sio.c revision 1.44
1 /* $NetBSD: sio.c,v 1.44 2009/03/14 14:45:53 dsl 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 34 * All rights reserved. 35 * 36 * Author: Chris G. Demetriou 37 * 38 * Permission to use, copy, modify and distribute this software and 39 * its documentation is hereby granted, provided that both the copyright 40 * notice and this permission notice appear in all copies of the 41 * software, derivative works or modified versions, and any portions 42 * thereof, and that both notices appear in supporting documentation. 43 * 44 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 45 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 46 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 47 * 48 * Carnegie Mellon requests users of this software to return to 49 * 50 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 51 * School of Computer Science 52 * Carnegie Mellon University 53 * Pittsburgh PA 15213-3890 54 * 55 * any improvements or extensions that they make and grant Carnegie the 56 * rights to redistribute these changes. 57 */ 58 59 #include "opt_dec_2100_a500.h" 60 #include "opt_dec_2100a_a500.h" 61 #include "eisa.h" 62 #include "sio.h" 63 64 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 65 66 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.44 2009/03/14 14:45:53 dsl Exp $"); 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/kernel.h> 71 #include <sys/device.h> 72 #include <sys/malloc.h> 73 74 #include <machine/intr.h> 75 #include <machine/bus.h> 76 #include <machine/rpb.h> 77 78 #include <dev/isa/isavar.h> 79 #include <dev/eisa/eisavar.h> 80 81 #include <dev/pci/pcireg.h> 82 #include <dev/pci/pcivar.h> 83 #include <dev/pci/pcidevs.h> 84 85 #include <alpha/pci/siovar.h> 86 87 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 88 #include <alpha/pci/pci_2100_a500.h> 89 #include <alpha/sableio/sableiovar.h> 90 #endif 91 92 struct sio_softc { 93 struct device sc_dv; 94 95 pci_chipset_tag_t sc_pc; 96 97 bus_space_tag_t sc_iot, sc_memt; 98 bus_dma_tag_t sc_parent_dmat; 99 #if NPCEB > 0 100 int sc_haseisa; 101 #endif 102 int sc_is82c693; 103 104 /* ISA chipset must persist; it's used after autoconfig. */ 105 isa_chipset_tag_t sc_ic; 106 }; 107 108 int siomatch(struct device *, struct cfdata *, void *); 109 void sioattach(struct device *, struct device *, void *); 110 111 CFATTACH_DECL(sio, sizeof(struct sio_softc), 112 siomatch, sioattach, NULL, NULL); 113 114 #if NPCEB > 0 115 int pcebmatch(struct device *, struct cfdata *, void *); 116 117 CFATTACH_DECL(pceb, sizeof(struct sio_softc), 118 pcebmatch, sioattach, NULL, NULL); 119 #endif 120 121 union sio_attach_args { 122 struct isabus_attach_args sa_iba; 123 struct eisabus_attach_args sa_eba; 124 }; 125 126 void sio_isa_attach_hook(struct device *, struct device *, 127 struct isabus_attach_args *); 128 #if NPCEB > 0 129 void sio_eisa_attach_hook(struct device *, struct device *, 130 struct eisabus_attach_args *); 131 int sio_eisa_maxslots(void *); 132 int sio_eisa_intr_map(void *, u_int, eisa_intr_handle_t *); 133 #endif 134 135 void sio_bridge_callback(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 #if NPCEB > 0 167 int 168 pcebmatch(parent, match, aux) 169 struct device *parent; 170 struct cfdata *match; 171 void *aux; 172 { 173 struct pci_attach_args *pa = aux; 174 175 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 176 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB) 177 return (1); 178 179 return (0); 180 } 181 #endif 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, sizeof(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 #if NPCEB > 0 201 sc->sc_haseisa = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 202 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB); 203 #endif 204 sc->sc_is82c693 = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 205 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693); 206 207 config_defer(self, sio_bridge_callback); 208 } 209 210 void 211 sio_bridge_callback(self) 212 struct device *self; 213 { 214 struct sio_softc *sc = (struct sio_softc *)self; 215 union sio_attach_args sa; 216 #if NPCEB > 0 217 struct alpha_eisa_chipset ec; 218 219 if (sc->sc_haseisa) { 220 ec.ec_v = NULL; 221 ec.ec_attach_hook = sio_eisa_attach_hook; 222 ec.ec_maxslots = sio_eisa_maxslots; 223 224 /* 225 * Deal with platforms that hook EISA interrupts 226 * up differently. 227 */ 228 switch (cputype) { 229 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 230 case ST_DEC_2100_A500: 231 case ST_DEC_2100A_A500: 232 pci_2100_a500_eisa_pickintr(sc->sc_pc, &ec); 233 break; 234 #endif 235 default: 236 ec.ec_intr_map = sio_eisa_intr_map; 237 ec.ec_intr_string = sio_intr_string; 238 ec.ec_intr_evcnt = sio_intr_evcnt; 239 ec.ec_intr_establish = sio_intr_establish; 240 ec.ec_intr_disestablish = sio_intr_disestablish; 241 } 242 243 sa.sa_eba.eba_iot = sc->sc_iot; 244 sa.sa_eba.eba_memt = sc->sc_memt; 245 sa.sa_eba.eba_dmat = 246 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_EISA); 247 sa.sa_eba.eba_ec = &ec; 248 config_found_ia(&sc->sc_dv, "eisabus", &sa.sa_eba, 249 eisabusprint); 250 } 251 #endif /* NPCEB */ 252 253 /* 254 * Deal with platforms which have Odd ISA DMA needs. 255 */ 256 switch (cputype) { 257 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 258 case ST_DEC_2100_A500: 259 case ST_DEC_2100A_A500: 260 sc->sc_ic = sableio_pickisa(); 261 break; 262 #endif 263 default: 264 sc->sc_ic = malloc(sizeof(*sc->sc_ic), M_DEVBUF, M_WAITOK); 265 memset(sc->sc_ic, 0, sizeof(*sc->sc_ic)); 266 } 267 268 sc->sc_ic->ic_v = NULL; 269 sc->sc_ic->ic_attach_hook = sio_isa_attach_hook; 270 271 /* 272 * Deal with platforms that hook up ISA interrupts differently. 273 */ 274 switch (cputype) { 275 #if defined(DEC_2100_A500) || defined(DEC_2100A_A500) 276 case ST_DEC_2100_A500: 277 case ST_DEC_2100A_A500: 278 pci_2100_a500_isa_pickintr(sc->sc_pc, sc->sc_ic); 279 break; 280 #endif 281 default: 282 sc->sc_ic->ic_intr_evcnt = sio_intr_evcnt; 283 sc->sc_ic->ic_intr_establish = sio_intr_establish; 284 sc->sc_ic->ic_intr_disestablish = sio_intr_disestablish; 285 sc->sc_ic->ic_intr_alloc = sio_intr_alloc; 286 } 287 288 sa.sa_iba.iba_iot = sc->sc_iot; 289 sa.sa_iba.iba_memt = sc->sc_memt; 290 sa.sa_iba.iba_dmat = 291 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_ISA); 292 sa.sa_iba.iba_ic = sc->sc_ic; 293 config_found_ia(&sc->sc_dv, "isabus", &sa.sa_iba, isabusprint); 294 } 295 296 void 297 sio_isa_attach_hook(parent, self, iba) 298 struct device *parent, *self; 299 struct isabus_attach_args *iba; 300 { 301 302 /* Nothing to do. */ 303 } 304 305 #if NPCEB > 0 306 307 void 308 sio_eisa_attach_hook(parent, self, eba) 309 struct device *parent, *self; 310 struct eisabus_attach_args *eba; 311 { 312 313 #if NEISA > 0 314 eisa_init(eba->eba_ec); 315 #endif 316 } 317 318 int 319 sio_eisa_maxslots(v) 320 void *v; 321 { 322 323 return 16; /* as good a number as any. only 8, maybe? */ 324 } 325 326 int 327 sio_eisa_intr_map(v, irq, ihp) 328 void *v; 329 u_int irq; 330 eisa_intr_handle_t *ihp; 331 { 332 333 #define ICU_LEN 16 /* number of ISA IRQs (XXX) */ 334 335 if (irq >= ICU_LEN) { 336 printf("sio_eisa_intr_map: bad IRQ %d\n", irq); 337 *ihp = -1; 338 return 1; 339 } 340 if (irq == 2) { 341 printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 342 irq = 9; 343 } 344 345 *ihp = irq; 346 return 0; 347 } 348 349 #endif /* NPCEB */ 350
Indexes created Wed Oct 01 15:09:59 GMT 2025