com_vrip.c revision 1.1
1 /* $NetBSD: com_vrip.c,v 1.1 1999/09/16 12:23:31 takemura Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 SASAKI Takesi. All rights reserved. 5 * Copyright (c) 1999 PocketBSD Project. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the PocketBSD project 18 * and its contributors. 19 * 4. Neither the name of the project nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/ioctl.h> 40 #include <sys/termios.h> 41 #include <sys/select.h> 42 #include <sys/tty.h> 43 #include <sys/proc.h> 44 #include <sys/user.h> 45 #include <sys/conf.h> 46 #include <sys/file.h> 47 #include <sys/uio.h> 48 #include <sys/kernel.h> 49 #include <sys/syslog.h> 50 #include <sys/types.h> 51 #include <sys/device.h> 52 #include <sys/reboot.h> 53 54 #include <machine/intr.h> 55 #include <machine/bus.h> 56 /* For serial console */ 57 #include <machine/platid.h> 58 #include <machine/platid_mask.h> 59 60 #include <hpcmips/vr/vr.h> 61 #include <hpcmips/vr/vripvar.h> 62 #include <hpcmips/vr/cmureg.h> 63 #include <hpcmips/vr/siureg.h> 64 65 #include <dev/ic/comvar.h> 66 #include <dev/ic/comreg.h> 67 68 #include <hpcmips/vr/com_vripvar.h> 69 70 #include "locators.h" 71 72 #ifdef COMVRIPDEBUG 73 int com_vrip_debug = 0; 74 #define DPRINTF(arg) if (com_vrip_debug) printf arg; 75 #else 76 #define DPRINTF(arg) 77 #endif 78 79 struct com_vrip_softc { 80 struct com_softc sc_com; 81 }; 82 83 static int com_vrip_probe __P((struct device *, struct cfdata *, void *)); 84 static void com_vrip_attach __P((struct device *, struct device *, void *)); 85 static int com_vrip_common_probe __P((bus_space_tag_t iot, int iobase)); 86 int find_comenableport_from_cfdata __P((int *)); 87 88 void vrcmu_init __P((void)); 89 void vrcmu_supply __P((int)); 90 void vrcmu_mask __P((int)); 91 92 struct cfattach com_vrip_ca = { 93 sizeof(struct com_vrip_softc), com_vrip_probe, com_vrip_attach 94 }; 95 96 /* For serial console */ 97 extern struct cfdata cfdata[]; 98 int 99 find_comenableport_from_cfdata(int *port) 100 { 101 platid_mask_t mask; 102 struct cfdata *cf; 103 printf ("COM enable port: "); 104 for (cf = cfdata; cf->cf_driver; cf++) { 105 if (strcmp(cf->cf_driver->cd_name, "gpbus")) 106 continue; 107 mask = PLATID_DEREF(cf->cf_loc[GPBUSIFCF_PLATFORM]); 108 if (platid_match(&platid, &mask)) 109 goto found; 110 } 111 *port = -1; 112 printf ("not found\n"); 113 return 1; 114 found: 115 *port = cf->cf_loc[GPBUSIFCF_COMCTRL]; 116 printf ("#%d\n", *port); 117 118 return *port == GPBUSIFCF_COMCTRL_DEFAULT; 119 } 120 121 int 122 com_vrip_cnattach(iot, iobase, rate, frequency, cflag) 123 bus_space_tag_t iot; 124 int iobase; 125 int rate, frequency; 126 tcflag_t cflag; 127 { 128 int port; 129 /* Platform dependent setting */ 130 __vrcmu_supply(CMUMSKSSIU | CMUMSKSIU, 1); 131 if (find_comenableport_from_cfdata(&port) == 0) 132 __vrgiu_out(port, 1); 133 134 if (!com_vrip_common_probe(iot, iobase)) 135 return (EIO); /* I can't find appropriate error number. */ 136 return (comcnattach(iot, iobase, rate, frequency, cflag)); 137 } 138 139 static int 140 com_vrip_common_probe(iot, iobase) 141 bus_space_tag_t iot; 142 int iobase; 143 { 144 bus_space_handle_t ioh; 145 int rv; 146 147 if (bus_space_map(iot, iobase, 1, 0, &ioh)) { 148 printf(": can't map i/o space\n"); 149 return 0; 150 } 151 rv = comprobe1(iot, ioh); 152 bus_space_unmap(iot, ioh, 1); 153 return (rv); 154 } 155 156 static int 157 com_vrip_probe(parent, cf, aux) 158 struct device *parent; 159 struct cfdata *cf; 160 void *aux; 161 { 162 struct vrip_attach_args *va = aux; 163 bus_space_tag_t iot = va->va_iot; 164 int rv; 165 166 DPRINTF(("==com_vrip_probe")); 167 168 if (va->va_addr == VRIPCF_ADDR_DEFAULT || 169 va->va_intr == VRIPCF_INTR_DEFAULT) { 170 printf(": need addr and intr.\n"); 171 return (0); 172 } 173 174 if (!va->va_cf || !va->va_cf->cf_clock) 175 return 0; /* not yet CMU attached. Try again later. */ 176 177 va->va_cf->cf_clock(va->va_cc, CMUMSKSSIU | CMUMSKSIU, 1); 178 179 if (com_is_console(iot, va->va_addr, 0)) { 180 /* 181 * We have alredy probed. 182 */ 183 rv = 1; 184 } else { 185 rv = com_vrip_common_probe(iot, va->va_addr); 186 } 187 188 DPRINTF((rv ? ": found COM ports\n" : ": can't probe COM device\n")); 189 190 if (rv) { 191 va->va_size = COM_NPORTS; 192 } 193 return (rv); 194 } 195 196 197 static void 198 com_vrip_attach(parent, self, aux) 199 struct device *parent, *self; 200 void *aux; 201 { 202 struct com_vrip_softc *vsc = (void *) self; 203 struct com_softc *sc = &vsc->sc_com; 204 struct vrip_attach_args *va = aux; 205 206 bus_space_tag_t iot = va->va_iot; 207 bus_space_handle_t ioh; 208 209 DPRINTF(("==com_vrip_attach")); 210 211 if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) { 212 printf(": can't map bus space\n"); 213 return; 214 } 215 sc->sc_iobase = va->va_addr; 216 sc->sc_iot = iot; 217 sc->sc_ioh = ioh; 218 219 sc->enable = NULL; /* XXX: CMU control */ 220 sc->disable = NULL; 221 222 sc->sc_frequency = VRCOM_FREQ; 223 /* Power management */ 224 va->va_cf->cf_clock(va->va_cc, CMUMSKSSIU | CMUMSKSIU, 1); 225 va->va_gf->gf_portwrite_8(va->va_gc, GIUPORT_COM, 1); 226 227 DPRINTF(("Try to attach com.\n")); 228 com_attach_subr(sc); 229 230 DPRINTF(("Establish intr")); 231 vrip_intr_establish(va->va_vc, va->va_intr, IPL_TTY, comintr, self); 232 233 DPRINTF((":return()")); 234 } 235
Indexes created Tue Sep 30 20:09:53 GMT 2025