty_output.totalsize;
467 int space, n;
468
469
470 while (len > 0) {
471 usbtty_poll ();
472
473 space = maxlen - usbtty_output.size;
474
475 if (space) {
476 write_buffer (&usbtty_output);
477
478 n = min(space, min(len, maxlen));
479 buf_push (&usbtty_output, str, n);
480
481 str += n;
482 len -= n;
483 }
484 }
485}
486
487void usbtty_puts(struct stdio_dev *dev, const char *str)
488{
489 int n;
490 int len;
491
492 if (!usbtty_configured ())
493 return;
494
495 len = strlen (str);
496
497 while (len > 0) {
498 n = next_nl_pos (str);
499
500 if (str[n] == '\n') {
501 __usbtty_puts("\r", 1);
502 __usbtty_puts(str, n + 1);
503 str += (n + 1);
504 len -= (n + 1);
505 } else {
506
507 __usbtty_puts (str, n);
508 break;
509 }
510 }
511
512
513 usbtty_poll ();
514}
515
516
517
518
519
520int drv_usbtty_init (void)
521{
522 int rc;
523 char * sn;
524 char * tt;
525 int snlen;
526
527
528 sn = env_get("serial#");
529 if (!sn)
530 sn = "000000000000";
531 snlen = strlen(sn);
532 if (snlen > sizeof(serial_number) - 1) {
533 printf ("Warning: serial number %s is too long (%d > %lu)\n",
534 sn, snlen, (ulong)(sizeof(serial_number) - 1));
535 snlen = sizeof(serial_number) - 1;
536 }
537 memcpy (serial_number, sn, snlen);
538 serial_number[snlen] = '\0';
539
540
541
542 tt = env_get("usbtty");
543 if (!tt)
544 tt = "generic";
545 usbtty_init_terminal_type(strcmp(tt,"cdc_acm"));
546
547
548 buf_init (&usbtty_input, USBTTY_BUFFER_SIZE);
549 buf_init (&usbtty_output, USBTTY_BUFFER_SIZE);
550
551
552 udc_init ();
553
554 usbtty_init_strings ();
555 usbtty_init_instances ();
556
557 usbtty_init_endpoints ();
558
559 udc_startup_events (device_instance);
560 udc_connect ();
561
562
563 memset (&usbttydev, 0, sizeof (usbttydev));
564
565 strcpy (usbttydev.name, "usbtty");
566 usbttydev.ext = 0;
567 usbttydev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_OUTPUT;
568 usbttydev.tstc = usbtty_tstc;
569 usbttydev.getc = usbtty_getc;
570 usbttydev.putc = usbtty_putc;
571 usbttydev.puts = usbtty_puts;
572
573 rc = stdio_register (&usbttydev);
574
575 return (rc == 0) ? 1 : rc;
576}
577
578static void usbtty_init_strings (void)
579{
580 struct usb_string_descriptor *string;
581
582 usbtty_string_table[STR_LANG] =
583 (struct usb_string_descriptor*)wstrLang;
584
585 string = (struct usb_string_descriptor *) wstrManufacturer;
586 string->bLength = sizeof(wstrManufacturer);
587 string->bDescriptorType = USB_DT_STRING;
588 str2wide (CONFIG_USBD_MANUFACTURER, string->wData);
589 usbtty_string_table[STR_MANUFACTURER]=string;
590
591
592 string = (struct usb_string_descriptor *) wstrProduct;
593 string->bLength = sizeof(wstrProduct);
594 string->bDescriptorType = USB_DT_STRING;
595 str2wide (CONFIG_USBD_PRODUCT_NAME, string->wData);
596 usbtty_string_table[STR_PRODUCT]=string;
597
598
599 string = (struct usb_string_descriptor *) wstrSerial;
600 string->bLength = sizeof(serial_number);
601 string->bDescriptorType = USB_DT_STRING;
602 str2wide (serial_number, string->wData);
603 usbtty_string_table[STR_SERIAL]=string;
604
605
606 string = (struct usb_string_descriptor *) wstrConfiguration;
607 string->bLength = sizeof(wstrConfiguration);
608 string->bDescriptorType = USB_DT_STRING;
609 str2wide (CONFIG_USBD_CONFIGURATION_STR, string->wData);
610 usbtty_string_table[STR_CONFIG]=string;
611
612
613 string = (struct usb_string_descriptor *) wstrDataInterface;
614 string->bLength = sizeof(wstrDataInterface);
615 string->bDescriptorType = USB_DT_STRING;
616 str2wide (CONFIG_USBD_DATA_INTERFACE_STR, string->wData);
617 usbtty_string_table[STR_DATA_INTERFACE]=string;
618
619 string = (struct usb_string_descriptor *) wstrCtrlInterface;
620 string->bLength = sizeof(wstrCtrlInterface);
621 string->bDescriptorType = USB_DT_STRING;
622 str2wide (CONFIG_USBD_CTRL_INTERFACE_STR, string->wData);
623 usbtty_string_table[STR_CTRL_INTERFACE]=string;
624
625
626 usb_strings = usbtty_string_table;
627}
628
629#define init_wMaxPacketSize(x) le16_to_cpu(get_unaligned(\
630 &ep_descriptor_ptrs[(x) - 1]->wMaxPacketSize));
631
632static void usbtty_init_instances (void)
633{
634 int i;
635
636
637 memset (device_instance, 0, sizeof (struct usb_device_instance));
638 device_instance->device_state = STATE_INIT;
639 device_instance->device_descriptor = &device_descriptor;
640#if defined(CONFIG_USBD_HS)
641 device_instance->qualifier_descriptor = &qualifier_descriptor;
642#endif
643 device_instance->event = usbtty_event_handler;
644 device_instance->cdc_recv_setup = usbtty_cdc_setup;
645 device_instance->bus = bus_instance;
646 device_instance->configurations = NUM_CONFIGS;
647 device_instance->configuration_instance_array = config_instance;
648
649
650 memset (bus_instance, 0, sizeof (struct usb_bus_instance));
651 bus_instance->device = device_instance;
652 bus_instance->endpoint_array = endpoint_instance;
653 bus_instance->max_endpoints = 1;
654 bus_instance->maxpacketsize = 64;
655 bus_instance->serial_number_str = serial_number;
656
657
658 memset (config_instance, 0,
659 sizeof (struct usb_configuration_instance));
660 config_instance->interfaces = interface_count;
661 config_instance->configuration_descriptor = configuration_descriptor;
662 config_instance->interface_instance_array = interface_instance;
663
664
665 memset (interface_instance, 0,
666 sizeof (struct usb_interface_instance));
667 interface_instance->alternates = 1;
668 interface_instance->alternates_instance_array = alternate_instance;
669
670
671 memset (alternate_instance, 0,
672 sizeof (struct usb_alternate_instance));
673 alternate_instance->interface_descriptor = interface_descriptors;
674 alternate_instance->endpoints = NUM_ENDPOINTS;
675 alternate_instance->endpoints_descriptor_array = ep_descriptor_ptrs;
676
677
678 memset (&endpoint_instance[0], 0,
679 sizeof (struct usb_endpoint_instance));
680 endpoint_instance[0].endpoint_address = 0;
681 endpoint_instance[0].rcv_packetSize = EP0_MAX_PACKET_SIZE;
682 endpoint_instance[0].rcv_attributes = USB_ENDPOINT_XFER_CONTROL;
683 endpoint_instance[0].tx_packetSize = EP0_MAX_PACKET_SIZE;
684 endpoint_instance[0].tx_attributes = USB_ENDPOINT_XFER_CONTROL;
685 udc_setup_ep (device_instance, 0, &endpoint_instance[0]);
686
687 for (i = 1; i <= NUM_ENDPOINTS; i++) {
688 memset (&endpoint_instance[i], 0,
689 sizeof (struct usb_endpoint_instance));
690
691 endpoint_instance[i].endpoint_address =
692 ep_descriptor_ptrs[i - 1]->bEndpointAddress;
693
694 endpoint_instance[i].rcv_attributes =
695 ep_descriptor_ptrs[i - 1]->bmAttributes;
696
697 endpoint_instance[i].rcv_packetSize = init_wMaxPacketSize(i);
698
699 endpoint_instance[i].tx_attributes =
700 ep_descriptor_ptrs[i - 1]->bmAttributes;
701
702 endpoint_instance[i].tx_packetSize = init_wMaxPacketSize(i);
703
704 endpoint_instance[i].tx_attributes =
705 ep_descriptor_ptrs[i - 1]->bmAttributes;
706
707 urb_link_init (&endpoint_instance[i].rcv);
708 urb_link_init (&endpoint_instance[i].rdy);
709 urb_link_init (&endpoint_instance[i].tx);
710 urb_link_init (&endpoint_instance[i].done);
711
712 if (endpoint_instance[i].endpoint_address & USB_DIR_IN)
713 endpoint_instance[i].tx_urb =
714 usbd_alloc_urb (device_instance,
715 &endpoint_instance[i]);
716 else
717 endpoint_instance[i].rcv_urb =
718 usbd_alloc_urb (device_instance,
719 &endpoint_instance[i]);
720 }
721}
722
723static void usbtty_init_endpoints (void)
724{
725 int i;
726
727 bus_instance->max_endpoints = NUM_ENDPOINTS + 1;
728 for (i = 1; i <= NUM_ENDPOINTS; i++) {
729 udc_setup_ep (device_instance, i, &endpoint_instance[i]);
730 }
731}
732
733
734
735
736
737static void usbtty_init_terminal_type(short type)
738{
739 switch(type){
740
741 case 0:
742
743 ep_descriptor_ptrs[0] =
744 &acm_configuration_descriptors[0].notification_endpoint;
745 ep_descriptor_ptrs[1] =
746 &acm_configuration_descriptors[0].data_endpoints[0];
747 ep_descriptor_ptrs[2] =
748 &acm_configuration_descriptors[0].data_endpoints[1];
749
750
751 device_descriptor.bDeviceClass =
752 COMMUNICATIONS_DEVICE_CLASS;
753 device_descriptor.idProduct =
754 cpu_to_le16(CONFIG_USBD_PRODUCTID_CDCACM);
755
756#if defined(CONFIG_USBD_HS)
757 qualifier_descriptor.bDeviceClass =
758 COMMUNICATIONS_DEVICE_CLASS;
759#endif
760
761 tx_endpoint = ACM_TX_ENDPOINT;
762 rx_endpoint = ACM_RX_ENDPOINT;
763
764
765 configuration_descriptor =
766 (struct usb_configuration_descriptor*)
767 &acm_configuration_descriptors;
768
769
770 interface_count = NUM_ACM_INTERFACES;
771 break;
772
773
774 case 1:
775 default:
776
777 ep_descriptor_ptrs[0] =
778 &gserial_configuration_descriptors[0].data_endpoints[0];
779 ep_descriptor_ptrs[1] =
780 &gserial_configuration_descriptors[0].data_endpoints[1];
781 ep_descriptor_ptrs[2] =
782 &gserial_configuration_descriptors[0].data_endpoints[2];
783
784
785 device_descriptor.bDeviceClass = 0xFF;
786 device_descriptor.idProduct =
787 cpu_to_le16(CONFIG_USBD_PRODUCTID_GSERIAL);
788#if defined(CONFIG_USBD_HS)
789 qualifier_descriptor.bDeviceClass = 0xFF;
790#endif
791
792 tx_endpoint = GSERIAL_TX_ENDPOINT;
793 rx_endpoint = GSERIAL_RX_ENDPOINT;
794
795
796 configuration_descriptor =
797 (struct usb_configuration_descriptor*)
798 &gserial_configuration_descriptors;
799
800
801 interface_count = NUM_GSERIAL_INTERFACES;
802 break;
803 }
804}
805
806
807
808static struct urb *next_urb (struct usb_device_instance *device,
809 struct usb_endpoint_instance *endpoint)
810{
811 struct urb *current_urb = NULL;
812 int space;
813
814
815 if (!endpoint->tx_queue) {
816 current_urb = endpoint->tx_urb;
817 } else {
818
819 current_urb =
820 p2surround (struct urb, link, endpoint->tx.prev);
821 }
822
823
824 space = current_urb->buffer_length - current_urb->actual_length;
825 if (space > 0) {
826 return current_urb;
827 } else {
828
829 current_urb = first_urb_detached (&endpoint->done);
830 if (!current_urb) {
831 current_urb = usbd_alloc_urb (device, endpoint);
832 }
833
834 urb_append (&endpoint->tx, current_urb);
835 endpoint->tx_queue++;
836 }
837 return current_urb;
838}
839
840static int write_buffer (circbuf_t * buf)
841{
842 if (!usbtty_configured ()) {
843 return 0;
844 }
845
846 struct usb_endpoint_instance *endpoint =
847 &endpoint_instance[tx_endpoint];
848 struct urb *current_urb = NULL;
849
850 current_urb = next_urb (device_instance, endpoint);
851
852 if (!current_urb) {
853 TTYERR ("current_urb is NULL, buf->size %d\n",
854 buf->size);
855 return 0;
856 }
857
858
859
860 if(endpoint->sent < current_urb->actual_length){
861 if(udc_endpoint_write (endpoint)){
862
863 return -1;
864 }
865 }
866
867 if (buf->size) {
868 char *dest;
869
870 int space_avail;
871 int popnum, popped;
872 int total = 0;
873
874
875
876
877 while (buf->size > 0) {
878
879 dest = (char*)current_urb->buffer +
880 current_urb->actual_length;
881
882 space_avail =
883 current_urb->buffer_length -
884 current_urb->actual_length;
885 popnum = min(space_avail, (int)buf->size);
886 if (popnum == 0)
887 break;
888
889 popped = buf_pop (buf, dest, popnum);
890 if (popped == 0)
891 break;
892 current_urb->actual_length += popped;
893 total += popped;
894
895
896
897
898 if (endpoint->last == 0) {
899 if(udc_endpoint_write (endpoint)){
900
901 return -1;
902 }
903 }
904
905 }
906 return total;
907 }
908
909 return 0;
910}
911
912static int fill_buffer (circbuf_t * buf)
913{
914 struct usb_endpoint_instance *endpoint =
915 &endpoint_instance[rx_endpoint];
916
917 if (endpoint->rcv_urb && endpoint->rcv_urb->actual_length) {
918 unsigned int nb = 0;
919 char *src = (char *) endpoint->rcv_urb->buffer;
920 unsigned int rx_avail = buf->totalsize - buf->size;
921
922 if(rx_avail >= endpoint->rcv_urb->actual_length){
923
924 nb = endpoint->rcv_urb->actual_length;
925 buf_push (buf, src, nb);
926 endpoint->rcv_urb->actual_length = 0;
927
928 }
929 return nb;
930 }
931 return 0;
932}
933
934static int usbtty_configured (void)
935{
936 return usbtty_configured_flag;
937}
938
939
940
941static void usbtty_event_handler (struct usb_device_instance *device,
942 usb_device_event_t event, int data)
943{
944#if defined(CONFIG_USBD_HS)
945 int i;
946#endif
947 switch (event) {
948 case DEVICE_RESET:
949 case DEVICE_BUS_INACTIVE:
950 usbtty_configured_flag = 0;
951 break;
952 case DEVICE_CONFIGURED:
953 usbtty_configured_flag = 1;
954 break;
955
956 case DEVICE_ADDRESS_ASSIGNED:
957#if defined(CONFIG_USBD_HS)
958
959
960
961
962
963
964 for (i = 0; i < NUM_ENDPOINTS; i++) {
965 if (((ep_descriptor_ptrs[i]->bmAttributes &
966 USB_ENDPOINT_XFERTYPE_MASK) ==
967 USB_ENDPOINT_XFER_BULK)
968 && is_usbd_high_speed()) {
969
970 ep_descriptor_ptrs[i]->wMaxPacketSize =
971 CONFIG_USBD_SERIAL_BULK_HS_PKTSIZE;
972 }
973
974 endpoint_instance[i + 1].tx_packetSize =
975 ep_descriptor_ptrs[i]->wMaxPacketSize;
976 endpoint_instance[i + 1].rcv_packetSize =
977 ep_descriptor_ptrs[i]->wMaxPacketSize;
978 }
979#endif
980 usbtty_init_endpoints ();
981
982 default:
983 break;
984 }
985}
986
987
988
989int usbtty_cdc_setup(struct usb_device_request *request, struct urb *urb)
990{
991 switch (request->bRequest){
992
993 case ACM_SET_CONTROL_LINE_STATE:
994 break;
995 case ACM_SEND_ENCAPSULATED_COMMAND :
996 break;
997 case ACM_SET_LINE_ENCODING :
998
999 break;
1000 case ACM_GET_ENCAPSULATED_RESPONSE :
1001 break;
1002 case ACM_GET_LINE_ENCODING :
1003
1004 memcpy (urb->buffer , &rs232_desc, sizeof(rs232_desc));
1005 urb->actual_length = sizeof(rs232_desc);
1006
1007 break;
1008 default:
1009 return 1;
1010 }
1011 return 0;
1012}
1013
1014
1015
1016
1017
1018
1019
1020
1021void usbtty_poll (void)
1022{
1023
1024 udc_irq();
1025
1026
1027
1028
1029 if (usbtty_configured ()) {
1030 write_buffer (&usbtty_output);
1031 }
1032
1033
1034 udc_irq();
1035
1036
1037
1038
1039 if (usbtty_configured ()) {
1040 fill_buffer (&usbtty_input);
1041 }
1042
1043
1044 udc_irq();
1045
1046}
1047
