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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
wdenk232c1502004-03-12 00:14:09 +00002/*
3 * (C) Copyright 2003
4 * Gerry Hamel, geh@ti.com, Texas Instruments
Wolfgang Denk386eda02006-06-14 18:14:56 +02005 *
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02006 * (C) Copyright 2006
7 * Bryan O'Donoghue, bodonoghue@codehermit.ie
wdenk232c1502004-03-12 00:14:09 +00008 */
9
10#include <common.h>
Jean-Christophe PLAGNIOL-VILLARDdedacc12008-12-07 09:45:35 +010011#include <config.h>
wdenk232c1502004-03-12 00:14:09 +000012#include <circbuf.h>
Simon Glass7b51b572019-08-01 09:46:52 -060013#include <env.h>
Simon Glass2310c8e2019-11-14 12:57:22 -070014#include <serial.h>
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020015#include <stdio_dev.h>
Tom Rinib2fb47f2011-12-15 08:40:51 -070016#include <asm/unaligned.h>
wdenk232c1502004-03-12 00:14:09 +000017#include "usbtty.h"
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020018#include "usb_cdc_acm.h"
19#include "usbdescriptors.h"
wdenk232c1502004-03-12 00:14:09 +000020
Jean-Christophe PLAGNIOL-VILLARDdedacc12008-12-07 09:45:35 +010021#ifdef DEBUG
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020022#define TTYDBG(fmt,args...)\
23 serial_printf("[%s] %s %d: "fmt, __FILE__,__FUNCTION__,__LINE__,##args)
wdenk232c1502004-03-12 00:14:09 +000024#else
25#define TTYDBG(fmt,args...) do{}while(0)
26#endif
27
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020028#if 1
29#define TTYERR(fmt,args...)\
30 serial_printf("ERROR![%s] %s %d: "fmt, __FILE__,__FUNCTION__,\
31 __LINE__,##args)
wdenk232c1502004-03-12 00:14:09 +000032#else
33#define TTYERR(fmt,args...) do{}while(0)
34#endif
35
36/*
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020037 * Defines
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/*
wdenk232c1502004-03-12 00:14:09 +000052 * Buffers to hold input and output data
53 */
Shiraz Hashimb2caefb2012-12-17 14:19:37 +053054#define USBTTY_BUFFER_SIZE 2048
wdenk232c1502004-03-12 00:14:09 +000055static circbuf_t usbtty_input;
56static circbuf_t usbtty_output;
57
58
59/*
60 * Instance variables
61 */
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +020062static struct stdio_dev usbttydev;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020063static struct usb_device_instance device_instance[1];
64static struct usb_bus_instance bus_instance[1];
wdenk232c1502004-03-12 00:14:09 +000065static struct usb_configuration_instance config_instance[NUM_CONFIGS];
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020066static struct usb_interface_instance interface_instance[MAX_INTERFACES];
67static struct usb_alternate_instance alternate_instance[MAX_INTERFACES];
68/* one extra for control endpoint */
69static struct usb_endpoint_instance endpoint_instance[NUM_ENDPOINTS+1];
wdenk232c1502004-03-12 00:14:09 +000070
71/*
72 * Global flag
73 */
74int usbtty_configured_flag = 0;
75
wdenk232c1502004-03-12 00:14:09 +000076/*
wdenk6629d2f2004-03-12 15:38:25 +000077 * Serial number
78 */
79static char serial_number[16];
80
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020081
wdenk6629d2f2004-03-12 15:38:25 +000082/*
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020083 * Descriptors, Strings, Local variables.
wdenk232c1502004-03-12 00:14:09 +000084 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020085
Jean-Christophe PLAGNIOL-VILLARD2731b9a2009-04-03 12:46:58 +020086/* defined and used by gadget/ep0.c */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +020087extern struct usb_string_descriptor **usb_strings;
88
89/* Indicies, References */
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/* USB Descriptor Strings */
wdenk232c1502004-03-12 00:14:09 +000096static 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)];
wdenk6629d2f2004-03-12 15:38:25 +000099static u8 wstrSerial[2 + 2*(sizeof(serial_number) - 1)];
wdenk232c1502004-03-12 00:14:09 +0000100static u8 wstrConfiguration[2 + 2*(sizeof(CONFIG_USBD_CONFIGURATION_STR)-1)];
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200101static u8 wstrDataInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
102static u8 wstrCtrlInterface[2 + 2*(sizeof(CONFIG_USBD_DATA_INTERFACE_STR)-1)];
wdenk232c1502004-03-12 00:14:09 +0000103
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200104/* Standard USB Data Structures */
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;
wdenk232c1502004-03-12 00:14:09 +0000108static struct usb_device_descriptor device_descriptor = {
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200109 .bLength = sizeof(struct usb_device_descriptor),
110 .bDescriptorType = USB_DT_DEVICE,
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200111 .bcdUSB = cpu_to_le16(USB_BCD_VERSION),
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200112 .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
wdenk232c1502004-03-12 00:14:09 +0000121};
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200122
123
Vipin KUMARf9da0f82012-03-26 15:38:06 +0530124#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
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200137/*
138 * Static CDC ACM specific descriptors
139 */
140
141struct acm_config_desc {
142 struct usb_configuration_descriptor configuration_desc;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200143
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200144 /* Master Interface */
145 struct usb_interface_descriptor interface_desc;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200146
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200147 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 /* Slave Interface */
154 struct usb_interface_descriptor data_class_interface;
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500155 struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS-1];
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200156} __attribute__((packed));
157
158static struct acm_config_desc acm_configuration_descriptors[NUM_CONFIGS] = {
159 {
160 .configuration_desc ={
Wolfgang Denk386eda02006-06-14 18:14:56 +0200161 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200162 sizeof(struct usb_configuration_descriptor),
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200163 .bDescriptorType = USB_DT_CONFIG,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200164 .wTotalLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200165 cpu_to_le16(sizeof(struct acm_config_desc)),
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200166 .bNumInterfaces = NUM_ACM_INTERFACES,
167 .bConfigurationValue = 1,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200168 .iConfiguration = STR_CONFIG,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200169 .bmAttributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200170 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
171 .bMaxPower = USBTTY_MAXPOWER
172 },
173 /* Interface 1 */
174 .interface_desc = {
175 .bLength = sizeof(struct usb_interface_descriptor),
176 .bDescriptorType = USB_DT_INTERFACE,
177 .bInterfaceNumber = 0,
178 .bAlternateSetting = 0,
179 .bNumEndpoints = 0x01,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200180 .bInterfaceClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200181 COMMUNICATIONS_INTERFACE_CLASS_CONTROL,
182 .bInterfaceSubClass = COMMUNICATIONS_ACM_SUBCLASS,
183 .bInterfaceProtocol = COMMUNICATIONS_V25TER_PROTOCOL,
184 .iInterface = STR_CTRL_INTERFACE,
185 },
186 .usb_class_header = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200187 .bFunctionLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200188 sizeof(struct usb_class_header_function_descriptor),
Wolfgang Denk386eda02006-06-14 18:14:56 +0200189 .bDescriptorType = CS_INTERFACE,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200190 .bDescriptorSubtype = USB_ST_HEADER,
191 .bcdCDC = cpu_to_le16(110),
192 },
193 .usb_class_call_mgt = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200194 .bFunctionLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200195 sizeof(struct usb_class_call_management_descriptor),
196 .bDescriptorType = CS_INTERFACE,
197 .bDescriptorSubtype = USB_ST_CMF,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200198 .bmCapabilities = 0x00,
199 .bDataInterface = 0x01,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200200 },
201 .usb_class_acm = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200202 .bFunctionLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200203 sizeof(struct usb_class_abstract_control_descriptor),
204 .bDescriptorType = CS_INTERFACE,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200205 .bDescriptorSubtype = USB_ST_ACMF,
206 .bmCapabilities = 0x00,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200207 },
208 .usb_class_union = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200209 .bFunctionLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200210 sizeof(struct usb_class_union_function_descriptor),
211 .bDescriptorType = CS_INTERFACE,
212 .bDescriptorSubtype = USB_ST_UF,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200213 .bMasterInterface = 0x00,
214 .bSlaveInterface0 = 0x01,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200215 },
216 .notification_endpoint = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200217 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200218 sizeof(struct usb_endpoint_descriptor),
219 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530220 .bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200221 .bmAttributes = USB_ENDPOINT_XFER_INT,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200222 .wMaxPacketSize
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200223 = cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
224 .bInterval = 0xFF,
225 },
226
227 /* Interface 2 */
228 .data_class_interface = {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200229 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200230 sizeof(struct usb_interface_descriptor),
231 .bDescriptorType = USB_DT_INTERFACE,
232 .bInterfaceNumber = 0x01,
233 .bAlternateSetting = 0x00,
234 .bNumEndpoints = 0x02,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200235 .bInterfaceClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200236 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 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200243 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200244 sizeof(struct usb_endpoint_descriptor),
245 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530246 .bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200247 .bmAttributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200248 USB_ENDPOINT_XFER_BULK,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200249 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200250 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
251 .bInterval = 0xFF,
252 },
253 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200254 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200255 sizeof(struct usb_endpoint_descriptor),
256 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530257 .bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200258 .bmAttributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200259 USB_ENDPOINT_XFER_BULK,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200260 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200261 cpu_to_le16(CONFIG_USBD_SERIAL_BULK_PKTSIZE),
262 .bInterval = 0xFF,
263 },
264 },
265 },
Wolfgang Denk386eda02006-06-14 18:14:56 +0200266};
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200267
268static struct rs232_emu rs232_desc={
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200269 .dter = 115200,
270 .stop_bits = 0x00,
271 .parity = 0x00,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200272 .data_bits = 0x08
wdenk232c1502004-03-12 00:14:09 +0000273};
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200274
275
276/*
277 * Static Generic Serial specific data
278 */
279
280
281struct gserial_config_desc {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200282
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200283 struct usb_configuration_descriptor configuration_desc;
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500284 struct usb_interface_descriptor interface_desc[NUM_GSERIAL_INTERFACES];
285 struct usb_endpoint_descriptor data_endpoints[NUM_ENDPOINTS];
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200286
287} __attribute__((packed));
288
Wolfgang Denk386eda02006-06-14 18:14:56 +0200289static struct gserial_config_desc
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200290gserial_configuration_descriptors[NUM_CONFIGS] ={
291 {
292 .configuration_desc ={
293 .bLength = sizeof(struct usb_configuration_descriptor),
294 .bDescriptorType = USB_DT_CONFIG,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200295 .wTotalLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200296 cpu_to_le16(sizeof(struct gserial_config_desc)),
297 .bNumInterfaces = NUM_GSERIAL_INTERFACES,
298 .bConfigurationValue = 1,
299 .iConfiguration = STR_CONFIG,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200300 .bmAttributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200301 BMATTRIBUTE_SELF_POWERED|BMATTRIBUTE_RESERVED,
302 .bMaxPower = USBTTY_MAXPOWER
303 },
304 .interface_desc = {
305 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200306 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200307 sizeof(struct usb_interface_descriptor),
308 .bDescriptorType = USB_DT_INTERFACE,
309 .bInterfaceNumber = 0,
310 .bAlternateSetting = 0,
311 .bNumEndpoints = NUM_ENDPOINTS,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200312 .bInterfaceClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200313 COMMUNICATIONS_INTERFACE_CLASS_VENDOR,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200314 .bInterfaceSubClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200315 COMMUNICATIONS_NO_SUBCLASS,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200316 .bInterfaceProtocol =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200317 COMMUNICATIONS_NO_PROTOCOL,
318 .iInterface = STR_DATA_INTERFACE
319 },
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200320 },
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200321 .data_endpoints = {
322 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200323 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200324 sizeof(struct usb_endpoint_descriptor),
325 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530326 .bEndpointAddress = UDC_OUT_ENDPOINT | USB_DIR_OUT,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200327 .bmAttributes = USB_ENDPOINT_XFER_BULK,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200328 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200329 cpu_to_le16(CONFIG_USBD_SERIAL_OUT_PKTSIZE),
330 .bInterval= 0xFF,
331 },
332 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200333 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200334 sizeof(struct usb_endpoint_descriptor),
335 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530336 .bEndpointAddress = UDC_IN_ENDPOINT | USB_DIR_IN,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200337 .bmAttributes = USB_ENDPOINT_XFER_BULK,
Wolfgang Denk386eda02006-06-14 18:14:56 +0200338 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200339 cpu_to_le16(CONFIG_USBD_SERIAL_IN_PKTSIZE),
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200340 .bInterval = 0xFF,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200341 },
342 {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200343 .bLength =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200344 sizeof(struct usb_endpoint_descriptor),
345 .bDescriptorType = USB_DT_ENDPOINT,
Vivek Kutal9e78dae2009-02-23 21:35:11 +0530346 .bEndpointAddress = UDC_INT_ENDPOINT | USB_DIR_IN,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200347 .bmAttributes = USB_ENDPOINT_XFER_INT,
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200348 .wMaxPacketSize =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200349 cpu_to_le16(CONFIG_USBD_SERIAL_INT_PKTSIZE),
350 .bInterval = 0xFF,
351 },
352 },
353 },
wdenk232c1502004-03-12 00:14:09 +0000354};
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200355
356/*
357 * Static Function Prototypes
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);
Wolfgang Denk386eda02006-06-14 18:14:56 +0200366static int usbtty_cdc_setup(struct usb_device_request *request,
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200367 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);
wdenk232c1502004-03-12 00:14:09 +0000373
374/* utility function for converting char* to wide string used by USB */
375static void str2wide (char *str, u16 * wide)
376{
377 int i;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200378 for (i = 0; i < strlen (str) && str[i]; i++){
Rodolfo Giometti18135122007-06-06 10:08:14 +0200379 #if defined(__LITTLE_ENDIAN)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200380 wide[i] = (u16) str[i];
Rodolfo Giometti18135122007-06-06 10:08:14 +0200381 #elif defined(__BIG_ENDIAN)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200382 wide[i] = ((u16)(str[i])<<8);
383 #else
Rodolfo Giometti18135122007-06-06 10:08:14 +0200384 #error "__LITTLE_ENDIAN or __BIG_ENDIAN undefined"
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200385 #endif
386 }
wdenk232c1502004-03-12 00:14:09 +0000387}
388
389/*
wdenk232c1502004-03-12 00:14:09 +0000390 * Test whether a character is in the RX buffer
391 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200392
Simon Glass709ea542014-07-23 06:54:59 -0600393int usbtty_tstc(struct stdio_dev *dev)
wdenk232c1502004-03-12 00:14:09 +0000394{
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200395 struct usb_endpoint_instance *endpoint =
396 &endpoint_instance[rx_endpoint];
397
398 /* If no input data exists, allow more RX to be accepted */
399 if(usbtty_input.size <= 0){
400 udc_unset_nak(endpoint->endpoint_address&0x03);
401 }
402
wdenk232c1502004-03-12 00:14:09 +0000403 usbtty_poll ();
404 return (usbtty_input.size > 0);
405}
406
407/*
408 * Read a single byte from the usb client port. Returns 1 on success, 0
409 * otherwise. When the function is succesfull, the character read is
410 * written into its argument c.
411 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200412
Simon Glass709ea542014-07-23 06:54:59 -0600413int usbtty_getc(struct stdio_dev *dev)
wdenk232c1502004-03-12 00:14:09 +0000414{
415 char c;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200416 struct usb_endpoint_instance *endpoint =
417 &endpoint_instance[rx_endpoint];
wdenk232c1502004-03-12 00:14:09 +0000418
419 while (usbtty_input.size <= 0) {
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200420 udc_unset_nak(endpoint->endpoint_address&0x03);
wdenk232c1502004-03-12 00:14:09 +0000421 usbtty_poll ();
422 }
423
424 buf_pop (&usbtty_input, &c, 1);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200425 udc_set_nak(endpoint->endpoint_address&0x03);
426
wdenk232c1502004-03-12 00:14:09 +0000427 return c;
428}
429
430/*
431 * Output a single byte to the usb client port.
432 */
Simon Glass709ea542014-07-23 06:54:59 -0600433void usbtty_putc(struct stdio_dev *dev, const char c)
wdenk232c1502004-03-12 00:14:09 +0000434{
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500435 if (!usbtty_configured ())
436 return;
437
wdenk232c1502004-03-12 00:14:09 +0000438 /* If \n, also do \r */
439 if (c == '\n')
440 buf_push (&usbtty_output, "\r", 1);
441
Alison Wang055457e2016-03-02 11:00:37 +0800442 buf_push(&usbtty_output, &c, 1);
443
wdenk232c1502004-03-12 00:14:09 +0000444 /* Poll at end to handle new data... */
445 if ((usbtty_output.size + 2) >= usbtty_output.totalsize) {
446 usbtty_poll ();
447 }
448}
449
wdenk232c1502004-03-12 00:14:09 +0000450/* usbtty_puts() helper function for finding the next '\n' in a string */
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/*
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200463 * Output a string to the usb client port - implementing flow control
wdenk232c1502004-03-12 00:14:09 +0000464 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200465
wdenk232c1502004-03-12 00:14:09 +0000466static void __usbtty_puts (const char *str, int len)
467{
468 int maxlen = usbtty_output.totalsize;
469 int space, n;
470
471 /* break str into chunks < buffer size, if needed */
472 while (len > 0) {
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200473 usbtty_poll ();
474
wdenk232c1502004-03-12 00:14:09 +0000475 space = maxlen - usbtty_output.size;
wdenk232c1502004-03-12 00:14:09 +0000476 /* Empty buffer here, if needed, to ensure space... */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200477 if (space) {
wdenk232c1502004-03-12 00:14:09 +0000478 write_buffer (&usbtty_output);
Wolfgang Denk386eda02006-06-14 18:14:56 +0200479
Masahiro Yamadac79cba32014-09-18 13:28:06 +0900480 n = min(space, min(len, maxlen));
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200481 buf_push (&usbtty_output, str, n);
482
483 str += n;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200484 len -= n;
wdenk232c1502004-03-12 00:14:09 +0000485 }
wdenk232c1502004-03-12 00:14:09 +0000486 }
487}
488
Simon Glass709ea542014-07-23 06:54:59 -0600489void usbtty_puts(struct stdio_dev *dev, const char *str)
wdenk232c1502004-03-12 00:14:09 +0000490{
491 int n;
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500492 int len;
wdenk232c1502004-03-12 00:14:09 +0000493
Atin Malaviyaf3c0de62009-02-03 15:17:10 -0500494 if (!usbtty_configured ())
495 return;
496
497 len = strlen (str);
wdenk232c1502004-03-12 00:14:09 +0000498 /* add '\r' for each '\n' */
499 while (len > 0) {
500 n = next_nl_pos (str);
501
502 if (str[n] == '\n') {
Alison Wang055457e2016-03-02 11:00:37 +0800503 __usbtty_puts("\r", 1);
504 __usbtty_puts(str, n + 1);
wdenk232c1502004-03-12 00:14:09 +0000505 str += (n + 1);
506 len -= (n + 1);
507 } else {
508 /* No \n found. All done. */
509 __usbtty_puts (str, n);
510 break;
511 }
512 }
513
514 /* Poll at end to handle new data... */
515 usbtty_poll ();
516}
517
518/*
519 * Initialize the usb client port.
520 *
521 */
522int drv_usbtty_init (void)
523{
524 int rc;
wdenk6629d2f2004-03-12 15:38:25 +0000525 char * sn;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200526 char * tt;
wdenk6629d2f2004-03-12 15:38:25 +0000527 int snlen;
wdenk42dfe7a2004-03-14 22:25:36 +0000528
Heinrich Schuchardtc4093362017-10-12 23:37:37 +0200529 /* Get serial number */
Simon Glass00caae62017-08-03 12:22:12 -0600530 sn = env_get("serial#");
531 if (!sn)
wdenk6629d2f2004-03-12 15:38:25 +0000532 sn = "000000000000";
wdenk6629d2f2004-03-12 15:38:25 +0000533 snlen = strlen(sn);
534 if (snlen > sizeof(serial_number) - 1) {
Wolfgang Denkb64f1902008-07-14 15:06:35 +0200535 printf ("Warning: serial number %s is too long (%d > %lu)\n",
536 sn, snlen, (ulong)(sizeof(serial_number) - 1));
wdenk6629d2f2004-03-12 15:38:25 +0000537 snlen = sizeof(serial_number) - 1;
538 }
539 memcpy (serial_number, sn, snlen);
540 serial_number[snlen] = '\0';
wdenk232c1502004-03-12 00:14:09 +0000541
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200542 /* Decide on which type of UDC device to be.
543 */
Simon Glass00caae62017-08-03 12:22:12 -0600544 tt = env_get("usbtty");
545 if (!tt)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200546 tt = "generic";
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200547 usbtty_init_terminal_type(strcmp(tt,"cdc_acm"));
Wolfgang Denk386eda02006-06-14 18:14:56 +0200548
wdenk232c1502004-03-12 00:14:09 +0000549 /* prepare buffers... */
550 buf_init (&usbtty_input, USBTTY_BUFFER_SIZE);
551 buf_init (&usbtty_output, USBTTY_BUFFER_SIZE);
552
553 /* Now, set up USB controller and infrastructure */
554 udc_init (); /* Basic USB initialization */
555
556 usbtty_init_strings ();
557 usbtty_init_instances ();
558
Stefan Herbrechtsmeier241d9a62011-10-17 17:22:49 +0200559 usbtty_init_endpoints ();
560
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200561 udc_startup_events (device_instance);/* Enable dev, init udc pointers */
wdenk232c1502004-03-12 00:14:09 +0000562 udc_connect (); /* Enable pullup for host detection */
563
wdenk232c1502004-03-12 00:14:09 +0000564 /* Device initialization */
565 memset (&usbttydev, 0, sizeof (usbttydev));
566
567 strcpy (usbttydev.name, "usbtty");
568 usbttydev.ext = 0; /* No extensions */
569 usbttydev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_OUTPUT;
570 usbttydev.tstc = usbtty_tstc; /* 'tstc' function */
571 usbttydev.getc = usbtty_getc; /* 'getc' function */
572 usbttydev.putc = usbtty_putc; /* 'putc' function */
573 usbttydev.puts = usbtty_puts; /* 'puts' function */
574
Jean-Christophe PLAGNIOL-VILLARD52cb4d42009-05-16 12:14:54 +0200575 rc = stdio_register (&usbttydev);
wdenk232c1502004-03-12 00:14:09 +0000576
577 return (rc == 0) ? 1 : rc;
578}
579
580static void usbtty_init_strings (void)
581{
582 struct usb_string_descriptor *string;
583
Wolfgang Denk386eda02006-06-14 18:14:56 +0200584 usbtty_string_table[STR_LANG] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200585 (struct usb_string_descriptor*)wstrLang;
586
wdenk232c1502004-03-12 00:14:09 +0000587 string = (struct usb_string_descriptor *) wstrManufacturer;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200588 string->bLength = sizeof(wstrManufacturer);
wdenk232c1502004-03-12 00:14:09 +0000589 string->bDescriptorType = USB_DT_STRING;
590 str2wide (CONFIG_USBD_MANUFACTURER, string->wData);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200591 usbtty_string_table[STR_MANUFACTURER]=string;
592
wdenk232c1502004-03-12 00:14:09 +0000593
594 string = (struct usb_string_descriptor *) wstrProduct;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200595 string->bLength = sizeof(wstrProduct);
wdenk232c1502004-03-12 00:14:09 +0000596 string->bDescriptorType = USB_DT_STRING;
597 str2wide (CONFIG_USBD_PRODUCT_NAME, string->wData);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200598 usbtty_string_table[STR_PRODUCT]=string;
599
wdenk232c1502004-03-12 00:14:09 +0000600
601 string = (struct usb_string_descriptor *) wstrSerial;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200602 string->bLength = sizeof(serial_number);
wdenk232c1502004-03-12 00:14:09 +0000603 string->bDescriptorType = USB_DT_STRING;
wdenk6629d2f2004-03-12 15:38:25 +0000604 str2wide (serial_number, string->wData);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200605 usbtty_string_table[STR_SERIAL]=string;
606
wdenk232c1502004-03-12 00:14:09 +0000607
608 string = (struct usb_string_descriptor *) wstrConfiguration;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200609 string->bLength = sizeof(wstrConfiguration);
wdenk232c1502004-03-12 00:14:09 +0000610 string->bDescriptorType = USB_DT_STRING;
611 str2wide (CONFIG_USBD_CONFIGURATION_STR, string->wData);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200612 usbtty_string_table[STR_CONFIG]=string;
wdenk232c1502004-03-12 00:14:09 +0000613
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200614
615 string = (struct usb_string_descriptor *) wstrDataInterface;
616 string->bLength = sizeof(wstrDataInterface);
wdenk232c1502004-03-12 00:14:09 +0000617 string->bDescriptorType = USB_DT_STRING;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200618 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;
wdenk232c1502004-03-12 00:14:09 +0000626
627 /* Now, initialize the string table for ep0 handling */
628 usb_strings = usbtty_string_table;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200629}
wdenk232c1502004-03-12 00:14:09 +0000630
Tom Rinib2fb47f2011-12-15 08:40:51 -0700631#define init_wMaxPacketSize(x) le16_to_cpu(get_unaligned(\
632 &ep_descriptor_ptrs[(x) - 1]->wMaxPacketSize));
633
wdenk232c1502004-03-12 00:14:09 +0000634static void usbtty_init_instances (void)
635{
636 int i;
637
638 /* initialize device instance */
639 memset (device_instance, 0, sizeof (struct usb_device_instance));
640 device_instance->device_state = STATE_INIT;
641 device_instance->device_descriptor = &device_descriptor;
Vipin KUMARf9da0f82012-03-26 15:38:06 +0530642#if defined(CONFIG_USBD_HS)
643 device_instance->qualifier_descriptor = &qualifier_descriptor;
644#endif
wdenk232c1502004-03-12 00:14:09 +0000645 device_instance->event = usbtty_event_handler;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200646 device_instance->cdc_recv_setup = usbtty_cdc_setup;
wdenk232c1502004-03-12 00:14:09 +0000647 device_instance->bus = bus_instance;
648 device_instance->configurations = NUM_CONFIGS;
649 device_instance->configuration_instance_array = config_instance;
650
651 /* initialize bus instance */
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;
wdenk6629d2f2004-03-12 15:38:25 +0000657 bus_instance->serial_number_str = serial_number;
wdenk232c1502004-03-12 00:14:09 +0000658
659 /* configuration instance */
660 memset (config_instance, 0,
661 sizeof (struct usb_configuration_instance));
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200662 config_instance->interfaces = interface_count;
663 config_instance->configuration_descriptor = configuration_descriptor;
wdenk232c1502004-03-12 00:14:09 +0000664 config_instance->interface_instance_array = interface_instance;
665
666 /* interface instance */
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 /* alternates instance */
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 /* endpoint instances */
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 =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200694 ep_descriptor_ptrs[i - 1]->bEndpointAddress;
695
696 endpoint_instance[i].rcv_attributes =
697 ep_descriptor_ptrs[i - 1]->bmAttributes;
wdenk232c1502004-03-12 00:14:09 +0000698
Tom Rinib2fb47f2011-12-15 08:40:51 -0700699 endpoint_instance[i].rcv_packetSize = init_wMaxPacketSize(i);
Wolfgang Denk386eda02006-06-14 18:14:56 +0200700
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200701 endpoint_instance[i].tx_attributes =
702 ep_descriptor_ptrs[i - 1]->bmAttributes;
wdenk232c1502004-03-12 00:14:09 +0000703
Tom Rinib2fb47f2011-12-15 08:40:51 -0700704 endpoint_instance[i].tx_packetSize = init_wMaxPacketSize(i);
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200705
wdenk232c1502004-03-12 00:14:09 +0000706 endpoint_instance[i].tx_attributes =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200707 ep_descriptor_ptrs[i - 1]->bmAttributes;
wdenk232c1502004-03-12 00:14:09 +0000708
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;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200730 for (i = 1; i <= NUM_ENDPOINTS; i++) {
wdenk232c1502004-03-12 00:14:09 +0000731 udc_setup_ep (device_instance, i, &endpoint_instance[i]);
732 }
733}
734
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200735/* usbtty_init_terminal_type
Wolfgang Denk386eda02006-06-14 18:14:56 +0200736 *
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200737 * Do some late binding for our device type.
738 */
739static void usbtty_init_terminal_type(short type)
740{
741 switch(type){
Wolfgang Denk386eda02006-06-14 18:14:56 +0200742 /* CDC ACM */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200743 case 0:
744 /* Assign endpoint descriptors */
Wolfgang Denk386eda02006-06-14 18:14:56 +0200745 ep_descriptor_ptrs[0] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200746 &acm_configuration_descriptors[0].notification_endpoint;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200747 ep_descriptor_ptrs[1] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200748 &acm_configuration_descriptors[0].data_endpoints[0];
Wolfgang Denk386eda02006-06-14 18:14:56 +0200749 ep_descriptor_ptrs[2] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200750 &acm_configuration_descriptors[0].data_endpoints[1];
wdenk232c1502004-03-12 00:14:09 +0000751
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200752 /* Enumerate Device Descriptor */
Wolfgang Denk386eda02006-06-14 18:14:56 +0200753 device_descriptor.bDeviceClass =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200754 COMMUNICATIONS_DEVICE_CLASS;
755 device_descriptor.idProduct =
756 cpu_to_le16(CONFIG_USBD_PRODUCTID_CDCACM);
757
Vipin KUMARf9da0f82012-03-26 15:38:06 +0530758#if defined(CONFIG_USBD_HS)
759 qualifier_descriptor.bDeviceClass =
760 COMMUNICATIONS_DEVICE_CLASS;
761#endif
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200762 /* Assign endpoint indices */
763 tx_endpoint = ACM_TX_ENDPOINT;
764 rx_endpoint = ACM_RX_ENDPOINT;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200765
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200766 /* Configuration Descriptor */
767 configuration_descriptor =
768 (struct usb_configuration_descriptor*)
769 &acm_configuration_descriptors;
770
771 /* Interface count */
772 interface_count = NUM_ACM_INTERFACES;
773 break;
774
775 /* BULK IN/OUT & Default */
776 case 1:
777 default:
778 /* Assign endpoint descriptors */
Wolfgang Denk386eda02006-06-14 18:14:56 +0200779 ep_descriptor_ptrs[0] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200780 &gserial_configuration_descriptors[0].data_endpoints[0];
Wolfgang Denk386eda02006-06-14 18:14:56 +0200781 ep_descriptor_ptrs[1] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200782 &gserial_configuration_descriptors[0].data_endpoints[1];
Wolfgang Denk386eda02006-06-14 18:14:56 +0200783 ep_descriptor_ptrs[2] =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200784 &gserial_configuration_descriptors[0].data_endpoints[2];
785
786 /* Enumerate Device Descriptor */
787 device_descriptor.bDeviceClass = 0xFF;
788 device_descriptor.idProduct =
789 cpu_to_le16(CONFIG_USBD_PRODUCTID_GSERIAL);
Vipin KUMARf9da0f82012-03-26 15:38:06 +0530790#if defined(CONFIG_USBD_HS)
791 qualifier_descriptor.bDeviceClass = 0xFF;
792#endif
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200793 /* Assign endpoint indices */
794 tx_endpoint = GSERIAL_TX_ENDPOINT;
795 rx_endpoint = GSERIAL_RX_ENDPOINT;
796
797 /* Configuration Descriptor */
Wolfgang Denk386eda02006-06-14 18:14:56 +0200798 configuration_descriptor =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200799 (struct usb_configuration_descriptor*)
800 &gserial_configuration_descriptors;
801
802 /* Interface count */
803 interface_count = NUM_GSERIAL_INTERFACES;
804 break;
805 }
806}
807
808/******************************************************************************/
wdenk232c1502004-03-12 00:14:09 +0000809
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 /* If there's a queue, then we should add to the last urb */
817 if (!endpoint->tx_queue) {
818 current_urb = endpoint->tx_urb;
819 } else {
820 /* Last urb from tx chain */
821 current_urb =
822 p2surround (struct urb, link, endpoint->tx.prev);
823 }
824
825 /* Make sure this one has enough room */
826 space = current_urb->buffer_length - current_urb->actual_length;
827 if (space > 0) {
828 return current_urb;
829 } else { /* No space here */
830 /* First look at done list */
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 }
Wolfgang Denk386eda02006-06-14 18:14:56 +0200847
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200848 struct usb_endpoint_instance *endpoint =
849 &endpoint_instance[tx_endpoint];
850 struct urb *current_urb = NULL;
851
852 current_urb = next_urb (device_instance, endpoint);
xypron.glpk@gmx.de73be5b32017-04-15 15:05:46 +0200853
854 if (!current_urb) {
855 TTYERR ("current_urb is NULL, buf->size %d\n",
856 buf->size);
857 return 0;
858 }
859
Wolfgang Denk386eda02006-06-14 18:14:56 +0200860 /* TX data still exists - send it now
861 */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200862 if(endpoint->sent < current_urb->actual_length){
863 if(udc_endpoint_write (endpoint)){
864 /* Write pre-empted by RX */
865 return -1;
866 }
867 }
wdenk232c1502004-03-12 00:14:09 +0000868
869 if (buf->size) {
wdenk232c1502004-03-12 00:14:09 +0000870 char *dest;
871
872 int space_avail;
873 int popnum, popped;
874 int total = 0;
875
Wolfgang Denk386eda02006-06-14 18:14:56 +0200876 /* Break buffer into urb sized pieces,
877 * and link each to the endpoint
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200878 */
wdenk232c1502004-03-12 00:14:09 +0000879 while (buf->size > 0) {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200880
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200881 dest = (char*)current_urb->buffer +
wdenk232c1502004-03-12 00:14:09 +0000882 current_urb->actual_length;
883
884 space_avail =
885 current_urb->buffer_length -
886 current_urb->actual_length;
Masahiro Yamadab4141192014-11-07 03:03:31 +0900887 popnum = min(space_avail, (int)buf->size);
wdenk232c1502004-03-12 00:14:09 +0000888 if (popnum == 0)
889 break;
890
891 popped = buf_pop (buf, dest, popnum);
892 if (popped == 0)
893 break;
894 current_urb->actual_length += popped;
895 total += popped;
896
Wolfgang Denk386eda02006-06-14 18:14:56 +0200897 /* If endpoint->last == 0, then transfers have
898 * not started on this endpoint
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200899 */
wdenk232c1502004-03-12 00:14:09 +0000900 if (endpoint->last == 0) {
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200901 if(udc_endpoint_write (endpoint)){
902 /* Write pre-empted by RX */
903 return -1;
904 }
wdenk232c1502004-03-12 00:14:09 +0000905 }
906
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200907 }/* end while */
wdenk232c1502004-03-12 00:14:09 +0000908 return total;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200909 }
wdenk232c1502004-03-12 00:14:09 +0000910
911 return 0;
912}
913
914static int fill_buffer (circbuf_t * buf)
915{
916 struct usb_endpoint_instance *endpoint =
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200917 &endpoint_instance[rx_endpoint];
wdenk232c1502004-03-12 00:14:09 +0000918
919 if (endpoint->rcv_urb && endpoint->rcv_urb->actual_length) {
Wolfgang Denk386eda02006-06-14 18:14:56 +0200920 unsigned int nb = 0;
wdenk232c1502004-03-12 00:14:09 +0000921 char *src = (char *) endpoint->rcv_urb->buffer;
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200922 unsigned int rx_avail = buf->totalsize - buf->size;
wdenk232c1502004-03-12 00:14:09 +0000923
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200924 if(rx_avail >= endpoint->rcv_urb->actual_length){
wdenk232c1502004-03-12 00:14:09 +0000925
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200926 nb = endpoint->rcv_urb->actual_length;
927 buf_push (buf, src, nb);
928 endpoint->rcv_urb->actual_length = 0;
Wolfgang Denk386eda02006-06-14 18:14:56 +0200929
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200930 }
wdenk232c1502004-03-12 00:14:09 +0000931 return nb;
932 }
wdenk232c1502004-03-12 00:14:09 +0000933 return 0;
934}
935
936static int usbtty_configured (void)
937{
938 return usbtty_configured_flag;
939}
940
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200941/******************************************************************************/
wdenk232c1502004-03-12 00:14:09 +0000942
943static void usbtty_event_handler (struct usb_device_instance *device,
944 usb_device_event_t event, int data)
945{
Vipin KUMARf9da0f82012-03-26 15:38:06 +0530946#if defined(CONFIG_USBD_HS)
947 int i;
948#endif
wdenk232c1502004-03-12 00:14:09 +0000949 switch (event) {
950 case DEVICE_RESET:
951 case DEVICE_BUS_INACTIVE:
952 usbtty_configured_flag = 0;
953 break;
954 case DEVICE_CONFIGURED:
955 usbtty_configured_flag = 1;
956 break;
957
958 case DEVICE_ADDRESS_ASSIGNED:
Vipin KUMARf9da0f82012-03-26 15:38:06 +0530959#if defined(CONFIG_USBD_HS)
960 /*
961 * is_usbd_high_speed routine needs to be defined by
962 * specific gadget driver
York Sun472d5462013-04-01 11:29:11 -0700963 * It returns true if device enumerates at High speed
964 * Retuns false otherwise
Vipin KUMARf9da0f82012-03-26 15:38:06 +0530965 */
966 for (i = 0; i < NUM_ENDPOINTS; i++) {
967 if (((ep_descriptor_ptrs[i]->bmAttributes &
968 USB_ENDPOINT_XFERTYPE_MASK) ==
969 USB_ENDPOINT_XFER_BULK)
970 && is_usbd_high_speed()) {
971
972 ep_descriptor_ptrs[i]->wMaxPacketSize =
973 CONFIG_USBD_SERIAL_BULK_HS_PKTSIZE;
974 }
975
976 endpoint_instance[i + 1].tx_packetSize =
977 ep_descriptor_ptrs[i]->wMaxPacketSize;
978 endpoint_instance[i + 1].rcv_packetSize =
979 ep_descriptor_ptrs[i]->wMaxPacketSize;
980 }
981#endif
wdenk232c1502004-03-12 00:14:09 +0000982 usbtty_init_endpoints ();
983
984 default:
985 break;
986 }
987}
988
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200989/******************************************************************************/
wdenk232c1502004-03-12 00:14:09 +0000990
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200991int usbtty_cdc_setup(struct usb_device_request *request, struct urb *urb)
992{
993 switch (request->bRequest){
994
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200995 case ACM_SET_CONTROL_LINE_STATE: /* Implies DTE ready */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200996 break;
Wolfgang Denk53677ef2008-05-20 16:00:29 +0200997 case ACM_SEND_ENCAPSULATED_COMMAND : /* Required */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +0200998 break;
999 case ACM_SET_LINE_ENCODING : /* DTE stop/parity bits
Wolfgang Denk386eda02006-06-14 18:14:56 +02001000 * per character */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001001 break;
Wolfgang Denk53677ef2008-05-20 16:00:29 +02001002 case ACM_GET_ENCAPSULATED_RESPONSE : /* request response */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001003 break;
1004 case ACM_GET_LINE_ENCODING : /* request DTE rate,
1005 * stop/parity bits */
1006 memcpy (urb->buffer , &rs232_desc, sizeof(rs232_desc));
1007 urb->actual_length = sizeof(rs232_desc);
1008
1009 break;
Wolfgang Denk53677ef2008-05-20 16:00:29 +02001010 default:
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001011 return 1;
1012 }
1013 return 0;
1014}
1015
1016/******************************************************************************/
wdenk232c1502004-03-12 00:14:09 +00001017
1018/*
1019 * Since interrupt handling has not yet been implemented, we use this function
1020 * to handle polling. This is called by the tstc,getc,putc,puts routines to
1021 * update the USB state.
1022 */
1023void usbtty_poll (void)
1024{
1025 /* New interrupts? */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001026 udc_irq();
wdenk232c1502004-03-12 00:14:09 +00001027
Wolfgang Denk386eda02006-06-14 18:14:56 +02001028 /* Write any output data to host buffer
1029 * (do this before checking interrupts to avoid missing one)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001030 */
wdenk232c1502004-03-12 00:14:09 +00001031 if (usbtty_configured ()) {
1032 write_buffer (&usbtty_output);
1033 }
1034
1035 /* New interrupts? */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001036 udc_irq();
Wolfgang Denk386eda02006-06-14 18:14:56 +02001037
1038 /* Check for new data from host..
1039 * (do this after checking interrupts to get latest data)
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001040 */
wdenk232c1502004-03-12 00:14:09 +00001041 if (usbtty_configured ()) {
1042 fill_buffer (&usbtty_input);
1043 }
1044
1045 /* New interrupts? */
Wolfgang Denk16c8d5e2006-06-14 17:45:53 +02001046 udc_irq();
1047
wdenk232c1502004-03-12 00:14:09 +00001048}