sio.c revision 1.25
1 /* $NetBSD: sio.c,v 1.25 1998/06/08 23:49:05 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 31 32 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.25 1998/06/08 23:49:05 thorpej Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/device.h> 38 39 #include <machine/intr.h> 40 #include <machine/bus.h> 41 42 #include <dev/isa/isavar.h> 43 #include <dev/eisa/eisavar.h> 44 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcidevs.h> 48 49 #include <alpha/pci/siovar.h> 50 51 struct sio_softc { 52 struct device sc_dv; 53 54 bus_space_tag_t sc_iot, sc_memt; 55 bus_dma_tag_t sc_parent_dmat; 56 int sc_haseisa; 57 int sc_is82c693; 58 59 /* ISA chipset must persist; it's used after autoconfig. */ 60 struct alpha_isa_chipset sc_isa_chipset; 61 }; 62 63 int siomatch __P((struct device *, struct cfdata *, void *)); 64 void sioattach __P((struct device *, struct device *, void *)); 65 66 struct cfattach sio_ca = { 67 sizeof(struct sio_softc), siomatch, sioattach, 68 }; 69 70 int pcebmatch __P((struct device *, struct cfdata *, void *)); 71 72 struct cfattach pceb_ca = { 73 sizeof(struct sio_softc), pcebmatch, sioattach, 74 }; 75 76 union sio_attach_args { 77 const char *sa_name; /* XXX should be common */ 78 struct isabus_attach_args sa_iba; 79 struct eisabus_attach_args sa_eba; 80 }; 81 82 int sioprint __P((void *, const char *pnp)); 83 void sio_isa_attach_hook __P((struct device *, struct device *, 84 struct isabus_attach_args *)); 85 void sio_eisa_attach_hook __P((struct device *, struct device *, 86 struct eisabus_attach_args *)); 87 int sio_eisa_maxslots __P((void *)); 88 int sio_eisa_intr_map __P((void *, u_int, eisa_intr_handle_t *)); 89 90 void sio_bridge_callback __P((void *)); 91 92 int 93 siomatch(parent, match, aux) 94 struct device *parent; 95 struct cfdata *match; 96 void *aux; 97 { 98 struct pci_attach_args *pa = aux; 99 100 /* 101 * The Cypress 82C693 is more-or-less an SIO, but with 102 * indirect register access. (XXX for everything, or 103 * just the ELCR?) 104 */ 105 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 106 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693 && 107 pa->pa_function == 0) 108 return (1); 109 110 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 111 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO) 112 return (1); 113 114 return (0); 115 } 116 117 int 118 pcebmatch(parent, match, aux) 119 struct device *parent; 120 struct cfdata *match; 121 void *aux; 122 { 123 struct pci_attach_args *pa = aux; 124 125 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 126 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB) 127 return (1); 128 129 return (0); 130 } 131 132 void 133 sioattach(parent, self, aux) 134 struct device *parent, *self; 135 void *aux; 136 { 137 struct sio_softc *sc = (struct sio_softc *)self; 138 struct pci_attach_args *pa = aux; 139 char devinfo[256]; 140 141 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 142 printf(": %s (rev. 0x%02x)\n", devinfo, 143 PCI_REVISION(pa->pa_class)); 144 145 sc->sc_iot = pa->pa_iot; 146 sc->sc_memt = pa->pa_memt; 147 sc->sc_parent_dmat = pa->pa_dmat; 148 sc->sc_haseisa = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 149 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB); 150 sc->sc_is82c693 = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 151 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693); 152 153 #ifdef EVCNT_COUNTERS 154 evcnt_attach(&sc->sc_dv, "intr", &sio_intr_evcnt); 155 #endif 156 157 set_pci_isa_bridge_callback(sio_bridge_callback, sc); 158 } 159 160 void 161 sio_bridge_callback(v) 162 void *v; 163 { 164 struct sio_softc *sc = v; 165 struct alpha_eisa_chipset ec; 166 union sio_attach_args sa; 167 168 if (sc->sc_haseisa) { 169 ec.ec_v = NULL; 170 ec.ec_attach_hook = sio_eisa_attach_hook; 171 ec.ec_maxslots = sio_eisa_maxslots; 172 ec.ec_intr_map = sio_eisa_intr_map; 173 ec.ec_intr_string = sio_intr_string; 174 ec.ec_intr_establish = sio_intr_establish; 175 ec.ec_intr_disestablish = sio_intr_disestablish; 176 177 sa.sa_eba.eba_busname = "eisa"; 178 sa.sa_eba.eba_iot = sc->sc_iot; 179 sa.sa_eba.eba_memt = sc->sc_memt; 180 sa.sa_eba.eba_dmat = 181 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_EISA); 182 sa.sa_eba.eba_ec = &ec; 183 config_found(&sc->sc_dv, &sa.sa_eba, sioprint); 184 } 185 186 sc->sc_isa_chipset.ic_v = NULL; 187 sc->sc_isa_chipset.ic_attach_hook = sio_isa_attach_hook; 188 sc->sc_isa_chipset.ic_intr_establish = sio_intr_establish; 189 sc->sc_isa_chipset.ic_intr_disestablish = sio_intr_disestablish; 190 sc->sc_isa_chipset.ic_intr_alloc = sio_intr_alloc; 191 192 sa.sa_iba.iba_busname = "isa"; 193 sa.sa_iba.iba_iot = sc->sc_iot; 194 sa.sa_iba.iba_memt = sc->sc_memt; 195 sa.sa_iba.iba_dmat = 196 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_ISA); 197 sa.sa_iba.iba_ic = &sc->sc_isa_chipset; 198 config_found(&sc->sc_dv, &sa.sa_iba, sioprint); 199 } 200 201 int 202 sioprint(aux, pnp) 203 void *aux; 204 const char *pnp; 205 { 206 register union sio_attach_args *sa = aux; 207 208 if (pnp) 209 printf("%s at %s", sa->sa_name, pnp); 210 return (UNCONF); 211 } 212 213 void 214 sio_isa_attach_hook(parent, self, iba) 215 struct device *parent, *self; 216 struct isabus_attach_args *iba; 217 { 218 219 /* Nothing to do. */ 220 } 221 222 void 223 sio_eisa_attach_hook(parent, self, eba) 224 struct device *parent, *self; 225 struct eisabus_attach_args *eba; 226 { 227 228 /* Nothing to do. */ 229 } 230 231 int 232 sio_eisa_maxslots(v) 233 void *v; 234 { 235 236 return 16; /* as good a number as any. only 8, maybe? */ 237 } 238 239 int 240 sio_eisa_intr_map(v, irq, ihp) 241 void *v; 242 u_int irq; 243 eisa_intr_handle_t *ihp; 244 { 245 246 #define ICU_LEN 16 /* number of ISA IRQs (XXX) */ 247 248 if (irq >= ICU_LEN) { 249 printf("sio_eisa_intr_map: bad IRQ %d\n", irq); 250 *ihp = -1; 251 return 1; 252 } 253 if (irq == 2) { 254 printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 255 irq = 9; 256 } 257 258 *ihp = irq; 259 return 0; 260 } 261
Indexes created Tue Sep 30 20:09:53 GMT 2025