blob: cffd5a2b25259d5018274b7144dec6ed40c34acc [file] [log] [blame]
wdenk232c1502004-03-12 00:14:09 +00001/*
2 * (C) Copyright 2003
3 * Gerry Hamel, geh@ti.com, Texas Instruments
Wolfgang Denk386eda02006-06-14 18:14:56 +02004 *
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02005 * (C) Copyright 2006
6 * Bryan O'Donoghue, bodonoghue@codehermit.ie
wdenk232c1502004-03-12 00:14:09 +00007 *
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>
Jean-Christophe PLAGNIOL-VILLARDdedacc12008-12-07 09:45:35 +010025#include <config.h>
wdenk232c1502004-03-12 00:14:09 +000026#include <circbuf.h>
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020027#include <stdio_dev.h>
wdenk232c1502004-03-12 00:14:09 +000028#include "usbtty.h"
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020029#include "usb_cdc_acm.h"
30#include "usbdescriptors.h"
wdenk232c1502004-03-12 00:14:09 +000031
Jean-Christophe PLAGNIOL-VILLARDdedacc12008-12-07 09:45:35 +010032#ifdef DEBUG
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020033#define TTYDBG(fmt,args...)\
34 serial_printf("[%s] %s %d: "fmt, __FILE__,__FUNCTION__,__LINE__,##args)
wdenk232c1502004-03-12 00:14:09 +000035#else
36#define TTYDBG(fmt,args...) do{}while(0)
37#endif
38
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020039#if 1
40#define TTYERR(fmt,args...)\
41 serial_printf("ERROR![%s] %s %d: "fmt, __FILE__,__FUNCTION__,\
42 __LINE__,##args)
wdenk232c1502004-03-12 00:14:09 +000043#else
44#define TTYERR(fmt,args...) do{}while(0)
45#endif
46
47/*
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020048 * 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/*
wdenk232c1502004-03-12 00:14:09 +000063 * Buffers to hold input and output data
64 */
65#define USBTTY_BUFFER_SIZE 256
66static circbuf_t usbtty_input;
67static circbuf_t usbtty_output;
68
69
70/*
71 * Instance variables
72 */
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020073static struct stdio_dev usbttydev;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020074static struct usb_device_instance device_instance[1];
75static struct usb_bus_instance bus_instance[1];
wdenk232c1502004-03-12 00:14:09 +000076static struct usb_configuration_instance config_instance[NUM_CONFIGS];
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020077static struct usb_interface_instance interface_instance[MAX_INTERFACES];
78static struct usb_alternate_instance alternate_instance[MAX_INTERFACES];
79/* one extra for control endpoint */
80static struct usb_endpoint_instance endpoint_instance[NUM_ENDPOINTS+1];
wdenk232c1502004-03-12 00:14:09 +000081
82/*
83 * Global flag
84 */
85int usbtty_configured_flag = 0;
86
wdenk232c1502004-03-12 00:14:09 +000087/*
wdenk6629d2f2004-03-12 15:38:25 +000088 * Serial number
89 */
90static char serial_number[16];
91
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020092
wdenk6629d2f2004-03-12 15:38:25 +000093/*
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020094 * Descriptors, Strings, Local variables.
wdenk232c1502004-03-12 00:14:09 +000095 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020096
Jean-Christophe PLAGNIOL-VILLARD2731b9a2009-04-03 12:46:58 +020097/* defined and used by gadget/ep0.c */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020098extern struct usb_string_descriptor **usb_strings;
99
100/* Indicies, References */
101static unsigned short rx_endpoint = 0;
102static unsigned short tx_endpoint = 0;
103static unsigned short interface_count = 0;
104static struct usb_string_descriptor *usbtty_string_table[STR_COUNT];
105
106/* USB Descriptor Strings */
wdenk232c1502004-03-12 00:14:09 +0000107static u8 wstrLang[4] = {4,USB_DT_STRING,0x9,0x4};
108static u8 wstrManufacturer[2 + 2*(sizeof(CONFIG_USBD_MANUFACTURER)-1)];
109static u8 wstrProduct[2 + 2*(sizeof(CONFIG_USBD_PRODUCT_NAME)-1)];
wdenk6629d2f2004-03-12 15:38:25 +0000110static u8 wstrSerial[2 + 2*(sizeof(serial_number) - 1)];
wdenk232c1502004-03-12 00:14:09 +0000111static u8 wstrConfiguration[2 + 2*(sizeof(CONFIG_USBD_CONFIGURATION_STR)-1)];
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200112static u8 wstrDataInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
113static u8 wstrCtrlInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
wdenk232c1502004-03-12 00:14:09 +0000114
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200115/* Standard USB Data Structures */
116static struct usb_interface_descriptor interface_descriptors[MAX_INTERFACES];
117static struct usb_endpoint_descriptor *ep_descriptor_ptrs[NUM_ENDPOINTS];
118static struct usb_configuration_descriptor *configuration_descriptor = 0;
wdenk232c1502004-03-12 00:14:09 +0000119static struct usb_device_descriptor device_descriptor = {
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200120 .bLength = sizeof(struct usb_device_descriptor),
121 .bDescriptorType = USB_DT_DEVICE,
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200122 .bcdUSB = cpu_to_le16(USB_BCD_VERSION),
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200123 .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
wdenk232c1502004-03-12 00:14:09 +0000132};
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200133
134
135/*
136 * Static CDC ACM specific descriptors
137 */
138
139struct acm_config_desc {
140 struct usb_configuration_descriptor configuration_desc;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200141
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200142 /* Master Interface */
143 struct usb_interface_descriptor interface_desc;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200144
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200145 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;
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500153 struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS-1];
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200154} __attribute__((packed));
155
156static struct acm_config_desc acm_configuration_descriptors[NUM_CONFIGS] = {
157 {
158 .configuration_desc ={
Wolfgang Denk386eda02006-06-14 18:14:56 +0200159 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200160 sizeof(struct usb_configuration_descriptor),
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200161 .bDescriptorType = USB_DT_CONFIG,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200162 .wTotalLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200163 cpu_to_le16(sizeof(struct acm_config_desc)),
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200164 .bNumInterfaces = NUM_ACM_INTERFACES,
165 .bConfigurationValue = 1,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200166 .iConfiguration = STR_CONFIG,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200167 .bmAttributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200168 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
169 .bMaxPower = USBTTY_MAXPOWER
170 },
171 /* Interface 1 */
172 .interface_desc = {
173 .bLength = sizeof(struct usb_interface_descriptor),
174 .bDescriptorType = USB_DT_INTERFACE,
175 .bInterfaceNumber = 0,
176 .bAlternateSetting = 0,
177 .bNumEndpoints = 0x01,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200178 .bInterfaceClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200179 COMMUNICATIONS_INTERFACE_CLASS_CONTROL,
180 .bInterfaceSubClass = COMMUNICATIONS_ACM_SUBCLASS,
181 .bInterfaceProtocol = COMMUNICATIONS_V25TER_PROTOCOL,
182 .iInterface = STR_CTRL_INTERFACE,
183 },
184 .usb_class_header = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200185 .bFunctionLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200186 sizeof(struct usb_class_header_function_descriptor),
Wolfgang Denk386eda02006-06-14 18:14:56 +0200187 .bDescriptorType = CS_INTERFACE,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200188 .bDescriptorSubtype = USB_ST_HEADER,
189 .bcdCDC = cpu_to_le16(110),
190 },
191 .usb_class_call_mgt = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200192 .bFunctionLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200193 sizeof(struct usb_class_call_management_descriptor),
194 .bDescriptorType = CS_INTERFACE,
195 .bDescriptorSubtype = USB_ST_CMF,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200196 .bmCapabilities = 0x00,
197 .bDataInterface = 0x01,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200198 },
199 .usb_class_acm = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200200 .bFunctionLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200201 sizeof(struct usb_class_abstract_control_descriptor),
202 .bDescriptorType = CS_INTERFACE,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200203 .bDescriptorSubtype = USB_ST_ACMF,
204 .bmCapabilities = 0x00,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200205 },
206 .usb_class_union = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200207 .bFunctionLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200208 sizeof(struct usb_class_union_function_descriptor),
209 .bDescriptorType = CS_INTERFACE,
210 .bDescriptorSubtype = USB_ST_UF,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200211 .bMasterInterface = 0x00,
212 .bSlaveInterface0 = 0x01,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200213 },
214 .notification_endpoint = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200215 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200216 sizeof(struct usb_endpoint_descriptor),
217 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530218 .bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200219 .bmAttributes = USB_ENDPOINT_XFER_INT,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200220 .wMaxPacketSize
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200221 = cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
222 .bInterval = 0xFF,
223 },
224
225 /* Interface 2 */
226 .data_class_interface = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200227 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200228 sizeof(struct usb_interface_descriptor),
229 .bDescriptorType = USB_DT_INTERFACE,
230 .bInterfaceNumber = 0x01,
231 .bAlternateSetting = 0x00,
232 .bNumEndpoints = 0x02,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200233 .bInterfaceClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200234 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 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200241 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200242 sizeof(struct usb_endpoint_descriptor),
243 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530244 .bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200245 .bmAttributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200246 USB_ENDPOINT_XFER_BULK,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200247 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200248 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
249 .bInterval = 0xFF,
250 },
251 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200252 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200253 sizeof(struct usb_endpoint_descriptor),
254 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530255 .bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200256 .bmAttributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200257 USB_ENDPOINT_XFER_BULK,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200258 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200259 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
260 .bInterval = 0xFF,
261 },
262 },
263 },
Wolfgang Denk386eda02006-06-14 18:14:56 +0200264};
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200265
266static struct rs232_emu rs232_desc={
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200267 .dter = 115200,
268 .stop_bits = 0x00,
269 .parity = 0x00,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200270 .data_bits = 0x08
wdenk232c1502004-03-12 00:14:09 +0000271};
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200272
273
274/*
275 * Static Generic Serial specific data
276 */
277
278
279struct gserial_config_desc {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200280
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200281 struct usb_configuration_descriptor configuration_desc;
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500282 struct usb_interface_descriptor interface_desc[NUM_GSERIAL_INTERFACES];
283 struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS];
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200284
285} __attribute__((packed));
286
Wolfgang Denk386eda02006-06-14 18:14:56 +0200287static struct gserial_config_desc
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200288gserial_configuration_descriptors[NUM_CONFIGS] ={
289 {
290 .configuration_desc ={
291 .bLength = sizeof(struct usb_configuration_descriptor),
292 .bDescriptorType = USB_DT_CONFIG,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200293 .wTotalLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200294 cpu_to_le16(sizeof(struct gserial_config_desc)),
295 .bNumInterfaces = NUM_GSERIAL_INTERFACES,
296 .bConfigurationValue = 1,
297 .iConfiguration = STR_CONFIG,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200298 .bmAttributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200299 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
300 .bMaxPower = USBTTY_MAXPOWER
301 },
302 .interface_desc = {
303 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200304 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200305 sizeof(struct usb_interface_descriptor),
306 .bDescriptorType = USB_DT_INTERFACE,
307 .bInterfaceNumber = 0,
308 .bAlternateSetting = 0,
309 .bNumEndpoints = NUM_ENDPOINTS,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200310 .bInterfaceClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200311 COMMUNICATIONS_INTERFACE_CLASS_VENDOR,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200312 .bInterfaceSubClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200313 COMMUNICATIONS_NO_SUBCLASS,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200314 .bInterfaceProtocol =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200315 COMMUNICATIONS_NO_PROTOCOL,
316 .iInterface = STR_DATA_INTERFACE
317 },
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200318 },
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200319 .data_endpoints = {
320 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200321 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200322 sizeof(struct usb_endpoint_descriptor),
323 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530324 .bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200325 .bmAttributes = USB_ENDPOINT_XFER_BULK,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200326 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200327 cpu_to_le16(CONFIG_USBD_SERIAL_OUT_PKTSIZE),
328 .bInterval= 0xFF,
329 },
330 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200331 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200332 sizeof(struct usb_endpoint_descriptor),
333 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530334 .bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200335 .bmAttributes = USB_ENDPOINT_XFER_BULK,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200336 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200337 cpu_to_le16(CONFIG_USBD_SERIAL_IN_PKTSIZE),
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200338 .bInterval = 0xFF,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200339 },
340 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200341 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200342 sizeof(struct usb_endpoint_descriptor),
343 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530344 .bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200345 .bmAttributes = USB_ENDPOINT_XFER_INT,
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200346 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200347 cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
348 .bInterval = 0xFF,
349 },
350 },
351 },
wdenk232c1502004-03-12 00:14:09 +0000352};
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200353
354/*
355 * Static Function Prototypes
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);
Wolfgang Denk386eda02006-06-14 18:14:56 +0200364static int usbtty_cdc_setup(struct usb_device_request *request,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200365 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);
wdenk232c1502004-03-12 00:14:09 +0000371
372/* utility function for converting char* to wide string used by USB */
373static void str2wide (char *str, u16 * wide)
374{
375 int i;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200376 for (i = 0; i < strlen (str) && str[i]; i++){
Rodolfo Giometti18135122007-06-06 10:08:14 +0200377 #if defined(__LITTLE_ENDIAN)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200378 wide[i] = (u16) str[i];
Rodolfo Giometti18135122007-06-06 10:08:14 +0200379 #elif defined(__BIG_ENDIAN)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200380 wide[i] = ((u16)(str[i])<<8);
381 #else
Rodolfo Giometti18135122007-06-06 10:08:14 +0200382 #error "__LITTLE_ENDIAN or __BIG_ENDIAN undefined"
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200383 #endif
384 }
wdenk232c1502004-03-12 00:14:09 +0000385}
386
387/*
wdenk232c1502004-03-12 00:14:09 +0000388 * Test whether a character is in the RX buffer
389 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200390
wdenk232c1502004-03-12 00:14:09 +0000391int usbtty_tstc (void)
392{
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200393 struct usb_endpoint_instance *endpoint =
394 &endpoint_instance[rx_endpoint];
395
396 /* If no input data exists, allow more RX to be accepted */
397 if(usbtty_input.size <= 0){
398 udc_unset_nak(endpoint->endpoint_address&0x03);
399 }
400
wdenk232c1502004-03-12 00:14:09 +0000401 usbtty_poll ();
402 return (usbtty_input.size > 0);
403}
404
405/*
406 * Read a single byte from the usb client port. Returns 1 on success, 0
407 * otherwise. When the function is succesfull, the character read is
408 * written into its argument c.
409 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200410
wdenk232c1502004-03-12 00:14:09 +0000411int usbtty_getc (void)
412{
413 char c;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200414 struct usb_endpoint_instance *endpoint =
415 &endpoint_instance[rx_endpoint];
wdenk232c1502004-03-12 00:14:09 +0000416
417 while (usbtty_input.size <= 0) {
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200418 udc_unset_nak(endpoint->endpoint_address&0x03);
wdenk232c1502004-03-12 00:14:09 +0000419 usbtty_poll ();
420 }
421
422 buf_pop (&usbtty_input, &c, 1);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200423 udc_set_nak(endpoint->endpoint_address&0x03);
424
wdenk232c1502004-03-12 00:14:09 +0000425 return c;
426}
427
428/*
429 * Output a single byte to the usb client port.
430 */
431void usbtty_putc (const char c)
432{
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500433 if (!usbtty_configured ())
434 return;
435
wdenk232c1502004-03-12 00:14:09 +0000436 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
wdenk232c1502004-03-12 00:14:09 +0000447/* usbtty_puts() helper function for finding the next '\n' in a string */
448static 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/*
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200460 * Output a string to the usb client port - implementing flow control
wdenk232c1502004-03-12 00:14:09 +0000461 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200462
wdenk232c1502004-03-12 00:14:09 +0000463static 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) {
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200470 usbtty_poll ();
471
wdenk232c1502004-03-12 00:14:09 +0000472 space = maxlen - usbtty_output.size;
wdenk232c1502004-03-12 00:14:09 +0000473 /* Empty buffer here, if needed, to ensure space... */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200474 if (space) {
wdenk232c1502004-03-12 00:14:09 +0000475 write_buffer (&usbtty_output);
Wolfgang Denk386eda02006-06-14 18:14:56 +0200476
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200477 n = MIN (space, MIN (len, maxlen));
478 buf_push (&usbtty_output, str, n);
479
480 str += n;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200481 len -= n;
wdenk232c1502004-03-12 00:14:09 +0000482 }
wdenk232c1502004-03-12 00:14:09 +0000483 }
484}
485
486void usbtty_puts (const char *str)
487{
488 int n;
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500489 int len;
wdenk232c1502004-03-12 00:14:09 +0000490
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500491 if (!usbtty_configured ())
492 return;
493
494 len = strlen (str);
wdenk232c1502004-03-12 00:14:09 +0000495 /* 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;
wdenk6629d2f2004-03-12 15:38:25 +0000522 char * sn;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200523 char * tt;
wdenk6629d2f2004-03-12 15:38:25 +0000524 int snlen;
wdenk42dfe7a2004-03-14 22:25:36 +0000525
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200526 /* Ger seiral number */
wdenk6629d2f2004-03-12 15:38:25 +0000527 if (!(sn = getenv("serial#"))) {
528 sn = "000000000000";
529 }
530 snlen = strlen(sn);
531 if (snlen > sizeof(serial_number) - 1) {
Wolfgang Denkb64f1902008-07-14 15:06:35 +0200532 printf ("Warning: serial number %s is too long (%d > %lu)\n",
533 sn, snlen, (ulong)(sizeof(serial_number) - 1));
wdenk6629d2f2004-03-12 15:38:25 +0000534 snlen = sizeof(serial_number) - 1;
535 }
536 memcpy (serial_number, sn, snlen);
537 serial_number[snlen] = '\0';
wdenk232c1502004-03-12 00:14:09 +0000538
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200539 /* 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"));
Wolfgang Denk386eda02006-06-14 18:14:56 +0200546
wdenk232c1502004-03-12 00:14:09 +0000547 /* 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
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200557 udc_startup_events (device_instance);/* Enable dev, init udc pointers */
wdenk232c1502004-03-12 00:14:09 +0000558 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
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200573 rc = stdio_register (&usbttydev);
wdenk232c1502004-03-12 00:14:09 +0000574
575 return (rc == 0) ? 1 : rc;
576}
577
578static void usbtty_init_strings (void)
579{
580 struct usb_string_descriptor *string;
581
Wolfgang Denk386eda02006-06-14 18:14:56 +0200582 usbtty_string_table[STR_LANG] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200583 (struct usb_string_descriptor*)wstrLang;
584
wdenk232c1502004-03-12 00:14:09 +0000585 string = (struct usb_string_descriptor *) wstrManufacturer;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200586 string->bLength = sizeof(wstrManufacturer);
wdenk232c1502004-03-12 00:14:09 +0000587 string->bDescriptorType = USB_DT_STRING;
588 str2wide (CONFIG_USBD_MANUFACTURER, string->wData);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200589 usbtty_string_table[STR_MANUFACTURER]=string;
590
wdenk232c1502004-03-12 00:14:09 +0000591
592 string = (struct usb_string_descriptor *) wstrProduct;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200593 string->bLength = sizeof(wstrProduct);
wdenk232c1502004-03-12 00:14:09 +0000594 string->bDescriptorType = USB_DT_STRING;
595 str2wide (CONFIG_USBD_PRODUCT_NAME, string->wData);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200596 usbtty_string_table[STR_PRODUCT]=string;
597
wdenk232c1502004-03-12 00:14:09 +0000598
599 string = (struct usb_string_descriptor *) wstrSerial;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200600 string->bLength = sizeof(serial_number);
wdenk232c1502004-03-12 00:14:09 +0000601 string->bDescriptorType = USB_DT_STRING;
wdenk6629d2f2004-03-12 15:38:25 +0000602 str2wide (serial_number, string->wData);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200603 usbtty_string_table[STR_SERIAL]=string;
604
wdenk232c1502004-03-12 00:14:09 +0000605
606 string = (struct usb_string_descriptor *) wstrConfiguration;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200607 string->bLength = sizeof(wstrConfiguration);
wdenk232c1502004-03-12 00:14:09 +0000608 string->bDescriptorType = USB_DT_STRING;
609 str2wide (CONFIG_USBD_CONFIGURATION_STR, string->wData);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200610 usbtty_string_table[STR_CONFIG]=string;
wdenk232c1502004-03-12 00:14:09 +0000611
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200612
613 string = (struct usb_string_descriptor *) wstrDataInterface;
614 string->bLength = sizeof(wstrDataInterface);
wdenk232c1502004-03-12 00:14:09 +0000615 string->bDescriptorType = USB_DT_STRING;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200616 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;
wdenk232c1502004-03-12 00:14:09 +0000624
625 /* Now, initialize the string table for ep0 handling */
626 usb_strings = usbtty_string_table;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200627}
wdenk232c1502004-03-12 00:14:09 +0000628
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;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200638 device_instance->cdc_recv_setup = usbtty_cdc_setup;
wdenk232c1502004-03-12 00:14:09 +0000639 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;
wdenk6629d2f2004-03-12 15:38:25 +0000649 bus_instance->serial_number_str = serial_number;
wdenk232c1502004-03-12 00:14:09 +0000650
651 /* configuration instance */
652 memset (config_instance, 0,
653 sizeof (struct usb_configuration_instance));
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200654 config_instance->interfaces = interface_count;
655 config_instance->configuration_descriptor = configuration_descriptor;
wdenk232c1502004-03-12 00:14:09 +0000656 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 =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200686 ep_descriptor_ptrs[i - 1]->bEndpointAddress;
687
688 endpoint_instance[i].rcv_attributes =
689 ep_descriptor_ptrs[i - 1]->bmAttributes;
wdenk232c1502004-03-12 00:14:09 +0000690
691 endpoint_instance[i].rcv_packetSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200692 le16_to_cpu(ep_descriptor_ptrs[i - 1]->wMaxPacketSize);
Wolfgang Denk386eda02006-06-14 18:14:56 +0200693
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200694 endpoint_instance[i].tx_attributes =
695 ep_descriptor_ptrs[i - 1]->bmAttributes;
wdenk232c1502004-03-12 00:14:09 +0000696
697 endpoint_instance[i].tx_packetSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200698 le16_to_cpu(ep_descriptor_ptrs[i - 1]->wMaxPacketSize);
699
wdenk232c1502004-03-12 00:14:09 +0000700 endpoint_instance[i].tx_attributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200701 ep_descriptor_ptrs[i - 1]->bmAttributes;
wdenk232c1502004-03-12 00:14:09 +0000702
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;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200724 for (i = 1; i <= NUM_ENDPOINTS; i++) {
wdenk232c1502004-03-12 00:14:09 +0000725 udc_setup_ep (device_instance, i, &endpoint_instance[i]);
726 }
727}
728
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200729/* usbtty_init_terminal_type
Wolfgang Denk386eda02006-06-14 18:14:56 +0200730 *
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200731 * Do some late binding for our device type.
732 */
733static void usbtty_init_terminal_type(short type)
734{
735 switch(type){
Wolfgang Denk386eda02006-06-14 18:14:56 +0200736 /* CDC ACM */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200737 case 0:
738 /* Assign endpoint descriptors */
Wolfgang Denk386eda02006-06-14 18:14:56 +0200739 ep_descriptor_ptrs[0] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200740 &acm_configuration_descriptors[0].notification_endpoint;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200741 ep_descriptor_ptrs[1] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200742 &acm_configuration_descriptors[0].data_endpoints[0];
Wolfgang Denk386eda02006-06-14 18:14:56 +0200743 ep_descriptor_ptrs[2] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200744 &acm_configuration_descriptors[0].data_endpoints[1];
wdenk232c1502004-03-12 00:14:09 +0000745
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200746 /* Enumerate Device Descriptor */
Wolfgang Denk386eda02006-06-14 18:14:56 +0200747 device_descriptor.bDeviceClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200748 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;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200755
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200756 /* 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;
764
765 /* BULK IN/OUT & Default */
766 case 1:
767 default:
768 /* Assign endpoint descriptors */
Wolfgang Denk386eda02006-06-14 18:14:56 +0200769 ep_descriptor_ptrs[0] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200770 &gserial_configuration_descriptors[0].data_endpoints[0];
Wolfgang Denk386eda02006-06-14 18:14:56 +0200771 ep_descriptor_ptrs[1] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200772 &gserial_configuration_descriptors[0].data_endpoints[1];
Wolfgang Denk386eda02006-06-14 18:14:56 +0200773 ep_descriptor_ptrs[2] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200774 &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 */
Wolfgang Denk386eda02006-06-14 18:14:56 +0200786 configuration_descriptor =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200787 (struct usb_configuration_descriptor*)
788 &gserial_configuration_descriptors;
789
790 /* Interface count */
791 interface_count = NUM_GSERIAL_INTERFACES;
792 break;
793 }
794}
795
796/******************************************************************************/
wdenk232c1502004-03-12 00:14:09 +0000797
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 }
Wolfgang Denk386eda02006-06-14 18:14:56 +0200835
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200836 struct usb_endpoint_instance *endpoint =
837 &endpoint_instance[tx_endpoint];
838 struct urb *current_urb = NULL;
839
840 current_urb = next_urb (device_instance, endpoint);
Wolfgang Denk386eda02006-06-14 18:14:56 +0200841 /* TX data still exists - send it now
842 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200843 if(endpoint->sent < current_urb->actual_length){
844 if(udc_endpoint_write (endpoint)){
845 /* Write pre-empted by RX */
846 return -1;
847 }
848 }
wdenk232c1502004-03-12 00:14:09 +0000849
850 if (buf->size) {
wdenk232c1502004-03-12 00:14:09 +0000851 char *dest;
852
853 int space_avail;
854 int popnum, popped;
855 int total = 0;
856
Wolfgang Denk386eda02006-06-14 18:14:56 +0200857 /* Break buffer into urb sized pieces,
858 * and link each to the endpoint
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200859 */
wdenk232c1502004-03-12 00:14:09 +0000860 while (buf->size > 0) {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200861
wdenk232c1502004-03-12 00:14:09 +0000862 if (!current_urb) {
863 TTYERR ("current_urb is NULL, buf->size %d\n",
864 buf->size);
865 return total;
866 }
867
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200868 dest = (char*)current_urb->buffer +
wdenk232c1502004-03-12 00:14:09 +0000869 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
Wolfgang Denk386eda02006-06-14 18:14:56 +0200884 /* If endpoint->last == 0, then transfers have
885 * not started on this endpoint
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200886 */
wdenk232c1502004-03-12 00:14:09 +0000887 if (endpoint->last == 0) {
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200888 if(udc_endpoint_write (endpoint)){
889 /* Write pre-empted by RX */
890 return -1;
891 }
wdenk232c1502004-03-12 00:14:09 +0000892 }
893
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200894 }/* end while */
wdenk232c1502004-03-12 00:14:09 +0000895 return total;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200896 }
wdenk232c1502004-03-12 00:14:09 +0000897
898 return 0;
899}
900
901static int fill_buffer (circbuf_t * buf)
902{
903 struct usb_endpoint_instance *endpoint =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200904 &endpoint_instance[rx_endpoint];
wdenk232c1502004-03-12 00:14:09 +0000905
906 if (endpoint->rcv_urb && endpoint->rcv_urb->actual_length) {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200907 unsigned int nb = 0;
wdenk232c1502004-03-12 00:14:09 +0000908 char *src = (char *) endpoint->rcv_urb->buffer;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200909 unsigned int rx_avail = buf->totalsize - buf->size;
wdenk232c1502004-03-12 00:14:09 +0000910
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200911 if(rx_avail >= endpoint->rcv_urb->actual_length){
wdenk232c1502004-03-12 00:14:09 +0000912
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200913 nb = endpoint->rcv_urb->actual_length;
914 buf_push (buf, src, nb);
915 endpoint->rcv_urb->actual_length = 0;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200916
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200917 }
wdenk232c1502004-03-12 00:14:09 +0000918 return nb;
919 }
wdenk232c1502004-03-12 00:14:09 +0000920 return 0;
921}
922
923static int usbtty_configured (void)
924{
925 return usbtty_configured_flag;
926}
927
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200928/******************************************************************************/
wdenk232c1502004-03-12 00:14:09 +0000929
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
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200950/******************************************************************************/
wdenk232c1502004-03-12 00:14:09 +0000951
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200952int usbtty_cdc_setup(struct usb_device_request *request, struct urb *urb)
953{
954 switch (request->bRequest){
955
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200956 case ACM_SET_CONTROL_LINE_STATE: /* Implies DTE ready */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200957 break;
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200958 case ACM_SEND_ENCAPSULATED_COMMAND : /* Required */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200959 break;
960 case ACM_SET_LINE_ENCODING : /* DTE stop/parity bits
Wolfgang Denk386eda02006-06-14 18:14:56 +0200961 * per character */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200962 break;
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200963 case ACM_GET_ENCAPSULATED_RESPONSE : /* request response */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200964 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;
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200971 default:
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200972 return 1;
973 }
974 return 0;
975}
976
977/******************************************************************************/
wdenk232c1502004-03-12 00:14:09 +0000978
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? */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200987 udc_irq();
wdenk232c1502004-03-12 00:14:09 +0000988
Wolfgang Denk386eda02006-06-14 18:14:56 +0200989 /* Write any output data to host buffer
990 * (do this before checking interrupts to avoid missing one)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200991 */
wdenk232c1502004-03-12 00:14:09 +0000992 if (usbtty_configured ()) {
993 write_buffer (&usbtty_output);
994 }
995
996 /* New interrupts? */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200997 udc_irq();
Wolfgang Denk386eda02006-06-14 18:14:56 +0200998
999 /* Check for new data from host..
1000 * (do this after checking interrupts to get latest data)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001001 */
wdenk232c1502004-03-12 00:14:09 +00001002 if (usbtty_configured ()) {
1003 fill_buffer (&usbtty_input);
1004 }
1005
1006 /* New interrupts? */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001007 udc_irq();
1008
wdenk232c1502004-03-12 00:14:09 +00001009}