1 /* $NetBSD: uftdireg.h,v 1.6 2002/07/11 21:14:28 augustss Exp $ */
5 * Definitions for the FTDI USB Single Port Serial Converter -
6 * known as FTDI_SIO (Serial Input/Output application of the chipset)
8 * The device is based on the FTDI FT8U100AX chip. It has a DB25 on one side,
11 * Thanx to FTDI (http://www.ftdi.co.uk) for so kindly providing details
12 * of the protocol required to talk to the device and ongoing assistence
15 * Bill Ryder - bryder@sgi.com of Silicon Graphics, Inc. is the original
16 * author of this file.
18 /* Modified by Lennart Augustsson */
20 /* Vendor Request Interface */
21 #define FTDI_SIO_RESET 0 /* Reset the port */
22 #define FTDI_SIO_MODEM_CTRL 1 /* Set the modem control register */
23 #define FTDI_SIO_SET_FLOW_CTRL 2 /* Set flow control register */
24 #define FTDI_SIO_SET_BAUD_RATE 3 /* Set baud rate */
25 #define FTDI_SIO_SET_DATA 4 /* Set the data characteristics of the
27 #define FTDI_SIO_GET_STATUS 5 /* Retrieve current value of status
29 #define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */
30 #define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */
31 #define FTDI_SIO_SET_LATENCY 9 /* Set the latency timer */
32 #define FTDI_SIO_GET_LATENCY 10 /* Read the latency timer */
33 #define FTDI_SIO_SET_BITMODE 11 /* Set the bit bang I/O mode */
34 #define FTDI_SIO_GET_BITMODE 12 /* Read pin states in bit bang mode */
36 /* Port Identifier Table */
37 #define FTDI_PIT_DEFAULT 0 /* SIOA */
38 #define FTDI_PIT_SIOA 1 /* SIOA */
39 #define FTDI_PIT_SIOB 2 /* SIOB */
40 #define FTDI_PIT_PARALLEL 3 /* Parallel */
42 /* Values for driver_info */
43 #define UFTDI_JTAG_IFACE(i) (1 << i) /* Flag interface as jtag */
44 #define UFTDI_JTAG_IFACES_MAX 8 /* Allow up to 8 jtag intfs */
45 #define UFTDI_JTAG_CHECK_STRING 0xff /* Check product names table */
46 #define UFTDI_JTAG_MASK 0xff
49 * BmRequestType: 0100 0000B
50 * bRequest: FTDI_SIO_RESET
51 * wValue: Control Value
59 * The Reset SIO command has this effect:
61 * Sets flow control set to 'none'
63 * Event trigger = disabled
68 * baud and data format not reset
70 * The Purge RX and TX buffer commands affect nothing except the buffers
73 #define FTDI_SIO_RESET_SIO 0
74 #define FTDI_SIO_RESET_PURGE_RX 1
75 #define FTDI_SIO_RESET_PURGE_TX 2
78 * BmRequestType: 0100 0000B
79 * bRequest: FTDI_SIO_SET_BAUDRATE
80 * wValue: BaudRate low bits
81 * wIndex: Port and BaudRate high bits
85 /* FTDI_SIO_SET_BAUDRATE */
88 * BmRequestType: 0100 0000B
89 * bRequest: FTDI_SIO_SET_DATA
90 * wValue: Data characteristics (see below)
95 * Data characteristics
97 * B0..7 Number of data bits
111 /* FTDI_SIO_SET_DATA */
112 #define FTDI_SIO_SET_DATA_BITS(n) (n)
113 #define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8)
114 #define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8)
115 #define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8)
116 #define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8)
117 #define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8)
118 #define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11)
119 #define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11)
120 #define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11)
121 #define FTDI_SIO_SET_BREAK (0x1 << 14)
124 * BmRequestType: 0100 0000B
125 * bRequest: FTDI_SIO_MODEM_CTRL
126 * wValue: ControlValue (see below)
131 * NOTE: If the device is in RTS/CTS flow control, the RTS set by this
132 * command will be IGNORED without an error being returned
133 * Also - you can not set DTR and RTS with one control message
143 * B8 DTR state enable
146 * B9 RTS state enable
151 /* FTDI_SIO_MODEM_CTRL */
152 #define FTDI_SIO_SET_DTR_MASK 0x1
153 #define FTDI_SIO_SET_DTR_HIGH (1 | ( FTDI_SIO_SET_DTR_MASK << 8))
154 #define FTDI_SIO_SET_DTR_LOW (0 | ( FTDI_SIO_SET_DTR_MASK << 8))
155 #define FTDI_SIO_SET_RTS_MASK 0x2
156 #define FTDI_SIO_SET_RTS_HIGH (2 | ( FTDI_SIO_SET_RTS_MASK << 8))
157 #define FTDI_SIO_SET_RTS_LOW (0 | ( FTDI_SIO_SET_RTS_MASK << 8))
160 * BmRequestType: 0100 0000b
161 * bRequest: FTDI_SIO_SET_FLOW_CTRL
163 * wIndex: Protocol/Port - hIndex is protocol / lIndex is port
167 * hIndex protocol is:
168 * B0 Output handshaking using RTS/CTS
171 * B1 Output handshaking using DTR/DSR
174 * B2 Xon/Xoff handshaking
178 * A value of zero in the hIndex field disables handshaking
180 * If Xon/Xoff handshaking is specified, the hValue field should contain the
181 * XOFF character and the lValue field contains the XON character.
183 /* FTDI_SIO_SET_FLOW_CTRL */
184 #define FTDI_SIO_DISABLE_FLOW_CTRL 0x0
185 #define FTDI_SIO_RTS_CTS_HS 0x1
186 #define FTDI_SIO_DTR_DSR_HS 0x2
187 #define FTDI_SIO_XON_XOFF_HS 0x4
190 * BmRequestType: 0100 0000b
191 * bRequest: FTDI_SIO_SET_EVENT_CHAR
198 * B0..7 Event Character
199 * B8 Event Character Processing
204 * FTDI_SIO_SET_EVENT_CHAR
206 * Set the special event character for the specified communications port.
207 * If the device sees this character it will immediately return the
208 * data read so far - rather than wait 40ms or until 62 bytes are read
209 * which is what normally happens.
213 * BmRequestType: 0100 0000b
214 * bRequest: FTDI_SIO_SET_ERROR_CHAR
221 * B0..7 Error Character
222 * B8 Error Character Processing
226 * FTDI_SIO_SET_ERROR_CHAR
227 * Set the parity error replacement character for the specified communications
232 * BmRequestType: 1100 0000b
233 * bRequest: FTDI_SIO_GET_MODEM_STATUS
239 * One byte of data is returned
247 * B6 Ring Indicator (RI)
250 * B7 Receive Line Signal Detect (RLSD)
254 * FTDI_SIO_GET_MODEM_STATUS
255 * Retrieve the current value of the modem status register.
257 #define FTDI_SIO_CTS_MASK 0x10
258 #define FTDI_SIO_DSR_MASK 0x20
259 #define FTDI_SIO_RI_MASK 0x40
260 #define FTDI_SIO_RLSD_MASK 0x80
267 * The device reserves the first two bytes of data on this endpoint to contain
268 * the current values of the modem and line status registers. In the absence of
269 * data, the device generates a message consisting of these two status bytes
272 * Byte 0: Modem Status
273 * NOTE: 4 upper bits have same layout as the MSR register in a 16550
277 * B4 Clear to Send (CTS)
278 * B5 Data Set Ready (DSR)
279 * B6 Ring Indicator (RI)
280 * B7 Receive Line Signal Detect (RLSD)
282 * Byte 1: Line Status
283 * NOTE: same layout as the LSR register in a 16550
287 * B1 Overrun Error (OE)
288 * B2 Parity Error (PE)
289 * B3 Framing Error (FE)
290 * B4 Break Interrupt (BI)
291 * B5 Transmitter Holding Register (THRE)
292 * B6 Transmitter Empty (TEMT)
293 * B7 Error in RCVR FIFO
296 * This device reserves the first bytes of data on this endpoint contain the
297 * length and port identifier of the message. For the FTDI USB Serial converter
298 * the port identifier is always 1.
300 * Byte 0: Port & length
304 * B2..7 Length of message - (not including Byte 0)
306 #define FTDI_PORT_MASK 0x0f
307 #define FTDI_MSR_MASK 0xf0
308 #define FTDI_GET_MSR(p) (((p)[0]) & FTDI_MSR_MASK)
309 #define FTDI_GET_LSR(p) ((p)[1])
310 #define FTDI_LSR_MASK (~0x60) /* interesting bits */
311 #define FTDI_OUT_TAG(len, port) (((len) << 2) | (port))