sio.c revision 1.35
1 /* $NetBSD: sio.c,v 1.35 2002/10/02 04:06:39 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 #include "opt_dec_2100a_a500.h" 68 #include "eisa.h" 69 70 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 71 72 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.35 2002/10/02 04:06:39 thorpej Exp $"); 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/device.h> 78 #include <sys/malloc.h> 79 80 #include <machine/intr.h> 81 #include <machine/bus.h> 82 #include <machine/rpb.h> 83 84 #include <dev/isa/isavar.h> 85 #include <dev/eisa/eisavar.h> 86 87 #include <dev/pci/pcireg.h> 88 #include <dev/pci/pcivar.h> 89 #include <dev/pci/pcidevs.h> 90 91 #include <alpha/pci/siovar.h> 92 93 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 94 #include <alpha/pci/pci_2100_a500.h> 95 #include <alpha/sableio/sableiovar.h> 96 #endif 97 98 struct sio_softc { 99 struct device sc_dv; 100 101 pci_chipset_tag_t sc_pc; 102 103 bus_space_tag_t sc_iot, sc_memt; 104 bus_dma_tag_t sc_parent_dmat; 105 int sc_haseisa; 106 int sc_is82c693; 107 108 /* ISA chipset must persist; it's used after autoconfig. */ 109 isa_chipset_tag_t sc_ic; 110 }; 111 112 int siomatch __P((struct device *, struct cfdata *, void *)); 113 void sioattach __P((struct device *, struct device *, void *)); 114 115 CFATTACH_DECL(sio, sizeof(struct sio_softc), 116 siomatch, sioattach, NULL, NULL); 117 118 int pcebmatch __P((struct device *, struct cfdata *, void *)); 119 120 CFATTACH_DECL(pceb, sizeof(struct sio_softc), 121 pcebmatch, sioattach, NULL, NULL); 122 123 union sio_attach_args { 124 const char *sa_name; /* XXX should be common */ 125 struct isabus_attach_args sa_iba; 126 struct eisabus_attach_args sa_eba; 127 }; 128 129 int sioprint __P((void *, const char *pnp)); 130 void sio_isa_attach_hook __P((struct device *, struct device *, 131 struct isabus_attach_args *)); 132 void sio_eisa_attach_hook __P((struct device *, struct device *, 133 struct eisabus_attach_args *)); 134 int sio_eisa_maxslots __P((void *)); 135 int sio_eisa_intr_map __P((void *, u_int, eisa_intr_handle_t *)); 136 137 void sio_bridge_callback __P((struct device *)); 138 139 int 140 siomatch(parent, match, aux) 141 struct device *parent; 142 struct cfdata *match; 143 void *aux; 144 { 145 struct pci_attach_args *pa = aux; 146 147 /* 148 * The Cypress 82C693 is more-or-less an SIO, but with 149 * indirect register access. (XXX for everything, or 150 * just the ELCR?) 151 */ 152 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 153 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693 && 154 pa->pa_function == 0) 155 return (1); 156 157 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 158 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO) 159 return (1); 160 161 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI && 162 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ALI_M1543) 163 return (1); 164 165 return (0); 166 } 167 168 int 169 pcebmatch(parent, match, aux) 170 struct device *parent; 171 struct cfdata *match; 172 void *aux; 173 { 174 struct pci_attach_args *pa = aux; 175 176 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 177 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB) 178 return (1); 179 180 return (0); 181 } 182 183 void 184 sioattach(parent, self, aux) 185 struct device *parent, *self; 186 void *aux; 187 { 188 struct sio_softc *sc = (struct sio_softc *)self; 189 struct pci_attach_args *pa = aux; 190 char devinfo[256]; 191 192 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 193 printf(": %s (rev. 0x%02x)\n", devinfo, 194 PCI_REVISION(pa->pa_class)); 195 196 sc->sc_pc = pa->pa_pc; 197 sc->sc_iot = pa->pa_iot; 198 sc->sc_memt = pa->pa_memt; 199 sc->sc_parent_dmat = pa->pa_dmat; 200 sc->sc_haseisa = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 201 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB); 202 sc->sc_is82c693 = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 203 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693); 204 205 config_defer(self, sio_bridge_callback); 206 } 207 208 void 209 sio_bridge_callback(self) 210 struct device *self; 211 { 212 struct sio_softc *sc = (struct sio_softc *)self; 213 struct alpha_eisa_chipset ec; 214 union sio_attach_args sa; 215 216 if (sc->sc_haseisa) { 217 ec.ec_v = NULL; 218 ec.ec_attach_hook = sio_eisa_attach_hook; 219 ec.ec_maxslots = sio_eisa_maxslots; 220 221 /* 222 * Deal with platforms that hook EISA interrupts 223 * up differently. 224 */ 225 switch (cputype) { 226 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 227 case ST_DEC_2100_A500: 228 case ST_DEC_2100A_A500: 229 pci_2100_a500_eisa_pickintr(sc->sc_pc, &ec); 230 break; 231 #endif 232 default: 233 ec.ec_intr_map = sio_eisa_intr_map; 234 ec.ec_intr_string = sio_intr_string; 235 ec.ec_intr_evcnt = sio_intr_evcnt; 236 ec.ec_intr_establish = sio_intr_establish; 237 ec.ec_intr_disestablish = sio_intr_disestablish; 238 } 239 240 sa.sa_eba.eba_busname = "eisa"; 241 sa.sa_eba.eba_iot = sc->sc_iot; 242 sa.sa_eba.eba_memt = sc->sc_memt; 243 sa.sa_eba.eba_dmat = 244 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_EISA); 245 sa.sa_eba.eba_ec = &ec; 246 config_found(&sc->sc_dv, &sa.sa_eba, sioprint); 247 } 248 249 /* 250 * Deal with platforms which have Odd ISA DMA needs. 251 */ 252 switch (cputype) { 253 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 254 case ST_DEC_2100_A500: 255 case ST_DEC_2100A_A500: 256 sc->sc_ic = sableio_pickisa(); 257 break; 258 #endif 259 default: 260 sc->sc_ic = malloc(sizeof(*sc->sc_ic), M_DEVBUF, M_WAITOK); 261 memset(sc->sc_ic, 0, sizeof(*sc->sc_ic)); 262 } 263 264 sc->sc_ic->ic_v = NULL; 265 sc->sc_ic->ic_attach_hook = sio_isa_attach_hook; 266 267 /* 268 * Deal with platforms that hook up ISA interrupts differently. 269 */ 270 switch (cputype) { 271 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 272 case ST_DEC_2100_A500: 273 case ST_DEC_2100A_A500: 274 pci_2100_a500_isa_pickintr(sc->sc_pc, sc->sc_ic); 275 break; 276 #endif 277 default: 278 sc->sc_ic->ic_intr_evcnt = sio_intr_evcnt; 279 sc->sc_ic->ic_intr_establish = sio_intr_establish; 280 sc->sc_ic->ic_intr_disestablish = sio_intr_disestablish; 281 sc->sc_ic->ic_intr_alloc = sio_intr_alloc; 282 } 283 284 sa.sa_iba.iba_busname = "isa"; 285 sa.sa_iba.iba_iot = sc->sc_iot; 286 sa.sa_iba.iba_memt = sc->sc_memt; 287 sa.sa_iba.iba_dmat = 288 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_ISA); 289 sa.sa_iba.iba_ic = sc->sc_ic; 290 config_found(&sc->sc_dv, &sa.sa_iba, sioprint); 291 } 292 293 int 294 sioprint(aux, pnp) 295 void *aux; 296 const char *pnp; 297 { 298 register union sio_attach_args *sa = aux; 299 300 if (pnp) 301 printf("%s at %s", sa->sa_name, pnp); 302 return (UNCONF); 303 } 304 305 void 306 sio_isa_attach_hook(parent, self, iba) 307 struct device *parent, *self; 308 struct isabus_attach_args *iba; 309 { 310 311 /* Nothing to do. */ 312 } 313 314 void 315 sio_eisa_attach_hook(parent, self, eba) 316 struct device *parent, *self; 317 struct eisabus_attach_args *eba; 318 { 319 320 #if NEISA > 0 321 eisa_init(); 322 #endif 323 } 324 325 int 326 sio_eisa_maxslots(v) 327 void *v; 328 { 329 330 return 16; /* as good a number as any. only 8, maybe? */ 331 } 332 333 int 334 sio_eisa_intr_map(v, irq, ihp) 335 void *v; 336 u_int irq; 337 eisa_intr_handle_t *ihp; 338 { 339 340 #define ICU_LEN 16 /* number of ISA IRQs (XXX) */ 341 342 if (irq >= ICU_LEN) { 343 printf("sio_eisa_intr_map: bad IRQ %d\n", irq); 344 *ihp = -1; 345 return 1; 346 } 347 if (irq == 2) { 348 printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 349 irq = 9; 350 } 351 352 *ihp = irq; 353 return 0; 354 } 355
Indexes created Tue Sep 30 20:09:53 GMT 2025