com_supio.c revision 1.3.2.4
1 /* $NetBSD: com_supio.c,v 1.3.2.4 1997/10/16 01:07:48 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994, 1995, 1996 5 * Charles M. Hannum. All rights reserved. 6 * Copyright (c) 1991 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)com.c 7.5 (Berkeley) 5/16/91 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/ioctl.h> 43 #include <sys/select.h> 44 #include <sys/tty.h> 45 #include <sys/proc.h> 46 #include <sys/user.h> 47 #include <sys/conf.h> 48 #include <sys/file.h> 49 #include <sys/uio.h> 50 #include <sys/kernel.h> 51 #include <sys/syslog.h> 52 #include <sys/types.h> 53 #include <sys/device.h> 54 55 #include <machine/intr.h> 56 #include <machine/bus.h> 57 58 /*#include <dev/isa/isavar.h>*/ 59 #include <dev/ic/comreg.h> 60 #include <dev/ic/comvar.h> 61 62 #include <amiga/dev/supio.h> 63 64 struct comsupio_softc { 65 struct com_softc sc_com; 66 struct isr sc_isr; 67 }; 68 69 int com_supio_match __P((struct device *, struct cfdata *, void *)); 70 void com_supio_attach __P((struct device *, struct device *, void *)); 71 void com_supio_cleanup __P((void *)); 72 73 static int comconsaddr; 74 static bus_space_handle_t comconsioh; 75 #if 0 76 static int comconsattached; 77 static bus_space_tag_t comconstag; 78 static int comconsrate; 79 static tcflag_t comconscflag; 80 #endif 81 82 struct cfattach com_supio_ca = { 83 sizeof(struct comsupio_softc), com_supio_match, com_supio_attach 84 }; 85 86 int 87 com_supio_match(parent, match, aux) 88 struct device *parent; 89 struct cfdata *match; 90 void *aux; 91 { 92 bus_space_tag_t iot; 93 int iobase; 94 int rv = 1; 95 struct supio_attach_args *supa = aux; 96 97 iot = supa->supio_iot; 98 iobase = supa->supio_iobase; 99 100 if (strcmp(supa->supio_name,"com")) 101 return 0; 102 #if 0 103 /* if it's in use as console, it's there. */ 104 if (iobase != comconsaddr || comconsattached) { 105 if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { 106 return 0; 107 } 108 rv = comprobe1(iot, ioh, iobase); 109 bus_space_unmap(iot, ioh, COM_NPORTS); 110 } 111 #endif 112 return (rv); 113 } 114 115 void 116 com_supio_attach(parent, self, aux) 117 struct device *parent, *self; 118 void *aux; 119 { 120 struct comsupio_softc *sc = (void *)self; 121 struct com_softc *csc = &sc->sc_com; 122 int iobase; 123 bus_space_tag_t iot; 124 struct supio_attach_args *supa = aux; 125 u_int16_t needpsl; 126 127 /* 128 * We're living on a superio chip. 129 */ 130 iobase = csc->sc_iobase = supa->supio_iobase; 131 iot = csc->sc_iot = supa->supio_iot; 132 if (iobase != comconsaddr) { 133 if (bus_space_map(iot, iobase, COM_NPORTS, 0, &csc->sc_ioh)) 134 panic("comattach: io mapping failed"); 135 } else 136 csc->sc_ioh = comconsioh; 137 138 csc->sc_frequency = supa->supio_arg; 139 140 printf(" port 0x%x", iobase); 141 com_attach_subr(csc); 142 143 /* XXX this should be really in the interupt stuff */ 144 needpsl = PSL_S | (supa->supio_ipl << 8); 145 146 if (amiga_ttyspl < needpsl) { 147 printf("%s: raising amiga_ttyspl from 0x%x to 0x%x\n", 148 csc->sc_dev.dv_xname, amiga_ttyspl, needpsl); 149 amiga_ttyspl = needpsl; 150 } 151 sc->sc_isr.isr_intr = comintr; 152 sc->sc_isr.isr_arg = csc; 153 sc->sc_isr.isr_ipl = supa->supio_ipl; 154 add_isr(&sc->sc_isr); 155 156 /* 157 * Shutdown hook for buggy BIOSs that don't recognize the UART 158 * without a disabled FIFO. 159 */ 160 if (shutdownhook_establish(com_supio_cleanup, csc) == NULL) 161 panic("comsupio: could not establish shutdown hook"); 162 } 163 164 void 165 com_supio_cleanup(arg) 166 void *arg; 167 { 168 struct com_softc *sc = arg; 169 170 if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) 171 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); 172 } 173
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