com_supio.c revision 1.11
1 /* $NetBSD: com_supio.c,v 1.11 1998/08/15 17:47:15 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1991 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)com.c 7.5 (Berkeley) 5/16/91 72 */ 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/ioctl.h> 77 #include <sys/select.h> 78 #include <sys/tty.h> 79 #include <sys/proc.h> 80 #include <sys/user.h> 81 #include <sys/conf.h> 82 #include <sys/file.h> 83 #include <sys/uio.h> 84 #include <sys/kernel.h> 85 #include <sys/syslog.h> 86 #include <sys/types.h> 87 #include <sys/device.h> 88 89 #include <machine/intr.h> 90 #include <machine/bus.h> 91 92 /*#include <dev/isa/isavar.h>*/ 93 #include <dev/ic/comreg.h> 94 #include <dev/ic/comvar.h> 95 96 #include <amiga/dev/supio.h> 97 98 struct comsupio_softc { 99 struct com_softc sc_com; 100 struct isr sc_isr; 101 }; 102 103 int com_supio_match __P((struct device *, struct cfdata *, void *)); 104 void com_supio_attach __P((struct device *, struct device *, void *)); 105 void com_supio_cleanup __P((void *)); 106 107 #if 0 108 static int comconsaddr; 109 static bus_space_handle_t comconsioh; 110 static int comconsattached; 111 static bus_space_tag_t comconstag; 112 static int comconsrate; 113 static tcflag_t comconscflag; 114 #endif 115 116 struct cfattach com_supio_ca = { 117 sizeof(struct comsupio_softc), com_supio_match, com_supio_attach 118 }; 119 120 int 121 com_supio_match(parent, match, aux) 122 struct device *parent; 123 struct cfdata *match; 124 void *aux; 125 { 126 bus_space_tag_t iot; 127 int iobase; 128 int rv = 1; 129 struct supio_attach_args *supa = aux; 130 131 iot = supa->supio_iot; 132 iobase = supa->supio_iobase; 133 134 if (strcmp(supa->supio_name,"com")) 135 return 0; 136 #if 0 137 /* if it's in use as console, it's there. */ 138 if (iobase != comconsaddr || comconsattached) { 139 if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { 140 return 0; 141 } 142 rv = comprobe1(iot, ioh, iobase); 143 bus_space_unmap(iot, ioh, COM_NPORTS); 144 } 145 #endif 146 return (rv); 147 } 148 149 void 150 com_supio_attach(parent, self, aux) 151 struct device *parent, *self; 152 void *aux; 153 { 154 struct comsupio_softc *sc = (void *)self; 155 struct com_softc *csc = &sc->sc_com; 156 int iobase; 157 bus_space_tag_t iot; 158 struct supio_attach_args *supa = aux; 159 u_int16_t needpsl; 160 161 /* 162 * We're living on a superio chip. 163 */ 164 iobase = csc->sc_iobase = supa->supio_iobase; 165 iot = csc->sc_iot = supa->supio_iot; 166 printf(" port 0x%x ipl %d", iobase, supa->supio_ipl); 167 168 if (bus_space_map(iot, iobase, COM_NPORTS, 0, &csc->sc_ioh)) 169 panic("comattach: io mapping failed"); 170 171 csc->sc_frequency = supa->supio_arg; 172 173 com_attach_subr(csc); 174 175 /* XXX this should be really in the interupt stuff */ 176 needpsl = PSL_S | (supa->supio_ipl << 8); 177 178 if (amiga_serialspl < needpsl) { 179 printf("%s: raising amiga_serialspl from 0x%x to 0x%x\n", 180 csc->sc_dev.dv_xname, amiga_serialspl, needpsl); 181 amiga_serialspl = needpsl; 182 } 183 sc->sc_isr.isr_intr = comintr; 184 sc->sc_isr.isr_arg = csc; 185 sc->sc_isr.isr_ipl = supa->supio_ipl; 186 add_isr(&sc->sc_isr); 187 188 /* 189 * Shutdown hook for buggy BIOSs that don't recognize the UART 190 * without a disabled FIFO. 191 */ 192 if (shutdownhook_establish(com_supio_cleanup, csc) == NULL) 193 panic("comsupio: could not establish shutdown hook"); 194 } 195 196 void 197 com_supio_cleanup(arg) 198 void *arg; 199 { 200 struct com_softc *sc = arg; 201 202 if (ISSET(sc->sc_hwflags, COM_HW_FIFO)) 203 bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0); 204 } 205
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