315 lines
9.1 KiB
C
315 lines
9.1 KiB
C
/* $NetBSD: uftdireg.h,v 1.6 2002/07/11 21:14:28 augustss Exp $ */
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/* $FreeBSD$ */
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/*
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* Definitions for the FTDI USB Single Port Serial Converter -
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* known as FTDI_SIO (Serial Input/Output application of the chipset)
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*
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* The device is based on the FTDI FT8U100AX chip. It has a DB25 on one side,
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* USB on the other.
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*
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* Thanx to FTDI (http://www.ftdi.co.uk) for so kindly providing details
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* of the protocol required to talk to the device and ongoing assistence
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* during development.
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*
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* Bill Ryder - bryder@sgi.com of Silicon Graphics, Inc. is the original
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* author of this file.
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*/
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/* Modified by Lennart Augustsson */
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/* Vendor Request Interface */
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#define FTDI_SIO_RESET 0 /* Reset the port */
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#define FTDI_SIO_MODEM_CTRL 1 /* Set the modem control register */
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#define FTDI_SIO_SET_FLOW_CTRL 2 /* Set flow control register */
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#define FTDI_SIO_SET_BAUD_RATE 3 /* Set baud rate */
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#define FTDI_SIO_SET_DATA 4 /* Set the data characteristics of the
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* port */
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#define FTDI_SIO_GET_STATUS 5 /* Retrieve current value of status
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* reg */
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#define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */
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#define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */
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#define FTDI_SIO_SET_LATENCY 9 /* Set the latency timer */
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#define FTDI_SIO_GET_LATENCY 10 /* Read the latency timer */
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#define FTDI_SIO_SET_BITMODE 11 /* Set the bit bang I/O mode */
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#define FTDI_SIO_GET_BITMODE 12 /* Read pin states from any mode */
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#define FTDI_SIO_READ_EEPROM 144 /* Read eeprom word */
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#define FTDI_SIO_WRITE_EEPROM 145 /* Write eeprom word */
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#define FTDI_SIO_ERASE_EEPROM 146 /* Erase entire eeprom */
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/* Port Identifier Table */
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#define FTDI_PIT_DEFAULT 0 /* SIOA */
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#define FTDI_PIT_SIOA 1 /* SIOA */
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#define FTDI_PIT_SIOB 2 /* SIOB */
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#define FTDI_PIT_PARALLEL 3 /* Parallel */
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/* Values for driver_info */
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#define UFTDI_JTAG_IFACE(i) (1 << i) /* Flag interface as jtag */
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#define UFTDI_JTAG_IFACES_MAX 8 /* Allow up to 8 jtag intfs */
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#define UFTDI_JTAG_CHECK_STRING 0xff /* Check product names table */
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#define UFTDI_JTAG_MASK 0xff
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/*
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* BmRequestType: 0100 0000B
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* bRequest: FTDI_SIO_RESET
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* wValue: Control Value
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* 0 = Reset SIO
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* 1 = Purge RX buffer
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* 2 = Purge TX buffer
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* wIndex: Port
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* wLength: 0
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* Data: None
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*
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* The Reset SIO command has this effect:
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*
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* Sets flow control set to 'none'
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* Event char = 0x0d
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* Event trigger = disabled
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* Purge RX buffer
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* Purge TX buffer
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* Clear DTR
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* Clear RTS
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* baud and data format not reset
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*
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* The Purge RX and TX buffer commands affect nothing except the buffers
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*/
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/* FTDI_SIO_RESET */
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#define FTDI_SIO_RESET_SIO 0
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#define FTDI_SIO_RESET_PURGE_RX 1
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#define FTDI_SIO_RESET_PURGE_TX 2
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/*
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* BmRequestType: 0100 0000B
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* bRequest: FTDI_SIO_SET_BAUDRATE
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* wValue: BaudRate low bits
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* wIndex: Port and BaudRate high bits
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* wLength: 0
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* Data: None
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*/
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/* FTDI_SIO_SET_BAUDRATE */
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/*
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* BmRequestType: 0100 0000B
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* bRequest: FTDI_SIO_SET_DATA
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* wValue: Data characteristics (see below)
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* wIndex: Port
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* wLength: 0
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* Data: No
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*
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* Data characteristics
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*
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* B0..7 Number of data bits
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* B8..10 Parity
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* 0 = None
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* 1 = Odd
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* 2 = Even
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* 3 = Mark
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* 4 = Space
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* B11..13 Stop Bits
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* 0 = 1
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* 1 = 1.5
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* 2 = 2
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* B14..15 Reserved
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*
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*/
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/* FTDI_SIO_SET_DATA */
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#define FTDI_SIO_SET_DATA_BITS(n) (n)
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#define FTDI_SIO_SET_DATA_PARITY_NONE (0x0 << 8)
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#define FTDI_SIO_SET_DATA_PARITY_ODD (0x1 << 8)
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#define FTDI_SIO_SET_DATA_PARITY_EVEN (0x2 << 8)
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#define FTDI_SIO_SET_DATA_PARITY_MARK (0x3 << 8)
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#define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8)
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#define FTDI_SIO_SET_DATA_STOP_BITS_1 (0x0 << 11)
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#define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11)
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#define FTDI_SIO_SET_DATA_STOP_BITS_2 (0x2 << 11)
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#define FTDI_SIO_SET_BREAK (0x1 << 14)
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/*
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* BmRequestType: 0100 0000B
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* bRequest: FTDI_SIO_MODEM_CTRL
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* wValue: ControlValue (see below)
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* wIndex: Port
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* wLength: 0
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* Data: None
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*
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* NOTE: If the device is in RTS/CTS flow control, the RTS set by this
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* command will be IGNORED without an error being returned
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* Also - you can not set DTR and RTS with one control message
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*
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* ControlValue
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* B0 DTR state
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* 0 = reset
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* 1 = set
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* B1 RTS state
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* 0 = reset
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* 1 = set
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* B2..7 Reserved
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* B8 DTR state enable
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* 0 = ignore
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* 1 = use DTR state
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* B9 RTS state enable
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* 0 = ignore
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* 1 = use RTS state
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* B10..15 Reserved
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*/
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/* FTDI_SIO_MODEM_CTRL */
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#define FTDI_SIO_SET_DTR_MASK 0x1
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#define FTDI_SIO_SET_DTR_HIGH (1 | ( FTDI_SIO_SET_DTR_MASK << 8))
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#define FTDI_SIO_SET_DTR_LOW (0 | ( FTDI_SIO_SET_DTR_MASK << 8))
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#define FTDI_SIO_SET_RTS_MASK 0x2
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#define FTDI_SIO_SET_RTS_HIGH (2 | ( FTDI_SIO_SET_RTS_MASK << 8))
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#define FTDI_SIO_SET_RTS_LOW (0 | ( FTDI_SIO_SET_RTS_MASK << 8))
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/*
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* BmRequestType: 0100 0000b
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* bRequest: FTDI_SIO_SET_FLOW_CTRL
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* wValue: Xoff/Xon
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* wIndex: Protocol/Port - hIndex is protocol / lIndex is port
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* wLength: 0
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* Data: None
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*
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* hIndex protocol is:
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* B0 Output handshaking using RTS/CTS
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* 0 = disabled
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* 1 = enabled
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* B1 Output handshaking using DTR/DSR
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* 0 = disabled
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* 1 = enabled
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* B2 Xon/Xoff handshaking
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* 0 = disabled
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* 1 = enabled
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*
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* A value of zero in the hIndex field disables handshaking
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*
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* If Xon/Xoff handshaking is specified, the hValue field should contain the
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* XOFF character and the lValue field contains the XON character.
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*/
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/* FTDI_SIO_SET_FLOW_CTRL */
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#define FTDI_SIO_DISABLE_FLOW_CTRL 0x0
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#define FTDI_SIO_RTS_CTS_HS 0x1
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#define FTDI_SIO_DTR_DSR_HS 0x2
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#define FTDI_SIO_XON_XOFF_HS 0x4
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/*
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* BmRequestType: 0100 0000b
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* bRequest: FTDI_SIO_SET_EVENT_CHAR
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* wValue: Event Char
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* wIndex: Port
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* wLength: 0
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* Data: None
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*
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* wValue:
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* B0..7 Event Character
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* B8 Event Character Processing
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* 0 = disabled
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* 1 = enabled
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* B9..15 Reserved
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*
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* FTDI_SIO_SET_EVENT_CHAR
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*
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* Set the special event character for the specified communications port.
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* If the device sees this character it will immediately return the
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* data read so far - rather than wait 40ms or until 62 bytes are read
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* which is what normally happens.
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*/
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/*
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* BmRequestType: 0100 0000b
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* bRequest: FTDI_SIO_SET_ERROR_CHAR
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* wValue: Error Char
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* wIndex: Port
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* wLength: 0
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* Data: None
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*
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* Error Char
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* B0..7 Error Character
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* B8 Error Character Processing
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* 0 = disabled
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* 1 = enabled
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* B9..15 Reserved
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* FTDI_SIO_SET_ERROR_CHAR
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* Set the parity error replacement character for the specified communications
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* port.
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*/
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/*
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* BmRequestType: 1100 0000b
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* bRequest: FTDI_SIO_GET_MODEM_STATUS
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* wValue: zero
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* wIndex: Port
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* wLength: 1
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* Data: Status
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*
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* One byte of data is returned
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* B0..3 0
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* B4 CTS
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* 0 = inactive
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* 1 = active
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* B5 DSR
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* 0 = inactive
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* 1 = active
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* B6 Ring Indicator (RI)
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* 0 = inactive
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* 1 = active
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* B7 Receive Line Signal Detect (RLSD)
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* 0 = inactive
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* 1 = active
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*
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* FTDI_SIO_GET_MODEM_STATUS
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* Retrieve the current value of the modem status register.
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*/
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#define FTDI_SIO_CTS_MASK 0x10
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#define FTDI_SIO_DSR_MASK 0x20
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#define FTDI_SIO_RI_MASK 0x40
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#define FTDI_SIO_RLSD_MASK 0x80
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/*
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* DATA FORMAT
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*
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* IN Endpoint
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*
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* The device reserves the first two bytes of data on this endpoint to contain
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* the current values of the modem and line status registers. In the absence of
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* data, the device generates a message consisting of these two status bytes
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* every 40 ms.
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*
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* Byte 0: Modem Status
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* NOTE: 4 upper bits have same layout as the MSR register in a 16550
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*
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* Offset Description
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* B0..3 Port
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* B4 Clear to Send (CTS)
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* B5 Data Set Ready (DSR)
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* B6 Ring Indicator (RI)
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* B7 Receive Line Signal Detect (RLSD)
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*
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* Byte 1: Line Status
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* NOTE: same layout as the LSR register in a 16550
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*
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* Offset Description
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* B0 Data Ready (DR)
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* B1 Overrun Error (OE)
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* B2 Parity Error (PE)
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* B3 Framing Error (FE)
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* B4 Break Interrupt (BI)
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* B5 Transmitter Holding Register (THRE)
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* B6 Transmitter Empty (TEMT)
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* B7 Error in RCVR FIFO
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* OUT Endpoint
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*
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* This device reserves the first bytes of data on this endpoint contain the
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* length and port identifier of the message. For the FTDI USB Serial converter
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* the port identifier is always 1.
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*
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* Byte 0: Port & length
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*
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* Offset Description
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* B0..1 Port
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* B2..7 Length of message - (not including Byte 0)
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*/
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#define FTDI_PORT_MASK 0x0f
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#define FTDI_MSR_MASK 0xf0
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#define FTDI_GET_MSR(p) (((p)[0]) & FTDI_MSR_MASK)
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#define FTDI_GET_LSR(p) ((p)[1])
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#define FTDI_LSR_MASK (~0x60) /* interesting bits */
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#define FTDI_OUT_TAG(len, port) (((len) << 2) | (port))
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