1 /* $OpenBSD: isa.c,v 1.49 2021/10/26 16:29:49 deraadt Exp $ */ 2 /* $NetBSD: isa.c,v 1.85 1996/05/14 00:31:04 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1997, Jason Downs. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS 17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 23 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /*- 30 * Copyright (c) 1993, 1994 Charles Hannum. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by Charles Hannum. 43 * 4. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 #include <sys/param.h> 59 #include <sys/systm.h> 60 #include <sys/kernel.h> 61 #include <sys/conf.h> 62 #include <sys/malloc.h> 63 #include <sys/device.h> 64 #include <sys/extent.h> 65 66 #include <dev/isa/isareg.h> 67 #include <dev/isa/isavar.h> 68 #include <dev/isa/isadmareg.h> 69 70 int isamatch(struct device *, void *, void *); 71 void isaattach(struct device *, struct device *, void *); 72 73 extern int autoconf_verbose; 74 75 struct cfattach isa_ca = { 76 sizeof(struct isa_softc), isamatch, isaattach 77 }; 78 79 struct cfdriver isa_cd = { 80 NULL, "isa", DV_DULL, CD_INDIRECT 81 }; 82 83 int 84 isamatch(struct device *parent, void *match, void *aux) 85 { 86 struct cfdata *cf = match; 87 struct isabus_attach_args *iba = aux; 88 89 if (strcmp(iba->iba_busname, cf->cf_driver->cd_name)) 90 return (0); 91 92 /* XXX check other indicators */ 93 94 return (1); 95 } 96 97 void 98 isaattach(struct device *parent, struct device *self, void *aux) 99 { 100 struct isa_softc *sc = (struct isa_softc *)self; 101 struct isabus_attach_args *iba = aux; 102 103 isa_attach_hook(parent, self, iba); 104 printf("\n"); 105 106 sc->sc_iot = iba->iba_iot; 107 sc->sc_memt = iba->iba_memt; 108 #if NISADMA > 0 109 sc->sc_dmat = iba->iba_dmat; 110 #endif /* NISADMA > 0 */ 111 sc->sc_ic = iba->iba_ic; 112 113 #if NISAPNP > 0 114 isapnp_isa_attach_hook(sc); 115 #endif 116 117 #if NISADMA > 0 118 /* 119 * Map the registers used by the ISA DMA controller. 120 * XXX Should be done in the isadmaattach routine.. but the delay 121 * XXX port makes it troublesome. Note that these aren't really 122 * XXX valid on ISA busses without DMA. 123 */ 124 if (bus_space_map(sc->sc_iot, IO_DMA1, DMA1_IOSIZE, 0, &sc->sc_dma1h)) 125 panic("isaattach: can't map DMA controller #1"); 126 if (bus_space_map(sc->sc_iot, IO_DMA2, DMA2_IOSIZE, 0, &sc->sc_dma2h)) 127 panic("isaattach: can't map DMA controller #2"); 128 if (bus_space_map(sc->sc_iot, IO_DMAPG, 0xf, 0, &sc->sc_dmapgh)) 129 panic("isaattach: can't map DMA page registers"); 130 131 /* 132 * Map port 0x84, which causes a 1.25us delay when read. 133 * We do this now, since several drivers need it. 134 * XXX this port doesn't exist on all ISA busses... 135 */ 136 if (bus_space_subregion(sc->sc_iot, sc->sc_dmapgh, 0x04, 1, 137 &sc->sc_delaybah)) 138 #else /* NISADMA > 0 */ 139 if (bus_space_map(sc->sc_iot, IO_DMAPG + 0x4, 0x1, 0, 140 &sc->sc_delaybah)) 141 #endif /* NISADMA > 0 */ 142 panic("isaattach: can't map `delay port'"); /* XXX */ 143 144 TAILQ_INIT(&sc->sc_subdevs); 145 config_scan(isascan, self); 146 } 147 148 int 149 isaprint(void *aux, const char *isa) 150 { 151 struct isa_attach_args *ia = aux; 152 int irq, nirq; 153 int dma, ndma; 154 155 if (ia->ia_iosize) 156 printf(" port 0x%x", ia->ia_iobase); 157 if (ia->ia_iosize > 1) 158 printf("/%d", ia->ia_iosize); 159 160 if (ia->ia_msize) 161 printf(" iomem 0x%x", ia->ia_maddr); 162 if (ia->ia_msize > 1) 163 printf("/%d", ia->ia_msize); 164 165 nirq = ia->ipa_nirq; 166 if (nirq < 0 || nirq > nitems(ia->ipa_irq)) 167 nirq = 1; 168 for (irq = 0; irq < nirq; irq++) 169 if (ia->ipa_irq[irq].num != IRQUNK) 170 printf(" irq %d", ia->ipa_irq[irq].num); 171 172 ndma = ia->ipa_ndrq; 173 if (ndma < 0 || ndma > nitems(ia->ipa_drq)) 174 ndma = 2; 175 for (dma = 0; dma < ndma; dma++) 176 if (ia->ipa_drq[dma].num != DRQUNK) { 177 if (dma == 0) 178 printf(" drq"); 179 else 180 printf(" drq%d", dma + 1); 181 printf(" %d", ia->ipa_drq[dma].num); 182 } 183 184 return (UNCONF); 185 } 186 187 void 188 isascan(struct device *parent, void *match) 189 { 190 struct isa_softc *sc = (struct isa_softc *)parent; 191 struct device *dev = match; 192 struct cfdata *cf = dev->dv_cfdata; 193 struct isa_attach_args ia; 194 195 ia.ia_iot = sc->sc_iot; 196 ia.ia_memt = sc->sc_memt; 197 #if NISADMA > 0 198 ia.ia_dmat = sc->sc_dmat; 199 #endif /* NISADMA > 0 */ 200 ia.ia_ic = sc->sc_ic; 201 ia.ia_iobase = cf->cf_iobase; 202 ia.ia_iosize = 0x666; 203 ia.ia_maddr = cf->cf_maddr; 204 ia.ia_msize = cf->cf_msize; 205 ia.ia_irq = cf->cf_irq == 2 ? 9 : cf->cf_irq; 206 ia.ipa_nirq = ia.ia_irq == IRQUNK ? 0 : 1; 207 ia.ia_drq = cf->cf_drq; 208 ia.ia_drq2 = cf->cf_drq2; 209 ia.ipa_ndrq = 2; 210 ia.ia_delaybah = sc->sc_delaybah; 211 212 if (cf->cf_fstate == FSTATE_STAR) { 213 struct isa_attach_args ia2 = ia; 214 215 if (autoconf_verbose) 216 printf(">>> probing for %s*\n", 217 cf->cf_driver->cd_name); 218 while ((*cf->cf_attach->ca_match)(parent, dev, &ia2) > 0) { 219 #if !defined(__NO_ISA_INTR_CHECK) 220 if ((ia2.ia_irq != IRQUNK) && 221 !isa_intr_check(sc->sc_ic, ia2.ia_irq, IST_EDGE)) { 222 printf("%s%d: irq %d already in use\n", 223 cf->cf_driver->cd_name, cf->cf_unit, 224 ia2.ia_irq); 225 ia2 = ia; 226 break; 227 } 228 #endif 229 230 if (autoconf_verbose) 231 printf(">>> probe for %s* clone into %s%d\n", 232 cf->cf_driver->cd_name, 233 cf->cf_driver->cd_name, cf->cf_unit); 234 if (ia2.ia_iosize == 0x666) { 235 printf("%s: iosize not repaired by driver\n", 236 sc->sc_dev.dv_xname); 237 ia2.ia_iosize = 0; 238 } 239 config_attach(parent, dev, &ia2, isaprint); 240 dev = config_make_softc(parent, cf); 241 #if NISADMA > 0 242 if (ia2.ia_drq != DRQUNK) 243 ISA_DRQ_ALLOC((struct device *)sc, ia2.ia_drq); 244 if (ia2.ia_drq2 != DRQUNK) 245 ISA_DRQ_ALLOC((struct device *)sc, ia2.ia_drq2); 246 #endif /* NISAMDA > 0 */ 247 ia2 = ia; 248 } 249 if (autoconf_verbose) 250 printf(">>> probing for %s* finished\n", 251 cf->cf_driver->cd_name); 252 free(dev, M_DEVBUF, cf->cf_attach->ca_devsize); 253 return; 254 } 255 256 if (autoconf_verbose) 257 printf(">>> probing for %s%d\n", cf->cf_driver->cd_name, 258 cf->cf_unit); 259 if ((*cf->cf_attach->ca_match)(parent, dev, &ia) > 0) { 260 #if !defined(__NO_ISA_INTR_CHECK) 261 if ((ia.ia_irq != IRQUNK) && 262 !isa_intr_check(sc->sc_ic, ia.ia_irq, IST_EDGE)) { 263 printf("%s%d: irq %d already in use\n", 264 cf->cf_driver->cd_name, cf->cf_unit, ia.ia_irq); 265 free(dev, M_DEVBUF, cf->cf_attach->ca_devsize); 266 } else { 267 #endif 268 if (autoconf_verbose) 269 printf(">>> probing for %s%d succeeded\n", 270 cf->cf_driver->cd_name, cf->cf_unit); 271 config_attach(parent, dev, &ia, isaprint); 272 273 #if NISADMA > 0 274 if (ia.ia_drq != DRQUNK) 275 ISA_DRQ_ALLOC((struct device *)sc, ia.ia_drq); 276 if (ia.ia_drq2 != DRQUNK) 277 ISA_DRQ_ALLOC((struct device *)sc, ia.ia_drq2); 278 #endif /* NISAMDA > 0 */ 279 #if !defined(__NO_ISA_INTR_CHECK) 280 } 281 #endif 282 } else { 283 if (autoconf_verbose) 284 printf(">>> probing for %s%d failed\n", 285 cf->cf_driver->cd_name, cf->cf_unit); 286 free(dev, M_DEVBUF, cf->cf_attach->ca_devsize); 287 } 288 } 289 290 char * 291 isa_intr_typename(int type) 292 { 293 294 switch (type) { 295 case IST_NONE: 296 return ("none"); 297 case IST_PULSE: 298 return ("pulsed"); 299 case IST_EDGE: 300 return ("edge-triggered"); 301 case IST_LEVEL: 302 return ("level-triggered"); 303 default: 304 panic("isa_intr_typename: invalid type %d", type); 305 } 306 } 307