sio.c revision 1.23
1 /* $NetBSD: sio.c,v 1.23 1998/04/12 08:32:19 mjacob 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 1.23 1998/04/12 08:32:19 mjacob 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 60 int siomatch __P((struct device *, struct cfdata *, void *)); 61 void sioattach __P((struct device *, struct device *, void *)); 62 63 struct cfattach sio_ca = { 64 sizeof(struct sio_softc), siomatch, sioattach, 65 }; 66 67 int pcebmatch __P((struct device *, struct cfdata *, void *)); 68 69 struct cfattach pceb_ca = { 70 sizeof(struct sio_softc), pcebmatch, sioattach, 71 }; 72 73 union sio_attach_args { 74 const char *sa_name; /* XXX should be common */ 75 struct isabus_attach_args sa_iba; 76 struct eisabus_attach_args sa_eba; 77 }; 78 79 int sioprint __P((void *, const char *pnp)); 80 void sio_isa_attach_hook __P((struct device *, struct device *, 81 struct isabus_attach_args *)); 82 void sio_eisa_attach_hook __P((struct device *, struct device *, 83 struct eisabus_attach_args *)); 84 int sio_eisa_maxslots __P((void *)); 85 int sio_eisa_intr_map __P((void *, u_int, eisa_intr_handle_t *)); 86 87 void sio_bridge_callback __P((void *)); 88 89 int 90 siomatch(parent, match, aux) 91 struct device *parent; 92 struct cfdata *match; 93 void *aux; 94 { 95 struct pci_attach_args *pa = aux; 96 97 /* 98 * The Cypress 82C693 is more-or-less an SIO, but with 99 * indirect register access. (XXX for everything, or 100 * just the ELCR?) 101 */ 102 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 103 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693 && 104 pa->pa_function == 0) 105 return (1); 106 107 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 108 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO) 109 return (1); 110 111 return (0); 112 } 113 114 int 115 pcebmatch(parent, match, aux) 116 struct device *parent; 117 struct cfdata *match; 118 void *aux; 119 { 120 struct pci_attach_args *pa = aux; 121 122 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 123 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB) 124 return (1); 125 126 return (0); 127 } 128 129 void 130 sioattach(parent, self, aux) 131 struct device *parent, *self; 132 void *aux; 133 { 134 struct sio_softc *sc = (struct sio_softc *)self; 135 struct pci_attach_args *pa = aux; 136 char devinfo[256]; 137 138 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 139 printf(": %s (rev. 0x%02x)\n", devinfo, 140 PCI_REVISION(pa->pa_class)); 141 142 sc->sc_iot = pa->pa_iot; 143 sc->sc_memt = pa->pa_memt; 144 sc->sc_parent_dmat = pa->pa_dmat; 145 sc->sc_haseisa = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && 146 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB); 147 sc->sc_is82c693 = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && 148 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693); 149 150 #ifdef EVCNT_COUNTERS 151 evcnt_attach(&sc->sc_dv, "intr", &sio_intr_evcnt); 152 #endif 153 154 set_pci_isa_bridge_callback(sio_bridge_callback, sc); 155 } 156 157 void 158 sio_bridge_callback(v) 159 void *v; 160 { 161 struct sio_softc *sc = v; 162 struct alpha_eisa_chipset ec; 163 struct alpha_isa_chipset ic; 164 union sio_attach_args sa; 165 166 if (sc->sc_haseisa) { 167 ec.ec_v = NULL; 168 ec.ec_attach_hook = sio_eisa_attach_hook; 169 ec.ec_maxslots = sio_eisa_maxslots; 170 ec.ec_intr_map = sio_eisa_intr_map; 171 ec.ec_intr_string = sio_intr_string; 172 ec.ec_intr_establish = sio_intr_establish; 173 ec.ec_intr_disestablish = sio_intr_disestablish; 174 175 sa.sa_eba.eba_busname = "eisa"; 176 sa.sa_eba.eba_iot = sc->sc_iot; 177 sa.sa_eba.eba_memt = sc->sc_memt; 178 sa.sa_eba.eba_dmat = 179 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_EISA); 180 sa.sa_eba.eba_ec = &ec; 181 config_found(&sc->sc_dv, &sa.sa_eba, sioprint); 182 } 183 184 ic.ic_v = NULL; 185 ic.ic_attach_hook = sio_isa_attach_hook; 186 ic.ic_intr_establish = sio_intr_establish; 187 ic.ic_intr_disestablish = sio_intr_disestablish; 188 189 sa.sa_iba.iba_busname = "isa"; 190 sa.sa_iba.iba_iot = sc->sc_iot; 191 sa.sa_iba.iba_memt = sc->sc_memt; 192 sa.sa_iba.iba_dmat = 193 alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_ISA); 194 sa.sa_iba.iba_ic = ⁣ 195 config_found(&sc->sc_dv, &sa.sa_iba, sioprint); 196 } 197 198 int 199 sioprint(aux, pnp) 200 void *aux; 201 const char *pnp; 202 { 203 register union sio_attach_args *sa = aux; 204 205 if (pnp) 206 printf("%s at %s", sa->sa_name, pnp); 207 return (UNCONF); 208 } 209 210 void 211 sio_isa_attach_hook(parent, self, iba) 212 struct device *parent, *self; 213 struct isabus_attach_args *iba; 214 { 215 216 /* Nothing to do. */ 217 } 218 219 void 220 sio_eisa_attach_hook(parent, self, eba) 221 struct device *parent, *self; 222 struct eisabus_attach_args *eba; 223 { 224 225 /* Nothing to do. */ 226 } 227 228 int 229 sio_eisa_maxslots(v) 230 void *v; 231 { 232 233 return 16; /* as good a number as any. only 8, maybe? */ 234 } 235 236 int 237 sio_eisa_intr_map(v, irq, ihp) 238 void *v; 239 u_int irq; 240 eisa_intr_handle_t *ihp; 241 { 242 243 #define ICU_LEN 16 /* number of ISA IRQs (XXX) */ 244 245 if (irq >= ICU_LEN) { 246 printf("sio_eisa_intr_map: bad IRQ %d\n", irq); 247 *ihp = -1; 248 return 1; 249 } 250 if (irq == 2) { 251 printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n"); 252 irq = 9; 253 } 254 255 *ihp = irq; 256 return 0; 257 } 258
Indexes created Wed Oct 01 07:09:59 GMT 2025