1 /* $NetBSD: com_ofisa.c,v 1.15 2012/10/27 17:18:27 chs 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 1.15 2012/10/27 17:18:27 chs 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 <sys/intr.h> 49 #include <sys/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(device_t, cfdata_t , void *); 66 void com_ofisa_attach(device_t, device_t, void *); 67 68 CFATTACH_DECL_NEW(com_ofisa, sizeof(struct com_ofisa_softc), 69 com_ofisa_probe, com_ofisa_attach, NULL, NULL); 70 71 int 72 com_ofisa_probe(device_t parent, cfdata_t cf, void *aux) 73 { 74 struct ofisa_attach_args *aa = aux; 75 static const char *const compatible_strings[] = { "pnpPNP,501", NULL }; 76 int rv = 0; 77 78 if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1) 79 rv = 5; 80 #ifdef _COM_OFISA_MD_MATCH 81 if (!rv) 82 rv = com_ofisa_md_match(parent, cf, aux); 83 #endif 84 return (rv); 85 } 86 87 void 88 com_ofisa_attach(device_t parent, device_t self, void *aux) 89 { 90 struct com_ofisa_softc *osc = device_private(self); 91 struct com_softc *sc = &osc->sc_com; 92 struct ofisa_attach_args *aa = aux; 93 struct ofisa_reg_desc reg; 94 struct ofisa_intr_desc intr; 95 bus_space_handle_t ioh; 96 bus_space_tag_t iot; 97 bus_addr_t iobase; 98 int freq; 99 char freqbuf[4]; 100 int n; 101 102 sc->sc_dev = self; 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 aprint_error(": error getting register data\n"); 117 return; 118 } 119 if (reg.len != 8) { 120 aprint_error(": 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 aprint_error(": 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 iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt; 142 iobase = reg.addr; 143 sc->sc_frequency = freq; 144 145 if (!com_is_console(iot, iobase, &ioh) && 146 bus_space_map(iot, iobase, reg.len, 0, &ioh)) { 147 aprint_error(": can't map register space\n"); 148 return; 149 } 150 COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); 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: ", device_xname(sc->sc_dev)); 159 ofisa_reg_print(®, 1); 160 printf("\n"); 161 printf("%s: interrupts: ", device_xname(sc->sc_dev)); 162 ofisa_intr_print(&intr, 1); 163 printf("\n"); 164 #endif 165 } 166