1 /* $NetBSD: comvar.h,v 1.42 2001/08/27 14:27:01 enami 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 #include "rnd.h" 34 #include "opt_multiprocessor.h" 35 #include "opt_lockdebug.h" 36 #include "opt_com.h" 37 #include "opt_kgdb.h" 38 39 #if NRND > 0 && defined(RND_COM) 40 #include <sys/rnd.h> 41 #endif 42 43 #include <sys/callout.h> 44 #include <sys/timepps.h> 45 #if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(COM_MPLOCK) 46 #include <sys/lock.h> 47 #endif 48 49 int comcnattach __P((bus_space_tag_t, bus_addr_t, int, int, tcflag_t)); 50 51 #ifdef KGDB 52 int com_kgdb_attach __P((bus_space_tag_t, bus_addr_t, int, int, tcflag_t)); 53 #endif 54 55 int com_is_console __P((bus_space_tag_t, bus_addr_t, bus_space_handle_t *)); 56 57 /* Hardware flag masks */ 58 #define COM_HW_NOIEN 0x01 59 #define COM_HW_FIFO 0x02 60 #define COM_HW_HAYESP 0x04 61 #define COM_HW_FLOW 0x08 62 #define COM_HW_DEV_OK 0x20 63 #define COM_HW_CONSOLE 0x40 64 #define COM_HW_KGDB 0x80 65 #define COM_HW_TXFIFO_DISABLE 0x100 66 67 /* Buffer size for character buffer */ 68 #define COM_RING_SIZE 2048 69 70 struct com_softc { 71 struct device sc_dev; 72 void *sc_si; 73 struct tty *sc_tty; 74 75 struct callout sc_diag_callout; 76 77 bus_addr_t sc_iobase; /* XXX ISA-centric name */ 78 int sc_frequency; 79 80 bus_space_tag_t sc_iot; 81 bus_space_handle_t sc_ioh; 82 bus_space_handle_t sc_hayespioh; 83 84 u_int sc_overflows, 85 sc_floods, 86 sc_errors; 87 88 int sc_hwflags, 89 sc_swflags; 90 u_int sc_fifolen; 91 92 u_int sc_r_hiwat, 93 sc_r_lowat; 94 u_char *volatile sc_rbget, 95 *volatile sc_rbput; 96 volatile u_int sc_rbavail; 97 u_char *sc_rbuf, 98 *sc_ebuf; 99 100 u_char *sc_tba; 101 u_int sc_tbc, 102 sc_heldtbc; 103 104 volatile u_char sc_rx_flags, 105 #define RX_TTY_BLOCKED 0x01 106 #define RX_TTY_OVERFLOWED 0x02 107 #define RX_IBUF_BLOCKED 0x04 108 #define RX_IBUF_OVERFLOWED 0x08 109 #define RX_ANY_BLOCK 0x0f 110 sc_tx_busy, 111 sc_tx_done, 112 sc_tx_stopped, 113 sc_st_check, 114 sc_rx_ready; 115 116 volatile u_char sc_heldchange; 117 volatile u_char sc_msr, sc_msr_delta, sc_msr_mask, sc_mcr, 118 sc_mcr_active, sc_lcr, sc_ier, sc_fifo, sc_dlbl, sc_dlbh, sc_efr; 119 u_char sc_mcr_dtr, sc_mcr_rts, sc_msr_cts, sc_msr_dcd; 120 121 #ifdef COM_HAYESP 122 u_char sc_prescaler; 123 #endif 124 125 /* power management hooks */ 126 int (*enable) __P((struct com_softc *)); 127 void (*disable) __P((struct com_softc *)); 128 int enabled; 129 130 /* PPS signal on DCD, with or without inkernel clock disciplining */ 131 u_char sc_ppsmask; /* pps signal mask */ 132 u_char sc_ppsassert; /* pps leading edge */ 133 u_char sc_ppsclear; /* pps trailing edge */ 134 pps_info_t ppsinfo; 135 pps_params_t ppsparam; 136 137 #if NRND > 0 && defined(RND_COM) 138 rndsource_element_t rnd_source; 139 #endif 140 #if (defined(MULTIPROCESSOR) || defined(LOCKDEBUG)) && defined(COM_MPLOCK) 141 struct simplelock sc_lock; 142 #endif 143 }; 144 145 /* Macros to clear/set/test flags. */ 146 #define SET(t, f) (t) |= (f) 147 #define CLR(t, f) (t) &= ~(f) 148 #define ISSET(t, f) ((t) & (f)) 149 150 int comprobe1 __P((bus_space_tag_t, bus_space_handle_t)); 151 int comintr __P((void *)); 152 void com_attach_subr __P((struct com_softc *)); 153 int com_detach __P((struct device *, int)); 154 int com_activate __P((struct device *, enum devact)); 155 156 #ifndef __HAVE_GENERIC_SOFT_INTERRUPTS 157 #ifdef __NO_SOFT_SERIAL_INTERRUPT 158 #define IPL_SERIAL IPL_TTY 159 #define splserial() spltty() 160 #define IPL_SOFTSERIAL IPL_TTY 161 #define splsoftserial() spltty() 162 #endif 163 #endif 164