isa.c revision 1.98
1 /* $NetBSD: isa.c,v 1.98 1998/01/12 09:43:41 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1993, 1994 Charles Hannum. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Charles Hannum. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/conf.h> 36 #include <sys/malloc.h> 37 #include <sys/device.h> 38 39 #include <machine/intr.h> 40 41 #include <dev/isa/isareg.h> 42 #include <dev/isa/isavar.h> 43 #include <dev/isa/isadmareg.h> 44 45 #ifdef __BROKEN_INDIRECT_CONFIG 46 int isamatch __P((struct device *, void *, void *)); 47 #else 48 int isamatch __P((struct device *, struct cfdata *, void *)); 49 #endif 50 void isaattach __P((struct device *, struct device *, void *)); 51 int isaprint __P((void *, const char *)); 52 53 struct cfattach isa_ca = { 54 sizeof(struct isa_softc), isamatch, isaattach 55 }; 56 57 #ifdef __BROKEN_INDIRECT_CONFIG 58 void isascan __P((struct device *, void *)); 59 #else 60 int isasearch __P((struct device *, struct cfdata *, void *)); 61 #endif 62 63 int 64 #ifdef __BROKEN_INDIRECT_CONFIG 65 isamatch(parent, match, aux) 66 #else 67 isamatch(parent, cf, aux) 68 #endif 69 struct device *parent; 70 #ifdef __BROKEN_INDIRECT_CONFIG 71 void *match; 72 #else 73 struct cfdata *cf; 74 #endif 75 void *aux; 76 { 77 #ifdef __BROKEN_INDIRECT_CONFIG 78 struct cfdata *cf = match; 79 #endif 80 struct isabus_attach_args *iba = aux; 81 82 if (strcmp(iba->iba_busname, cf->cf_driver->cd_name)) 83 return (0); 84 85 /* XXX check other indicators */ 86 87 return (1); 88 } 89 90 void 91 isaattach(parent, self, aux) 92 struct device *parent, *self; 93 void *aux; 94 { 95 struct isa_softc *sc = (struct isa_softc *)self; 96 struct isabus_attach_args *iba = aux; 97 98 #ifdef __BROKEN_INDIRECT_CONFIG 99 extern struct cfdriver isa_cd; 100 101 isa_cd.cd_indirect = 1; 102 #endif 103 104 isa_attach_hook(parent, self, iba); 105 printf("\n"); 106 107 sc->sc_iot = iba->iba_iot; 108 sc->sc_memt = iba->iba_memt; 109 sc->sc_dmat = iba->iba_dmat; 110 sc->sc_ic = iba->iba_ic; 111 112 /* 113 * Map the registers used by the ISA DMA controller. 114 */ 115 if (bus_space_map(sc->sc_iot, IO_DMA1, DMA1_IOSIZE, 0, &sc->sc_dma1h)) 116 panic("isaattach: can't map DMA controller #1"); 117 if (bus_space_map(sc->sc_iot, IO_DMA2, DMA2_IOSIZE, 0, &sc->sc_dma2h)) 118 panic("isaattach: can't map DMA controller #2"); 119 if (bus_space_map(sc->sc_iot, IO_DMAPG, 0xf, 0, &sc->sc_dmapgh)) 120 panic("isaattach: can't map DMA page registers"); 121 122 /* 123 * Map port 0x84, which causes a 1.25us delay when read. 124 * We do this now, since several drivers need it. 125 */ 126 if (bus_space_subregion(sc->sc_iot, sc->sc_dmapgh, 0x04, 1, 127 &sc->sc_delaybah)) 128 panic("isaattach: can't map `delay port'"); /* XXX */ 129 130 TAILQ_INIT(&sc->sc_subdevs); 131 #ifdef __BROKEN_INDIRECT_CONFIG 132 config_scan(isascan, self); 133 #else 134 config_search(isasearch, self, NULL); 135 #endif 136 } 137 138 int 139 isaprint(aux, isa) 140 void *aux; 141 const char *isa; 142 { 143 struct isa_attach_args *ia = aux; 144 145 if (ia->ia_iosize) 146 printf(" port 0x%x", ia->ia_iobase); 147 if (ia->ia_iosize > 1) 148 printf("-0x%x", ia->ia_iobase + ia->ia_iosize - 1); 149 if (ia->ia_msize) 150 printf(" iomem 0x%x", ia->ia_maddr); 151 if (ia->ia_msize > 1) 152 printf("-0x%x", ia->ia_maddr + ia->ia_msize - 1); 153 if (ia->ia_irq != IRQUNK) 154 printf(" irq %d", ia->ia_irq); 155 if (ia->ia_drq != DRQUNK) 156 printf(" drq %d", ia->ia_drq); 157 if (ia->ia_drq2 != DRQUNK) 158 printf(" drq2 %d", ia->ia_drq2); 159 return (UNCONF); 160 } 161 162 #ifdef __BROKEN_INDIRECT_CONFIG 163 void 164 isascan(parent, match) 165 struct device *parent; 166 void *match; 167 { 168 struct isa_softc *sc = (struct isa_softc *)parent; 169 struct device *dev = match; 170 struct cfdata *cf = dev->dv_cfdata; 171 struct isa_attach_args ia; 172 173 #if defined(__i386__) 174 if (cf->cf_fstate == FSTATE_STAR) 175 panic("clone devices not supported on ISA bus"); 176 #endif 177 178 ia.ia_iot = sc->sc_iot; 179 ia.ia_memt = sc->sc_memt; 180 ia.ia_dmat = sc->sc_dmat; 181 ia.ia_ic = sc->sc_ic; 182 ia.ia_iobase = cf->cf_iobase; 183 ia.ia_iosize = 0x666;/* cf->cf_iosize; */ 184 ia.ia_maddr = cf->cf_maddr; 185 ia.ia_msize = cf->cf_msize; 186 ia.ia_irq = cf->cf_irq == 2 ? 9 : cf->cf_irq; 187 ia.ia_drq = cf->cf_drq; 188 ia.ia_drq2 = cf->cf_drq2; 189 ia.ia_delaybah = sc->sc_delaybah; 190 191 if ((*cf->cf_attach->ca_match)(parent, match, &ia) > 0) 192 config_attach(parent, match, &ia, isaprint); 193 else 194 free(dev, M_DEVBUF); 195 } 196 #else /* !__BROKEN_INDIRECT_CONFIG */ 197 int 198 isasearch(parent, cf, aux) 199 struct device *parent; 200 struct cfdata *cf; 201 void *aux; 202 { 203 struct isa_softc *sc = (struct isa_softc *)parent; 204 struct isa_attach_args ia; 205 int tryagain; 206 207 do { 208 ia.ia_iot = sc->sc_iot; 209 ia.ia_memt = sc->sc_memt; 210 ia.ia_dmat = sc->sc_dmat; 211 ia.ia_ic = sc->sc_ic; 212 ia.ia_iobase = cf->cf_iobase; 213 ia.ia_iosize = 0x666; /* cf->cf_iosize; */ 214 ia.ia_maddr = cf->cf_maddr; 215 ia.ia_msize = cf->cf_msize; 216 ia.ia_irq = cf->cf_irq == 2 ? 9 : cf->cf_irq; 217 ia.ia_drq = cf->cf_drq; 218 ia.ia_drq2 = cf->cf_drq2; 219 ia.ia_delaybah = sc->sc_delaybah; 220 221 tryagain = 0; 222 if ((*cf->cf_attach->ca_match)(parent, cf, &ia) > 0) { 223 config_attach(parent, cf, &ia, isaprint); 224 tryagain = (cf->cf_fstate == FSTATE_STAR); 225 } 226 } while (tryagain); 227 228 return (0); 229 } 230 #endif /* __BROKEN_INDIRECT_CONFIG */ 231 232 char * 233 isa_intr_typename(type) 234 int type; 235 { 236 237 switch (type) { 238 case IST_NONE : 239 return ("none"); 240 case IST_PULSE: 241 return ("pulsed"); 242 case IST_EDGE: 243 return ("edge-triggered"); 244 case IST_LEVEL: 245 return ("level-triggered"); 246 default: 247 panic("isa_intr_typename: invalid type %d", type); 248 } 249 } 250
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