1 /* $OpenBSD: com_gsc.c,v 1.22 2022/03/13 08:04:38 mpi Exp $ */ 2 3 /* 4 * Copyright (c) 1998-2003 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/device.h> 32 #include <sys/tty.h> 33 34 #include <machine/bus.h> 35 #include <machine/intr.h> 36 #include <machine/iomod.h> 37 #include <machine/autoconf.h> 38 39 #include <dev/ic/comreg.h> 40 #include <dev/ic/comvar.h> 41 42 #include <hppa/dev/cpudevs.h> 43 #include <hppa/gsc/gscbusvar.h> 44 45 #define COM_GSC_FREQ 7372800 46 47 struct com_gsc_regs { 48 u_int8_t reset; 49 }; 50 51 int com_gsc_probe(struct device *, void *, void *); 52 void com_gsc_attach(struct device *, struct device *, void *); 53 54 const struct cfattach com_gsc_ca = { 55 sizeof(struct com_softc), com_gsc_probe, com_gsc_attach 56 }; 57 58 int 59 com_gsc_probe(parent, match, aux) 60 struct device *parent; 61 void *match, *aux; 62 { 63 struct gsc_attach_args *ga = aux; 64 65 if (ga->ga_type.iodc_type != HPPA_TYPE_FIO || 66 (ga->ga_type.iodc_sv_model != HPPA_FIO_GRS232 && 67 ga->ga_type.iodc_sv_model != HPPA_FIO_RS232 && 68 ga->ga_type.iodc_sv_model != HPPA_FIO_GRJ16)) 69 return (0); 70 71 return (1); 72 /* HOZER comprobe1(ga->ga_iot, ga->ga_hpa + IOMOD_DEVOFFSET); */ 73 } 74 75 void 76 com_gsc_attach(parent, self, aux) 77 struct device *parent, *self; 78 void *aux; 79 { 80 struct com_softc *sc = (void *)self; 81 struct gsc_attach_args *ga = aux; 82 83 sc->sc_iot = ga->ga_iot; 84 sc->sc_iobase = (bus_addr_t)ga->ga_hpa; 85 if (ga->ga_type.iodc_sv_model != HPPA_FIO_GRJ16) 86 sc->sc_iobase += IOMOD_DEVOFFSET; 87 88 if (bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS, 89 0, &sc->sc_ioh)) { 90 printf(": cannot map io space\n"); 91 return; 92 } 93 94 if (PAGE0->mem_cons.pz_class == PCL_DUPLEX && 95 PAGE0->mem_cons.pz_hpa == ga->ga_hpa) { 96 bus_space_unmap(sc->sc_iot, sc->sc_ioh, COM_NPORTS); 97 comcnattach(sc->sc_iot, sc->sc_iobase, comdefaultrate, 98 COM_GSC_FREQ, comconscflag); 99 } 100 101 sc->sc_frequency = COM_GSC_FREQ; 102 com_attach_subr(sc); 103 104 sc->sc_ih = gsc_intr_establish((struct gsc_softc *)parent, 105 ga->ga_irq, IPL_TTY, comintr, sc, sc->sc_dev.dv_xname); 106 } 107