moxa_isa.c revision 1.1.2.2
1 1.1.2.2 bouyer /* $NetBSD: moxa_isa.c,v 1.1.2.2 2000/11/22 16:03:47 bouyer Exp $ */ 2 1.1.2.2 bouyer 3 1.1.2.2 bouyer /* 4 1.1.2.2 bouyer * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 1.1.2.2 bouyer * Copyright (c) 1995 Charles M. Hannum. All rights reserved. 6 1.1.2.2 bouyer * 7 1.1.2.2 bouyer * This code is derived from public-domain software written by 8 1.1.2.2 bouyer * Roland McGrath. 9 1.1.2.2 bouyer * 10 1.1.2.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 bouyer * modification, are permitted provided that the following conditions 12 1.1.2.2 bouyer * are met: 13 1.1.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.1.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 bouyer * must display the following acknowledgement: 20 1.1.2.2 bouyer * This product includes software developed by Charles M. Hannum. 21 1.1.2.2 bouyer * 4. The name of the author may not be used to endorse or promote products 22 1.1.2.2 bouyer * derived from this software without specific prior written permission. 23 1.1.2.2 bouyer * 24 1.1.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 1.1.2.2 bouyer * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 1.1.2.2 bouyer * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 1.1.2.2 bouyer * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 1.1.2.2 bouyer * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 1.1.2.2 bouyer * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 1.1.2.2 bouyer * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 1.1.2.2 bouyer * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 1.1.2.2 bouyer * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 1.1.2.2 bouyer * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 1.1.2.2 bouyer */ 35 1.1.2.2 bouyer 36 1.1.2.2 bouyer #include <sys/param.h> 37 1.1.2.2 bouyer #include <sys/systm.h> 38 1.1.2.2 bouyer #include <sys/device.h> 39 1.1.2.2 bouyer #include <sys/termios.h> 40 1.1.2.2 bouyer 41 1.1.2.2 bouyer #include <machine/bus.h> 42 1.1.2.2 bouyer #include <machine/intr.h> 43 1.1.2.2 bouyer 44 1.1.2.2 bouyer #include <dev/ic/comreg.h> 45 1.1.2.2 bouyer #include <dev/ic/comvar.h> 46 1.1.2.2 bouyer 47 1.1.2.2 bouyer #include <dev/isa/isavar.h> 48 1.1.2.2 bouyer #include <dev/isa/com_multi.h> 49 1.1.2.2 bouyer 50 1.1.2.2 bouyer #define NSLAVES 8 51 1.1.2.2 bouyer 52 1.1.2.2 bouyer struct moxa_isa_softc { 53 1.1.2.2 bouyer struct device sc_dev; 54 1.1.2.2 bouyer void *sc_ih; 55 1.1.2.2 bouyer 56 1.1.2.2 bouyer bus_space_tag_t sc_iot; 57 1.1.2.2 bouyer int sc_iobase; 58 1.1.2.2 bouyer 59 1.1.2.2 bouyer int sc_alive; /* mask of slave units attached */ 60 1.1.2.2 bouyer void *sc_slaves[NSLAVES]; /* com device unit numbers */ 61 1.1.2.2 bouyer bus_space_handle_t sc_slaveioh[NSLAVES]; 62 1.1.2.2 bouyer }; 63 1.1.2.2 bouyer 64 1.1.2.2 bouyer int moxa_isaprobe __P((struct device *, struct cfdata *, void *)); 65 1.1.2.2 bouyer void moxa_isaattach __P((struct device *, struct device *, void *)); 66 1.1.2.2 bouyer int moxa_isaintr __P((void *)); 67 1.1.2.2 bouyer int moxa_isaprint __P((void *, const char *)); 68 1.1.2.2 bouyer 69 1.1.2.2 bouyer struct cfattach moxa_isa_ca = { 70 1.1.2.2 bouyer sizeof(struct moxa_isa_softc), moxa_isaprobe, moxa_isaattach 71 1.1.2.2 bouyer }; 72 1.1.2.2 bouyer 73 1.1.2.2 bouyer int 74 1.1.2.2 bouyer moxa_isaprobe(parent, self, aux) 75 1.1.2.2 bouyer struct device *parent; 76 1.1.2.2 bouyer struct cfdata *self; 77 1.1.2.2 bouyer void *aux; 78 1.1.2.2 bouyer { 79 1.1.2.2 bouyer struct isa_attach_args *ia = aux; 80 1.1.2.2 bouyer int iobase = ia->ia_iobase; 81 1.1.2.2 bouyer bus_space_tag_t iot = ia->ia_iot; 82 1.1.2.2 bouyer bus_space_handle_t ioh; 83 1.1.2.2 bouyer int i, rv = 1; 84 1.1.2.2 bouyer 85 1.1.2.2 bouyer /* 86 1.1.2.2 bouyer * Do the normal com probe for the first UART and assume 87 1.1.2.2 bouyer * its presence, and the ability to map the other UARTS, 88 1.1.2.2 bouyer * means there is a multiport board there. 89 1.1.2.2 bouyer * XXX Needs more robustness. 90 1.1.2.2 bouyer */ 91 1.1.2.2 bouyer 92 1.1.2.2 bouyer /* Disallow wildcarded i/o address. */ 93 1.1.2.2 bouyer if (ia->ia_iobase == ISACF_PORT_DEFAULT) 94 1.1.2.2 bouyer return (0); 95 1.1.2.2 bouyer 96 1.1.2.2 bouyer /* if the first port is in use as console, then it. */ 97 1.1.2.2 bouyer if (com_is_console(iot, iobase, 0)) 98 1.1.2.2 bouyer goto checkmappings; 99 1.1.2.2 bouyer 100 1.1.2.2 bouyer if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { 101 1.1.2.2 bouyer rv = 0; 102 1.1.2.2 bouyer goto out; 103 1.1.2.2 bouyer } 104 1.1.2.2 bouyer rv = comprobe1(iot, ioh); 105 1.1.2.2 bouyer bus_space_unmap(iot, ioh, COM_NPORTS); 106 1.1.2.2 bouyer if (rv == 0) 107 1.1.2.2 bouyer goto out; 108 1.1.2.2 bouyer 109 1.1.2.2 bouyer checkmappings: 110 1.1.2.2 bouyer for (i = 1; i < NSLAVES; i++) { 111 1.1.2.2 bouyer iobase += COM_NPORTS; 112 1.1.2.2 bouyer 113 1.1.2.2 bouyer if (com_is_console(iot, iobase, 0)) 114 1.1.2.2 bouyer continue; 115 1.1.2.2 bouyer 116 1.1.2.2 bouyer if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { 117 1.1.2.2 bouyer rv = 0; 118 1.1.2.2 bouyer goto out; 119 1.1.2.2 bouyer } 120 1.1.2.2 bouyer bus_space_unmap(iot, ioh, COM_NPORTS); 121 1.1.2.2 bouyer } 122 1.1.2.2 bouyer 123 1.1.2.2 bouyer out: 124 1.1.2.2 bouyer if (rv) 125 1.1.2.2 bouyer ia->ia_iosize = NSLAVES * COM_NPORTS; 126 1.1.2.2 bouyer return (rv); 127 1.1.2.2 bouyer } 128 1.1.2.2 bouyer 129 1.1.2.2 bouyer int 130 1.1.2.2 bouyer moxa_isaprint(aux, pnp) 131 1.1.2.2 bouyer void *aux; 132 1.1.2.2 bouyer const char *pnp; 133 1.1.2.2 bouyer { 134 1.1.2.2 bouyer struct commulti_attach_args *ca = aux; 135 1.1.2.2 bouyer 136 1.1.2.2 bouyer if (pnp) 137 1.1.2.2 bouyer printf("com at %s", pnp); 138 1.1.2.2 bouyer printf(" slave %d", ca->ca_slave); 139 1.1.2.2 bouyer return (UNCONF); 140 1.1.2.2 bouyer } 141 1.1.2.2 bouyer 142 1.1.2.2 bouyer void 143 1.1.2.2 bouyer moxa_isaattach(parent, self, aux) 144 1.1.2.2 bouyer struct device *parent, *self; 145 1.1.2.2 bouyer void *aux; 146 1.1.2.2 bouyer { 147 1.1.2.2 bouyer struct moxa_isa_softc *sc = (void *)self; 148 1.1.2.2 bouyer struct isa_attach_args *ia = aux; 149 1.1.2.2 bouyer struct commulti_attach_args ca; 150 1.1.2.2 bouyer bus_space_tag_t iot = ia->ia_iot; 151 1.1.2.2 bouyer int i, iobase; 152 1.1.2.2 bouyer 153 1.1.2.2 bouyer printf("\n"); 154 1.1.2.2 bouyer 155 1.1.2.2 bouyer sc->sc_iot = ia->ia_iot; 156 1.1.2.2 bouyer sc->sc_iobase = ia->ia_iobase; 157 1.1.2.2 bouyer 158 1.1.2.2 bouyer for (i = 0; i < NSLAVES; i++) { 159 1.1.2.2 bouyer iobase = sc->sc_iobase + i * COM_NPORTS; 160 1.1.2.2 bouyer if (!com_is_console(iot, iobase, &sc->sc_slaveioh[i]) && 161 1.1.2.2 bouyer bus_space_map(iot, iobase, COM_NPORTS, 0, 162 1.1.2.2 bouyer &sc->sc_slaveioh[i])) { 163 1.1.2.2 bouyer printf("%s: can't map i/o space for slave %d\n", 164 1.1.2.2 bouyer sc->sc_dev.dv_xname, i); 165 1.1.2.2 bouyer return; 166 1.1.2.2 bouyer } 167 1.1.2.2 bouyer } 168 1.1.2.2 bouyer 169 1.1.2.2 bouyer for (i = 0; i < NSLAVES; i++) { 170 1.1.2.2 bouyer ca.ca_slave = i; 171 1.1.2.2 bouyer ca.ca_iot = sc->sc_iot; 172 1.1.2.2 bouyer ca.ca_ioh = sc->sc_slaveioh[i]; 173 1.1.2.2 bouyer ca.ca_iobase = sc->sc_iobase + i * COM_NPORTS; 174 1.1.2.2 bouyer ca.ca_noien = 1; 175 1.1.2.2 bouyer 176 1.1.2.2 bouyer sc->sc_slaves[i] = config_found(self, &ca, moxa_isaprint); 177 1.1.2.2 bouyer if (sc->sc_slaves[i] != NULL) 178 1.1.2.2 bouyer sc->sc_alive |= 1 << i; 179 1.1.2.2 bouyer } 180 1.1.2.2 bouyer 181 1.1.2.2 bouyer sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 182 1.1.2.2 bouyer IPL_SERIAL, moxa_isaintr, sc); 183 1.1.2.2 bouyer } 184 1.1.2.2 bouyer 185 1.1.2.2 bouyer int 186 1.1.2.2 bouyer moxa_isaintr(arg) 187 1.1.2.2 bouyer void *arg; 188 1.1.2.2 bouyer { 189 1.1.2.2 bouyer struct moxa_isa_softc *sc = arg; 190 1.1.2.2 bouyer int bits; 191 1.1.2.2 bouyer int rv; 192 1.1.2.2 bouyer 193 1.1.2.2 bouyer bits = sc->sc_alive; 194 1.1.2.2 bouyer if (bits == 0) 195 1.1.2.2 bouyer return (0); 196 1.1.2.2 bouyer 197 1.1.2.2 bouyer for (;;rv = 0) { 198 1.1.2.2 bouyer #define TRY(n) \ 199 1.1.2.2 bouyer if (bits & (1 << (n))) \ 200 1.1.2.2 bouyer rv += comintr(sc->sc_slaves[n]); 201 1.1.2.2 bouyer TRY(0); 202 1.1.2.2 bouyer TRY(1); 203 1.1.2.2 bouyer TRY(2); 204 1.1.2.2 bouyer TRY(3); 205 1.1.2.2 bouyer TRY(4); 206 1.1.2.2 bouyer TRY(5); 207 1.1.2.2 bouyer TRY(6); 208 1.1.2.2 bouyer TRY(7); 209 1.1.2.2 bouyer #undef TRY 210 1.1.2.2 bouyer if (rv == 0) 211 1.1.2.2 bouyer return (1); 212 1.1.2.2 bouyer } 213 1.1.2.2 bouyer } 214
Indexes created Thu Oct 02 14:10:14 GMT 2025