root / hw / usb-serial.c @ 8114e9e8
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1 | a7954218 | balrog | /*
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2 | a7954218 | balrog | * FTDI FT232BM Device emulation
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3 | a7954218 | balrog | *
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4 | a7954218 | balrog | * Copyright (c) 2006 CodeSourcery.
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5 | a7954218 | balrog | * Copyright (c) 2008 Samuel Thibault <samuel.thibault@ens-lyon.org>
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6 | a7954218 | balrog | * Written by Paul Brook, reused for FTDI by Samuel Thibault
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7 | a7954218 | balrog | *
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8 | a7954218 | balrog | * This code is licenced under the LGPL.
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9 | a7954218 | balrog | */
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10 | a7954218 | balrog | |
11 | a7954218 | balrog | #include "qemu-common.h" |
12 | a7954218 | balrog | #include "usb.h" |
13 | a7954218 | balrog | #include "qemu-char.h" |
14 | a7954218 | balrog | |
15 | a7954218 | balrog | //#define DEBUG_Serial
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16 | a7954218 | balrog | |
17 | a7954218 | balrog | #ifdef DEBUG_Serial
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18 | a7954218 | balrog | #define DPRINTF(fmt, args...) \
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19 | a7954218 | balrog | do { printf("usb-serial: " fmt , ##args); } while (0) |
20 | a7954218 | balrog | #else
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21 | a7954218 | balrog | #define DPRINTF(fmt, args...) do {} while(0) |
22 | a7954218 | balrog | #endif
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23 | a7954218 | balrog | |
24 | a7954218 | balrog | #define RECV_BUF 384 |
25 | a7954218 | balrog | #define SEND_BUF 128 // Not used for now |
26 | a7954218 | balrog | |
27 | a7954218 | balrog | /* Commands */
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28 | a7954218 | balrog | #define FTDI_RESET 0 |
29 | a7954218 | balrog | #define FTDI_SET_MDM_CTRL 1 |
30 | a7954218 | balrog | #define FTDI_SET_FLOW_CTRL 2 |
31 | a7954218 | balrog | #define FTDI_SET_BAUD 3 |
32 | a7954218 | balrog | #define FTDI_SET_DATA 4 |
33 | a7954218 | balrog | #define FTDI_GET_MDM_ST 5 |
34 | a7954218 | balrog | #define FTDI_SET_EVENT_CHR 6 |
35 | a7954218 | balrog | #define FTDI_SET_ERROR_CHR 7 |
36 | a7954218 | balrog | #define FTDI_SET_LATENCY 9 |
37 | a7954218 | balrog | #define FTDI_GET_LATENCY 10 |
38 | a7954218 | balrog | |
39 | a7954218 | balrog | #define DeviceOutVendor ((USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8) |
40 | a7954218 | balrog | #define DeviceInVendor ((USB_DIR_IN |USB_TYPE_VENDOR|USB_RECIP_DEVICE)<<8) |
41 | a7954218 | balrog | |
42 | a7954218 | balrog | /* RESET */
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43 | a7954218 | balrog | |
44 | a7954218 | balrog | #define FTDI_RESET_SIO 0 |
45 | a7954218 | balrog | #define FTDI_RESET_RX 1 |
46 | a7954218 | balrog | #define FTDI_RESET_TX 2 |
47 | a7954218 | balrog | |
48 | a7954218 | balrog | /* SET_MDM_CTRL */
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49 | a7954218 | balrog | |
50 | a7954218 | balrog | #define FTDI_MDM_CTRL 3 |
51 | a7954218 | balrog | #define FTDI_DTR 1 |
52 | a7954218 | balrog | #define FTDI_RTS 2 |
53 | a7954218 | balrog | |
54 | a7954218 | balrog | /* SET_FLOW_CTRL */
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55 | a7954218 | balrog | |
56 | a7954218 | balrog | #define FTDI_RTS_CTS_HS 1 |
57 | a7954218 | balrog | #define FTDI_DTR_DSR_HS 2 |
58 | a7954218 | balrog | #define FTDI_XON_XOFF_HS 4 |
59 | a7954218 | balrog | |
60 | a7954218 | balrog | /* SET_DATA */
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61 | a7954218 | balrog | |
62 | a7954218 | balrog | #define FTDI_PARITY (0x7 << 8) |
63 | a7954218 | balrog | #define FTDI_ODD (0x1 << 8) |
64 | a7954218 | balrog | #define FTDI_EVEN (0x2 << 8) |
65 | a7954218 | balrog | #define FTDI_MARK (0x3 << 8) |
66 | a7954218 | balrog | #define FTDI_SPACE (0x4 << 8) |
67 | a7954218 | balrog | |
68 | a7954218 | balrog | #define FTDI_STOP (0x3 << 11) |
69 | a7954218 | balrog | #define FTDI_STOP1 (0x0 << 11) |
70 | a7954218 | balrog | #define FTDI_STOP15 (0x1 << 11) |
71 | a7954218 | balrog | #define FTDI_STOP2 (0x2 << 11) |
72 | a7954218 | balrog | |
73 | a7954218 | balrog | /* GET_MDM_ST */
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74 | a7954218 | balrog | /* TODO: should be sent every 40ms */
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75 | a7954218 | balrog | #define FTDI_CTS (1<<4) // CTS line status |
76 | a7954218 | balrog | #define FTDI_DSR (1<<5) // DSR line status |
77 | a7954218 | balrog | #define FTDI_RI (1<<6) // RI line status |
78 | a7954218 | balrog | #define FTDI_RLSD (1<<7) // Receive Line Signal Detect |
79 | a7954218 | balrog | |
80 | a7954218 | balrog | /* Status */
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81 | a7954218 | balrog | |
82 | a7954218 | balrog | #define FTDI_DR (1<<0) // Data Ready |
83 | a7954218 | balrog | #define FTDI_OE (1<<1) // Overrun Err |
84 | a7954218 | balrog | #define FTDI_PE (1<<2) // Parity Err |
85 | a7954218 | balrog | #define FTDI_FE (1<<3) // Framing Err |
86 | a7954218 | balrog | #define FTDI_BI (1<<4) // Break Interrupt |
87 | a7954218 | balrog | #define FTDI_THRE (1<<5) // Transmitter Holding Register |
88 | a7954218 | balrog | #define FTDI_TEMT (1<<6) // Transmitter Empty |
89 | a7954218 | balrog | #define FTDI_FIFO (1<<7) // Error in FIFO |
90 | a7954218 | balrog | |
91 | a7954218 | balrog | typedef struct { |
92 | a7954218 | balrog | USBDevice dev; |
93 | a7954218 | balrog | uint16_t vendorid; |
94 | a7954218 | balrog | uint16_t productid; |
95 | a7954218 | balrog | uint8_t recv_buf[RECV_BUF]; |
96 | a7954218 | balrog | uint8_t recv_ptr; |
97 | a7954218 | balrog | uint8_t recv_used; |
98 | a7954218 | balrog | uint8_t send_buf[SEND_BUF]; |
99 | a7954218 | balrog | uint8_t event_chr; |
100 | a7954218 | balrog | uint8_t error_chr; |
101 | a7954218 | balrog | uint8_t event_trigger; |
102 | a7954218 | balrog | uint8_t lines; |
103 | a7954218 | balrog | QEMUSerialSetParams params; |
104 | a7954218 | balrog | int latency; /* ms */ |
105 | a7954218 | balrog | CharDriverState *cs; |
106 | a7954218 | balrog | } USBSerialState; |
107 | a7954218 | balrog | |
108 | a7954218 | balrog | static const uint8_t qemu_serial_dev_descriptor[] = { |
109 | a7954218 | balrog | 0x12, /* u8 bLength; */ |
110 | a7954218 | balrog | 0x01, /* u8 bDescriptorType; Device */ |
111 | a7954218 | balrog | 0x00, 0x02, /* u16 bcdUSB; v2.0 */ |
112 | a7954218 | balrog | |
113 | a7954218 | balrog | 0x00, /* u8 bDeviceClass; */ |
114 | a7954218 | balrog | 0x00, /* u8 bDeviceSubClass; */ |
115 | a7954218 | balrog | 0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
116 | a7954218 | balrog | 0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
117 | a7954218 | balrog | |
118 | a7954218 | balrog | /* Vendor and product id are arbitrary. */
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119 | a7954218 | balrog | 0x03, 0x04, /* u16 idVendor; */ |
120 | a7954218 | balrog | 0x00, 0xFF, /* u16 idProduct; */ |
121 | a7954218 | balrog | 0x00, 0x04, /* u16 bcdDevice */ |
122 | a7954218 | balrog | |
123 | a7954218 | balrog | 0x01, /* u8 iManufacturer; */ |
124 | a7954218 | balrog | 0x02, /* u8 iProduct; */ |
125 | a7954218 | balrog | 0x03, /* u8 iSerialNumber; */ |
126 | a7954218 | balrog | 0x01 /* u8 bNumConfigurations; */ |
127 | a7954218 | balrog | }; |
128 | a7954218 | balrog | |
129 | a7954218 | balrog | static const uint8_t qemu_serial_config_descriptor[] = { |
130 | a7954218 | balrog | |
131 | a7954218 | balrog | /* one configuration */
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132 | a7954218 | balrog | 0x09, /* u8 bLength; */ |
133 | a7954218 | balrog | 0x02, /* u8 bDescriptorType; Configuration */ |
134 | a7954218 | balrog | 0x20, 0x00, /* u16 wTotalLength; */ |
135 | a7954218 | balrog | 0x01, /* u8 bNumInterfaces; (1) */ |
136 | a7954218 | balrog | 0x01, /* u8 bConfigurationValue; */ |
137 | a7954218 | balrog | 0x00, /* u8 iConfiguration; */ |
138 | a7954218 | balrog | 0x80, /* u8 bmAttributes; |
139 | a7954218 | balrog | Bit 7: must be set,
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140 | a7954218 | balrog | 6: Self-powered,
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141 | a7954218 | balrog | 5: Remote wakeup,
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142 | a7954218 | balrog | 4..0: resvd */
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143 | a7954218 | balrog | 100/2, /* u8 MaxPower; */ |
144 | a7954218 | balrog | |
145 | a7954218 | balrog | /* one interface */
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146 | a7954218 | balrog | 0x09, /* u8 if_bLength; */ |
147 | a7954218 | balrog | 0x04, /* u8 if_bDescriptorType; Interface */ |
148 | a7954218 | balrog | 0x00, /* u8 if_bInterfaceNumber; */ |
149 | a7954218 | balrog | 0x00, /* u8 if_bAlternateSetting; */ |
150 | a7954218 | balrog | 0x02, /* u8 if_bNumEndpoints; */ |
151 | a7954218 | balrog | 0xff, /* u8 if_bInterfaceClass; Vendor Specific */ |
152 | a7954218 | balrog | 0xff, /* u8 if_bInterfaceSubClass; Vendor Specific */ |
153 | a7954218 | balrog | 0xff, /* u8 if_bInterfaceProtocol; Vendor Specific */ |
154 | a7954218 | balrog | 0x02, /* u8 if_iInterface; */ |
155 | a7954218 | balrog | |
156 | a7954218 | balrog | /* Bulk-In endpoint */
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157 | a7954218 | balrog | 0x07, /* u8 ep_bLength; */ |
158 | a7954218 | balrog | 0x05, /* u8 ep_bDescriptorType; Endpoint */ |
159 | a7954218 | balrog | 0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
160 | a7954218 | balrog | 0x02, /* u8 ep_bmAttributes; Bulk */ |
161 | a7954218 | balrog | 0x40, 0x00, /* u16 ep_wMaxPacketSize; */ |
162 | a7954218 | balrog | 0x00, /* u8 ep_bInterval; */ |
163 | a7954218 | balrog | |
164 | a7954218 | balrog | /* Bulk-Out endpoint */
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165 | a7954218 | balrog | 0x07, /* u8 ep_bLength; */ |
166 | a7954218 | balrog | 0x05, /* u8 ep_bDescriptorType; Endpoint */ |
167 | a7954218 | balrog | 0x02, /* u8 ep_bEndpointAddress; OUT Endpoint 2 */ |
168 | a7954218 | balrog | 0x02, /* u8 ep_bmAttributes; Bulk */ |
169 | a7954218 | balrog | 0x40, 0x00, /* u16 ep_wMaxPacketSize; */ |
170 | a7954218 | balrog | 0x00 /* u8 ep_bInterval; */ |
171 | a7954218 | balrog | }; |
172 | a7954218 | balrog | |
173 | a7954218 | balrog | static void usb_serial_reset(USBSerialState *s) |
174 | a7954218 | balrog | { |
175 | a7954218 | balrog | /* TODO: Set flow control to none */
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176 | a7954218 | balrog | s->event_chr = 0x0d;
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177 | a7954218 | balrog | s->event_trigger = 0;
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178 | a7954218 | balrog | s->recv_ptr = 0;
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179 | a7954218 | balrog | s->recv_used = 0;
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180 | a7954218 | balrog | /* TODO: purge in char driver */
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181 | a7954218 | balrog | s->lines &= ~(FTDI_DTR|FTDI_RTS); |
182 | a7954218 | balrog | } |
183 | a7954218 | balrog | |
184 | a7954218 | balrog | static void usb_serial_handle_reset(USBDevice *dev) |
185 | a7954218 | balrog | { |
186 | a7954218 | balrog | USBSerialState *s = (USBSerialState *)dev; |
187 | a7954218 | balrog | |
188 | a7954218 | balrog | DPRINTF("Reset\n");
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189 | a7954218 | balrog | |
190 | a7954218 | balrog | usb_serial_reset(s); |
191 | a7954218 | balrog | /* TODO: Reset char device, send BREAK? */
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192 | a7954218 | balrog | } |
193 | a7954218 | balrog | |
194 | a7954218 | balrog | static int usb_serial_handle_control(USBDevice *dev, int request, int value, |
195 | a7954218 | balrog | int index, int length, uint8_t *data) |
196 | a7954218 | balrog | { |
197 | a7954218 | balrog | USBSerialState *s = (USBSerialState *)dev; |
198 | a7954218 | balrog | int ret = 0; |
199 | a7954218 | balrog | |
200 | a7954218 | balrog | //DPRINTF("got control %x, value %x\n",request, value);
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201 | a7954218 | balrog | switch (request) {
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202 | a7954218 | balrog | case DeviceRequest | USB_REQ_GET_STATUS:
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203 | a7954218 | balrog | data[0] = (0 << USB_DEVICE_SELF_POWERED) | |
204 | a7954218 | balrog | (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
205 | a7954218 | balrog | data[1] = 0x00; |
206 | a7954218 | balrog | ret = 2;
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207 | a7954218 | balrog | break;
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208 | a7954218 | balrog | case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
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209 | a7954218 | balrog | if (value == USB_DEVICE_REMOTE_WAKEUP) {
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210 | a7954218 | balrog | dev->remote_wakeup = 0;
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211 | a7954218 | balrog | } else {
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212 | a7954218 | balrog | goto fail;
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213 | a7954218 | balrog | } |
214 | a7954218 | balrog | ret = 0;
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215 | a7954218 | balrog | break;
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216 | a7954218 | balrog | case DeviceOutRequest | USB_REQ_SET_FEATURE:
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217 | a7954218 | balrog | if (value == USB_DEVICE_REMOTE_WAKEUP) {
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218 | a7954218 | balrog | dev->remote_wakeup = 1;
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219 | a7954218 | balrog | } else {
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220 | a7954218 | balrog | goto fail;
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221 | a7954218 | balrog | } |
222 | a7954218 | balrog | ret = 0;
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223 | a7954218 | balrog | break;
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224 | a7954218 | balrog | case DeviceOutRequest | USB_REQ_SET_ADDRESS:
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225 | a7954218 | balrog | dev->addr = value; |
226 | a7954218 | balrog | ret = 0;
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227 | a7954218 | balrog | break;
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228 | a7954218 | balrog | case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
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229 | a7954218 | balrog | switch(value >> 8) { |
230 | a7954218 | balrog | case USB_DT_DEVICE:
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231 | a7954218 | balrog | memcpy(data, qemu_serial_dev_descriptor, |
232 | a7954218 | balrog | sizeof(qemu_serial_dev_descriptor));
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233 | a7954218 | balrog | data[8] = s->vendorid & 0xff; |
234 | a7954218 | balrog | data[9] = ((s->vendorid) >> 8) & 0xff; |
235 | a7954218 | balrog | data[10] = s->productid & 0xff; |
236 | a7954218 | balrog | data[11] = ((s->productid) >> 8) & 0xff; |
237 | a7954218 | balrog | ret = sizeof(qemu_serial_dev_descriptor);
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238 | a7954218 | balrog | break;
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239 | a7954218 | balrog | case USB_DT_CONFIG:
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240 | a7954218 | balrog | memcpy(data, qemu_serial_config_descriptor, |
241 | a7954218 | balrog | sizeof(qemu_serial_config_descriptor));
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242 | a7954218 | balrog | ret = sizeof(qemu_serial_config_descriptor);
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243 | a7954218 | balrog | break;
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244 | a7954218 | balrog | case USB_DT_STRING:
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245 | a7954218 | balrog | switch(value & 0xff) { |
246 | a7954218 | balrog | case 0: |
247 | a7954218 | balrog | /* language ids */
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248 | a7954218 | balrog | data[0] = 4; |
249 | a7954218 | balrog | data[1] = 3; |
250 | a7954218 | balrog | data[2] = 0x09; |
251 | a7954218 | balrog | data[3] = 0x04; |
252 | a7954218 | balrog | ret = 4;
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253 | a7954218 | balrog | break;
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254 | a7954218 | balrog | case 1: |
255 | a7954218 | balrog | /* vendor description */
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256 | a7954218 | balrog | ret = set_usb_string(data, "QEMU " QEMU_VERSION);
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257 | a7954218 | balrog | break;
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258 | a7954218 | balrog | case 2: |
259 | a7954218 | balrog | /* product description */
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260 | a7954218 | balrog | ret = set_usb_string(data, "QEMU USB SERIAL");
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261 | a7954218 | balrog | break;
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262 | a7954218 | balrog | case 3: |
263 | a7954218 | balrog | /* serial number */
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264 | a7954218 | balrog | ret = set_usb_string(data, "1");
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265 | a7954218 | balrog | break;
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266 | a7954218 | balrog | default:
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267 | a7954218 | balrog | goto fail;
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268 | a7954218 | balrog | } |
269 | a7954218 | balrog | break;
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270 | a7954218 | balrog | default:
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271 | a7954218 | balrog | goto fail;
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272 | a7954218 | balrog | } |
273 | a7954218 | balrog | break;
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274 | a7954218 | balrog | case DeviceRequest | USB_REQ_GET_CONFIGURATION:
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275 | a7954218 | balrog | data[0] = 1; |
276 | a7954218 | balrog | ret = 1;
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277 | a7954218 | balrog | break;
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278 | a7954218 | balrog | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
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279 | a7954218 | balrog | ret = 0;
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280 | a7954218 | balrog | break;
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281 | a7954218 | balrog | case DeviceRequest | USB_REQ_GET_INTERFACE:
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282 | a7954218 | balrog | data[0] = 0; |
283 | a7954218 | balrog | ret = 1;
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284 | a7954218 | balrog | break;
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285 | a7954218 | balrog | case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
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286 | a7954218 | balrog | ret = 0;
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287 | a7954218 | balrog | break;
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288 | a7954218 | balrog | case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
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289 | a7954218 | balrog | ret = 0;
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290 | a7954218 | balrog | break;
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291 | a7954218 | balrog | |
292 | a7954218 | balrog | /* Class specific requests. */
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293 | a7954218 | balrog | case DeviceOutVendor | FTDI_RESET:
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294 | a7954218 | balrog | switch (value) {
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295 | a7954218 | balrog | case FTDI_RESET_SIO:
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296 | a7954218 | balrog | usb_serial_reset(s); |
297 | a7954218 | balrog | break;
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298 | a7954218 | balrog | case FTDI_RESET_RX:
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299 | a7954218 | balrog | s->recv_ptr = 0;
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300 | a7954218 | balrog | s->recv_used = 0;
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301 | a7954218 | balrog | /* TODO: purge from char device */
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302 | a7954218 | balrog | break;
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303 | a7954218 | balrog | case FTDI_RESET_TX:
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304 | a7954218 | balrog | /* TODO: purge from char device */
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305 | a7954218 | balrog | break;
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306 | a7954218 | balrog | } |
307 | a7954218 | balrog | break;
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308 | a7954218 | balrog | case DeviceOutVendor | FTDI_SET_MDM_CTRL:
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309 | a7954218 | balrog | s->lines = value & FTDI_MDM_CTRL; |
310 | a7954218 | balrog | break;
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311 | a7954218 | balrog | case DeviceOutVendor | FTDI_SET_FLOW_CTRL:
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312 | a7954218 | balrog | /* TODO: ioctl */
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313 | a7954218 | balrog | break;
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314 | a7954218 | balrog | case DeviceOutVendor | FTDI_SET_BAUD: {
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315 | a7954218 | balrog | static const int subdivisors8[8] = { 0, 4, 2, 1, 3, 5, 6, 7 }; |
316 | a7954218 | balrog | int subdivisor8 = subdivisors8[((value & 0xc000) >> 14) |
317 | a7954218 | balrog | | ((index & 1) << 2)]; |
318 | a7954218 | balrog | int divisor = value & 0x3fff; |
319 | a7954218 | balrog | |
320 | a7954218 | balrog | /* chip special cases */
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321 | a7954218 | balrog | if (divisor == 1 && subdivisor8 == 0) |
322 | a7954218 | balrog | subdivisor8 = 4;
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323 | a7954218 | balrog | if (divisor == 0 && subdivisor8 == 0) |
324 | a7954218 | balrog | divisor = 1;
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325 | a7954218 | balrog | |
326 | a7954218 | balrog | s->params.speed = (48000000 / 2) / (8 * divisor + subdivisor8); |
327 | a7954218 | balrog | qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params); |
328 | a7954218 | balrog | break;
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329 | a7954218 | balrog | } |
330 | a7954218 | balrog | case DeviceOutVendor | FTDI_SET_DATA:
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331 | a7954218 | balrog | switch (value & FTDI_PARITY) {
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332 | a7954218 | balrog | case 0: |
333 | a7954218 | balrog | s->params.parity = 'N';
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334 | a7954218 | balrog | break;
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335 | a7954218 | balrog | case FTDI_ODD:
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336 | a7954218 | balrog | s->params.parity = 'O';
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337 | a7954218 | balrog | break;
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338 | a7954218 | balrog | case FTDI_EVEN:
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339 | a7954218 | balrog | s->params.parity = 'E';
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340 | a7954218 | balrog | break;
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341 | a7954218 | balrog | default:
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342 | a7954218 | balrog | DPRINTF("unsupported parity %d\n", value & FTDI_PARITY);
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343 | a7954218 | balrog | goto fail;
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344 | a7954218 | balrog | } |
345 | a7954218 | balrog | switch (value & FTDI_STOP) {
|
346 | a7954218 | balrog | case FTDI_STOP1:
|
347 | a7954218 | balrog | s->params.stop_bits = 1;
|
348 | a7954218 | balrog | break;
|
349 | a7954218 | balrog | case FTDI_STOP2:
|
350 | a7954218 | balrog | s->params.stop_bits = 2;
|
351 | a7954218 | balrog | break;
|
352 | a7954218 | balrog | default:
|
353 | a7954218 | balrog | DPRINTF("unsupported stop bits %d\n", value & FTDI_STOP);
|
354 | a7954218 | balrog | goto fail;
|
355 | a7954218 | balrog | } |
356 | a7954218 | balrog | qemu_chr_ioctl(s->cs, CHR_IOCTL_SERIAL_SET_PARAMS, &s->params); |
357 | a7954218 | balrog | /* TODO: TX ON/OFF */
|
358 | a7954218 | balrog | break;
|
359 | a7954218 | balrog | case DeviceInVendor | FTDI_GET_MDM_ST:
|
360 | a7954218 | balrog | /* TODO: return modem status */
|
361 | a7954218 | balrog | data[0] = 0; |
362 | a7954218 | balrog | ret = 1;
|
363 | a7954218 | balrog | break;
|
364 | a7954218 | balrog | case DeviceOutVendor | FTDI_SET_EVENT_CHR:
|
365 | a7954218 | balrog | /* TODO: handle it */
|
366 | a7954218 | balrog | s->event_chr = value; |
367 | a7954218 | balrog | break;
|
368 | a7954218 | balrog | case DeviceOutVendor | FTDI_SET_ERROR_CHR:
|
369 | a7954218 | balrog | /* TODO: handle it */
|
370 | a7954218 | balrog | s->error_chr = value; |
371 | a7954218 | balrog | break;
|
372 | a7954218 | balrog | case DeviceOutVendor | FTDI_SET_LATENCY:
|
373 | a7954218 | balrog | s->latency = value; |
374 | a7954218 | balrog | break;
|
375 | a7954218 | balrog | case DeviceInVendor | FTDI_GET_LATENCY:
|
376 | a7954218 | balrog | data[0] = s->latency;
|
377 | a7954218 | balrog | ret = 1;
|
378 | a7954218 | balrog | break;
|
379 | a7954218 | balrog | default:
|
380 | a7954218 | balrog | fail:
|
381 | a7954218 | balrog | DPRINTF("got unsupported/bogus control %x, value %x\n", request, value);
|
382 | a7954218 | balrog | ret = USB_RET_STALL; |
383 | a7954218 | balrog | break;
|
384 | a7954218 | balrog | } |
385 | a7954218 | balrog | return ret;
|
386 | a7954218 | balrog | } |
387 | a7954218 | balrog | |
388 | a7954218 | balrog | static int usb_serial_handle_data(USBDevice *dev, USBPacket *p) |
389 | a7954218 | balrog | { |
390 | a7954218 | balrog | USBSerialState *s = (USBSerialState *)dev; |
391 | a7954218 | balrog | int ret = 0; |
392 | a7954218 | balrog | uint8_t devep = p->devep; |
393 | a7954218 | balrog | uint8_t *data = p->data; |
394 | a7954218 | balrog | int len = p->len;
|
395 | a7954218 | balrog | int first_len;
|
396 | a7954218 | balrog | |
397 | a7954218 | balrog | switch (p->pid) {
|
398 | a7954218 | balrog | case USB_TOKEN_OUT:
|
399 | a7954218 | balrog | if (devep != 2) |
400 | a7954218 | balrog | goto fail;
|
401 | a7954218 | balrog | qemu_chr_write(s->cs, data, len); |
402 | a7954218 | balrog | break;
|
403 | a7954218 | balrog | |
404 | a7954218 | balrog | case USB_TOKEN_IN:
|
405 | a7954218 | balrog | if (devep != 1) |
406 | a7954218 | balrog | goto fail;
|
407 | a7954218 | balrog | first_len = RECV_BUF - s->recv_ptr; |
408 | a7954218 | balrog | if (len <= 2) { |
409 | a7954218 | balrog | ret = USB_RET_NAK; |
410 | a7954218 | balrog | break;
|
411 | a7954218 | balrog | } |
412 | a7954218 | balrog | /* TODO: Report serial line status */
|
413 | a7954218 | balrog | *data++ = 0;
|
414 | a7954218 | balrog | *data++ = 0;
|
415 | a7954218 | balrog | len -= 2;
|
416 | a7954218 | balrog | if (len > s->recv_used)
|
417 | a7954218 | balrog | len = s->recv_used; |
418 | a7954218 | balrog | if (!len) {
|
419 | a7954218 | balrog | ret = USB_RET_NAK; |
420 | a7954218 | balrog | break;
|
421 | a7954218 | balrog | } |
422 | a7954218 | balrog | if (first_len > len)
|
423 | a7954218 | balrog | first_len = len; |
424 | a7954218 | balrog | memcpy(data, s->recv_buf + s->recv_ptr, first_len); |
425 | a7954218 | balrog | if (len > first_len)
|
426 | a7954218 | balrog | memcpy(data + first_len, s->recv_buf, len - first_len); |
427 | a7954218 | balrog | s->recv_used -= len; |
428 | a7954218 | balrog | s->recv_ptr = (s->recv_ptr + len) % RECV_BUF; |
429 | a7954218 | balrog | ret = len + 2;
|
430 | a7954218 | balrog | break;
|
431 | a7954218 | balrog | |
432 | a7954218 | balrog | default:
|
433 | a7954218 | balrog | DPRINTF("Bad token\n");
|
434 | a7954218 | balrog | fail:
|
435 | a7954218 | balrog | ret = USB_RET_STALL; |
436 | a7954218 | balrog | break;
|
437 | a7954218 | balrog | } |
438 | a7954218 | balrog | |
439 | a7954218 | balrog | return ret;
|
440 | a7954218 | balrog | } |
441 | a7954218 | balrog | |
442 | a7954218 | balrog | static void usb_serial_handle_destroy(USBDevice *dev) |
443 | a7954218 | balrog | { |
444 | a7954218 | balrog | USBSerialState *s = (USBSerialState *)dev; |
445 | a7954218 | balrog | |
446 | a7954218 | balrog | qemu_chr_close(s->cs); |
447 | a7954218 | balrog | qemu_free(s); |
448 | a7954218 | balrog | } |
449 | a7954218 | balrog | |
450 | a7954218 | balrog | int usb_serial_can_read(void *opaque) |
451 | a7954218 | balrog | { |
452 | a7954218 | balrog | USBSerialState *s = opaque; |
453 | a7954218 | balrog | return RECV_BUF - s->recv_used;
|
454 | a7954218 | balrog | } |
455 | a7954218 | balrog | |
456 | a7954218 | balrog | void usb_serial_read(void *opaque, const uint8_t *buf, int size) |
457 | a7954218 | balrog | { |
458 | a7954218 | balrog | USBSerialState *s = opaque; |
459 | a7954218 | balrog | int first_size = RECV_BUF - s->recv_ptr;
|
460 | a7954218 | balrog | if (first_size > size)
|
461 | a7954218 | balrog | first_size = size; |
462 | a7954218 | balrog | memcpy(s->recv_buf + s->recv_ptr + s->recv_used, buf, first_size); |
463 | a7954218 | balrog | if (size > first_size)
|
464 | a7954218 | balrog | memcpy(s->recv_buf, buf + first_size, size - first_size); |
465 | a7954218 | balrog | s->recv_used += size; |
466 | a7954218 | balrog | } |
467 | a7954218 | balrog | |
468 | a7954218 | balrog | void usb_serial_event(void *opaque, int event) |
469 | a7954218 | balrog | { |
470 | a7954218 | balrog | USBSerialState *s = opaque; |
471 | a7954218 | balrog | |
472 | a7954218 | balrog | switch (event) {
|
473 | a7954218 | balrog | case CHR_EVENT_BREAK:
|
474 | a7954218 | balrog | /* TODO: Send Break to USB */
|
475 | a7954218 | balrog | break;
|
476 | a7954218 | balrog | case CHR_EVENT_FOCUS:
|
477 | a7954218 | balrog | break;
|
478 | a7954218 | balrog | case CHR_EVENT_RESET:
|
479 | a7954218 | balrog | usb_serial_reset(s); |
480 | a7954218 | balrog | /* TODO: Reset USB port */
|
481 | a7954218 | balrog | break;
|
482 | a7954218 | balrog | } |
483 | a7954218 | balrog | } |
484 | a7954218 | balrog | |
485 | a7954218 | balrog | USBDevice *usb_serial_init(const char *filename) |
486 | a7954218 | balrog | { |
487 | a7954218 | balrog | USBSerialState *s; |
488 | a7954218 | balrog | CharDriverState *cdrv; |
489 | a11d070e | balrog | unsigned short vendorid = 0x0403, productid = 0x6001; |
490 | a7954218 | balrog | |
491 | a7954218 | balrog | while (*filename && *filename != ':') { |
492 | a7954218 | balrog | const char *p; |
493 | a7954218 | balrog | char *e;
|
494 | a7954218 | balrog | if (strstart(filename, "vendorid=", &p)) { |
495 | a7954218 | balrog | vendorid = strtol(p, &e, 16);
|
496 | a7954218 | balrog | if (e == p || (*e && *e != ',' && *e != ':')) { |
497 | a7954218 | balrog | printf("bogus vendor ID %s\n", p);
|
498 | a7954218 | balrog | return NULL; |
499 | a7954218 | balrog | } |
500 | a7954218 | balrog | filename = e; |
501 | a7954218 | balrog | } else if (strstart(filename, "productid=", &p)) { |
502 | a7954218 | balrog | productid = strtol(p, &e, 16);
|
503 | a7954218 | balrog | if (e == p || (*e && *e != ',' && *e != ':')) { |
504 | a7954218 | balrog | printf("bogus product ID %s\n", p);
|
505 | a7954218 | balrog | return NULL; |
506 | a7954218 | balrog | } |
507 | a7954218 | balrog | filename = e; |
508 | a7954218 | balrog | } else {
|
509 | a7954218 | balrog | printf("unrecognized serial USB option %s\n", filename);
|
510 | a7954218 | balrog | return NULL; |
511 | a7954218 | balrog | } |
512 | a7954218 | balrog | while(*filename == ',') |
513 | a7954218 | balrog | filename++; |
514 | a7954218 | balrog | } |
515 | a7954218 | balrog | if (!*filename) {
|
516 | a7954218 | balrog | printf("character device specification needed\n");
|
517 | a7954218 | balrog | return NULL; |
518 | a7954218 | balrog | } |
519 | a7954218 | balrog | filename++; |
520 | a7954218 | balrog | s = qemu_mallocz(sizeof(USBSerialState));
|
521 | a7954218 | balrog | if (!s)
|
522 | a7954218 | balrog | return NULL; |
523 | a7954218 | balrog | |
524 | a7954218 | balrog | cdrv = qemu_chr_open(filename); |
525 | a7954218 | balrog | if (!cdrv)
|
526 | a7954218 | balrog | goto fail;
|
527 | a7954218 | balrog | s->cs = cdrv; |
528 | a7954218 | balrog | qemu_chr_add_handlers(cdrv, usb_serial_can_read, usb_serial_read, usb_serial_event, s); |
529 | a7954218 | balrog | |
530 | a7954218 | balrog | s->dev.speed = USB_SPEED_FULL; |
531 | a7954218 | balrog | s->dev.handle_packet = usb_generic_handle_packet; |
532 | a7954218 | balrog | |
533 | a7954218 | balrog | s->dev.handle_reset = usb_serial_handle_reset; |
534 | a7954218 | balrog | s->dev.handle_control = usb_serial_handle_control; |
535 | a7954218 | balrog | s->dev.handle_data = usb_serial_handle_data; |
536 | a7954218 | balrog | s->dev.handle_destroy = usb_serial_handle_destroy; |
537 | a7954218 | balrog | |
538 | a7954218 | balrog | s->vendorid = vendorid; |
539 | a7954218 | balrog | s->productid = productid; |
540 | a7954218 | balrog | |
541 | a7954218 | balrog | snprintf(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Serial(%.16s)", |
542 | a7954218 | balrog | filename); |
543 | a7954218 | balrog | |
544 | a7954218 | balrog | usb_serial_handle_reset((USBDevice *)s); |
545 | a7954218 | balrog | return (USBDevice *)s;
|
546 | a7954218 | balrog | fail:
|
547 | a7954218 | balrog | qemu_free(s); |
548 | a7954218 | balrog | return NULL; |
549 | a7954218 | balrog | } |