sio.c revision 1.30
1 /* $NetBSD: sio.c,v 1.30 2000/06/13 16:40:37 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 41 * All rights reserved. 42 * 43 * Author: Chris G. Demetriou 44 * 45 * Permission to use, copy, modify and distribute this software and 46 * its documentation is hereby granted, provided that both the copyright 47 * notice and this permission notice appear in all copies of the 48 * software, derivative works or modified versions, and any portions 49 * thereof, and that both notices appear in supporting documentation. 50 * 51 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 52 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 53 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 54 * 55 * Carnegie Mellon requests users of this software to return to 56 * 57 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 58 * School of Computer Science 59 * Carnegie Mellon University 60 * Pittsburgh PA 15213-3890 61 * 62 * any improvements or extensions that they make and grant Carnegie the 63 * rights to redistribute these changes. 64 */ 65 66 #include "opt_dec_2100_a500.h" 67 68 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 69 70 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.30 2000/06/13 16:40:37 thorpej Exp $"); 71 72 #include <sys/param.h> 73 #include <sys/systm.h> 74 #include <sys/kernel.h> 75 #include <sys/device.h> 76 77 #include <machine/intr.h> 78 #include <machine/bus.h> 79 #include <machine/rpb.h> 80 81 #include <dev/isa/isavar.h> 82 #include <dev/eisa/eisavar.h> 83 84 #include <dev/pci/pcireg.h> 85 #include <dev/pci/pcivar.h> 86 #include <dev/pci/pcidevs.h> 87 88 #include <alpha/pci/siovar.h> 89 90 #ifdef DEC_2100_A500 91 #include <alpha/pci/pci_2100_a500.h> 92 #endif 93 94 struct sio_softc { 95 struct device sc_dv; 96 97 pci_chipset_tag_t sc_pc; 98 99 bus_space_tag_t sc_iot, sc_memt; 100 bus_dma_tag_t sc_parent_dmat; 101 int sc_haseisa; 102 int sc_is82c693; 103 104 /* ISA chipset must persist; it's used after autoconfig. */ 105 struct alpha_isa_chipset sc_isa_chipset; 106 }; 107 108 int siomatch __P((struct device *, struct cfdata *, void *)); 109 void sioattach __P((struct device *, struct device *, void *)); 110 111 struct cfattach sio_ca = { 112 sizeof(struct sio_softc), siomatch, sioattach, 113 }; 114 115 int pcebmatch __P((struct device *, struct cfdata *, void *)); 116 117 struct cfattach pceb_ca = { 118 sizeof(struct sio_softc), pcebmatch, sioattach, 119 }; 120 121 union sio_attach_args { 122 const char *sa_name; /* XXX should be common */ 123 struct isabus_attach_args sa_iba; 124 struct eisabus_attach_args sa_eba; 125 }; 126 127 int sioprint __P((void *, const char *pnp)); 128 void sio_isa_attach_hook __P((struct device *, struct device *, 129 struct isabus_attach_args *)); 130 void sio_eisa_attach_hook __P((struct device *, struct device *, 131 struct eisabus_attach_args *)); 132 int sio_eisa_maxslots __P((void *)); 133 int sio_eisa_intr_map __P((void *, u_int, eisa_intr_handle_t *)); 134 135 void sio_bridge_callback __P((struct device *)); 136 137 int 138 siomatch(parent, match, aux) 139 struct device *parent; 140 struct cfdata *match; 141 void *aux; 142 { 143 struct pci_attach_args *pa = aux; 144 145 /* 146 * The Cypress 82C693 is more-or-less an SIO, but with 147 * indirect register access. (XXX for everything, or 148 * just the ELCR?) 149 */ 150 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 151 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693 && 152 pa->pa_function == 0) 153 return (1); 154 155 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 156 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO) 157 return (1); 158 159 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI && 160 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ALI_M1543) 161 return (1); 162 163 return (0); 164 } 165 166 int 167 pcebmatch(parent, match, aux) 168 struct device *parent; 169 struct cfdata *match; 170 void *aux; 171 { 172 struct pci_attach_args *pa = aux; 173 174 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 175 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB) 176 return (1); 177 178 return (0); 179 } 180 181 void 182 sioattach(parent, self, aux) 183 struct device *parent, *self; 184 void *aux; 185 { 186 struct sio_softc *sc = (struct sio_softc *)self; 187 struct pci_attach_args *pa = aux; 188 char devinfo[256]; 189 190 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 191 printf(": %s (rev. 0x%02x)\n", devinfo, 192 PCI_REVISION(pa->pa_class)); 193 194 sc->sc_pc = pa->pa_pc; 195 sc->sc_iot = pa->pa_iot; 196 sc->sc_memt = pa->pa_memt; 197 sc->sc_parent_dmat = pa->pa_dmat; 198 sc->sc_haseisa = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 199 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB); 200 sc->sc_is82c693 = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 201 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693); 202 203 config_defer(self, sio_bridge_callback); 204 } 205 206 void 207 sio_bridge_callback(self) 208 struct device *self; 209 { 210 struct sio_softc *sc = (struct sio_softc *)self; 211 struct alpha_eisa_chipset ec; 212 union sio_attach_args sa; 213 214 if (sc->sc_haseisa) { 215 ec.ec_v = NULL; 216 ec.ec_attach_hook = sio_eisa_attach_hook; 217 ec.ec_maxslots = sio_eisa_maxslots; 218 219 /* 220 * Deal with platforms that hook EISA interrupts 221 * up differently. 222 */ 223 switch (cputype) { 224 #ifdef DEC_2100_A500 225 case ST_DEC_2100_A500: 226 pci_2100_a500_eisa_pickintr(sc->sc_pc, &ec); 227 break; 228 #endif 229 default: 230 ec.ec_intr_map = sio_eisa_intr_map; 231 ec.ec_intr_string = sio_intr_string; 232 ec.ec_intr_evcnt = sio_intr_evcnt; 233 ec.ec_intr_establish = sio_intr_establish; 234 ec.ec_intr_disestablish = sio_intr_disestablish; 235 } 236 237 sa.sa_eba.eba_busname = "eisa"; 238 sa.sa_eba.eba_iot = sc->sc_iot; 239 sa.sa_eba.eba_memt = sc->sc_memt; 240 sa.sa_eba.eba_dmat = 241 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_EISA); 242 sa.sa_eba.eba_ec = &ec; 243 config_found(&sc->sc_dv, &sa.sa_eba, sioprint); 244 } 245 246 sc->sc_isa_chipset.ic_v = NULL; 247 sc->sc_isa_chipset.ic_attach_hook = sio_isa_attach_hook; 248 249 /* 250 * Deal with platforms that hook up ISA interrupts differently. 251 */ 252 switch (cputype) { 253 #ifdef DEC_2100_A500 254 case ST_DEC_2100_A500: 255 pci_2100_a500_isa_pickintr(sc->sc_pc, &sc->sc_isa_chipset); 256 break; 257 #endif 258 default: 259 sc->sc_isa_chipset.ic_intr_evcnt = sio_intr_evcnt; 260 sc->sc_isa_chipset.ic_intr_establish = sio_intr_establish; 261 sc->sc_isa_chipset.ic_intr_disestablish = sio_intr_disestablish; 262 sc->sc_isa_chipset.ic_intr_alloc = sio_intr_alloc; 263 } 264 265 sa.sa_iba.iba_busname = "isa"; 266 sa.sa_iba.iba_iot = sc->sc_iot; 267 sa.sa_iba.iba_memt = sc->sc_memt; 268 sa.sa_iba.iba_dmat = 269 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_ISA); 270 sa.sa_iba.iba_ic = &sc->sc_isa_chipset; 271 config_found(&sc->sc_dv, &sa.sa_iba, sioprint); 272 } 273 274 int 275 sioprint(aux, pnp) 276 void *aux; 277 const char *pnp; 278 { 279 register union sio_attach_args *sa = aux; 280 281 if (pnp) 282 printf("%s at %s", sa->sa_name, pnp); 283 return (UNCONF); 284 } 285 286 void 287 sio_isa_attach_hook(parent, self, iba) 288 struct device *parent, *self; 289 struct isabus_attach_args *iba; 290 { 291 292 /* Nothing to do. */ 293 } 294 295 void 296 sio_eisa_attach_hook(parent, self, eba) 297 struct device *parent, *self; 298 struct eisabus_attach_args *eba; 299 { 300 301 /* Nothing to do. */ 302 } 303 304 int 305 sio_eisa_maxslots(v) 306 void *v; 307 { 308 309 return 16; /* as good a number as any. only 8, maybe? */ 310 } 311 312 int 313 sio_eisa_intr_map(v, irq, ihp) 314 void *v; 315 u_int irq; 316 eisa_intr_handle_t *ihp; 317 { 318 319 #define ICU_LEN 16 /* number of ISA IRQs (XXX) */ 320 321 if (irq >= ICU_LEN) { 322 printf("sio_eisa_intr_map: bad IRQ %d\n", irq); 323 *ihp = -1; 324 return 1; 325 } 326 if (irq == 2) { 327 printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 328 irq = 9; 329 } 330 331 *ihp = irq; 332 return 0; 333 } 334
Indexes created Tue Sep 30 20:09:53 GMT 2025