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10#include <common.h>
11#include <config.h>
12#include <circbuf.h>
13#include <env.h>
14#include <serial.h>
15#include <stdio_dev.h>
16#include <asm/unaligned.h>
17#include "usbtty.h"
18#include "usb_cdc_acm.h"
19#include "usbdescriptors.h"
20
21#ifdef DEBUG
22#define TTYDBG(fmt,args...)\
23 serial_printf("[%s] %s %d: "fmt, __FILE__,__FUNCTION__,__LINE__,##args)
24#else
25#define TTYDBG(fmt,args...) do{}while(0)
26#endif
27
28#if 1
29#define TTYERR(fmt,args...)\
30 serial_printf("ERROR![%s] %s %d: "fmt, __FILE__,__FUNCTION__,\
31 __LINE__,##args)
32#else
33#define TTYERR(fmt,args...) do{}while(0)
34#endif
35
36
37
38
39#define NUM_CONFIGS 1
40#define MAX_INTERFACES 2
41#define NUM_ENDPOINTS 3
42#define ACM_TX_ENDPOINT 3
43#define ACM_RX_ENDPOINT 2
44#define GSERIAL_TX_ENDPOINT 2
45#define GSERIAL_RX_ENDPOINT 1
46#define NUM_ACM_INTERFACES 2
47#define NUM_GSERIAL_INTERFACES 1
48#define CONFIG_USBD_DATA_INTERFACE_STR "Bulk Data Interface"
49#define CONFIG_USBD_CTRL_INTERFACE_STR "Control Interface"
50
51
52
53
54#define USBTTY_BUFFER_SIZE 2048
55static circbuf_t usbtty_input;
56static circbuf_t usbtty_output;
57
58
59
60
61
62static struct stdio_dev usbttydev;
63static struct usb_device_instance device_instance[1];
64static struct usb_bus_instance bus_instance[1];
65static struct usb_configuration_instance config_instance[NUM_CONFIGS];
66static struct usb_interface_instance interface_instance[MAX_INTERFACES];
67static struct usb_alternate_instance alternate_instance[MAX_INTERFACES];
68
69static struct usb_endpoint_instance endpoint_instance[NUM_ENDPOINTS+1];
70
71
72
73
74int usbtty_configured_flag = 0;
75
76
77
78
79static char serial_number[16];
80
81
82
83
84
85
86
87extern struct usb_string_descriptor **usb_strings;
88
89
90static unsigned short rx_endpoint = 0;
91static unsigned short tx_endpoint = 0;
92static unsigned short interface_count = 0;
93static struct usb_string_descriptor *usbtty_string_table[STR_COUNT];
94
95
96static u8 wstrLang[4] = {4,USB_DT_STRING,0x9,0x4};
97static u8 wstrManufacturer[2 + 2*(sizeof(CONFIG_USBD_MANUFACTURER)-1)];
98static u8 wstrProduct[2 + 2*(sizeof(CONFIG_USBD_PRODUCT_NAME)-1)];
99static u8 wstrSerial[2 + 2*(sizeof(serial_number) - 1)];
100static u8 wstrConfiguration[2 + 2*(sizeof(CONFIG_USBD_CONFIGURATION_STR)-1)];
101static u8 wstrDataInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
102static u8 wstrCtrlInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
103
104
105static struct usb_interface_descriptor interface_descriptors[MAX_INTERFACES];
106static struct usb_endpoint_descriptor *ep_descriptor_ptrs[NUM_ENDPOINTS];
107static struct usb_configuration_descriptor *configuration_descriptor = 0;
108static struct usb_device_descriptor device_descriptor = {
109 .bLength = sizeof(struct usb_device_descriptor),
110 .bDescriptorType = USB_DT_DEVICE,
111 .bcdUSB = cpu_to_le16(USB_BCD_VERSION),
112 .bDeviceSubClass = 0x00,
113 .bDeviceProtocol = 0x00,
114 .bMaxPacketSize0 = EP0_MAX_PACKET_SIZE,
115 .idVendor = cpu_to_le16(CONFIG_USBD_VENDORID),
116 .bcdDevice = cpu_to_le16(USBTTY_BCD_DEVICE),
117 .iManufacturer = STR_MANUFACTURER,
118 .iProduct = STR_PRODUCT,
119 .iSerialNumber = STR_SERIAL,
120 .bNumConfigurations = NUM_CONFIGS
121};
122
123
124#if defined(CONFIG_USBD_HS)
125static struct usb_qualifier_descriptor qualifier_descriptor = {
126 .bLength = sizeof(struct usb_qualifier_descriptor),
127 .bDescriptorType = USB_DT_QUAL,
128 .bcdUSB = cpu_to_le16(USB_BCD_VERSION),
129 .bDeviceClass = COMMUNICATIONS_DEVICE_CLASS,
130 .bDeviceSubClass = 0x00,
131 .bDeviceProtocol = 0x00,
132 .bMaxPacketSize0 = EP0_MAX_PACKET_SIZE,
133 .bNumConfigurations = NUM_CONFIGS
134};
135#endif
136
137
138
139
140
141struct acm_config_desc {
142 struct usb_configuration_descriptor configuration_desc;
143
144
145 struct usb_interface_descriptor interface_desc;
146
147 struct usb_class_header_function_descriptor usb_class_header;
148 struct usb_class_call_management_descriptor usb_class_call_mgt;
149 struct usb_class_abstract_control_descriptor usb_class_acm;
150 struct usb_class_union_function_descriptor usb_class_union;
151 struct usb_endpoint_descriptor notification_endpoint;
152
153
154 struct usb_interface_descriptor data_class_interface;
155 struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS-1];
156} __attribute__((packed));
157
158static struct acm_config_desc acm_configuration_descriptors[NUM_CONFIGS] = {
159 {
160 .configuration_desc ={
161 .bLength =
162 sizeof(struct usb_configuration_descriptor),
163 .bDescriptorType = USB_DT_CONFIG,
164 .wTotalLength =
165 cpu_to_le16(sizeof(struct acm_config_desc)),
166 .bNumInterfaces = NUM_ACM_INTERFACES,
167 .bConfigurationValue = 1,
168 .iConfiguration = STR_CONFIG,
169 .bmAttributes =
170 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
171 .bMaxPower = USBTTY_MAXPOWER
172 },
173
174 .interface_desc = {
175 .bLength = sizeof(struct usb_interface_descriptor),
176 .bDescriptorType = USB_DT_INTERFACE,
177 .bInterfaceNumber = 0,
178 .bAlternateSetting = 0,
179 .bNumEndpoints = 0x01,
180 .bInterfaceClass =
181 COMMUNICATIONS_INTERFACE_CLASS_CONTROL,
182 .bInterfaceSubClass = COMMUNICATIONS_ACM_SUBCLASS,
183 .bInterfaceProtocol = COMMUNICATIONS_V25TER_PROTOCOL,
184 .iInterface = STR_CTRL_INTERFACE,
185 },
186 .usb_class_header = {
187 .bFunctionLength =
188 sizeof(struct usb_class_header_function_descriptor),
189 .bDescriptorType = CS_INTERFACE,
190 .bDescriptorSubtype = USB_ST_HEADER,
191 .bcdCDC = cpu_to_le16(110),
192 },
193 .usb_class_call_mgt = {
194 .bFunctionLength =
195 sizeof(struct usb_class_call_management_descriptor),
196 .bDescriptorType = CS_INTERFACE,
197 .bDescriptorSubtype = USB_ST_CMF,
198 .bmCapabilities = 0x00,
199 .bDataInterface = 0x01,
200 },
201 .usb_class_acm = {
202 .bFunctionLength =
203 sizeof(struct usb_class_abstract_control_descriptor),
204 .bDescriptorType = CS_INTERFACE,
205 .bDescriptorSubtype = USB_ST_ACMF,
206 .bmCapabilities = 0x00,
207 },
208 .usb_class_union = {
209 .bFunctionLength =
210 sizeof(struct usb_class_union_function_descriptor),
211 .bDescriptorType = CS_INTERFACE,
212 .bDescriptorSubtype = USB_ST_UF,
213 .bMasterInterface = 0x00,
214 .bSlaveInterface0 = 0x01,
215 },
216 .notification_endpoint = {
217 .bLength =
218 sizeof(struct usb_endpoint_descriptor),
219 .bDescriptorType = USB_DT_ENDPOINT,
220 .bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
221 .bmAttributes = USB_ENDPOINT_XFER_INT,
222 .wMaxPacketSize
223 = cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
224 .bInterval = 0xFF,
225 },
226
227
228 .data_class_interface = {
229 .bLength =
230 sizeof(struct usb_interface_descriptor),
231 .bDescriptorType = USB_DT_INTERFACE,
232 .bInterfaceNumber = 0x01,
233 .bAlternateSetting = 0x00,
234 .bNumEndpoints = 0x02,
235 .bInterfaceClass =
236 COMMUNICATIONS_INTERFACE_CLASS_DATA,
237 .bInterfaceSubClass = DATA_INTERFACE_SUBCLASS_NONE,
238 .bInterfaceProtocol = DATA_INTERFACE_PROTOCOL_NONE,
239 .iInterface = STR_DATA_INTERFACE,
240 },
241 .data_endpoints = {
242 {
243 .bLength =
244 sizeof(struct usb_endpoint_descriptor),
245 .bDescriptorType = USB_DT_ENDPOINT,
246 .bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
247 .bmAttributes =
248 USB_ENDPOINT_XFER_BULK,
249 .wMaxPacketSize =
250 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
251 .bInterval = 0xFF,
252 },
253 {
254 .bLength =
255 sizeof(struct usb_endpoint_descriptor),
256 .bDescriptorType = USB_DT_ENDPOINT,
257 .bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
258 .bmAttributes =
259 USB_ENDPOINT_XFER_BULK,
260 .wMaxPacketSize =
261 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
262 .bInterval = 0xFF,
263 },
264 },
265 },
266};
267
268static struct rs232_emu rs232_desc={
269 .dter = 115200,
270 .stop_bits = 0x00,
271 .parity = 0x00,
272 .data_bits = 0x08
273};
274
275
276
277
278
279
280
281struct gserial_config_desc {
282
283 struct usb_configuration_descriptor configuration_desc;
284 struct usb_interface_descriptor interface_desc[NUM_GSERIAL_INTERFACES];
285 struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS];
286
287} __attribute__((packed));
288
289static struct gserial_config_desc
290gserial_configuration_descriptors[NUM_CONFIGS] ={
291 {
292 .configuration_desc ={
293 .bLength = sizeof(struct usb_configuration_descriptor),
294 .bDescriptorType = USB_DT_CONFIG,
295 .wTotalLength =
296 cpu_to_le16(sizeof(struct gserial_config_desc)),
297 .bNumInterfaces = NUM_GSERIAL_INTERFACES,
298 .bConfigurationValue = 1,
299 .iConfiguration = STR_CONFIG,
300 .bmAttributes =
301 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
302 .bMaxPower = USBTTY_MAXPOWER
303 },
304 .interface_desc = {
305 {
306 .bLength =
307 sizeof(struct usb_interface_descriptor),
308 .bDescriptorType = USB_DT_INTERFACE,
309 .bInterfaceNumber = 0,
310 .bAlternateSetting = 0,
311 .bNumEndpoints = NUM_ENDPOINTS,
312 .bInterfaceClass =
313 COMMUNICATIONS_INTERFACE_CLASS_VENDOR,
314 .bInterfaceSubClass =
315 COMMUNICATIONS_NO_SUBCLASS,
316 .bInterfaceProtocol =
317 COMMUNICATIONS_NO_PROTOCOL,
318 .iInterface = STR_DATA_INTERFACE
319 },
320 },
321 .data_endpoints = {
322 {
323 .bLength =
324 sizeof(struct usb_endpoint_descriptor),
325 .bDescriptorType = USB_DT_ENDPOINT,
326 .bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
327 .bmAttributes = USB_ENDPOINT_XFER_BULK,
328 .wMaxPacketSize =
329 cpu_to_le16(CONFIG_USBD_SERIAL_OUT_PKTSIZE),
330 .bInterval= 0xFF,
331 },
332 {
333 .bLength =
334 sizeof(struct usb_endpoint_descriptor),
335 .bDescriptorType = USB_DT_ENDPOINT,
336 .bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
337 .bmAttributes = USB_ENDPOINT_XFER_BULK,
338 .wMaxPacketSize =
339 cpu_to_le16(CONFIG_USBD_SERIAL_IN_PKTSIZE),
340 .bInterval = 0xFF,
341 },
342 {
343 .bLength =
344 sizeof(struct usb_endpoint_descriptor),
345 .bDescriptorType = USB_DT_ENDPOINT,
346 .bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
347 .bmAttributes = USB_ENDPOINT_XFER_INT,
348 .wMaxPacketSize =
349 cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
350 .bInterval = 0xFF,
351 },
352 },
353 },
354};
355
356
357
358
359
360static void usbtty_init_strings (void);
361static void usbtty_init_instances (void);
362static void usbtty_init_endpoints (void);
363static void usbtty_init_terminal_type(short type);
364static void usbtty_event_handler (struct usb_device_instance *device,
365 usb_device_event_t event, int data);
366static int usbtty_cdc_setup(struct usb_device_request *request,
367 struct urb *urb);
368static int usbtty_configured (void);
369static int write_buffer (circbuf_t * buf);
370static int fill_buffer (circbuf_t * buf);
371
372void usbtty_poll (void);
373
374
375static void str2wide (char *str, u16 * wide)
376{
377 int i;
378 for (i = 0; i < strlen (str) && str[i]; i++){
379 #if defined(__LITTLE_ENDIAN)
380 wide[i] = (u16) str[i];
381 #elif defined(__BIG_ENDIAN)
382 wide[i] = ((u16)(str[i])<<8);
383 #else
384 #error "__LITTLE_ENDIAN or __BIG_ENDIAN undefined"
385 #endif
386 }
387}
388
389
390
391
392
393int usbtty_tstc(struct stdio_dev *dev)
394{
395 struct usb_endpoint_instance *endpoint =
396 &endpoint_instance[rx_endpoint];
397
398
399 if(usbtty_input.size <= 0){
400 udc_unset_nak(endpoint->endpoint_address&0x03);
401 }
402
403 usbtty_poll ();
404 return (usbtty_input.size > 0);
405}
406
407
408
409
410
411
412
413int usbtty_getc(struct stdio_dev *dev)
414{
415 char c;
416 struct usb_endpoint_instance *endpoint =
417 &endpoint_instance[rx_endpoint];
418
419 while (usbtty_input.size <= 0) {
420 udc_unset_nak(endpoint->endpoint_address&0x03);
421 usbtty_poll ();
422 }
423
424 buf_pop (&usbtty_input, &c, 1);
425 udc_set_nak(endpoint->endpoint_address&0x03);
426
427 return c;
428}
429
430
431
432
433void usbtty_putc(struct stdio_dev *dev, const char c)
434{
435 if (!usbtty_configured ())
436 return;
437
438
439 if (c == '\n')
440 buf_push (&usbtty_output, "\r", 1);
441
442 buf_push(&usbtty_output, &c, 1);
443
444
445 if ((usbtty_output.size + 2) >= usbtty_output.totalsize) {
446 usbtty_poll ();
447 }
448}
449
450
451static int next_nl_pos (const char *s)
452{
453 int i;
454
455 for (i = 0; s[i] != '\0'; i++) {
456 if (s[i] == '\n')
457 return i;
458 }
459 return i;
460}
461
462
463
464
465
466static void __usbtty_puts (const char *str, int len)
467{
468 int maxlen = usbtty_output.totalsize;
469 int space, n;
470
471
472 while (len > 0) {
473 usbtty_poll ();
474
475 space = maxlen - usbtty_output.size;
476
477 if (space) {
478 write_buffer (&usbtty_output);
479
480 n = min(space, min(len, maxlen));
481 buf_push (&usbtty_output, str, n);
482
483 str += n;
484 len -= n;
485 }
486 }
487}
488
489void usbtty_puts(struct stdio_dev *dev, const char *str)
490{
491 int n;
492 int len;
493
494 if (!usbtty_configured ())
495 return;
496
497 len = strlen (str);
498
499 while (len > 0) {
500 n = next_nl_pos (str);
501
502 if (str[n] == '\n') {
503 __usbtty_puts(str, n);
504 __usbtty_puts("\r\n", 2);
505 str += (n + 1);
506 len -= (n + 1);
507 } else {
508
509 __usbtty_puts (str, n);
510 break;
511 }
512 }
513
514
515 usbtty_poll ();
516}
517
518
519
520
521
522int drv_usbtty_init (void)
523{
524 int rc;
525 char * sn;
526 char * tt;
527 int snlen;
528
529
530 sn = env_get("serial#");
531 if (!sn)
532 sn = "000000000000";
533 snlen = strlen(sn);
534 if (snlen > sizeof(serial_number) - 1) {
535 printf ("Warning: serial number %s is too long (%d > %lu)\n",
536 sn, snlen, (ulong)(sizeof(serial_number) - 1));
537 snlen = sizeof(serial_number) - 1;
538 }
539 memcpy (serial_number, sn, snlen);
540 serial_number[snlen] = '\0';
541
542
543
544 tt = env_get("usbtty");
545 if (!tt)
546 tt = "generic";
547 usbtty_init_terminal_type(strcmp(tt,"cdc_acm"));
548
549
550 buf_init (&usbtty_input, USBTTY_BUFFER_SIZE);
551 buf_init (&usbtty_output, USBTTY_BUFFER_SIZE);
552
553
554 udc_init ();
555
556 usbtty_init_strings ();
557 usbtty_init_instances ();
558
559 usbtty_init_endpoints ();
560
561 udc_startup_events (device_instance);
562 udc_connect ();
563
564
565 memset (&usbttydev, 0, sizeof (usbttydev));
566
567 strcpy (usbttydev.name, "usbtty");
568 usbttydev.ext = 0;
569 usbttydev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_OUTPUT;
570 usbttydev.tstc = usbtty_tstc;
571 usbttydev.getc = usbtty_getc;
572 usbttydev.putc = usbtty_putc;
573 usbttydev.puts = usbtty_puts;
574
575 rc = stdio_register (&usbttydev);
576
577 return (rc == 0) ? 1 : rc;
578}
579
580static void usbtty_init_strings (void)
581{
582 struct usb_string_descriptor *string;
583
584 usbtty_string_table[STR_LANG] =
585 (struct usb_string_descriptor*)wstrLang;
586
587 string = (struct usb_string_descriptor *) wstrManufacturer;
588 string->bLength = sizeof(wstrManufacturer);
589 string->bDescriptorType = USB_DT_STRING;
590 str2wide (CONFIG_USBD_MANUFACTURER, string->wData);
591 usbtty_string_table[STR_MANUFACTURER]=string;
592
593
594 string = (struct usb_string_descriptor *) wstrProduct;
595 string->bLength = sizeof(wstrProduct);
596 string->bDescriptorType = USB_DT_STRING;
597 str2wide (CONFIG_USBD_PRODUCT_NAME, string->wData);
598 usbtty_string_table[STR_PRODUCT]=string;
599
600
601 string = (struct usb_string_descriptor *) wstrSerial;
602 string->bLength = sizeof(serial_number);
603 string->bDescriptorType = USB_DT_STRING;
604 str2wide (serial_number, string->wData);
605 usbtty_string_table[STR_SERIAL]=string;
606
607
608 string = (struct usb_string_descriptor *) wstrConfiguration;
609 string->bLength = sizeof(wstrConfiguration);
610 string->bDescriptorType = USB_DT_STRING;
611 str2wide (CONFIG_USBD_CONFIGURATION_STR, string->wData);
612 usbtty_string_table[STR_CONFIG]=string;
613
614
615 string = (struct usb_string_descriptor *) wstrDataInterface;
616 string->bLength = sizeof(wstrDataInterface);
617 string->bDescriptorType = USB_DT_STRING;
618 str2wide (CONFIG_USBD_DATA_INTERFACE_STR, string->wData);
619 usbtty_string_table[STR_DATA_INTERFACE]=string;
620
621 string = (struct usb_string_descriptor *) wstrCtrlInterface;
622 string->bLength = sizeof(wstrCtrlInterface);
623 string->bDescriptorType = USB_DT_STRING;
624 str2wide (CONFIG_USBD_CTRL_INTERFACE_STR, string->wData);
625 usbtty_string_table[STR_CTRL_INTERFACE]=string;
626
627
628 usb_strings = usbtty_string_table;
629}
630
631#define init_wMaxPacketSize(x) le16_to_cpu(get_unaligned(\
632 &ep_descriptor_ptrs[(x) - 1]->wMaxPacketSize));
633
634static void usbtty_init_instances (void)
635{
636 int i;
637
638
639 memset (device_instance, 0, sizeof (struct usb_device_instance));
640 device_instance->device_state = STATE_INIT;
641 device_instance->device_descriptor = &device_descriptor;
642#if defined(CONFIG_USBD_HS)
643 device_instance->qualifier_descriptor = &qualifier_descriptor;
644#endif
645 device_instance->event = usbtty_event_handler;
646 device_instance->cdc_recv_setup = usbtty_cdc_setup;
647 device_instance->bus = bus_instance;
648 device_instance->configurations = NUM_CONFIGS;
649 device_instance->configuration_instance_array = config_instance;
650
651
652 memset (bus_instance, 0, sizeof (struct usb_bus_instance));
653 bus_instance->device = device_instance;
654 bus_instance->endpoint_array = endpoint_instance;
655 bus_instance->max_endpoints = 1;
656 bus_instance->maxpacketsize = 64;
657 bus_instance->serial_number_str = serial_number;
658
659
660 memset (config_instance, 0,
661 sizeof (struct usb_configuration_instance));
662 config_instance->interfaces = interface_count;
663 config_instance->configuration_descriptor = configuration_descriptor;
664 config_instance->interface_instance_array = interface_instance;
665
666
667 memset (interface_instance, 0,
668 sizeof (struct usb_interface_instance));
669 interface_instance->alternates = 1;
670 interface_instance->alternates_instance_array = alternate_instance;
671
672
673 memset (alternate_instance, 0,
674 sizeof (struct usb_alternate_instance));
675 alternate_instance->interface_descriptor = interface_descriptors;
676 alternate_instance->endpoints = NUM_ENDPOINTS;
677 alternate_instance->endpoints_descriptor_array = ep_descriptor_ptrs;
678
679
680 memset (&endpoint_instance[0], 0,
681 sizeof (struct usb_endpoint_instance));
682 endpoint_instance[0].endpoint_address = 0;
683 endpoint_instance[0].rcv_packetSize = EP0_MAX_PACKET_SIZE;
684 endpoint_instance[0].rcv_attributes = USB_ENDPOINT_XFER_CONTROL;
685 endpoint_instance[0].tx_packetSize = EP0_MAX_PACKET_SIZE;
686 endpoint_instance[0].tx_attributes = USB_ENDPOINT_XFER_CONTROL;
687 udc_setup_ep (device_instance, 0, &endpoint_instance[0]);
688
689 for (i = 1; i <= NUM_ENDPOINTS; i++) {
690 memset (&endpoint_instance[i], 0,
691 sizeof (struct usb_endpoint_instance));
692
693 endpoint_instance[i].endpoint_address =
694 ep_descriptor_ptrs[i - 1]->bEndpointAddress;
695
696 endpoint_instance[i].rcv_attributes =
697 ep_descriptor_ptrs[i - 1]->bmAttributes;
698
699 endpoint_instance[i].rcv_packetSize = init_wMaxPacketSize(i);
700
701 endpoint_instance[i].tx_attributes =
702 ep_descriptor_ptrs[i - 1]->bmAttributes;
703
704 endpoint_instance[i].tx_packetSize = init_wMaxPacketSize(i);
705
706 endpoint_instance[i].tx_attributes =
707 ep_descriptor_ptrs[i - 1]->bmAttributes;
708
709 urb_link_init (&endpoint_instance[i].rcv);
710 urb_link_init (&endpoint_instance[i].rdy);
711 urb_link_init (&endpoint_instance[i].tx);
712 urb_link_init (&endpoint_instance[i].done);
713
714 if (endpoint_instance[i].endpoint_address & USB_DIR_IN)
715 endpoint_instance[i].tx_urb =
716 usbd_alloc_urb (device_instance,
717 &endpoint_instance[i]);
718 else
719 endpoint_instance[i].rcv_urb =
720 usbd_alloc_urb (device_instance,
721 &endpoint_instance[i]);
722 }
723}
724
725static void usbtty_init_endpoints (void)
726{
727 int i;
728
729 bus_instance->max_endpoints = NUM_ENDPOINTS + 1;
730 for (i = 1; i <= NUM_ENDPOINTS; i++) {
731 udc_setup_ep (device_instance, i, &endpoint_instance[i]);
732 }
733}
734
735
736
737
738
739static void usbtty_init_terminal_type(short type)
740{
741 switch(type){
742
743 case 0:
744
745 ep_descriptor_ptrs[0] =
746 &acm_configuration_descriptors[0].notification_endpoint;
747 ep_descriptor_ptrs[1] =
748 &acm_configuration_descriptors[0].data_endpoints[0];
749 ep_descriptor_ptrs[2] =
750 &acm_configuration_descriptors[0].data_endpoints[1];
751
752
753 device_descriptor.bDeviceClass =
754 COMMUNICATIONS_DEVICE_CLASS;
755 device_descriptor.idProduct =
756 cpu_to_le16(CONFIG_USBD_PRODUCTID_CDCACM);
757
758#if defined(CONFIG_USBD_HS)
759 qualifier_descriptor.bDeviceClass =
760 COMMUNICATIONS_DEVICE_CLASS;
761#endif
762
763 tx_endpoint = ACM_TX_ENDPOINT;
764 rx_endpoint = ACM_RX_ENDPOINT;
765
766
767 configuration_descriptor =
768 (struct usb_configuration_descriptor*)
769 &acm_configuration_descriptors;
770
771
772 interface_count = NUM_ACM_INTERFACES;
773 break;
774
775
776 case 1:
777 default:
778
779 ep_descriptor_ptrs[0] =
780 &gserial_configuration_descriptors[0].data_endpoints[0];
781 ep_descriptor_ptrs[1] =
782 &gserial_configuration_descriptors[0].data_endpoints[1];
783 ep_descriptor_ptrs[2] =
784 &gserial_configuration_descriptors[0].data_endpoints[2];
785
786
787 device_descriptor.bDeviceClass = 0xFF;
788 device_descriptor.idProduct =
789 cpu_to_le16(CONFIG_USBD_PRODUCTID_GSERIAL);
790#if defined(CONFIG_USBD_HS)
791 qualifier_descriptor.bDeviceClass = 0xFF;
792#endif
793
794 tx_endpoint = GSERIAL_TX_ENDPOINT;
795 rx_endpoint = GSERIAL_RX_ENDPOINT;
796
797
798 configuration_descriptor =
799 (struct usb_configuration_descriptor*)
800 &gserial_configuration_descriptors;
801
802
803 interface_count = NUM_GSERIAL_INTERFACES;
804 break;
805 }
806}
807
808
809
810static struct urb *next_urb (struct usb_device_instance *device,
811 struct usb_endpoint_instance *endpoint)
812{
813 struct urb *current_urb = NULL;
814 int space;
815
816
817 if (!endpoint->tx_queue) {
818 current_urb = endpoint->tx_urb;
819 } else {
820
821 current_urb =
822 p2surround (struct urb, link, endpoint->tx.prev);
823 }
824
825
826 space = current_urb->buffer_length - current_urb->actual_length;
827 if (space > 0) {
828 return current_urb;
829 } else {
830
831 current_urb = first_urb_detached (&endpoint->done);
832 if (!current_urb) {
833 current_urb = usbd_alloc_urb (device, endpoint);
834 }
835
836 urb_append (&endpoint->tx, current_urb);
837 endpoint->tx_queue++;
838 }
839 return current_urb;
840}
841
842static int write_buffer (circbuf_t * buf)
843{
844 if (!usbtty_configured ()) {
845 return 0;
846 }
847
848 struct usb_endpoint_instance *endpoint =
849 &endpoint_instance[tx_endpoint];
850 struct urb *current_urb = NULL;
851
852
853
854 if(endpoint->sent < endpoint->tx_urb->actual_length){
855 if(udc_endpoint_write (endpoint)){
856
857 return -1;
858 }
859 }
860
861 if (buf->size) {
862 char *dest;
863
864 int space_avail;
865 int popnum, popped;
866 int total = 0;
867
868
869
870
871 while (buf->size > 0) {
872
873 current_urb = next_urb (device_instance, endpoint);
874
875 dest = (char*)current_urb->buffer +
876 current_urb->actual_length;
877
878 space_avail =
879 current_urb->buffer_length -
880 current_urb->actual_length;
881 popnum = min(space_avail, (int)buf->size);
882 if (popnum == 0)
883 break;
884
885 popped = buf_pop (buf, dest, popnum);
886 if (popped == 0)
887 break;
888 current_urb->actual_length += popped;
889 total += popped;
890
891
892
893
894 if (endpoint->last == 0) {
895 if(udc_endpoint_write (endpoint)){
896
897 return -1;
898 }
899 }
900
901 }
902 return total;
903 }
904
905 return 0;
906}
907
908static int fill_buffer (circbuf_t * buf)
909{
910 struct usb_endpoint_instance *endpoint =
911 &endpoint_instance[rx_endpoint];
912
913 if (endpoint->rcv_urb && endpoint->rcv_urb->actual_length) {
914 unsigned int nb = 0;
915 char *src = (char *) endpoint->rcv_urb->buffer;
916 unsigned int rx_avail = buf->totalsize - buf->size;
917
918 if(rx_avail >= endpoint->rcv_urb->actual_length){
919
920 nb = endpoint->rcv_urb->actual_length;
921 buf_push (buf, src, nb);
922 endpoint->rcv_urb->actual_length = 0;
923
924 }
925 return nb;
926 }
927 return 0;
928}
929
930static int usbtty_configured (void)
931{
932 return usbtty_configured_flag;
933}
934
935
936
937static void usbtty_event_handler (struct usb_device_instance *device,
938 usb_device_event_t event, int data)
939{
940#if defined(CONFIG_USBD_HS)
941 int i;
942#endif
943 switch (event) {
944 case DEVICE_RESET:
945 case DEVICE_BUS_INACTIVE:
946 usbtty_configured_flag = 0;
947 break;
948 case DEVICE_CONFIGURED:
949 usbtty_configured_flag = 1;
950 break;
951
952 case DEVICE_ADDRESS_ASSIGNED:
953#if defined(CONFIG_USBD_HS)
954
955
956
957
958
959
960 for (i = 0; i < NUM_ENDPOINTS; i++) {
961 if (((ep_descriptor_ptrs[i]->bmAttributes &
962 USB_ENDPOINT_XFERTYPE_MASK) ==
963 USB_ENDPOINT_XFER_BULK)
964 && is_usbd_high_speed()) {
965
966 ep_descriptor_ptrs[i]->wMaxPacketSize =
967 CONFIG_USBD_SERIAL_BULK_HS_PKTSIZE;
968 }
969
970 endpoint_instance[i + 1].tx_packetSize =
971 ep_descriptor_ptrs[i]->wMaxPacketSize;
972 endpoint_instance[i + 1].rcv_packetSize =
973 ep_descriptor_ptrs[i]->wMaxPacketSize;
974 }
975#endif
976 usbtty_init_endpoints ();
977
978 default:
979 break;
980 }
981}
982
983
984
985int usbtty_cdc_setup(struct usb_device_request *request, struct urb *urb)
986{
987 switch (request->bRequest){
988
989 case ACM_SET_CONTROL_LINE_STATE:
990 break;
991 case ACM_SEND_ENCAPSULATED_COMMAND :
992 break;
993 case ACM_SET_LINE_ENCODING :
994
995 break;
996 case ACM_GET_ENCAPSULATED_RESPONSE :
997 break;
998 case ACM_GET_LINE_ENCODING :
999
1000 memcpy (urb->buffer , &rs232_desc, sizeof(rs232_desc));
1001 urb->actual_length = sizeof(rs232_desc);
1002
1003 break;
1004 default:
1005 return 1;
1006 }
1007 return 0;
1008}
1009
1010
1011
1012
1013
1014
1015
1016
1017void usbtty_poll (void)
1018{
1019
1020 udc_irq();
1021
1022
1023
1024
1025 if (usbtty_configured ()) {
1026 write_buffer (&usbtty_output);
1027 }
1028
1029
1030 udc_irq();
1031
1032
1033
1034
1035 if (usbtty_configured ()) {
1036 fill_buffer (&usbtty_input);
1037 }
1038
1039
1040 udc_irq();
1041
1042}
1043
