/* $NetBSD: sio.c,v 1.25 1998/06/08 23:49:05 thorpej Exp $ */ /* * Copyright (c) 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ #include /* RCS ID & Copyright macro defns */ __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.25 1998/06/08 23:49:05 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include struct sio_softc { struct device sc_dv; bus_space_tag_t sc_iot, sc_memt; bus_dma_tag_t sc_parent_dmat; int sc_haseisa; int sc_is82c693; /* ISA chipset must persist; it's used after autoconfig. */ struct alpha_isa_chipset sc_isa_chipset; }; int siomatch __P((struct device *, struct cfdata *, void *)); void sioattach __P((struct device *, struct device *, void *)); struct cfattach sio_ca = { sizeof(struct sio_softc), siomatch, sioattach, }; int pcebmatch __P((struct device *, struct cfdata *, void *)); struct cfattach pceb_ca = { sizeof(struct sio_softc), pcebmatch, sioattach, }; union sio_attach_args { const char *sa_name; /* XXX should be common */ struct isabus_attach_args sa_iba; struct eisabus_attach_args sa_eba; }; int sioprint __P((void *, const char *pnp)); void sio_isa_attach_hook __P((struct device *, struct device *, struct isabus_attach_args *)); void sio_eisa_attach_hook __P((struct device *, struct device *, struct eisabus_attach_args *)); int sio_eisa_maxslots __P((void *)); int sio_eisa_intr_map __P((void *, u_int, eisa_intr_handle_t *)); void sio_bridge_callback __P((void *)); int siomatch(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { struct pci_attach_args *pa = aux; /* * The Cypress 82C693 is more-or-less an SIO, but with * indirect register access. (XXX for everything, or * just the ELCR?) */ if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693 && pa->pa_function == 0) return (1); if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO) return (1); return (0); } int pcebmatch(parent, match, aux) struct device *parent; struct cfdata *match; void *aux; { struct pci_attach_args *pa = aux; if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB) return (1); return (0); } void sioattach(parent, self, aux) struct device *parent, *self; void *aux; { struct sio_softc *sc = (struct sio_softc *)self; struct pci_attach_args *pa = aux; char devinfo[256]; pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); sc->sc_iot = pa->pa_iot; sc->sc_memt = pa->pa_memt; sc->sc_parent_dmat = pa->pa_dmat; sc->sc_haseisa = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_INTEL && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB); sc->sc_is82c693 = (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_CONTAQ && PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_CONTAQ_82C693); #ifdef EVCNT_COUNTERS evcnt_attach(&sc->sc_dv, "intr", &sio_intr_evcnt); #endif set_pci_isa_bridge_callback(sio_bridge_callback, sc); } void sio_bridge_callback(v) void *v; { struct sio_softc *sc = v; struct alpha_eisa_chipset ec; union sio_attach_args sa; if (sc->sc_haseisa) { ec.ec_v = NULL; ec.ec_attach_hook = sio_eisa_attach_hook; ec.ec_maxslots = sio_eisa_maxslots; ec.ec_intr_map = sio_eisa_intr_map; ec.ec_intr_string = sio_intr_string; ec.ec_intr_establish = sio_intr_establish; ec.ec_intr_disestablish = sio_intr_disestablish; sa.sa_eba.eba_busname = "eisa"; sa.sa_eba.eba_iot = sc->sc_iot; sa.sa_eba.eba_memt = sc->sc_memt; sa.sa_eba.eba_dmat = alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_EISA); sa.sa_eba.eba_ec = &ec; config_found(&sc->sc_dv, &sa.sa_eba, sioprint); } sc->sc_isa_chipset.ic_v = NULL; sc->sc_isa_chipset.ic_attach_hook = sio_isa_attach_hook; sc->sc_isa_chipset.ic_intr_establish = sio_intr_establish; sc->sc_isa_chipset.ic_intr_disestablish = sio_intr_disestablish; sc->sc_isa_chipset.ic_intr_alloc = sio_intr_alloc; sa.sa_iba.iba_busname = "isa"; sa.sa_iba.iba_iot = sc->sc_iot; sa.sa_iba.iba_memt = sc->sc_memt; sa.sa_iba.iba_dmat = alphabus_dma_get_tag(sc->sc_parent_dmat, ALPHA_BUS_ISA); sa.sa_iba.iba_ic = &sc->sc_isa_chipset; config_found(&sc->sc_dv, &sa.sa_iba, sioprint); } int sioprint(aux, pnp) void *aux; const char *pnp; { register union sio_attach_args *sa = aux; if (pnp) printf("%s at %s", sa->sa_name, pnp); return (UNCONF); } void sio_isa_attach_hook(parent, self, iba) struct device *parent, *self; struct isabus_attach_args *iba; { /* Nothing to do. */ } void sio_eisa_attach_hook(parent, self, eba) struct device *parent, *self; struct eisabus_attach_args *eba; { /* Nothing to do. */ } int sio_eisa_maxslots(v) void *v; { return 16; /* as good a number as any. only 8, maybe? */ } int sio_eisa_intr_map(v, irq, ihp) void *v; u_int irq; eisa_intr_handle_t *ihp; { #define ICU_LEN 16 /* number of ISA IRQs (XXX) */ if (irq >= ICU_LEN) { printf("sio_eisa_intr_map: bad IRQ %d\n", irq); *ihp = -1; return 1; } if (irq == 2) { printf("sio_eisa_intr_map: changed IRQ 2 to IRQ 9\n"); irq = 9; } *ihp = irq; return 0; }