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/* $OpenBSD: dhureg.h,v 1.4 2003/04/06 01:33:32 hugh Exp $ */
/* $NetBSD: dhureg.h,v 1.4 1999/05/28 20:17:29 ragge Exp $ */
/*
* Copyright (c) 1996 Ken C. Wellsch. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef notdef
union w_b
{
u_short word;
struct {
u_char byte_lo;
u_char byte_hi;
} bytes;
};
struct DHUregs
{
volatile union w_b u_csr; /* Control/Status Register (R/W) */
volatile u_short dhu_rbuf; /* Receive Buffer (R only) */
#define dhu_txchar dhu_rbuf /* Transmit Character (W only) */
volatile u_short dhu_lpr; /* Line Parameter Register (R/W) */
volatile u_short dhu_stat; /* Line Status (R only) */
volatile u_short dhu_lnctrl; /* Line Control (R/W) */
volatile u_short dhu_tbufad1; /* Transmit Buffer Address 1 (R/W) */
volatile u_short dhu_tbufad2; /* Transmit Buffer Address 2 (R/W) */
volatile u_short dhu_tbufcnt; /* Transmit Buffer Count (R/W) */
};
#define dhu_csr u_csr.word
#define dhu_csr_lo u_csr.bytes.byte_lo
#define dhu_csr_hi u_csr.bytes.byte_hi
typedef struct DHUregs dhuregs;
#endif
#define DHU_UBA_CSR 0
#define DHU_UBA_CSR_HI 1
#define DHU_UBA_RBUF 2
#define DHU_UBA_TXCHAR 2
#define DHU_UBA_RXTIME DHU_UBA_TXCHAR /* on a real dhu only */
#define DHU_UBA_LPR 4
#define DHU_UBA_STAT 6
#define DHU_UBA_FIFO DHU_UBA_STAT /* on a real dhu only */
#define DHU_UBA_LNCTRL 8
#define DHU_UBA_TBUFAD1 10
#define DHU_UBA_TBUFAD2 12
#define DHU_UBA_TBUFCNT 14
/* CSR bits */
#define DHU_CSR_TX_ACTION 0100000
#define DHU_CSR_TXIE 0040000
#define DHU_CSR_DIAG_FAIL 0020000
#define DHU_CSR_TX_DMA_ERROR 0010000
#define DHU_CSR_TX_LINE_MASK 0007400
#define DHU_CSR_RX_DATA_AVAIL 0000200
#define DHU_CSR_RXIE 0000100
#define DHU_CSR_MASTER_RESET 0000040
#define DHU_CSR_UNUSED 0000020
#define DHU_CSR_CHANNEL_MASK 0000017
/* RBUF bits */
#define DHU_RBUF_DATA_VALID 0100000
#define DHU_RBUF_OVERRUN_ERR 0040000
#define DHU_RBUF_FRAMING_ERR 0020000
#define DHU_RBUF_PARITY_ERR 0010000
#define DHU_RBUF_RX_LINE_MASK 0007400
#define DHU_DIAG_CODE 0070001
#define DHU_MODEM_CODE 0070000
/* TXCHAR bits */
#define DHU_TXCHAR_DATA_VALID 0100000
/* LPR bits */
#define DHU_LPR_B50 0x0
#define DHU_LPR_B75 0x1
#define DHU_LPR_B110 0x2
#define DHU_LPR_B134 0x3
#define DHU_LPR_B150 0x4
#define DHU_LPR_B300 0x5
#define DHU_LPR_B600 0x6
#define DHU_LPR_B1200 0x7
#define DHU_LPR_B1800 0x8
#define DHU_LPR_B2000 0x9
#define DHU_LPR_B2400 0xA
#define DHU_LPR_B4800 0xB
#define DHU_LPR_B7200 0xC
#define DHU_LPR_B9600 0xD
#define DHU_LPR_B19200 0xE
#define DHU_LPR_B38400 0xF
#define DHU_LPR_5_BIT_CHAR 0000000
#define DHU_LPR_6_BIT_CHAR 0000010
#define DHU_LPR_7_BIT_CHAR 0000020
#define DHU_LPR_8_BIT_CHAR 0000030
#define DHU_LPR_PARENB 0000040
#define DHU_LPR_EPAR 0000100
#define DHU_LPR_2_STOP 0000200
/* STAT bits */
#define DHU_STAT_DSR 0100000
#define DHU_STAT_RI 0020000
#define DHU_STAT_DCD 0010000
#define DHU_STAT_CTS 0004000
#define DHU_STAT_MDL 0001000
#define DHU_STAT_DHU 0000400
/* LNCTRL bits */
#define DHU_LNCTRL_DMA_ABORT 0000001
#define DHU_LNCTRL_IAUTO 0000002
#define DHU_LNCTRL_RX_ENABLE 0000004
#define DHU_LNCTRL_BREAK 0000010
#define DHU_LNCTRL_OAUTO 0000020
#define DHU_LNCTRL_FORCE_XOFF 0000040
#define DHU_LNCTRL_LINK_TYPE 0000400
#define DHU_LNCTRL_DTR 0001000
#define DHU_LNCTRL_RTS 0010000
/* TBUFAD2 bits */
#define DHU_TBUFAD2_DMA_START 0000200
#define DHU_TBUFAD2_TX_ENABLE 0100000
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