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Diffstat (limited to 'sys/isa/sioreg.h')
| -rw-r--r-- | sys/isa/sioreg.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/sys/isa/sioreg.h b/sys/isa/sioreg.h new file mode 100644 index 0000000..2a62683 --- /dev/null +++ b/sys/isa/sioreg.h @@ -0,0 +1,113 @@ +/*- + * Copyright (c) 1991 The Regents of the University of California. + * 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. + * + * @(#)comreg.h 7.2 (Berkeley) 5/9/91 + */ + + +/* 16 bit baud rate divisor (lower byte in dca_data, upper in dca_ier) */ +#define COMBRD(x) (1843200 / (16*(x))) + +/* interrupt enable register */ +#define IER_ERXRDY 0x1 +#define IER_ETXRDY 0x2 +#define IER_ERLS 0x4 +#define IER_EMSC 0x8 + +/* interrupt identification register */ +#define IIR_IMASK 0xf +#define IIR_RXTOUT 0xc +#define IIR_RLS 0x6 +#define IIR_RXRDY 0x4 +#define IIR_TXRDY 0x2 +#define IIR_NOPEND 0x1 +#define IIR_MLSC 0x0 +#define IIR_FIFO_MASK 0xc0 /* set if FIFOs are enabled */ + +/* fifo control register */ +#define FIFO_ENABLE 0x01 +#define FIFO_RCV_RST 0x02 +#define FIFO_XMT_RST 0x04 +#define FIFO_DMA_MODE 0x08 +#define FIFO_TRIGGER_1 0x00 +#define FIFO_TRIGGER_4 0x40 +#define FIFO_TRIGGER_8 0x80 +#define FIFO_TRIGGER_14 0xc0 + +/* character format control register */ +#define CFCR_DLAB 0x80 +#define CFCR_SBREAK 0x40 +#define CFCR_PZERO 0x30 +#define CFCR_PONE 0x20 +#define CFCR_PEVEN 0x10 +#define CFCR_PODD 0x00 +#define CFCR_PENAB 0x08 +#define CFCR_STOPB 0x04 +#define CFCR_8BITS 0x03 +#define CFCR_7BITS 0x02 +#define CFCR_6BITS 0x01 +#define CFCR_5BITS 0x00 + +/* modem control register */ +#define MCR_LOOPBACK 0x10 +#define MCR_IENABLE 0x08 +#define MCR_DRS 0x04 +#define MCR_RTS 0x02 +#define MCR_DTR 0x01 + +/* line status register */ +#define LSR_RCV_FIFO 0x80 +#define LSR_TSRE 0x40 +#define LSR_TXRDY 0x20 +#define LSR_BI 0x10 +#define LSR_FE 0x08 +#define LSR_PE 0x04 +#define LSR_OE 0x02 +#define LSR_RXRDY 0x01 +#define LSR_RCV_MASK 0x1f + +/* modem status register */ +#define MSR_DCD 0x80 +#define MSR_RI 0x40 +#define MSR_DSR 0x20 +#define MSR_CTS 0x10 +#define MSR_DDCD 0x08 +#define MSR_TERI 0x04 +#define MSR_DDSR 0x02 +#define MSR_DCTS 0x01 + +/* + * WARNING: Serial console is assumed to be at COM1 address + * and CONUNIT must be 0. + */ +#define CONADDR (0x3f8) +#define CONUNIT (0) |
