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/*
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---|---|
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* FTDI FT232BM Device emulation
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*
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* Copyright (c) 2006 CodeSourcery.
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* Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org>
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* Written by Paul Brook, reused for FTDI by Samuel Thibault
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*
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* This code is licenced under the LGPL.
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*/
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#include "qemu-common.h" |
12 |
#include "usb.h" |
13 |
#include "qemu-char.h" |
14 |
|
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//#define DEBUG_Serial
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|
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#ifdef DEBUG_Serial
|
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#define DPRINTF(fmt, ...) \
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do { printf("usb-serial: " fmt , ## __VA_ARGS__); } while (0) |
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#else
|
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#define DPRINTF(fmt, ...) do {} while(0) |
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#endif
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|
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#define RECV_BUF 384 |
25 |
|
26 |
/* Commands */
|
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#define FTDI_RESET 0 |
28 |
#define FTDI_SET_MDM_CTRL 1 |
29 |
#define FTDI_SET_FLOW_CTRL 2 |
30 |
#define FTDI_SET_BAUD 3 |
31 |
#define FTDI_SET_DATA 4 |
32 |
#define FTDI_GET_MDM_ST 5 |
33 |
#define FTDI_SET_EVENT_CHR 6 |
34 |
#define FTDI_SET_ERROR_CHR 7 |
35 |
#define FTDI_SET_LATENCY 9 |
36 |
#define FTDI_GET_LATENCY 10 |
37 |
|
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#define DeviceOutVendor ((USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8) |
39 |
#define DeviceInVendor ((USB_DIR_IN |USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8) |
40 |
|
41 |
/* RESET */
|
42 |
|
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#define FTDI_RESET_SIO 0 |
44 |
#define FTDI_RESET_RX 1 |
45 |
#define FTDI_RESET_TX 2 |
46 |
|
47 |
/* SET_MDM_CTRL */
|
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|
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#define FTDI_DTR 1 |
50 |
#define FTDI_SET_DTR (FTDI_DTR << 8) |
51 |
#define FTDI_RTS 2 |
52 |
#define FTDI_SET_RTS (FTDI_RTS << 8) |
53 |
|
54 |
/* SET_FLOW_CTRL */
|
55 |
|
56 |
#define FTDI_RTS_CTS_HS 1 |
57 |
#define FTDI_DTR_DSR_HS 2 |
58 |
#define FTDI_XON_XOFF_HS 4 |
59 |
|
60 |
/* SET_DATA */
|
61 |
|
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#define FTDI_PARITY (0x7 << 8) |
63 |
#define FTDI_ODD (0x1 << 8) |
64 |
#define FTDI_EVEN (0x2 << 8) |
65 |
#define FTDI_MARK (0x3 << 8) |
66 |
#define FTDI_SPACE (0x4 << 8) |
67 |
|
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#define FTDI_STOP (0x3 << 11) |
69 |
#define FTDI_STOP1 (0x0 << 11) |
70 |
#define FTDI_STOP15 (0x1 << 11) |
71 |
#define FTDI_STOP2 (0x2 << 11) |
72 |
|
73 |
/* GET_MDM_ST */
|
74 |
/* TODO: should be sent every 40ms */
|
75 |
#define FTDI_CTS (1<<4) // CTS line status |
76 |
#define FTDI_DSR (1<<5) // DSR line status |
77 |
#define FTDI_RI (1<<6) // RI line status |
78 |
#define FTDI_RLSD (1<<7) // Receive Line Signal Detect |
79 |
|
80 |
/* Status */
|
81 |
|
82 |
#define FTDI_DR (1<<0) // Data Ready |
83 |
#define FTDI_OE (1<<1) // Overrun Err |
84 |
#define FTDI_PE (1<<2) // Parity Err |
85 |
#define FTDI_FE (1<<3) // Framing Err |
86 |
#define FTDI_BI (1<<4) // Break Interrupt |
87 |
#define FTDI_THRE (1<<5) // Transmitter Holding Register |
88 |
#define FTDI_TEMT (1<<6) // Transmitter Empty |
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#define FTDI_FIFO (1<<7) // Error in FIFO |
90 |
|
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typedef struct { |
92 |
USBDevice dev; |
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uint16_t vendorid; |
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uint16_t productid; |
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uint8_t recv_buf[RECV_BUF]; |
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uint16_t recv_ptr; |
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uint16_t recv_used; |
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uint8_t event_chr; |
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uint8_t error_chr; |
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uint8_t event_trigger; |
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QEMUSerialSetParams params; |
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int latency; /* ms */ |
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CharDriverState *cs; |
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} USBSerialState; |
105 |
|
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static const uint8_t qemu_serial_dev_descriptor[] = { |
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0x12, /* u8 bLength; */ |
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0x01, /* u8 bDescriptorType; Device */ |
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0x00, 0x02, /* u16 bcdUSB; v2.0 */ |
110 |
|
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0x00, /* u8 bDeviceClass; */ |
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0x00, /* u8 bDeviceSubClass; */ |
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0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
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0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
115 |
|
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/* Vendor and product id are arbitrary. */
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0x03, 0x04, /* u16 idVendor; */ |
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0x00, 0xFF, /* u16 idProduct; */ |
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0x00, 0x04, /* u16 bcdDevice */ |
120 |
|
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0x01, /* u8 iManufacturer; */ |
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0x02, /* u8 iProduct; */ |
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0x03, /* u8 iSerialNumber; */ |
124 |
0x01 /* u8 bNumConfigurations; */ |
125 |
}; |
126 |
|
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static const uint8_t qemu_serial_config_descriptor[] = { |
128 |
|
129 |
/* one configuration */
|
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0x09, /* u8 bLength; */ |
131 |
0x02, /* u8 bDescriptorType; Configuration */ |
132 |
0x20, 0x00, /* u16 wTotalLength; */ |
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0x01, /* u8 bNumInterfaces; (1) */ |
134 |
0x01, /* u8 bConfigurationValue; */ |
135 |
0x00, /* u8 iConfiguration; */ |
136 |
0x80, /* u8 bmAttributes; |
137 |
Bit 7: must be set,
|
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6: Self-powered,
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5: Remote wakeup,
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4..0: resvd */
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100/2, /* u8 MaxPower; */ |
142 |
|
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/* one interface */
|
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0x09, /* u8 if_bLength; */ |
145 |
0x04, /* u8 if_bDescriptorType; Interface */ |
146 |
0x00, /* u8 if_bInterfaceNumber; */ |
147 |
0x00, /* u8 if_bAlternateSetting; */ |
148 |
0x02, /* u8 if_bNumEndpoints; */ |
149 |
0xff, /* u8 if_bInterfaceClass; Vendor Specific */ |
150 |
0xff, /* u8 if_bInterfaceSubClass; Vendor Specific */ |
151 |
0xff, /* u8 if_bInterfaceProtocol; Vendor Specific */ |
152 |
0x02, /* u8 if_iInterface; */ |
153 |
|
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/* Bulk-In endpoint */
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0x07, /* u8 ep_bLength; */ |
156 |
0x05, /* u8 ep_bDescriptorType; Endpoint */ |
157 |
0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
158 |
0x02, /* u8 ep_bmAttributes; Bulk */ |
159 |
0x40, 0x00, /* u16 ep_wMaxPacketSize; */ |
160 |
0x00, /* u8 ep_bInterval; */ |
161 |
|
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/* Bulk-Out endpoint */
|
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0x07, /* u8 ep_bLength; */ |
164 |
0x05, /* u8 ep_bDescriptorType; Endpoint */ |
165 |
0x02, /* u8 ep_bEndpointAddress; OUT Endpoint 2 */ |
166 |
0x02, /* u8 ep_bmAttributes; Bulk */ |
167 |
0x40, 0x00, /* u16 ep_wMaxPacketSize; */ |
168 |
0x00 /* u8 ep_bInterval; */ |
169 |
}; |
170 |
|
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static void usb_serial_reset(USBSerialState *s) |
172 |
{ |
173 |
/* TODO: Set flow control to none */
|
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s->event_chr = 0x0d;
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175 |
s->event_trigger = 0;
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176 |
s->recv_ptr = 0;
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177 |
s->recv_used = 0;
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178 |
/* TODO: purge in char driver */
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} |
180 |
|
181 |
static void usb_serial_handle_reset(USBDevice *dev) |
182 |
{ |
183 |
USBSerialState *s = (USBSerialState *)dev; |
184 |
|
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DPRINTF("Reset\n");
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186 |
|
187 |
usb_serial_reset(s); |
188 |
/* TODO: Reset char device, send BREAK? */
|
189 |
} |
190 |
|
191 |
static uint8_t usb_get_modem_lines(USBSerialState *s)
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{ |
193 |
int flags;
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194 |
uint8_t ret; |
195 |
|
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if (qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_GET_TIOCM, &flags) == -ENOTSUP)
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return FTDI_CTS|FTDI_DSR|FTDI_RLSD;
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198 |
|
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ret = 0;
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if (flags & CHR_TIOCM_CTS)
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ret |= FTDI_CTS; |
202 |
if (flags & CHR_TIOCM_DSR)
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ret |= FTDI_DSR; |
204 |
if (flags & CHR_TIOCM_RI)
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ret |= FTDI_RI; |
206 |
if (flags & CHR_TIOCM_CAR)
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ret |= FTDI_RLSD; |
208 |
|
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return ret;
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} |
211 |
|
212 |
static int usb_serial_handle_control(USBDevice *dev, int request, int value, |
213 |
int index, int length, uint8_t *data) |
214 |
{ |
215 |
USBSerialState *s = (USBSerialState *)dev; |
216 |
int ret = 0; |
217 |
|
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//DPRINTF("got control %x, value %x\n",request, value);
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219 |
switch (request) {
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220 |
case DeviceRequest | USB_REQ_GET_STATUS:
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221 |
data[0] = (0 << USB_DEVICE_SELF_POWERED) | |
222 |
(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
223 |
data[1] = 0x00; |
224 |
ret = 2;
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225 |
break;
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226 |
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
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227 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
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dev->remote_wakeup = 0;
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229 |
} else {
|
230 |
goto fail;
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231 |
} |
232 |
ret = 0;
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233 |
break;
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234 |
case DeviceOutRequest | USB_REQ_SET_FEATURE:
|
235 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
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236 |
dev->remote_wakeup = 1;
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237 |
} else {
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238 |
goto fail;
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239 |
} |
240 |
ret = 0;
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241 |
break;
|
242 |
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
243 |
dev->addr = value; |
244 |
ret = 0;
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245 |
break;
|
246 |
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
247 |
switch(value >> 8) { |
248 |
case USB_DT_DEVICE:
|
249 |
memcpy(data, qemu_serial_dev_descriptor, |
250 |
sizeof(qemu_serial_dev_descriptor));
|
251 |
data[8] = s->vendorid & 0xff; |
252 |
data[9] = ((s->vendorid) >> 8) & 0xff; |
253 |
data[10] = s->productid & 0xff; |
254 |
data[11] = ((s->productid) >> 8) & 0xff; |
255 |
ret = sizeof(qemu_serial_dev_descriptor);
|
256 |
break;
|
257 |
case USB_DT_CONFIG:
|
258 |
memcpy(data, qemu_serial_config_descriptor, |
259 |
sizeof(qemu_serial_config_descriptor));
|
260 |
ret = sizeof(qemu_serial_config_descriptor);
|
261 |
break;
|
262 |
case USB_DT_STRING:
|
263 |
switch(value & 0xff) { |
264 |
case 0: |
265 |
/* language ids */
|
266 |
data[0] = 4; |
267 |
data[1] = 3; |
268 |
data[2] = 0x09; |
269 |
data[3] = 0x04; |
270 |
ret = 4;
|
271 |
break;
|
272 |
case 1: |
273 |
/* vendor description */
|
274 |
ret = set_usb_string(data, "QEMU " QEMU_VERSION);
|
275 |
break;
|
276 |
case 2: |
277 |
/* product description */
|
278 |
ret = set_usb_string(data, "QEMU USB SERIAL");
|
279 |
break;
|
280 |
case 3: |
281 |
/* serial number */
|
282 |
ret = set_usb_string(data, "1");
|
283 |
break;
|
284 |
default:
|
285 |
goto fail;
|
286 |
} |
287 |
break;
|
288 |
default:
|
289 |
goto fail;
|
290 |
} |
291 |
break;
|
292 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
293 |
data[0] = 1; |
294 |
ret = 1;
|
295 |
break;
|
296 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
297 |
ret = 0;
|
298 |
break;
|
299 |
case DeviceRequest | USB_REQ_GET_INTERFACE:
|
300 |
data[0] = 0; |
301 |
ret = 1;
|
302 |
break;
|
303 |
case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
|
304 |
ret = 0;
|
305 |
break;
|
306 |
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
|
307 |
ret = 0;
|
308 |
break;
|
309 |
|
310 |
/* Class specific requests. */
|
311 |
case DeviceOutVendor | FTDI_RESET:
|
312 |
switch (value) {
|
313 |
case FTDI_RESET_SIO:
|
314 |
usb_serial_reset(s); |
315 |
break;
|
316 |
case FTDI_RESET_RX:
|
317 |
s->recv_ptr = 0;
|
318 |
s->recv_used = 0;
|
319 |
/* TODO: purge from char device */
|
320 |
break;
|
321 |
case FTDI_RESET_TX:
|
322 |
/* TODO: purge from char device */
|
323 |
break;
|
324 |
} |
325 |
break;
|
326 |
case DeviceOutVendor | FTDI_SET_MDM_CTRL:
|
327 |
{ |
328 |
static int flags; |
329 |
qemu_chr_ioctl(s->cs,CHR_IOCTL_SERIAL_GET_TIOCM, &flags); |
330 |
if (value & FTDI_SET_RTS) {
|
331 |
if (value & FTDI_RTS)
|
332 |
flags |= CHR_TIOCM_RTS; |
333 |
else
|
334 |
flags &= ~CHR_TIOCM_RTS; |
335 |
} |
336 |
if (value & FTDI_SET_DTR) {
|
337 |
if (value & FTDI_DTR)
|
338 |
flags |= CHR_TIOCM_DTR; |
339 |
else
|
340 |
flags &= ~CHR_TIOCM_DTR; |
341 |
} |
342 |
qemu_chr_ioctl(s->cs,CHR_IOCTL_SERIAL_SET_TIOCM, &flags); |
343 |
break;
|
344 |
} |
345 |
case DeviceOutVendor | FTDI_SET_FLOW_CTRL:
|
346 |
/* TODO: ioctl */
|
347 |
break;
|
348 |
case DeviceOutVendor | FTDI_SET_BAUD: {
|
349 |
static const int subdivisors8[8] = { 0, 4, 2, 1, 3, 5, 6, 7 }; |
350 |
int subdivisor8 = subdivisors8[((value & 0xc000) >> 14) |
351 |
| ((index & 1) << 2)]; |
352 |
int divisor = value & 0x3fff; |
353 |
|
354 |
/* chip special cases */
|
355 |
if (divisor == 1 && subdivisor8 == 0) |
356 |
subdivisor8 = 4;
|
357 |
if (divisor == 0 && subdivisor8 == 0) |
358 |
divisor = 1;
|
359 |
|
360 |
s->params.speed = (48000000 / 2) / (8 * divisor + subdivisor8); |
361 |
qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params); |
362 |
break;
|
363 |
} |
364 |
case DeviceOutVendor | FTDI_SET_DATA:
|
365 |
switch (value & FTDI_PARITY) {
|
366 |
case 0: |
367 |
s->params.parity = 'N';
|
368 |
break;
|
369 |
case FTDI_ODD:
|
370 |
s->params.parity = 'O';
|
371 |
break;
|
372 |
case FTDI_EVEN:
|
373 |
s->params.parity = 'E';
|
374 |
break;
|
375 |
default:
|
376 |
DPRINTF("unsupported parity %d\n", value & FTDI_PARITY);
|
377 |
goto fail;
|
378 |
} |
379 |
switch (value & FTDI_STOP) {
|
380 |
case FTDI_STOP1:
|
381 |
s->params.stop_bits = 1;
|
382 |
break;
|
383 |
case FTDI_STOP2:
|
384 |
s->params.stop_bits = 2;
|
385 |
break;
|
386 |
default:
|
387 |
DPRINTF("unsupported stop bits %d\n", value & FTDI_STOP);
|
388 |
goto fail;
|
389 |
} |
390 |
qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params); |
391 |
/* TODO: TX ON/OFF */
|
392 |
break;
|
393 |
case DeviceInVendor | FTDI_GET_MDM_ST:
|
394 |
data[0] = usb_get_modem_lines(s) | 1; |
395 |
data[1] = 0; |
396 |
ret = 2;
|
397 |
break;
|
398 |
case DeviceOutVendor | FTDI_SET_EVENT_CHR:
|
399 |
/* TODO: handle it */
|
400 |
s->event_chr = value; |
401 |
break;
|
402 |
case DeviceOutVendor | FTDI_SET_ERROR_CHR:
|
403 |
/* TODO: handle it */
|
404 |
s->error_chr = value; |
405 |
break;
|
406 |
case DeviceOutVendor | FTDI_SET_LATENCY:
|
407 |
s->latency = value; |
408 |
break;
|
409 |
case DeviceInVendor | FTDI_GET_LATENCY:
|
410 |
data[0] = s->latency;
|
411 |
ret = 1;
|
412 |
break;
|
413 |
default:
|
414 |
fail:
|
415 |
DPRINTF("got unsupported/bogus control %x, value %x\n", request, value);
|
416 |
ret = USB_RET_STALL; |
417 |
break;
|
418 |
} |
419 |
return ret;
|
420 |
} |
421 |
|
422 |
static int usb_serial_handle_data(USBDevice *dev, USBPacket *p) |
423 |
{ |
424 |
USBSerialState *s = (USBSerialState *)dev; |
425 |
int ret = 0; |
426 |
uint8_t devep = p->devep; |
427 |
uint8_t *data = p->data; |
428 |
int len = p->len;
|
429 |
int first_len;
|
430 |
|
431 |
switch (p->pid) {
|
432 |
case USB_TOKEN_OUT:
|
433 |
if (devep != 2) |
434 |
goto fail;
|
435 |
qemu_chr_write(s->cs, data, len); |
436 |
break;
|
437 |
|
438 |
case USB_TOKEN_IN:
|
439 |
if (devep != 1) |
440 |
goto fail;
|
441 |
first_len = RECV_BUF - s->recv_ptr; |
442 |
if (len <= 2) { |
443 |
ret = USB_RET_NAK; |
444 |
break;
|
445 |
} |
446 |
*data++ = usb_get_modem_lines(s) | 1;
|
447 |
/* We do not have the uart details */
|
448 |
/* handle serial break */
|
449 |
if (s->event_trigger && s->event_trigger & FTDI_BI) {
|
450 |
s->event_trigger &= ~FTDI_BI; |
451 |
*data++ = FTDI_BI; |
452 |
ret = 2;
|
453 |
break;
|
454 |
} else {
|
455 |
*data++ = 0;
|
456 |
} |
457 |
len -= 2;
|
458 |
if (len > s->recv_used)
|
459 |
len = s->recv_used; |
460 |
if (!len) {
|
461 |
ret = USB_RET_NAK; |
462 |
break;
|
463 |
} |
464 |
if (first_len > len)
|
465 |
first_len = len; |
466 |
memcpy(data, s->recv_buf + s->recv_ptr, first_len); |
467 |
if (len > first_len)
|
468 |
memcpy(data + first_len, s->recv_buf, len - first_len); |
469 |
s->recv_used -= len; |
470 |
s->recv_ptr = (s->recv_ptr + len) % RECV_BUF; |
471 |
ret = len + 2;
|
472 |
break;
|
473 |
|
474 |
default:
|
475 |
DPRINTF("Bad token\n");
|
476 |
fail:
|
477 |
ret = USB_RET_STALL; |
478 |
break;
|
479 |
} |
480 |
|
481 |
return ret;
|
482 |
} |
483 |
|
484 |
static void usb_serial_handle_destroy(USBDevice *dev) |
485 |
{ |
486 |
USBSerialState *s = (USBSerialState *)dev; |
487 |
|
488 |
qemu_chr_close(s->cs); |
489 |
qemu_free(s); |
490 |
} |
491 |
|
492 |
static int usb_serial_can_read(void *opaque) |
493 |
{ |
494 |
USBSerialState *s = opaque; |
495 |
return RECV_BUF - s->recv_used;
|
496 |
} |
497 |
|
498 |
static void usb_serial_read(void *opaque, const uint8_t *buf, int size) |
499 |
{ |
500 |
USBSerialState *s = opaque; |
501 |
int first_size = RECV_BUF - s->recv_ptr;
|
502 |
if (first_size > size)
|
503 |
first_size = size; |
504 |
memcpy(s->recv_buf + s->recv_ptr + s->recv_used, buf, first_size); |
505 |
if (size > first_size)
|
506 |
memcpy(s->recv_buf, buf + first_size, size - first_size); |
507 |
s->recv_used += size; |
508 |
} |
509 |
|
510 |
static void usb_serial_event(void *opaque, int event) |
511 |
{ |
512 |
USBSerialState *s = opaque; |
513 |
|
514 |
switch (event) {
|
515 |
case CHR_EVENT_BREAK:
|
516 |
s->event_trigger |= FTDI_BI; |
517 |
break;
|
518 |
case CHR_EVENT_FOCUS:
|
519 |
break;
|
520 |
case CHR_EVENT_RESET:
|
521 |
usb_serial_reset(s); |
522 |
/* TODO: Reset USB port */
|
523 |
break;
|
524 |
} |
525 |
} |
526 |
|
527 |
USBDevice *usb_serial_init(const char *filename) |
528 |
{ |
529 |
USBSerialState *s; |
530 |
CharDriverState *cdrv; |
531 |
unsigned short vendorid = 0x0403, productid = 0x6001; |
532 |
char label[32]; |
533 |
static int index; |
534 |
|
535 |
while (*filename && *filename != ':') { |
536 |
const char *p; |
537 |
char *e;
|
538 |
if (strstart(filename, "vendorid=", &p)) { |
539 |
vendorid = strtol(p, &e, 16);
|
540 |
if (e == p || (*e && *e != ',' && *e != ':')) { |
541 |
printf("bogus vendor ID %s\n", p);
|
542 |
return NULL; |
543 |
} |
544 |
filename = e; |
545 |
} else if (strstart(filename, "productid=", &p)) { |
546 |
productid = strtol(p, &e, 16);
|
547 |
if (e == p || (*e && *e != ',' && *e != ':')) { |
548 |
printf("bogus product ID %s\n", p);
|
549 |
return NULL; |
550 |
} |
551 |
filename = e; |
552 |
} else {
|
553 |
printf("unrecognized serial USB option %s\n", filename);
|
554 |
return NULL; |
555 |
} |
556 |
while(*filename == ',') |
557 |
filename++; |
558 |
} |
559 |
if (!*filename) {
|
560 |
printf("character device specification needed\n");
|
561 |
return NULL; |
562 |
} |
563 |
filename++; |
564 |
s = qemu_mallocz(sizeof(USBSerialState));
|
565 |
|
566 |
snprintf(label, sizeof(label), "usbserial%d", index++); |
567 |
cdrv = qemu_chr_open(label, filename, NULL);
|
568 |
if (!cdrv)
|
569 |
goto fail;
|
570 |
s->cs = cdrv; |
571 |
qemu_chr_add_handlers(cdrv, usb_serial_can_read, usb_serial_read, usb_serial_event, s); |
572 |
|
573 |
s->dev.speed = USB_SPEED_FULL; |
574 |
s->dev.handle_packet = usb_generic_handle_packet; |
575 |
|
576 |
s->dev.handle_reset = usb_serial_handle_reset; |
577 |
s->dev.handle_control = usb_serial_handle_control; |
578 |
s->dev.handle_data = usb_serial_handle_data; |
579 |
s->dev.handle_destroy = usb_serial_handle_destroy; |
580 |
|
581 |
s->vendorid = vendorid; |
582 |
s->productid = productid; |
583 |
|
584 |
snprintf(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Serial(%.16s)", |
585 |
filename); |
586 |
|
587 |
usb_serial_handle_reset((USBDevice *)s); |
588 |
return (USBDevice *)s;
|
589 |
fail:
|
590 |
qemu_free(s); |
591 |
return NULL; |
592 |
} |