3835413bc1
configuration of devices logically attached to the ISA bus: * Change the isa_attach_args to have arrays of io, mem, irq, drq resources. * Add a "pnpnames" and a linked list of "pnpcompatnames" to the isa_attach_args. If either of these members are non-NULL, direct configuration of the bus is being performed. Add an ISA_DIRECT_CONFIG() macro to test for this. * Drivers are not allowed to modify the isa_attach_args unless direct configuration is not being performed and the probe fucntion is returning success. * Adapt device drivers -- currently, all driver probe routines return "no match" if ISA_DIRECT_CONFIG() evaluates to true.
110 lines
2.4 KiB
C
110 lines
2.4 KiB
C
/* $NetBSD: cy_isa.c,v 1.14 2002/01/07 21:47:04 thorpej Exp $ */
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/*
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* cy.c
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*
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* Driver for Cyclades Cyclom-8/16/32 multiport serial cards
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* (currently not tested with Cyclom-32 cards)
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*
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* Timo Rossi, 1996
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: cy_isa.c,v 1.14 2002/01/07 21:47:04 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isareg.h>
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#include <dev/ic/cd1400reg.h>
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#include <dev/ic/cyreg.h>
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#include <dev/ic/cyvar.h>
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int cy_isa_probe(struct device *, struct cfdata *, void *);
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void cy_isa_attach(struct device *, struct device *, void *);
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struct cfattach cy_isa_ca = {
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sizeof(struct cy_softc), cy_isa_probe, cy_isa_attach
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};
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int
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cy_isa_probe(struct device *parent, struct cfdata *match, void *aux)
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{
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struct isa_attach_args *ia = aux;
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struct cy_softc sc;
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int found;
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if (ia->ia_niomem < 1)
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return (0);
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if (ia->ia_nirq < 1)
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return (0);
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memcpy(&sc.sc_dev, match, sizeof(struct device));
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sc.sc_memt = ia->ia_memt;
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sc.sc_bustype = CY_BUSTYPE_ISA;
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/* Disallow wildcarded memory address. */
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if (ia->ia_iomem[0].ir_addr == ISACF_IOMEM_DEFAULT)
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return 0;
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if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT)
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return 0;
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if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, CY_MEMSIZE, 0,
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&sc.sc_bsh) != 0)
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return 0;
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found = cy_find(&sc);
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bus_space_unmap(ia->ia_memt, sc.sc_bsh, CY_MEMSIZE);
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if (found) {
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ia->ia_niomem = 1;
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ia->ia_iomem[0].ir_size = CY_MEMSIZE;
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ia->ia_nirq = 1;
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ia->ia_nio = 0;
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ia->ia_ndrq = 0;
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}
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return (found);
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}
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void
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cy_isa_attach(struct device *parent, struct device *self, void *aux)
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{
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struct cy_softc *sc = (void *) self;
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struct isa_attach_args *ia = aux;
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sc->sc_memt = ia->ia_memt;
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sc->sc_bustype = CY_BUSTYPE_ISA;
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printf(": Cyclades-Y multiport serial\n");
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if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, CY_MEMSIZE, 0,
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&sc->sc_bsh) != 0) {
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printf("%s: unable to map device registers\n",
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sc->sc_dev.dv_xname);
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return;
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}
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if (cy_find(sc) == 0) {
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printf("%s: unable to find CD1400s\n", sc->sc_dev.dv_xname);
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return;
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}
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cy_attach(sc);
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sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
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IST_EDGE, IPL_TTY, cy_intr, sc);
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if (sc->sc_ih == NULL)
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printf("%s: unable to establish interrupt",
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sc->sc_dev.dv_xname);
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}
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