1 /* $NetBSD: com_ofisa.c,v 1.7 2002/10/02 16:34:27 thorpej Exp $ */ 2 3 /* 4 * Copyright 1997, 1998 5 * Digital Equipment Corporation. All rights reserved. 6 * 7 * This software is furnished under license and may be used and 8 * copied only in accordance with the following terms and conditions. 9 * Subject to these conditions, you may download, copy, install, 10 * use, modify and distribute this software in source and/or binary 11 * form. No title or ownership is transferred hereby. 12 * 13 * 1) Any source code used, modified or distributed must reproduce 14 * and retain this copyright notice and list of conditions as 15 * they appear in the source file. 16 * 17 * 2) No right is granted to use any trade name, trademark, or logo of 18 * Digital Equipment Corporation. Neither the "Digital Equipment 19 * Corporation" name nor any trademark or logo of Digital Equipment 20 * Corporation may be used to endorse or promote products derived 21 * from this software without the prior written permission of 22 * Digital Equipment Corporation. 23 * 24 * 3) This software is provided "AS-IS" and any express or implied 25 * warranties, including but not limited to, any implied warranties 26 * of merchantability, fitness for a particular purpose, or 27 * non-infringement are disclaimed. In no event shall DIGITAL be 28 * liable for any damages whatsoever, and in particular, DIGITAL 29 * shall not be liable for special, indirect, consequential, or 30 * incidental damages or damages for lost profits, loss of 31 * revenue or loss of use, whether such damages arise in contract, 32 * negligence, tort, under statute, in equity, at law or otherwise, 33 * even if advised of the possibility of such damage. 34 */ 35 36 /* 37 * OFW Attachment for 'com' serial driver 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: com_ofisa.c,v 1.7 2002/10/02 16:34:27 thorpej Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/device.h> 45 #include <sys/systm.h> 46 #include <sys/tty.h> 47 48 #include <machine/intr.h> 49 #include <machine/bus.h> 50 51 #include <dev/ofw/openfirm.h> 52 #include <dev/isa/isavar.h> 53 #include <dev/ofisa/ofisavar.h> 54 55 #include <dev/ic/comreg.h> 56 #include <dev/ic/comvar.h> 57 58 struct com_ofisa_softc { 59 struct com_softc sc_com; /* real "com" softc */ 60 61 /* OFW ISA-specific goo. */ 62 void *sc_ih; /* interrupt handler */ 63 }; 64 65 int com_ofisa_probe __P((struct device *, struct cfdata *, void *)); 66 void com_ofisa_attach __P((struct device *, struct device *, void *)); 67 68 CFATTACH_DECL(com_ofisa, sizeof(struct com_ofisa_softc), 69 com_ofisa_probe, com_ofisa_attach, NULL, NULL); 70 71 int 72 com_ofisa_probe(parent, cf, aux) 73 struct device *parent; 74 struct cfdata *cf; 75 void *aux; 76 { 77 struct ofisa_attach_args *aa = aux; 78 static const char *const compatible_strings[] = { "pnpPNP,501", NULL }; 79 int rv = 0; 80 81 if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1) 82 rv = 5; 83 #ifdef _COM_OFISA_MD_MATCH 84 if (!rv) 85 rv = com_ofisa_md_match(parent, cf, aux); 86 #endif 87 return (rv); 88 } 89 90 void 91 com_ofisa_attach(parent, self, aux) 92 struct device *parent, *self; 93 void *aux; 94 { 95 struct com_ofisa_softc *osc = (void *)self; 96 struct com_softc *sc = &osc->sc_com; 97 struct ofisa_attach_args *aa = aux; 98 struct ofisa_reg_desc reg; 99 struct ofisa_intr_desc intr; 100 int freq; 101 char freqbuf[4]; 102 int n; 103 104 /* 105 * We're living on an ofw. We have to ask the OFW what our 106 * registers and interrupts properties look like. 107 * 108 * We expect exactly one register region and one interrupt. 109 */ 110 111 n = ofisa_reg_get(aa->oba.oba_phandle, ®, 1); 112 #ifdef _COM_OFISA_MD_REG_FIXUP 113 n = com_ofisa_md_reg_fixup(parent, self, aux, ®, 1, n); 114 #endif 115 if (n != 1) { 116 printf(": error getting register data\n"); 117 return; 118 } 119 if (reg.len != 8) { 120 printf(": weird register size (%lu, expected 8)\n", 121 (unsigned long)reg.len); 122 return; 123 } 124 125 n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1); 126 #ifdef _COM_OFISA_MD_INTR_FIXUP 127 n = com_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n); 128 #endif 129 if (n != 1) { 130 printf(": error getting interrupt data\n"); 131 return; 132 } 133 134 if (OF_getproplen(aa->oba.oba_phandle, "clock-frequency") != 4 || 135 OF_getprop(aa->oba.oba_phandle, "clock-frequency", freqbuf, 136 sizeof freqbuf) != 4) 137 freq = COM_FREQ; 138 else 139 freq = of_decode_int(&freqbuf[0]); 140 141 sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt; 142 sc->sc_iobase = reg.addr; 143 sc->sc_frequency = freq; 144 145 if (!com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) && 146 bus_space_map(sc->sc_iot, sc->sc_iobase, reg.len, 0, 147 &sc->sc_ioh)) { 148 printf(": can't map register space\n"); 149 return; 150 } 151 152 osc->sc_ih = isa_intr_establish(aa->ic, intr.irq, intr.share, 153 IPL_SERIAL, comintr, sc); 154 155 com_attach_subr(sc); 156 157 #if 0 158 printf("%s: registers: ", sc->sc_dev.dv_xname); 159 ofisa_reg_print(®, 1); 160 printf("\n"); 161 printf("%s: interrupts: ", sc->sc_dev.dv_xname); 162 ofisa_intr_print(&intr, 1); 163 printf("\n"); 164 #endif 165 } 166