1 /* $NetBSD: rtfps.c,v 1.24 1996/08/27 21:59:30 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 5 * Copyright (c) 1995 Charles Hannum. All rights reserved. 6 * 7 * This code is derived from public-domain software written by 8 * Roland McGrath. 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 Charles Hannum. 21 * 4. The name of the author may not be used to endorse or promote products 22 * derived from this software without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 25 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 26 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 27 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 28 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 29 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 33 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/device.h> 39 #include <sys/termios.h> 40 41 #include <machine/bus.h> 42 #include <machine/intr.h> 43 44 #include <dev/isa/isavar.h> 45 #include <dev/isa/comreg.h> 46 #include <dev/isa/comvar.h> 47 48 #define NSLAVES 4 49 50 struct rtfps_softc { 51 struct device sc_dev; 52 void *sc_ih; 53 54 bus_chipset_tag_t sc_bc; 55 int sc_iobase; 56 int sc_irqport; 57 bus_io_handle_t sc_irqioh; 58 59 int sc_alive; /* mask of slave units attached */ 60 void *sc_slaves[NSLAVES]; /* com device unit numbers */ 61 bus_io_handle_t sc_slaveioh[NSLAVES]; 62 }; 63 64 int rtfpsprobe __P((struct device *, void *, void *)); 65 void rtfpsattach __P((struct device *, struct device *, void *)); 66 int rtfpsintr __P((void *)); 67 int rtfpsprint __P((void *, const char *)); 68 69 struct cfattach rtfps_ca = { 70 sizeof(struct rtfps_softc), rtfpsprobe, rtfpsattach 71 }; 72 73 struct cfdriver rtfps_cd = { 74 NULL, "rtfps", DV_TTY 75 }; 76 77 int 78 rtfpsprobe(parent, self, aux) 79 struct device *parent; 80 void *self; 81 void *aux; 82 { 83 struct isa_attach_args *ia = aux; 84 int iobase = ia->ia_iobase; 85 bus_chipset_tag_t bc = ia->ia_bc; 86 bus_io_handle_t ioh; 87 int i, rv = 1; 88 89 /* 90 * Do the normal com probe for the first UART and assume 91 * its presence, and the ability to map the other UARTS, 92 * means there is a multiport board there. 93 * XXX Needs more robustness. 94 */ 95 96 /* if the first port is in use as console, then it. */ 97 if (iobase == comconsaddr && !comconsattached) 98 goto checkmappings; 99 100 if (bus_io_map(bc, iobase, COM_NPORTS, &ioh)) { 101 rv = 0; 102 goto out; 103 } 104 rv = comprobe1(bc, ioh, iobase); 105 bus_io_unmap(bc, ioh, COM_NPORTS); 106 if (rv == 0) 107 goto out; 108 109 checkmappings: 110 for (i = 1; i < NSLAVES; i++) { 111 iobase += COM_NPORTS; 112 113 if (iobase == comconsaddr && !comconsattached) 114 continue; 115 116 if (bus_io_map(bc, iobase, COM_NPORTS, &ioh)) { 117 rv = 0; 118 goto out; 119 } 120 bus_io_unmap(bc, ioh, COM_NPORTS); 121 } 122 123 out: 124 if (rv) 125 ia->ia_iosize = NSLAVES * COM_NPORTS; 126 return (rv); 127 } 128 129 int 130 rtfpsprint(aux, pnp) 131 void *aux; 132 const char *pnp; 133 { 134 struct commulti_attach_args *ca = aux; 135 136 if (pnp) 137 printf("com at %s", pnp); 138 printf(" slave %d", ca->ca_slave); 139 return (UNCONF); 140 } 141 142 void 143 rtfpsattach(parent, self, aux) 144 struct device *parent, *self; 145 void *aux; 146 { 147 struct rtfps_softc *sc = (void *)self; 148 struct isa_attach_args *ia = aux; 149 struct commulti_attach_args ca; 150 static int irqport[] = { 151 IOBASEUNK, IOBASEUNK, IOBASEUNK, IOBASEUNK, 152 IOBASEUNK, IOBASEUNK, IOBASEUNK, IOBASEUNK, 153 IOBASEUNK, 0x2f2, 0x6f2, 0x6f3, 154 IOBASEUNK, IOBASEUNK, IOBASEUNK, IOBASEUNK 155 }; 156 bus_chipset_tag_t bc = ia->ia_bc; 157 int i; 158 159 sc->sc_bc = ia->ia_bc; 160 sc->sc_iobase = ia->ia_iobase; 161 162 if (ia->ia_irq >= 16 || irqport[ia->ia_irq] == IOBASEUNK) 163 panic("rtfpsattach: invalid irq"); 164 sc->sc_irqport = irqport[ia->ia_irq]; 165 166 for (i = 0; i < NSLAVES; i++) 167 if (bus_io_map(bc, sc->sc_iobase + i * COM_NPORTS, COM_NPORTS, 168 &sc->sc_slaveioh[i])) 169 panic("rtfpsattach: couldn't map slave %d", i); 170 if (bus_io_map(bc, sc->sc_irqport, 1, &sc->sc_irqioh)) 171 panic("rtfpsattach: couldn't map irq port at 0x%x\n", 172 sc->sc_irqport); 173 174 bus_io_write_1(bc, sc->sc_irqioh, 0, 0); 175 176 printf("\n"); 177 178 for (i = 0; i < NSLAVES; i++) { 179 ca.ca_slave = i; 180 ca.ca_bc = sc->sc_bc; 181 ca.ca_ioh = sc->sc_slaveioh[i]; 182 ca.ca_iobase = sc->sc_iobase + i * COM_NPORTS; 183 ca.ca_noien = 0; 184 185 sc->sc_slaves[i] = config_found(self, &ca, rtfpsprint); 186 if (sc->sc_slaves[i] != NULL) 187 sc->sc_alive |= 1 << i; 188 } 189 190 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 191 IPL_TTY, rtfpsintr, sc); 192 } 193 194 int 195 rtfpsintr(arg) 196 void *arg; 197 { 198 struct rtfps_softc *sc = arg; 199 bus_chipset_tag_t bc = sc->sc_bc; 200 int alive = sc->sc_alive; 201 202 bus_io_write_1(bc, sc->sc_irqioh, 0, 0); 203 204 #define TRY(n) \ 205 if (alive & (1 << (n))) \ 206 comintr(sc->sc_slaves[n]); 207 TRY(0); 208 TRY(1); 209 TRY(2); 210 TRY(3); 211 #undef TRY 212 213 return (1); 214 } 215