1 /* $NetBSD: comvar.h,v 1.11 1997/07/05 20:52:41 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Christopher G. Demetriou 17 * for the NetBSD Project. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 extern int comconsaddr; 34 extern int comconsattached; 35 extern bus_space_tag_t comconstag; 36 extern bus_space_handle_t comconsioh; 37 extern tcflag_t comconscflag; 38 39 /* Hardware flag masks */ 40 #define COM_HW_NOIEN 0x01 41 #define COM_HW_FIFO 0x02 42 #define COM_HW_HAYESP 0x04 43 #define COM_HW_CONSOLE 0x40 44 #define COM_HW_KGDB 0x80 45 46 /* Buffer size for character buffer */ 47 #define RXBUFSIZE 2048 /* More than enough.. */ 48 #define RXBUFMASK (RXBUFSIZE - 1) /* Only iff previous is a power of 2 */ 49 #define RXHIWAT ((RXBUFSIZE * 1) / 4) 50 #define RXLOWAT ((RXBUFSIZE * 3) / 4) 51 52 struct com_softc { 53 struct device sc_dev; 54 void *sc_ih; 55 void *sc_si; 56 struct tty *sc_tty; 57 58 int sc_overflows; 59 int sc_floods; 60 int sc_errors; 61 62 int sc_iobase; 63 64 bus_space_tag_t sc_iot; 65 bus_space_handle_t sc_ioh; 66 bus_space_handle_t sc_hayespioh; 67 68 u_char sc_hwflags; 69 u_char sc_swflags; 70 int sc_fifolen; 71 72 u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, sc_mcr_active, sc_lcr, 73 sc_ier, sc_fifo, sc_dlbl, sc_dlbh; 74 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 75 76 int sc_r_hiwat; 77 int sc_r_lowat; 78 volatile u_int sc_rbget; 79 volatile u_int sc_rbput; 80 volatile u_int sc_rbavail; 81 u_char sc_rbuf[RXBUFSIZE]; 82 u_char sc_lbuf[RXBUFSIZE]; 83 84 u_char *sc_tba; 85 int sc_tbc, 86 sc_heldtbc; 87 88 volatile u_char sc_rx_flags, 89 #define RX_TTY_BLOCKED 0x01 90 #define RX_TTY_OVERFLOWED 0x02 91 #define RX_IBUF_BLOCKED 0x04 92 #define RX_IBUF_OVERFLOWED 0x08 93 #define RX_ANY_BLOCK 0x0f 94 sc_tx_busy, 95 sc_tx_done, 96 sc_tx_stopped, 97 sc_st_check, 98 sc_rx_ready; 99 100 volatile u_char sc_heldchange; 101 }; 102 103 /* Macros to clear/set/test flags. */ 104 #define SET(t, f) (t) |= (f) 105 #define CLR(t, f) (t) &= ~(f) 106 #define ISSET(t, f) ((t) & (f)) 107 108 int comprobe1 __P((bus_space_tag_t, bus_space_handle_t, int)); 109 int comintr __P((void *)); 110 void com_attach_subr __P((struct com_softc *)); 111 void cominit __P((bus_space_tag_t, bus_space_handle_t, int)); 112 113 #ifndef __GENERIC_SOFT_INTERRUPTS 114 #ifdef alpha 115 #define IPL_SERIAL IPL_TTY 116 #define splserial() spltty() 117 #define IPL_SOFTSERIAL IPL_TTY 118 #define splsoftserial() spltty() 119 #endif 120 #endif 121