9448a01404
hardware/software interrupt mechanism for improved performance. Many odd protocols bugs also fixed.
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/* $NetBSD: comvar.h,v 1.8 1997/04/04 20:56:40 mycroft Exp $ */
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/*
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* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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extern int comconsaddr;
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extern int comconsattached;
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extern bus_space_tag_t comconstag;
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extern bus_space_handle_t comconsioh;
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extern tcflag_t comconscflag;
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/* Hardware flag masks */
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#define COM_HW_NOIEN 0x01
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#define COM_HW_FIFO 0x02
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#define COM_HW_HAYESP 0x04
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#define COM_HW_CONSOLE 0x40
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/* Buffer size for character buffer */
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#define RXBUFSIZE 2048 /* More than enough.. */
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#define RXBUFMASK (RXBUFSIZE-1) /* Only iff previous is a power of 2 */
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#define RXHIWAT (RXBUFSIZE >> 2)
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struct com_softc {
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struct device sc_dev;
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void *sc_ih;
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void *sc_si;
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struct tty *sc_tty;
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int sc_overflows;
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int sc_floods;
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int sc_errors;
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int sc_iobase;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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bus_space_handle_t sc_hayespioh;
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u_char sc_hwflags;
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u_char sc_swflags;
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int sc_fifolen;
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u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, sc_mcr_active, sc_lcr,
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sc_ier, sc_fifo, sc_dlbl, sc_dlbh;
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u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd;
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int sc_r_hiwat;
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volatile u_int sc_rbget;
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volatile u_int sc_rbput;
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volatile u_int sc_rbavail;
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u_char sc_rbuf[RXBUFSIZE];
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u_char sc_lbuf[RXBUFSIZE];
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u_char *sc_tba;
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int sc_tbc,
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sc_heldtbc;
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volatile u_char sc_rx_blocked,
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sc_tx_busy,
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sc_tx_done,
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sc_tx_stopped,
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sc_st_check,
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sc_rx_ready;
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volatile u_char sc_heldchange;
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};
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/* Macros to clear/set/test flags. */
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#define SET(t, f) (t) |= (f)
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#define CLR(t, f) (t) &= ~(f)
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#define ISSET(t, f) ((t) & (f))
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int comprobe1 __P((bus_space_tag_t, bus_space_handle_t, int));
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int comintr __P((void *));
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void com_attach_subr __P((struct com_softc *));
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void cominit __P((bus_space_tag_t, bus_space_handle_t, int));
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#ifndef __GENERIC_SOFT_INTERRUPTS
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#ifdef alpha
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#define IPL_SERIAL IPL_TTY
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#define splserial() spltty()
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#define IPL_SOFTSERIAL IPL_TTY
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#define splsoftserial() spltty()
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#endif
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#endif
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#ifndef __BROKEN_INDIRECT_CONFIG
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#define __CGD_INDIRECT_CONFIG
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#endif
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