rtfps.c revision 1.20
1/* $NetBSD: rtfps.c,v 1.20 1996/04/11 22:29:57 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/device.h> 38 39#ifdef i386 /* XXX */ 40#include <machine/cpu.h> /* XXX */ 41#else /* XXX */ 42#include <machine/intr.h> 43#endif /* XXX */ 44#include <machine/bus.h> 45 46#include <dev/isa/isavar.h> 47#include <dev/isa/comreg.h> 48#include <dev/isa/comvar.h> 49 50#define NSLAVES 4 51 52struct rtfps_softc { 53 struct device sc_dev; 54 void *sc_ih; 55 56 bus_chipset_tag_t sc_bc; 57 int sc_iobase; 58 int sc_irqport; 59 bus_io_handle_t sc_irqioh; 60 61 int sc_alive; /* mask of slave units attached */ 62 void *sc_slaves[NSLAVES]; /* com device unit numbers */ 63 bus_io_handle_t sc_slaveioh[NSLAVES]; 64}; 65 66int rtfpsprobe(); 67void rtfpsattach(); 68int rtfpsintr __P((void *)); 69 70struct cfattach rtfps_ca = { 71 sizeof(struct rtfps_softc), rtfpsprobe, rtfpsattach 72}; 73 74struct cfdriver rtfps_cd = { 75 NULL, "rtfps", DV_TTY 76}; 77 78int 79rtfpsprobe(parent, self, aux) 80 struct device *parent, *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 109checkmappings: 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 123out: 124 if (rv) 125 ia->ia_iosize = NSLAVES * COM_NPORTS; 126 return (rv); 127} 128 129int 130rtfpsprint(aux, pnp) 131 void *aux; 132 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 142void 143rtfpsattach(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 int i, subunit; 157 158 sc->sc_bc = ia->ia_bc; 159 sc->sc_iobase = ia->ia_iobase; 160 161 if (ia->ia_irq >= 16 || irqport[ia->ia_irq] == IOBASEUNK) 162 panic("rtfpsattach: invalid irq"); 163 sc->sc_irqport = irqport[ia->ia_irq]; 164 165 for (i = 0; i < NSLAVES; i++) 166 if (bus_io_map(bc, sc->sc_iobase + i * COM_NPORTS, COM_NPORTS, 167 &sc->sc_slaveioh[i])) 168 panic("rtfpsattach: couldn't map slave %d", i); 169 if (bus_io_map(bc, sc->sc_irqport, 1, &sc->sc_irqioh)) 170 panic("rtfpsattach: couldn't map irq port at 0x%x\n", 171 sc->sc_irqport); 172 173 bus_io_write_1(bc, sc->sc_irqioh, 0, 0); 174 175 printf("\n"); 176 177 for (i = 0; i < NSLAVES; i++) { 178 struct cfdata *match; 179 180 ca.ca_slave = i; 181 ca.ca_bc = sc->sc_bc; 182 ca.ca_ioh = sc->sc_slaveioh[i]; 183 ca.ca_iobase = sc->sc_iobase + i * COM_NPORTS; 184 ca.ca_noien = 0; 185 186 sc->sc_slaves[i] = config_found(self, &ca, rtfpsprint); 187 if (sc->sc_slaves[i] != NULL) 188 sc->sc_alive |= 1 << i; 189 } 190 191 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 192 IPL_TTY, rtfpsintr, sc); 193} 194 195int 196rtfpsintr(arg) 197 void *arg; 198{ 199 struct rtfps_softc *sc = arg; 200 bus_chipset_tag_t bc = sc->sc_bc; 201 int alive = sc->sc_alive; 202 203 bus_io_write_1(bc, sc->sc_irqioh, 0, 0); 204 205#define TRY(n) \ 206 if (alive & (1 << (n))) \ 207 comintr(sc->sc_slaves[n]); 208 TRY(0); 209 TRY(1); 210 TRY(2); 211 TRY(3); 212#undef TRY 213 214 return (1); 215} 216