/* $NetBSD: fdc_isa.c,v 1.20 2015/04/13 16:33:24 riastradh Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Don Ahn. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)fd.c 7.4 (Berkeley) 5/25/91 */ #include __KERNEL_RCSID(0, "$NetBSD: fdc_isa.c,v 1.20 2015/04/13 16:33:24 riastradh Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include static int fdc_isa_probe(device_t, cfdata_t, void *); static void fdc_isa_attach(device_t, device_t, void *); static int fdc_isa_detach(device_t, int); struct fdc_isa_softc { struct fdc_softc sc_fdc; /* base fdc device */ bus_space_handle_t sc_baseioh; /* base I/O handle */ }; CFATTACH_DECL2_NEW(fdc_isa, sizeof(struct fdc_isa_softc), fdc_isa_probe, fdc_isa_attach, fdc_isa_detach, NULL, NULL, fdc_childdet); #ifdef NEWCONFIG void fdc_isa_forceintr(void *); #endif static int fdc_isa_probe(device_t parent, cfdata_t match, void *aux) { struct isa_attach_args *ia = aux; bus_space_tag_t iot; bus_space_handle_t ioh, ctl_ioh, base_ioh; int rv, iobase; iot = ia->ia_iot; rv = 0; if (ia->ia_nio < 1) return (0); if (ia->ia_nirq < 1) return (0); if (ia->ia_ndrq < 1) return (0); if (ISA_DIRECT_CONFIG(ia)) return (0); /* Disallow wildcarded I/O addresses. */ if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) return (0); /* Don't allow wildcarded IRQ/DRQ. */ if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) return (0); if (ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ) return (0); /* Map the I/O space. */ iobase = ia->ia_io[0].ir_addr; if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) return (0); if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { bus_space_unmap(iot, base_ioh, 6); return (0); } if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { bus_space_unmap(iot, base_ioh, 6); return (0); } /* Not needed for the rest of the probe. */ bus_space_unmap(iot, ctl_ioh, 1); /* reset */ bus_space_write_1(iot, ioh, fdout, 0); delay(100); bus_space_write_1(iot, ioh, fdout, FDO_FRST); /* see if it can handle a command */ if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) goto out; out_fdc(iot, ioh, 0xdf); out_fdc(iot, ioh, 2); rv = 1; ia->ia_nio = 1; ia->ia_io[0].ir_size = FDC_NPORT; ia->ia_nirq = 1; ia->ia_ndrq = 1; ia->ia_niomem = 0; out: bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); return (rv); } static int fdc_isa_detach(device_t self, int flags) { int rc; struct fdc_isa_softc *isc = device_private(self); struct fdc_softc *fdc = &isc->sc_fdc; if ((rc = fdcdetach(self, flags)) != 0) return rc; isa_intr_disestablish(fdc->sc_ic, fdc->sc_ih); bus_space_unmap(fdc->sc_iot, fdc->sc_fdctlioh, 1); bus_space_unmap(fdc->sc_iot, isc->sc_baseioh, 6 /* FDC_NPORT */); return 0; } static void fdc_isa_attach(device_t parent, device_t self, void *aux) { struct fdc_isa_softc *isc = device_private(self); struct fdc_softc *fdc = &isc->sc_fdc; struct isa_attach_args *ia = aux; aprint_naive("\n"); aprint_normal("\n"); fdc->sc_dev = self; fdc->sc_iot = ia->ia_iot; fdc->sc_ic = ia->ia_ic; fdc->sc_drq = ia->ia_drq[0].ir_drq; if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { aprint_normal_dev(fdc->sc_dev, "unable to map I/O space\n"); return; } if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, &fdc->sc_ioh)) { aprint_normal_dev(fdc->sc_dev, "unable to subregion I/O space\n"); return; } if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, &fdc->sc_fdctlioh)) { aprint_normal_dev(fdc->sc_dev, "unable to map CTL I/O space\n"); return; } fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, IST_EDGE, IPL_BIO, fdcintr, fdc); fdcattach(fdc); }