]> git.ipfire.org Git - people/ms/u-boot.git/blame - drivers/usbtty.c
Files include/linux/byteorder/{big,little}_endian.h define
[people/ms/u-boot.git] / drivers / usbtty.c
CommitLineData
232c150a
WD
1/*
2 * (C) Copyright 2003
3 * Gerry Hamel, geh@ti.com, Texas Instruments
386eda02 4 *
16c8d5e7
WD
5 * (C) Copyright 2006
6 * Bryan O'Donoghue, bodonoghue@codehermit.ie
232c150a
WD
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
26#ifdef CONFIG_USB_TTY
27
28#include <circbuf.h>
29#include <devices.h>
30#include "usbtty.h"
16c8d5e7
WD
31#include "usb_cdc_acm.h"
32#include "usbdescriptors.h"
33#include <config.h> /* If defined, override Linux identifiers with
386eda02 34 * vendor specific ones */
232c150a
WD
35
36#if 0
16c8d5e7
WD
37#define TTYDBG(fmt,args...)\
38 serial_printf("[%s] %s %d: "fmt, __FILE__,__FUNCTION__,__LINE__,##args)
232c150a
WD
39#else
40#define TTYDBG(fmt,args...) do{}while(0)
41#endif
42
16c8d5e7
WD
43#if 1
44#define TTYERR(fmt,args...)\
45 serial_printf("ERROR![%s] %s %d: "fmt, __FILE__,__FUNCTION__,\
46 __LINE__,##args)
232c150a
WD
47#else
48#define TTYERR(fmt,args...) do{}while(0)
49#endif
50
16c8d5e7
WD
51/*
52 * Defines
53 */
54#define NUM_CONFIGS 1
55#define MAX_INTERFACES 2
56#define NUM_ENDPOINTS 3
57#define ACM_TX_ENDPOINT 3
58#define ACM_RX_ENDPOINT 2
59#define GSERIAL_TX_ENDPOINT 2
60#define GSERIAL_RX_ENDPOINT 1
61#define NUM_ACM_INTERFACES 2
62#define NUM_GSERIAL_INTERFACES 1
63#define CONFIG_USBD_DATA_INTERFACE_STR "Bulk Data Interface"
64#define CONFIG_USBD_CTRL_INTERFACE_STR "Control Interface"
65
232c150a
WD
66/*
67 * Buffers to hold input and output data
68 */
69#define USBTTY_BUFFER_SIZE 256
70static circbuf_t usbtty_input;
71static circbuf_t usbtty_output;
72
73
74/*
75 * Instance variables
76 */
77static device_t usbttydev;
16c8d5e7
WD
78static struct usb_device_instance device_instance[1];
79static struct usb_bus_instance bus_instance[1];
232c150a 80static struct usb_configuration_instance config_instance[NUM_CONFIGS];
16c8d5e7
WD
81static struct usb_interface_instance interface_instance[MAX_INTERFACES];
82static struct usb_alternate_instance alternate_instance[MAX_INTERFACES];
83/* one extra for control endpoint */
84static struct usb_endpoint_instance endpoint_instance[NUM_ENDPOINTS+1];
232c150a
WD
85
86/*
87 * Global flag
88 */
89int usbtty_configured_flag = 0;
90
6629d2f2
WD
91/*
92 * Serial number
93 */
94static char serial_number[16];
95
16c8d5e7 96
232c150a 97/*
16c8d5e7 98 * Descriptors, Strings, Local variables.
232c150a 99 */
16c8d5e7
WD
100
101/* defined and used by usbdcore_ep0.c */
102extern struct usb_string_descriptor **usb_strings;
103
104/* Indicies, References */
105static unsigned short rx_endpoint = 0;
106static unsigned short tx_endpoint = 0;
107static unsigned short interface_count = 0;
108static struct usb_string_descriptor *usbtty_string_table[STR_COUNT];
109
110/* USB Descriptor Strings */
232c150a
WD
111static u8 wstrLang[4] = {4,USB_DT_STRING,0x9,0x4};
112static u8 wstrManufacturer[2 + 2*(sizeof(CONFIG_USBD_MANUFACTURER)-1)];
113static u8 wstrProduct[2 + 2*(sizeof(CONFIG_USBD_PRODUCT_NAME)-1)];
6629d2f2 114static u8 wstrSerial[2 + 2*(sizeof(serial_number) - 1)];
232c150a 115static u8 wstrConfiguration[2 + 2*(sizeof(CONFIG_USBD_CONFIGURATION_STR)-1)];
16c8d5e7
WD
116static u8 wstrDataInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
117static u8 wstrCtrlInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
232c150a 118
16c8d5e7
WD
119/* Standard USB Data Structures */
120static struct usb_interface_descriptor interface_descriptors[MAX_INTERFACES];
121static struct usb_endpoint_descriptor *ep_descriptor_ptrs[NUM_ENDPOINTS];
122static struct usb_configuration_descriptor *configuration_descriptor = 0;
232c150a 123static struct usb_device_descriptor device_descriptor = {
16c8d5e7
WD
124 .bLength = sizeof(struct usb_device_descriptor),
125 .bDescriptorType = USB_DT_DEVICE,
126 .bcdUSB = cpu_to_le16(USB_BCD_VERSION),
127 .bDeviceSubClass = 0x00,
128 .bDeviceProtocol = 0x00,
129 .bMaxPacketSize0 = EP0_MAX_PACKET_SIZE,
130 .idVendor = cpu_to_le16(CONFIG_USBD_VENDORID),
131 .bcdDevice = cpu_to_le16(USBTTY_BCD_DEVICE),
132 .iManufacturer = STR_MANUFACTURER,
133 .iProduct = STR_PRODUCT,
134 .iSerialNumber = STR_SERIAL,
135 .bNumConfigurations = NUM_CONFIGS
232c150a 136};
16c8d5e7
WD
137
138
139/*
140 * Static CDC ACM specific descriptors
141 */
142
143struct acm_config_desc {
144 struct usb_configuration_descriptor configuration_desc;
386eda02 145
16c8d5e7
WD
146 /* Master Interface */
147 struct usb_interface_descriptor interface_desc;
386eda02 148
16c8d5e7
WD
149 struct usb_class_header_function_descriptor usb_class_header;
150 struct usb_class_call_management_descriptor usb_class_call_mgt;
151 struct usb_class_abstract_control_descriptor usb_class_acm;
152 struct usb_class_union_function_descriptor usb_class_union;
153 struct usb_endpoint_descriptor notification_endpoint;
154
155 /* Slave Interface */
156 struct usb_interface_descriptor data_class_interface;
386eda02 157 struct usb_endpoint_descriptor
16c8d5e7
WD
158 data_endpoints[NUM_ENDPOINTS-1] __attribute__((packed));
159} __attribute__((packed));
160
161static struct acm_config_desc acm_configuration_descriptors[NUM_CONFIGS] = {
162 {
163 .configuration_desc ={
386eda02 164 .bLength =
16c8d5e7
WD
165 sizeof(struct usb_configuration_descriptor),
166 .bDescriptorType = USB_DT_CONFIG,
386eda02 167 .wTotalLength =
16c8d5e7
WD
168 cpu_to_le16(sizeof(struct acm_config_desc)),
169 .bNumInterfaces = NUM_ACM_INTERFACES,
170 .bConfigurationValue = 1,
171 .iConfiguration = STR_CONFIG,
386eda02 172 .bmAttributes =
16c8d5e7
WD
173 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
174 .bMaxPower = USBTTY_MAXPOWER
175 },
176 /* Interface 1 */
177 .interface_desc = {
178 .bLength = sizeof(struct usb_interface_descriptor),
179 .bDescriptorType = USB_DT_INTERFACE,
180 .bInterfaceNumber = 0,
181 .bAlternateSetting = 0,
182 .bNumEndpoints = 0x01,
386eda02 183 .bInterfaceClass =
16c8d5e7
WD
184 COMMUNICATIONS_INTERFACE_CLASS_CONTROL,
185 .bInterfaceSubClass = COMMUNICATIONS_ACM_SUBCLASS,
186 .bInterfaceProtocol = COMMUNICATIONS_V25TER_PROTOCOL,
187 .iInterface = STR_CTRL_INTERFACE,
188 },
189 .usb_class_header = {
386eda02 190 .bFunctionLength =
16c8d5e7 191 sizeof(struct usb_class_header_function_descriptor),
386eda02 192 .bDescriptorType = CS_INTERFACE,
16c8d5e7
WD
193 .bDescriptorSubtype = USB_ST_HEADER,
194 .bcdCDC = cpu_to_le16(110),
195 },
196 .usb_class_call_mgt = {
386eda02 197 .bFunctionLength =
16c8d5e7
WD
198 sizeof(struct usb_class_call_management_descriptor),
199 .bDescriptorType = CS_INTERFACE,
200 .bDescriptorSubtype = USB_ST_CMF,
386eda02
WD
201 .bmCapabilities = 0x00,
202 .bDataInterface = 0x01,
16c8d5e7
WD
203 },
204 .usb_class_acm = {
386eda02 205 .bFunctionLength =
16c8d5e7
WD
206 sizeof(struct usb_class_abstract_control_descriptor),
207 .bDescriptorType = CS_INTERFACE,
386eda02
WD
208 .bDescriptorSubtype = USB_ST_ACMF,
209 .bmCapabilities = 0x00,
16c8d5e7
WD
210 },
211 .usb_class_union = {
386eda02 212 .bFunctionLength =
16c8d5e7
WD
213 sizeof(struct usb_class_union_function_descriptor),
214 .bDescriptorType = CS_INTERFACE,
215 .bDescriptorSubtype = USB_ST_UF,
386eda02
WD
216 .bMasterInterface = 0x00,
217 .bSlaveInterface0 = 0x01,
16c8d5e7
WD
218 },
219 .notification_endpoint = {
386eda02 220 .bLength =
16c8d5e7
WD
221 sizeof(struct usb_endpoint_descriptor),
222 .bDescriptorType = USB_DT_ENDPOINT,
223 .bEndpointAddress = 0x01 | USB_DIR_IN,
224 .bmAttributes = USB_ENDPOINT_XFER_INT,
386eda02 225 .wMaxPacketSize
16c8d5e7
WD
226 = cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
227 .bInterval = 0xFF,
228 },
229
230 /* Interface 2 */
231 .data_class_interface = {
386eda02 232 .bLength =
16c8d5e7
WD
233 sizeof(struct usb_interface_descriptor),
234 .bDescriptorType = USB_DT_INTERFACE,
235 .bInterfaceNumber = 0x01,
236 .bAlternateSetting = 0x00,
237 .bNumEndpoints = 0x02,
386eda02 238 .bInterfaceClass =
16c8d5e7
WD
239 COMMUNICATIONS_INTERFACE_CLASS_DATA,
240 .bInterfaceSubClass = DATA_INTERFACE_SUBCLASS_NONE,
241 .bInterfaceProtocol = DATA_INTERFACE_PROTOCOL_NONE,
242 .iInterface = STR_DATA_INTERFACE,
243 },
244 .data_endpoints = {
245 {
386eda02 246 .bLength =
16c8d5e7
WD
247 sizeof(struct usb_endpoint_descriptor),
248 .bDescriptorType = USB_DT_ENDPOINT,
249 .bEndpointAddress = 0x02 | USB_DIR_OUT,
386eda02 250 .bmAttributes =
16c8d5e7 251 USB_ENDPOINT_XFER_BULK,
386eda02 252 .wMaxPacketSize =
16c8d5e7
WD
253 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
254 .bInterval = 0xFF,
255 },
256 {
386eda02 257 .bLength =
16c8d5e7
WD
258 sizeof(struct usb_endpoint_descriptor),
259 .bDescriptorType = USB_DT_ENDPOINT,
260 .bEndpointAddress = 0x03 | USB_DIR_IN,
386eda02 261 .bmAttributes =
16c8d5e7 262 USB_ENDPOINT_XFER_BULK,
386eda02 263 .wMaxPacketSize =
16c8d5e7
WD
264 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
265 .bInterval = 0xFF,
266 },
267 },
268 },
386eda02 269};
16c8d5e7
WD
270
271static struct rs232_emu rs232_desc={
272 .dter = 115200,
273 .stop_bits = 0x00,
274 .parity = 0x00,
275 .data_bits = 0x08
232c150a
WD
276};
277
232c150a 278
16c8d5e7
WD
279/*
280 * Static Generic Serial specific data
281 */
282
283
284struct gserial_config_desc {
386eda02 285
16c8d5e7 286 struct usb_configuration_descriptor configuration_desc;
386eda02 287 struct usb_interface_descriptor
16c8d5e7 288 interface_desc[NUM_GSERIAL_INTERFACES] __attribute__((packed));
386eda02 289 struct usb_endpoint_descriptor
16c8d5e7
WD
290 data_endpoints[NUM_ENDPOINTS] __attribute__((packed));
291
292} __attribute__((packed));
293
386eda02 294static struct gserial_config_desc
16c8d5e7
WD
295gserial_configuration_descriptors[NUM_CONFIGS] ={
296 {
297 .configuration_desc ={
298 .bLength = sizeof(struct usb_configuration_descriptor),
299 .bDescriptorType = USB_DT_CONFIG,
386eda02 300 .wTotalLength =
16c8d5e7
WD
301 cpu_to_le16(sizeof(struct gserial_config_desc)),
302 .bNumInterfaces = NUM_GSERIAL_INTERFACES,
303 .bConfigurationValue = 1,
304 .iConfiguration = STR_CONFIG,
386eda02 305 .bmAttributes =
16c8d5e7
WD
306 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
307 .bMaxPower = USBTTY_MAXPOWER
308 },
309 .interface_desc = {
310 {
386eda02 311 .bLength =
16c8d5e7
WD
312 sizeof(struct usb_interface_descriptor),
313 .bDescriptorType = USB_DT_INTERFACE,
314 .bInterfaceNumber = 0,
315 .bAlternateSetting = 0,
316 .bNumEndpoints = NUM_ENDPOINTS,
386eda02 317 .bInterfaceClass =
16c8d5e7 318 COMMUNICATIONS_INTERFACE_CLASS_VENDOR,
386eda02 319 .bInterfaceSubClass =
16c8d5e7 320 COMMUNICATIONS_NO_SUBCLASS,
386eda02 321 .bInterfaceProtocol =
16c8d5e7
WD
322 COMMUNICATIONS_NO_PROTOCOL,
323 .iInterface = STR_DATA_INTERFACE
324 },
325 },
326 .data_endpoints = {
327 {
386eda02 328 .bLength =
16c8d5e7
WD
329 sizeof(struct usb_endpoint_descriptor),
330 .bDescriptorType = USB_DT_ENDPOINT,
331 .bEndpointAddress = 0x01 | USB_DIR_OUT,
332 .bmAttributes = USB_ENDPOINT_XFER_BULK,
386eda02 333 .wMaxPacketSize =
16c8d5e7
WD
334 cpu_to_le16(CONFIG_USBD_SERIAL_OUT_PKTSIZE),
335 .bInterval= 0xFF,
336 },
337 {
386eda02 338 .bLength =
16c8d5e7
WD
339 sizeof(struct usb_endpoint_descriptor),
340 .bDescriptorType = USB_DT_ENDPOINT,
341 .bEndpointAddress = 0x02 | USB_DIR_IN,
342 .bmAttributes = USB_ENDPOINT_XFER_BULK,
386eda02 343 .wMaxPacketSize =
16c8d5e7
WD
344 cpu_to_le16(CONFIG_USBD_SERIAL_IN_PKTSIZE),
345 .bInterval = 0xFF,
346 },
347 {
386eda02 348 .bLength =
16c8d5e7
WD
349 sizeof(struct usb_endpoint_descriptor),
350 .bDescriptorType = USB_DT_ENDPOINT,
351 .bEndpointAddress = 0x03 | USB_DIR_IN,
352 .bmAttributes = USB_ENDPOINT_XFER_INT,
386eda02 353 .wMaxPacketSize =
16c8d5e7
WD
354 cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
355 .bInterval = 0xFF,
356 },
357 },
358 },
359};
232c150a
WD
360
361/*
16c8d5e7 362 * Static Function Prototypes
232c150a 363 */
16c8d5e7 364
232c150a
WD
365static void usbtty_init_strings (void);
366static void usbtty_init_instances (void);
367static void usbtty_init_endpoints (void);
16c8d5e7 368static void usbtty_init_terminal_type(short type);
232c150a 369static void usbtty_event_handler (struct usb_device_instance *device,
16c8d5e7 370 usb_device_event_t event, int data);
386eda02 371static int usbtty_cdc_setup(struct usb_device_request *request,
16c8d5e7 372 struct urb *urb);
232c150a 373static int usbtty_configured (void);
232c150a
WD
374static int write_buffer (circbuf_t * buf);
375static int fill_buffer (circbuf_t * buf);
376
377void usbtty_poll (void);
232c150a 378
16c8d5e7
WD
379/* utility function for converting char* to wide string used by USB */
380static void str2wide (char *str, u16 * wide)
381{
382 int i;
383 for (i = 0; i < strlen (str) && str[i]; i++){
18135125 384 #if defined(__LITTLE_ENDIAN)
16c8d5e7 385 wide[i] = (u16) str[i];
18135125 386 #elif defined(__BIG_ENDIAN)
16c8d5e7
WD
387 wide[i] = ((u16)(str[i])<<8);
388 #else
18135125 389 #error "__LITTLE_ENDIAN or __BIG_ENDIAN undefined"
16c8d5e7
WD
390 #endif
391 }
392}
232c150a
WD
393
394/*
395 * Test whether a character is in the RX buffer
396 */
16c8d5e7 397
232c150a
WD
398int usbtty_tstc (void)
399{
16c8d5e7
WD
400 struct usb_endpoint_instance *endpoint =
401 &endpoint_instance[rx_endpoint];
402
403 /* If no input data exists, allow more RX to be accepted */
404 if(usbtty_input.size <= 0){
405 udc_unset_nak(endpoint->endpoint_address&0x03);
406 }
407
232c150a
WD
408 usbtty_poll ();
409 return (usbtty_input.size > 0);
410}
411
412/*
413 * Read a single byte from the usb client port. Returns 1 on success, 0
414 * otherwise. When the function is succesfull, the character read is
415 * written into its argument c.
416 */
16c8d5e7 417
232c150a
WD
418int usbtty_getc (void)
419{
420 char c;
16c8d5e7
WD
421 struct usb_endpoint_instance *endpoint =
422 &endpoint_instance[rx_endpoint];
232c150a
WD
423
424 while (usbtty_input.size <= 0) {
16c8d5e7 425 udc_unset_nak(endpoint->endpoint_address&0x03);
232c150a
WD
426 usbtty_poll ();
427 }
428
429 buf_pop (&usbtty_input, &c, 1);
16c8d5e7
WD
430 udc_set_nak(endpoint->endpoint_address&0x03);
431
232c150a
WD
432 return c;
433}
434
435/*
436 * Output a single byte to the usb client port.
437 */
438void usbtty_putc (const char c)
439{
440 buf_push (&usbtty_output, &c, 1);
441 /* If \n, also do \r */
442 if (c == '\n')
443 buf_push (&usbtty_output, "\r", 1);
444
445 /* Poll at end to handle new data... */
446 if ((usbtty_output.size + 2) >= usbtty_output.totalsize) {
447 usbtty_poll ();
448 }
449}
450
232c150a
WD
451/* usbtty_puts() helper function for finding the next '\n' in a string */
452static int next_nl_pos (const char *s)
453{
454 int i;
455
456 for (i = 0; s[i] != '\0'; i++) {
457 if (s[i] == '\n')
458 return i;
459 }
460 return i;
461}
462
463/*
16c8d5e7 464 * Output a string to the usb client port - implementing flow control
232c150a 465 */
16c8d5e7 466
232c150a
WD
467static void __usbtty_puts (const char *str, int len)
468{
469 int maxlen = usbtty_output.totalsize;
470 int space, n;
471
472 /* break str into chunks < buffer size, if needed */
473 while (len > 0) {
16c8d5e7 474 usbtty_poll ();
232c150a 475
16c8d5e7 476 space = maxlen - usbtty_output.size;
232c150a 477 /* Empty buffer here, if needed, to ensure space... */
16c8d5e7 478 if (space) {
232c150a 479 write_buffer (&usbtty_output);
386eda02 480
16c8d5e7
WD
481 n = MIN (space, MIN (len, maxlen));
482 buf_push (&usbtty_output, str, n);
232c150a 483
16c8d5e7 484 str += n;
386eda02 485 len -= n;
16c8d5e7 486 }
232c150a
WD
487 }
488}
489
490void usbtty_puts (const char *str)
491{
492 int n;
493 int len = strlen (str);
494
495 /* add '\r' for each '\n' */
496 while (len > 0) {
497 n = next_nl_pos (str);
498
499 if (str[n] == '\n') {
500 __usbtty_puts (str, n + 1);
501 __usbtty_puts ("\r", 1);
502 str += (n + 1);
503 len -= (n + 1);
504 } else {
505 /* No \n found. All done. */
506 __usbtty_puts (str, n);
507 break;
508 }
509 }
510
511 /* Poll at end to handle new data... */
512 usbtty_poll ();
513}
514
515/*
516 * Initialize the usb client port.
517 *
518 */
519int drv_usbtty_init (void)
520{
521 int rc;
6629d2f2 522 char * sn;
16c8d5e7 523 char * tt;
6629d2f2 524 int snlen;
42dfe7a1 525
16c8d5e7 526 /* Ger seiral number */
6629d2f2
WD
527 if (!(sn = getenv("serial#"))) {
528 sn = "000000000000";
529 }
530 snlen = strlen(sn);
531 if (snlen > sizeof(serial_number) - 1) {
532 printf ("Warning: serial number %s is too long (%d > %d)\n",
533 sn, snlen, sizeof(serial_number) - 1);
534 snlen = sizeof(serial_number) - 1;
535 }
536 memcpy (serial_number, sn, snlen);
537 serial_number[snlen] = '\0';
232c150a 538
16c8d5e7
WD
539 /* Decide on which type of UDC device to be.
540 */
541
542 if(!(tt = getenv("usbtty"))) {
543 tt = "generic";
544 }
545 usbtty_init_terminal_type(strcmp(tt,"cdc_acm"));
386eda02 546
232c150a
WD
547 /* prepare buffers... */
548 buf_init (&usbtty_input, USBTTY_BUFFER_SIZE);
549 buf_init (&usbtty_output, USBTTY_BUFFER_SIZE);
550
551 /* Now, set up USB controller and infrastructure */
552 udc_init (); /* Basic USB initialization */
553
554 usbtty_init_strings ();
555 usbtty_init_instances ();
556
16c8d5e7 557 udc_startup_events (device_instance);/* Enable dev, init udc pointers */
232c150a
WD
558 udc_connect (); /* Enable pullup for host detection */
559
560 usbtty_init_endpoints ();
561
562 /* Device initialization */
563 memset (&usbttydev, 0, sizeof (usbttydev));
564
565 strcpy (usbttydev.name, "usbtty");
566 usbttydev.ext = 0; /* No extensions */
567 usbttydev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_OUTPUT;
568 usbttydev.tstc = usbtty_tstc; /* 'tstc' function */
569 usbttydev.getc = usbtty_getc; /* 'getc' function */
570 usbttydev.putc = usbtty_putc; /* 'putc' function */
571 usbttydev.puts = usbtty_puts; /* 'puts' function */
572
573 rc = device_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
386eda02 582 usbtty_string_table[STR_LANG] =
16c8d5e7
WD
583 (struct usb_string_descriptor*)wstrLang;
584
232c150a 585 string = (struct usb_string_descriptor *) wstrManufacturer;
16c8d5e7 586 string->bLength = sizeof(wstrManufacturer);
232c150a
WD
587 string->bDescriptorType = USB_DT_STRING;
588 str2wide (CONFIG_USBD_MANUFACTURER, string->wData);
16c8d5e7
WD
589 usbtty_string_table[STR_MANUFACTURER]=string;
590
232c150a
WD
591
592 string = (struct usb_string_descriptor *) wstrProduct;
16c8d5e7 593 string->bLength = sizeof(wstrProduct);
232c150a
WD
594 string->bDescriptorType = USB_DT_STRING;
595 str2wide (CONFIG_USBD_PRODUCT_NAME, string->wData);
16c8d5e7
WD
596 usbtty_string_table[STR_PRODUCT]=string;
597
232c150a
WD
598
599 string = (struct usb_string_descriptor *) wstrSerial;
16c8d5e7 600 string->bLength = sizeof(serial_number);
232c150a 601 string->bDescriptorType = USB_DT_STRING;
6629d2f2 602 str2wide (serial_number, string->wData);
16c8d5e7
WD
603 usbtty_string_table[STR_SERIAL]=string;
604
232c150a
WD
605
606 string = (struct usb_string_descriptor *) wstrConfiguration;
16c8d5e7 607 string->bLength = sizeof(wstrConfiguration);
232c150a
WD
608 string->bDescriptorType = USB_DT_STRING;
609 str2wide (CONFIG_USBD_CONFIGURATION_STR, string->wData);
16c8d5e7
WD
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;
232c150a 618
16c8d5e7
WD
619 string = (struct usb_string_descriptor *) wstrCtrlInterface;
620 string->bLength = sizeof(wstrCtrlInterface);
232c150a 621 string->bDescriptorType = USB_DT_STRING;
16c8d5e7
WD
622 str2wide (CONFIG_USBD_CTRL_INTERFACE_STR, string->wData);
623 usbtty_string_table[STR_CTRL_INTERFACE]=string;
232c150a
WD
624
625 /* Now, initialize the string table for ep0 handling */
626 usb_strings = usbtty_string_table;
386eda02 627}
232c150a
WD
628
629static void usbtty_init_instances (void)
630{
631 int i;
632
633 /* initialize device instance */
634 memset (device_instance, 0, sizeof (struct usb_device_instance));
635 device_instance->device_state = STATE_INIT;
636 device_instance->device_descriptor = &device_descriptor;
637 device_instance->event = usbtty_event_handler;
16c8d5e7 638 device_instance->cdc_recv_setup = usbtty_cdc_setup;
232c150a
WD
639 device_instance->bus = bus_instance;
640 device_instance->configurations = NUM_CONFIGS;
641 device_instance->configuration_instance_array = config_instance;
642
643 /* initialize bus instance */
644 memset (bus_instance, 0, sizeof (struct usb_bus_instance));
645 bus_instance->device = device_instance;
646 bus_instance->endpoint_array = endpoint_instance;
647 bus_instance->max_endpoints = 1;
648 bus_instance->maxpacketsize = 64;
6629d2f2 649 bus_instance->serial_number_str = serial_number;
232c150a
WD
650
651 /* configuration instance */
652 memset (config_instance, 0,
653 sizeof (struct usb_configuration_instance));
16c8d5e7
WD
654 config_instance->interfaces = interface_count;
655 config_instance->configuration_descriptor = configuration_descriptor;
232c150a
WD
656 config_instance->interface_instance_array = interface_instance;
657
658 /* interface instance */
659 memset (interface_instance, 0,
660 sizeof (struct usb_interface_instance));
661 interface_instance->alternates = 1;
662 interface_instance->alternates_instance_array = alternate_instance;
663
664 /* alternates instance */
665 memset (alternate_instance, 0,
666 sizeof (struct usb_alternate_instance));
667 alternate_instance->interface_descriptor = interface_descriptors;
668 alternate_instance->endpoints = NUM_ENDPOINTS;
669 alternate_instance->endpoints_descriptor_array = ep_descriptor_ptrs;
670
671 /* endpoint instances */
672 memset (&endpoint_instance[0], 0,
673 sizeof (struct usb_endpoint_instance));
674 endpoint_instance[0].endpoint_address = 0;
675 endpoint_instance[0].rcv_packetSize = EP0_MAX_PACKET_SIZE;
676 endpoint_instance[0].rcv_attributes = USB_ENDPOINT_XFER_CONTROL;
677 endpoint_instance[0].tx_packetSize = EP0_MAX_PACKET_SIZE;
678 endpoint_instance[0].tx_attributes = USB_ENDPOINT_XFER_CONTROL;
679 udc_setup_ep (device_instance, 0, &endpoint_instance[0]);
680
681 for (i = 1; i <= NUM_ENDPOINTS; i++) {
682 memset (&endpoint_instance[i], 0,
683 sizeof (struct usb_endpoint_instance));
684
685 endpoint_instance[i].endpoint_address =
16c8d5e7 686 ep_descriptor_ptrs[i - 1]->bEndpointAddress;
232c150a 687
232c150a 688 endpoint_instance[i].rcv_attributes =
16c8d5e7
WD
689 ep_descriptor_ptrs[i - 1]->bmAttributes;
690
691 endpoint_instance[i].rcv_packetSize =
692 le16_to_cpu(ep_descriptor_ptrs[i - 1]->wMaxPacketSize);
386eda02 693
16c8d5e7
WD
694 endpoint_instance[i].tx_attributes =
695 ep_descriptor_ptrs[i - 1]->bmAttributes;
232c150a
WD
696
697 endpoint_instance[i].tx_packetSize =
16c8d5e7
WD
698 le16_to_cpu(ep_descriptor_ptrs[i - 1]->wMaxPacketSize);
699
232c150a 700 endpoint_instance[i].tx_attributes =
16c8d5e7 701 ep_descriptor_ptrs[i - 1]->bmAttributes;
232c150a
WD
702
703 urb_link_init (&endpoint_instance[i].rcv);
704 urb_link_init (&endpoint_instance[i].rdy);
705 urb_link_init (&endpoint_instance[i].tx);
706 urb_link_init (&endpoint_instance[i].done);
707
708 if (endpoint_instance[i].endpoint_address & USB_DIR_IN)
709 endpoint_instance[i].tx_urb =
710 usbd_alloc_urb (device_instance,
711 &endpoint_instance[i]);
712 else
713 endpoint_instance[i].rcv_urb =
714 usbd_alloc_urb (device_instance,
715 &endpoint_instance[i]);
716 }
717}
718
719static void usbtty_init_endpoints (void)
720{
721 int i;
722
723 bus_instance->max_endpoints = NUM_ENDPOINTS + 1;
386eda02 724 for (i = 1; i <= NUM_ENDPOINTS; i++) {
232c150a
WD
725 udc_setup_ep (device_instance, i, &endpoint_instance[i]);
726 }
727}
728
16c8d5e7 729/* usbtty_init_terminal_type
386eda02 730 *
16c8d5e7
WD
731 * Do some late binding for our device type.
732 */
733static void usbtty_init_terminal_type(short type)
734{
735 switch(type){
386eda02 736 /* CDC ACM */
16c8d5e7
WD
737 case 0:
738 /* Assign endpoint descriptors */
386eda02 739 ep_descriptor_ptrs[0] =
16c8d5e7 740 &acm_configuration_descriptors[0].notification_endpoint;
386eda02 741 ep_descriptor_ptrs[1] =
16c8d5e7 742 &acm_configuration_descriptors[0].data_endpoints[0];
386eda02 743 ep_descriptor_ptrs[2] =
16c8d5e7
WD
744 &acm_configuration_descriptors[0].data_endpoints[1];
745
746 /* Enumerate Device Descriptor */
386eda02 747 device_descriptor.bDeviceClass =
16c8d5e7
WD
748 COMMUNICATIONS_DEVICE_CLASS;
749 device_descriptor.idProduct =
750 cpu_to_le16(CONFIG_USBD_PRODUCTID_CDCACM);
751
752 /* Assign endpoint indices */
753 tx_endpoint = ACM_TX_ENDPOINT;
754 rx_endpoint = ACM_RX_ENDPOINT;
386eda02 755
16c8d5e7
WD
756 /* Configuration Descriptor */
757 configuration_descriptor =
758 (struct usb_configuration_descriptor*)
759 &acm_configuration_descriptors;
760
761 /* Interface count */
762 interface_count = NUM_ACM_INTERFACES;
763 break;
232c150a 764
16c8d5e7
WD
765 /* BULK IN/OUT & Default */
766 case 1:
767 default:
768 /* Assign endpoint descriptors */
386eda02 769 ep_descriptor_ptrs[0] =
16c8d5e7 770 &gserial_configuration_descriptors[0].data_endpoints[0];
386eda02 771 ep_descriptor_ptrs[1] =
16c8d5e7 772 &gserial_configuration_descriptors[0].data_endpoints[1];
386eda02 773 ep_descriptor_ptrs[2] =
16c8d5e7
WD
774 &gserial_configuration_descriptors[0].data_endpoints[2];
775
776 /* Enumerate Device Descriptor */
777 device_descriptor.bDeviceClass = 0xFF;
778 device_descriptor.idProduct =
779 cpu_to_le16(CONFIG_USBD_PRODUCTID_GSERIAL);
780
781 /* Assign endpoint indices */
782 tx_endpoint = GSERIAL_TX_ENDPOINT;
783 rx_endpoint = GSERIAL_RX_ENDPOINT;
784
785 /* Configuration Descriptor */
386eda02 786 configuration_descriptor =
16c8d5e7
WD
787 (struct usb_configuration_descriptor*)
788 &gserial_configuration_descriptors;
789
790 /* Interface count */
791 interface_count = NUM_GSERIAL_INTERFACES;
792 break;
793 }
794}
795
796/******************************************************************************/
232c150a
WD
797
798static struct urb *next_urb (struct usb_device_instance *device,
799 struct usb_endpoint_instance *endpoint)
800{
801 struct urb *current_urb = NULL;
802 int space;
803
804 /* If there's a queue, then we should add to the last urb */
805 if (!endpoint->tx_queue) {
806 current_urb = endpoint->tx_urb;
807 } else {
808 /* Last urb from tx chain */
809 current_urb =
810 p2surround (struct urb, link, endpoint->tx.prev);
811 }
812
813 /* Make sure this one has enough room */
814 space = current_urb->buffer_length - current_urb->actual_length;
815 if (space > 0) {
816 return current_urb;
817 } else { /* No space here */
818 /* First look at done list */
819 current_urb = first_urb_detached (&endpoint->done);
820 if (!current_urb) {
821 current_urb = usbd_alloc_urb (device, endpoint);
822 }
823
824 urb_append (&endpoint->tx, current_urb);
825 endpoint->tx_queue++;
826 }
827 return current_urb;
828}
829
830static int write_buffer (circbuf_t * buf)
831{
832 if (!usbtty_configured ()) {
833 return 0;
834 }
386eda02 835
16c8d5e7
WD
836 struct usb_endpoint_instance *endpoint =
837 &endpoint_instance[tx_endpoint];
838 struct urb *current_urb = NULL;
232c150a 839
16c8d5e7 840 current_urb = next_urb (device_instance, endpoint);
386eda02
WD
841 /* TX data still exists - send it now
842 */
16c8d5e7
WD
843 if(endpoint->sent < current_urb->actual_length){
844 if(udc_endpoint_write (endpoint)){
845 /* Write pre-empted by RX */
846 return -1;
847 }
848 }
232c150a 849
16c8d5e7 850 if (buf->size) {
232c150a
WD
851 char *dest;
852
853 int space_avail;
854 int popnum, popped;
855 int total = 0;
856
386eda02
WD
857 /* Break buffer into urb sized pieces,
858 * and link each to the endpoint
16c8d5e7 859 */
232c150a 860 while (buf->size > 0) {
386eda02 861
232c150a
WD
862 if (!current_urb) {
863 TTYERR ("current_urb is NULL, buf->size %d\n",
864 buf->size);
865 return total;
866 }
867
16c8d5e7 868 dest = (char*)current_urb->buffer +
232c150a
WD
869 current_urb->actual_length;
870
871 space_avail =
872 current_urb->buffer_length -
873 current_urb->actual_length;
874 popnum = MIN (space_avail, buf->size);
875 if (popnum == 0)
876 break;
877
878 popped = buf_pop (buf, dest, popnum);
879 if (popped == 0)
880 break;
881 current_urb->actual_length += popped;
882 total += popped;
883
386eda02
WD
884 /* If endpoint->last == 0, then transfers have
885 * not started on this endpoint
16c8d5e7 886 */
232c150a 887 if (endpoint->last == 0) {
16c8d5e7
WD
888 if(udc_endpoint_write (endpoint)){
889 /* Write pre-empted by RX */
890 return -1;
891 }
232c150a
WD
892 }
893
16c8d5e7 894 }/* end while */
232c150a 895 return total;
16c8d5e7 896 }
232c150a
WD
897
898 return 0;
899}
900
901static int fill_buffer (circbuf_t * buf)
902{
903 struct usb_endpoint_instance *endpoint =
16c8d5e7 904 &endpoint_instance[rx_endpoint];
232c150a
WD
905
906 if (endpoint->rcv_urb && endpoint->rcv_urb->actual_length) {
386eda02 907 unsigned int nb = 0;
232c150a 908 char *src = (char *) endpoint->rcv_urb->buffer;
16c8d5e7 909 unsigned int rx_avail = buf->totalsize - buf->size;
232c150a 910
16c8d5e7 911 if(rx_avail >= endpoint->rcv_urb->actual_length){
232c150a 912
16c8d5e7
WD
913 nb = endpoint->rcv_urb->actual_length;
914 buf_push (buf, src, nb);
915 endpoint->rcv_urb->actual_length = 0;
386eda02 916
16c8d5e7 917 }
232c150a
WD
918 return nb;
919 }
232c150a
WD
920 return 0;
921}
922
923static int usbtty_configured (void)
924{
925 return usbtty_configured_flag;
926}
927
16c8d5e7 928/******************************************************************************/
232c150a
WD
929
930static void usbtty_event_handler (struct usb_device_instance *device,
931 usb_device_event_t event, int data)
932{
933 switch (event) {
934 case DEVICE_RESET:
935 case DEVICE_BUS_INACTIVE:
936 usbtty_configured_flag = 0;
937 break;
938 case DEVICE_CONFIGURED:
939 usbtty_configured_flag = 1;
940 break;
941
942 case DEVICE_ADDRESS_ASSIGNED:
943 usbtty_init_endpoints ();
944
945 default:
946 break;
947 }
948}
949
16c8d5e7
WD
950/******************************************************************************/
951
952int usbtty_cdc_setup(struct usb_device_request *request, struct urb *urb)
953{
954 switch (request->bRequest){
232c150a 955
16c8d5e7
WD
956 case ACM_SET_CONTROL_LINE_STATE: /* Implies DTE ready */
957 break;
958 case ACM_SEND_ENCAPSULATED_COMMAND : /* Required */
959 break;
960 case ACM_SET_LINE_ENCODING : /* DTE stop/parity bits
386eda02 961 * per character */
16c8d5e7
WD
962 break;
963 case ACM_GET_ENCAPSULATED_RESPONSE : /* request response */
964 break;
965 case ACM_GET_LINE_ENCODING : /* request DTE rate,
966 * stop/parity bits */
967 memcpy (urb->buffer , &rs232_desc, sizeof(rs232_desc));
968 urb->actual_length = sizeof(rs232_desc);
969
970 break;
971 default:
972 return 1;
973 }
974 return 0;
975}
976
977/******************************************************************************/
232c150a
WD
978
979/*
980 * Since interrupt handling has not yet been implemented, we use this function
981 * to handle polling. This is called by the tstc,getc,putc,puts routines to
982 * update the USB state.
983 */
984void usbtty_poll (void)
985{
986 /* New interrupts? */
16c8d5e7 987 udc_irq();
232c150a 988
386eda02
WD
989 /* Write any output data to host buffer
990 * (do this before checking interrupts to avoid missing one)
16c8d5e7 991 */
232c150a
WD
992 if (usbtty_configured ()) {
993 write_buffer (&usbtty_output);
994 }
995
996 /* New interrupts? */
16c8d5e7 997 udc_irq();
386eda02
WD
998
999 /* Check for new data from host..
1000 * (do this after checking interrupts to get latest data)
16c8d5e7 1001 */
232c150a
WD
1002 if (usbtty_configured ()) {
1003 fill_buffer (&usbtty_input);
1004 }
1005
1006 /* New interrupts? */
16c8d5e7 1007 udc_irq();
232c150a 1008
232c150a 1009}
16c8d5e7
WD
1010
1011
232c150a 1012#endif