sio.c revision 1.31
1 /* $NetBSD: sio.c,v 1.31 2000/07/12 20:50:00 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 69 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 70 71 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.31 2000/07/12 20:50:00 thorpej Exp $"); 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/kernel.h> 76 #include <sys/device.h> 77 #include <sys/malloc.h> 78 79 #include <machine/intr.h> 80 #include <machine/bus.h> 81 #include <machine/rpb.h> 82 83 #include <dev/isa/isavar.h> 84 #include <dev/eisa/eisavar.h> 85 86 #include <dev/pci/pcireg.h> 87 #include <dev/pci/pcivar.h> 88 #include <dev/pci/pcidevs.h> 89 90 #include <alpha/pci/siovar.h> 91 92 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 93 #include <alpha/pci/pci_2100_a500.h> 94 #include <alpha/sableio/sableiovar.h> 95 #endif 96 97 struct sio_softc { 98 struct device sc_dv; 99 100 pci_chipset_tag_t sc_pc; 101 102 bus_space_tag_t sc_iot, sc_memt; 103 bus_dma_tag_t sc_parent_dmat; 104 int sc_haseisa; 105 int sc_is82c693; 106 107 /* ISA chipset must persist; it's used after autoconfig. */ 108 isa_chipset_tag_t sc_ic; 109 }; 110 111 int siomatch __P((struct device *, struct cfdata *, void *)); 112 void sioattach __P((struct device *, struct device *, void *)); 113 114 struct cfattach sio_ca = { 115 sizeof(struct sio_softc), siomatch, sioattach, 116 }; 117 118 int pcebmatch __P((struct device *, struct cfdata *, void *)); 119 120 struct cfattach pceb_ca = { 121 sizeof(struct sio_softc), pcebmatch, sioattach, 122 }; 123 124 union sio_attach_args { 125 const char *sa_name; /* XXX should be common */ 126 struct isabus_attach_args sa_iba; 127 struct eisabus_attach_args sa_eba; 128 }; 129 130 int sioprint __P((void *, const char *pnp)); 131 void sio_isa_attach_hook __P((struct device *, struct device *, 132 struct isabus_attach_args *)); 133 void sio_eisa_attach_hook __P((struct device *, struct device *, 134 struct eisabus_attach_args *)); 135 int sio_eisa_maxslots __P((void *)); 136 int sio_eisa_intr_map __P((void *, u_int, eisa_intr_handle_t *)); 137 138 void sio_bridge_callback __P((struct device *)); 139 140 int 141 siomatch(parent, match, aux) 142 struct device *parent; 143 struct cfdata *match; 144 void *aux; 145 { 146 struct pci_attach_args *pa = aux; 147 148 /* 149 * The Cypress 82C693 is more-or-less an SIO, but with 150 * indirect register access. (XXX for everything, or 151 * just the ELCR?) 152 */ 153 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 154 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693 && 155 pa->pa_function == 0) 156 return (1); 157 158 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 159 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO) 160 return (1); 161 162 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI && 163 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ALI_M1543) 164 return (1); 165 166 return (0); 167 } 168 169 int 170 pcebmatch(parent, match, aux) 171 struct device *parent; 172 struct cfdata *match; 173 void *aux; 174 { 175 struct pci_attach_args *pa = aux; 176 177 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 178 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB) 179 return (1); 180 181 return (0); 182 } 183 184 void 185 sioattach(parent, self, aux) 186 struct device *parent, *self; 187 void *aux; 188 { 189 struct sio_softc *sc = (struct sio_softc *)self; 190 struct pci_attach_args *pa = aux; 191 char devinfo[256]; 192 193 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 194 printf(": %s (rev. 0x%02x)\n", devinfo, 195 PCI_REVISION(pa->pa_class)); 196 197 sc->sc_pc = pa->pa_pc; 198 sc->sc_iot = pa->pa_iot; 199 sc->sc_memt = pa->pa_memt; 200 sc->sc_parent_dmat = pa->pa_dmat; 201 sc->sc_haseisa = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 202 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB); 203 sc->sc_is82c693 = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 204 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693); 205 206 config_defer(self, sio_bridge_callback); 207 } 208 209 void 210 sio_bridge_callback(self) 211 struct device *self; 212 { 213 struct sio_softc *sc = (struct sio_softc *)self; 214 struct alpha_eisa_chipset ec; 215 union sio_attach_args sa; 216 217 if (sc->sc_haseisa) { 218 ec.ec_v = NULL; 219 ec.ec_attach_hook = sio_eisa_attach_hook; 220 ec.ec_maxslots = sio_eisa_maxslots; 221 222 /* 223 * Deal with platforms that hook EISA interrupts 224 * up differently. 225 */ 226 switch (cputype) { 227 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 228 case ST_DEC_2100_A500: 229 case ST_DEC_2100A_A500: 230 pci_2100_a500_eisa_pickintr(sc->sc_pc, &ec); 231 break; 232 #endif 233 default: 234 ec.ec_intr_map = sio_eisa_intr_map; 235 ec.ec_intr_string = sio_intr_string; 236 ec.ec_intr_evcnt = sio_intr_evcnt; 237 ec.ec_intr_establish = sio_intr_establish; 238 ec.ec_intr_disestablish = sio_intr_disestablish; 239 } 240 241 sa.sa_eba.eba_busname = "eisa"; 242 sa.sa_eba.eba_iot = sc->sc_iot; 243 sa.sa_eba.eba_memt = sc->sc_memt; 244 sa.sa_eba.eba_dmat = 245 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_EISA); 246 sa.sa_eba.eba_ec = &ec; 247 config_found(&sc->sc_dv, &sa.sa_eba, sioprint); 248 } 249 250 /* 251 * Deal with platforms which have Odd ISA DMA needs. 252 */ 253 switch (cputype) { 254 #ifdef DEC_2100_A500 255 case ST_DEC_2100_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 #ifdef DEC_2100_A500 272 case ST_DEC_2100_A500: 273 pci_2100_a500_isa_pickintr(sc->sc_pc, sc->sc_ic); 274 break; 275 #endif 276 default: 277 sc->sc_ic->ic_intr_evcnt = sio_intr_evcnt; 278 sc->sc_ic->ic_intr_establish = sio_intr_establish; 279 sc->sc_ic->ic_intr_disestablish = sio_intr_disestablish; 280 sc->sc_ic->ic_intr_alloc = sio_intr_alloc; 281 } 282 283 sa.sa_iba.iba_busname = "isa"; 284 sa.sa_iba.iba_iot = sc->sc_iot; 285 sa.sa_iba.iba_memt = sc->sc_memt; 286 sa.sa_iba.iba_dmat = 287 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_ISA); 288 sa.sa_iba.iba_ic = sc->sc_ic; 289 config_found(&sc->sc_dv, &sa.sa_iba, sioprint); 290 } 291 292 int 293 sioprint(aux, pnp) 294 void *aux; 295 const char *pnp; 296 { 297 register union sio_attach_args *sa = aux; 298 299 if (pnp) 300 printf("%s at %s", sa->sa_name, pnp); 301 return (UNCONF); 302 } 303 304 void 305 sio_isa_attach_hook(parent, self, iba) 306 struct device *parent, *self; 307 struct isabus_attach_args *iba; 308 { 309 310 /* Nothing to do. */ 311 } 312 313 void 314 sio_eisa_attach_hook(parent, self, eba) 315 struct device *parent, *self; 316 struct eisabus_attach_args *eba; 317 { 318 319 /* Nothing to do. */ 320 } 321 322 int 323 sio_eisa_maxslots(v) 324 void *v; 325 { 326 327 return 16; /* as good a number as any. only 8, maybe? */ 328 } 329 330 int 331 sio_eisa_intr_map(v, irq, ihp) 332 void *v; 333 u_int irq; 334 eisa_intr_handle_t *ihp; 335 { 336 337 #define ICU_LEN 16 /* number of ISA IRQs (XXX) */ 338 339 if (irq >= ICU_LEN) { 340 printf("sio_eisa_intr_map: bad IRQ %d\n", irq); 341 *ihp = -1; 342 return 1; 343 } 344 if (irq == 2) { 345 printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 346 irq = 9; 347 } 348 349 *ihp = irq; 350 return 0; 351 } 352
Indexes created Tue Sep 30 20:09:53 GMT 2025