sys/dev/usbmisc/uftdi/uftdireg.h

   1 /*
   2  * $NetBSD: uftdireg.h,v 1.6 2002/07/11 21:14:28 augustss Exp $
   3  * $FreeBSD: src/sys/dev/usb/uftdireg.h,v 1.1 2002/08/11 23:32:33 joe Exp $
   4  * $DragonFly: src/sys/dev/usbmisc/uftdi/uftdireg.h,v 1.3 2003/12/30 02:01:46 dillon Exp $
   5  */
   6
   7 /*
   8  * Definitions for the FTDI USB Single Port Serial Converter -
   9  * known as FTDI_SIO (Serial Input/Output application of the chipset)
  10  *
  11  * The device is based on the FTDI FT8U100AX chip. It has a DB25 on one side,
  12  * USB on the other.
  13  *
  14  * Thanx to FTDI (http://www.ftdi.co.uk) for so kindly providing details
  15  * of the protocol required to talk to the device and ongoing assistence
  16  * during development.
  17  *
  18  * Bill Ryder - bryder@sgi.com of Silicon Graphics, Inc. is the original
  19  * author of this file.
  20  */
  21 /* Modified by Lennart Augustsson */
  22
  23 /* Vendor Request Interface */
  24 #define FTDI_SIO_RESET          0 /* Reset the port */
  25 #define FTDI_SIO_MODEM_CTRL     1 /* Set the modem control register */
  26 #define FTDI_SIO_SET_FLOW_CTRL  2 /* Set flow control register */
  27 #define FTDI_SIO_SET_BAUD_RATE  3 /* Set baud rate */
  28 #define FTDI_SIO_SET_DATA       4 /* Set the data characteristics of the port */
  29 #define FTDI_SIO_GET_STATUS     5 /* Retrieve current value of status reg */
  30 #define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */
  31 #define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */
  32
  33 /* Port Identifier Table */
  34 #define FTDI_PIT_DEFAULT        0 /* SIOA */
  35 #define FTDI_PIT_SIOA           1 /* SIOA */
  36 #define FTDI_PIT_SIOB           2 /* SIOB */
  37 #define FTDI_PIT_PARALLEL       3 /* Parallel */
  38
  39 enum uftdi_type {
  40         UFTDI_TYPE_SIO,
  41         UFTDI_TYPE_8U232AM
  42 };
  43
  44 /*
  45  * BmRequestType:  0100 0000B
  46  * bRequest:       FTDI_SIO_RESET
  47  * wValue:         Control Value
  48  *                   0 = Reset SIO
  49  *                   1 = Purge RX buffer
  50  *                   2 = Purge TX buffer
  51  * wIndex:         Port
  52  * wLength:        0
  53  * Data:           None
  54  *
  55  * The Reset SIO command has this effect:
  56  *
  57  *    Sets flow control set to 'none'
  58  *    Event char = 0x0d
  59  *    Event trigger = disabled
  60  *    Purge RX buffer
  61  *    Purge TX buffer
  62  *    Clear DTR
  63  *    Clear RTS
  64  *    baud and data format not reset
  65  *
  66  * The Purge RX and TX buffer commands affect nothing except the buffers
  67  *
  68  */
  69 /* FTDI_SIO_RESET */
  70 #define FTDI_SIO_RESET_SIO 0
  71 #define FTDI_SIO_RESET_PURGE_RX 1
  72 #define FTDI_SIO_RESET_PURGE_TX 2
  73
  74
  75 /*
  76  * BmRequestType:  0100 0000B
  77  * bRequest:       FTDI_SIO_SET_BAUDRATE
  78  * wValue:         BaudRate value - see below
  79  * wIndex:         Port
  80  * wLength:        0
  81  * Data:           None
  82  */
  83 /* FTDI_SIO_SET_BAUDRATE */
  84 enum {
  85         ftdi_sio_b300 = 0,
  86         ftdi_sio_b600 = 1,
  87         ftdi_sio_b1200 = 2,
  88         ftdi_sio_b2400 = 3,
  89         ftdi_sio_b4800 = 4,
  90         ftdi_sio_b9600 = 5,
  91         ftdi_sio_b19200 = 6,
  92         ftdi_sio_b38400 = 7,
  93         ftdi_sio_b57600 = 8,
  94         ftdi_sio_b115200 = 9
  95 };
  96
  97 enum {
  98         ftdi_8u232am_b300 = 0x2710,
  99         ftdi_8u232am_b600 = 0x1388,
 100         ftdi_8u232am_b1200 = 0x09c4,
 101         ftdi_8u232am_b2400 = 0x04e2,
 102         ftdi_8u232am_b4800 = 0x0271,
 103         ftdi_8u232am_b9600 = 0x4138,
 104         ftdi_8u232am_b19200 = 0x809c,
 105         ftdi_8u232am_b38400 = 0xc04e,
 106         ftdi_8u232am_b57600 = 0x0034,
 107         ftdi_8u232am_b115200 = 0x001a,
 108         ftdi_8u232am_b230400 = 0x000d,
 109         ftdi_8u232am_b460800 = 0x4006,
 110         ftdi_8u232am_b921600 = 0x8003
 111 };
 112
 113 /*
 114  * BmRequestType:  0100 0000B
 115  * bRequest:       FTDI_SIO_SET_DATA
 116  * wValue:         Data characteristics (see below)
 117  * wIndex:         Port
 118  * wLength:        0
 119  * Data:           No
 120  *
 121  * Data characteristics
 122  *
 123  *   B0..7   Number of data bits
 124  *   B8..10  Parity
 125  *           0 = None
 126  *           1 = Odd
 127  *           2 = Even
 128  *           3 = Mark
 129  *           4 = Space
 130  *   B11..13 Stop Bits
 131  *           0 = 1
 132  *           1 = 1.5
 133  *           2 = 2
 134  *   B14..15 Reserved
 135  *
 136  */
 137 /* FTDI_SIO_SET_DATA */
 138 #define FTDI_SIO_SET_DATA_BITS(n) (n)
 139 #define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8)
 140 #define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8)
 141 #define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8)
 142 #define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8)
 143 #define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8)
 144 #define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11)
 145 #define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11)
 146 #define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11)
 147 #define FTDI_SIO_SET_BREAK (0x1 << 14)
 148
 149
 150 /*
 151  * BmRequestType:   0100 0000B
 152  * bRequest:        FTDI_SIO_MODEM_CTRL
 153  * wValue:          ControlValue (see below)
 154  * wIndex:          Port
 155  * wLength:         0
 156  * Data:            None
 157  *
 158  * NOTE: If the device is in RTS/CTS flow control, the RTS set by this
 159  * command will be IGNORED without an error being returned
 160  * Also - you can not set DTR and RTS with one control message
 161  *
 162  * ControlValue
 163  * B0    DTR state
 164  *          0 = reset
 165  *          1 = set
 166  * B1    RTS state
 167  *          0 = reset
 168  *          1 = set
 169  * B2..7 Reserved
 170  * B8    DTR state enable
 171  *          0 = ignore
 172  *          1 = use DTR state
 173  * B9    RTS state enable
 174  *          0 = ignore
 175  *          1 = use RTS state
 176  * B10..15 Reserved
 177  */
 178 /* FTDI_SIO_MODEM_CTRL */
 179 #define FTDI_SIO_SET_DTR_MASK 0x1
 180 #define FTDI_SIO_SET_DTR_HIGH (1 | ( FTDI_SIO_SET_DTR_MASK  << 8))
 181 #define FTDI_SIO_SET_DTR_LOW  (0 | ( FTDI_SIO_SET_DTR_MASK  << 8))
 182 #define FTDI_SIO_SET_RTS_MASK 0x2
 183 #define FTDI_SIO_SET_RTS_HIGH (2 | ( FTDI_SIO_SET_RTS_MASK << 8))
 184 #define FTDI_SIO_SET_RTS_LOW (0 | ( FTDI_SIO_SET_RTS_MASK << 8))
 185
 186
 187 /*
 188  *   BmRequestType:  0100 0000b
 189  *   bRequest:       FTDI_SIO_SET_FLOW_CTRL
 190  *   wValue:         Xoff/Xon
 191  *   wIndex:         Protocol/Port - hIndex is protocl / lIndex is port
 192  *   wLength:        0
 193  *   Data:           None
 194  *
 195  * hIndex protocol is:
 196  *   B0 Output handshaking using RTS/CTS
 197  *       0 = disabled
 198  *       1 = enabled
 199  *   B1 Output handshaking using DTR/DSR
 200  *       0 = disabled
 201  *       1 = enabled
 202  *   B2 Xon/Xoff handshaking
 203  *       0 = disabled
 204  *       1 = enabled
 205  *
 206  * A value of zero in the hIndex field disables handshaking
 207  *
 208  * If Xon/Xoff handshaking is specified, the hValue field should contain the
 209  * XOFF character and the lValue field contains the XON character.
 210  */
 211 /* FTDI_SIO_SET_FLOW_CTRL */
 212 #define FTDI_SIO_DISABLE_FLOW_CTRL 0x0
 213 #define FTDI_SIO_RTS_CTS_HS 0x1
 214 #define FTDI_SIO_DTR_DSR_HS 0x2
 215 #define FTDI_SIO_XON_XOFF_HS 0x4
 216
 217
 218 /*
 219  *  BmRequestType:   0100 0000b
 220  *  bRequest:        FTDI_SIO_SET_EVENT_CHAR
 221  *  wValue:          Event Char
 222  *  wIndex:          Port
 223  *  wLength:         0
 224  *  Data:            None
 225  *
 226  * wValue:
 227  *   B0..7   Event Character
 228  *   B8      Event Character Processing
 229  *             0 = disabled
 230  *             1 = enabled
 231  *   B9..15  Reserved
 232  *
 233  * FTDI_SIO_SET_EVENT_CHAR
 234  *
 235  * Set the special event character for the specified communications port.
 236  * If the device sees this character it will immediately return the
 237  * data read so far - rather than wait 40ms or until 62 bytes are read
 238  * which is what normally happens.
 239  */
 240
 241
 242
 243 /*
 244  *  BmRequestType:  0100 0000b
 245  *  bRequest:       FTDI_SIO_SET_ERROR_CHAR
 246  *  wValue:         Error Char
 247  *  wIndex:         Port
 248  *  wLength:        0
 249  *  Data:           None
 250  *
 251  *  Error Char
 252  *  B0..7  Error Character
 253  *  B8     Error Character Processing
 254  *           0 = disabled
 255  *           1 = enabled
 256  *  B9..15 Reserved
 257  *
 258  *
 259  * FTDI_SIO_SET_ERROR_CHAR
 260  * Set the parity error replacement character for the specified communications
 261  * port.
 262  */
 263
 264
 265 /*
 266  *   BmRequestType:   1100 0000b
 267  *   bRequest:        FTDI_SIO_GET_MODEM_STATUS
 268  *   wValue:          zero
 269  *   wIndex:          Port
 270  *   wLength:         1
 271  *   Data:            Status
 272  *
 273  * One byte of data is returned
 274  * B0..3 0
 275  * B4    CTS
 276  *         0 = inactive
 277  *         1 = active
 278  * B5    DSR
 279  *         0 = inactive
 280  *         1 = active
 281  * B6    Ring Indicator (RI)
 282  *         0 = inactive
 283  *         1 = active
 284  * B7    Receive Line Signal Detect (RLSD)
 285  *         0 = inactive
 286  *         1 = active
 287  *
 288  * FTDI_SIO_GET_MODEM_STATUS
 289  * Retrieve the current value of the modem status register.
 290  */
 291 #define FTDI_SIO_CTS_MASK 0x10
 292 #define FTDI_SIO_DSR_MASK 0x20
 293 #define FTDI_SIO_RI_MASK  0x40
 294 #define FTDI_SIO_RLSD_MASK 0x80
 295
 296
 297
 298 /*
 299  *
 300  * DATA FORMAT
 301  *
 302  * IN Endpoint
 303  *
 304  * The device reserves the first two bytes of data on this endpoint to contain
 305  * the current values of the modem and line status registers. In the absence of
 306  * data, the device generates a message consisting of these two status bytes
 307  * every 40 ms.
 308  *
 309  * Byte 0: Modem Status
 310  *   NOTE: 4 upper bits have same layout as the MSR register in a 16550
 311  *
 312  * Offset       Description
 313  * B0..3        Port
 314  * B4           Clear to Send (CTS)
 315  * B5           Data Set Ready (DSR)
 316  * B6           Ring Indicator (RI)
 317  * B7           Receive Line Signal Detect (RLSD)
 318  *
 319  * Byte 1: Line Status
 320  *   NOTE: same layout as the LSR register in a 16550
 321  *
 322  * Offset       Description
 323  * B0   Data Ready (DR)
 324  * B1   Overrun Error (OE)
 325  * B2   Parity Error (PE)
 326  * B3   Framing Error (FE)
 327  * B4   Break Interrupt (BI)
 328  * B5   Transmitter Holding Register (THRE)
 329  * B6   Transmitter Empty (TEMT)
 330  * B7   Error in RCVR FIFO
 331  *
 332  *
 333  * OUT Endpoint
 334  *
 335  * This device reserves the first bytes of data on this endpoint contain the
 336  * length and port identifier of the message. For the FTDI USB Serial converter
 337  * the port identifier is always 1.
 338  *
 339  * Byte 0: Port & length
 340  *
 341  * Offset       Description
 342  * B0..1        Port
 343  * B2..7        Length of message - (not including Byte 0)
 344  *
 345  */
 346 #define FTDI_PORT_MASK 0x0f
 347 #define FTDI_MSR_MASK 0xf0
 348 #define FTDI_GET_MSR(p) (((p)[0]) & FTDI_MSR_MASK)
 349 #define FTDI_GET_LSR(p) ((p)[1])
 350 #define FTDI_LSR_MASK (~0x60) /* interesting bits */
 351 #define FTDI_OUT_TAG(len, port) (((len) << 2) | (port))