com_vrip.c revision 1.7
1 /* $NetBSD: com_vrip.c,v 1.7 2001/04/30 11:42:19 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/device.h> 40 #include <sys/reboot.h> 41 42 #include <sys/termios.h> 43 44 #include <machine/intr.h> 45 #include <machine/bus.h> 46 47 #include <machine/platid.h> 48 #include <machine/platid_mask.h> 49 #include <machine/config_hook.h> 50 51 #include <hpcmips/vr/vr.h> 52 #include <hpcmips/vr/vripvar.h> 53 #include <hpcmips/vr/cmureg.h> 54 #include <hpcmips/vr/siureg.h> 55 56 #include <dev/ic/comvar.h> 57 #include <dev/ic/comreg.h> 58 59 #include "opt_vr41xx.h" 60 #include <hpcmips/vr/vrgiuvar.h> 61 #include <hpcmips/vr/com_vripvar.h> 62 63 #include "locators.h" 64 65 #define COMVRIPDEBUG 66 #ifdef COMVRIPDEBUG 67 int com_vrip_debug = 0; 68 #define DPRINTF(arg) if (com_vrip_debug) printf arg; 69 #define VPRINTF(arg) if (com_vrip_debug || bootverbose) printf arg; 70 #else 71 #define DPRINTF(arg) 72 #define VPRINTF(arg) if (bootverbose) printf arg; 73 #endif 74 75 struct com_vrip_softc { 76 struct com_softc sc_com; 77 int sc_pwctl; 78 }; 79 80 static int com_vrip_probe __P((struct device *, struct cfdata *, void *)); 81 static void com_vrip_attach __P((struct device *, struct device *, void *)); 82 static int com_vrip_common_probe __P((bus_space_tag_t iot, int iobase)); 83 int find_comenableport_from_cfdata __P((int *)); 84 85 void vrcmu_init __P((void)); 86 void vrcmu_supply __P((int)); 87 void vrcmu_mask __P((int)); 88 89 struct cfattach com_vrip_ca = { 90 sizeof(struct com_vrip_softc), com_vrip_probe, com_vrip_attach 91 }; 92 93 /* For serial console */ 94 extern struct cfdata cfdata[]; 95 int 96 find_comenableport_from_cfdata(int *port) 97 { 98 platid_mask_t mask; 99 struct cfdata *cf; 100 int id; 101 102 printf ("COM enable port: "); 103 for (cf = cfdata; cf->cf_driver; cf++) { 104 if (strcmp(cf->cf_driver->cd_name, "pwctl")) 105 continue; 106 mask = PLATID_DEREF(cf->cf_loc[HPCIOIFCF_PLATFORM]); 107 id = cf->cf_loc[HPCIOIFCF_ID]; 108 if (platid_match(&platid, &mask) && 109 id == CONFIG_HOOK_POWERCONTROL_COM0) 110 goto found; 111 } 112 *port = -1; 113 printf ("not found\n"); 114 return (0); 115 found: 116 *port = cf->cf_loc[HPCIOIFCF_PORT]; 117 printf ("#%d\n", *port); 118 119 return (1); 120 } 121 122 int 123 com_vrip_cndb_attach(iot, iobase, rate, frequency, cflag, kgdb) 124 bus_space_tag_t iot; 125 int iobase; 126 int rate, frequency; 127 tcflag_t cflag; 128 int kgdb; 129 { 130 int port; 131 /* Platform dependent setting */ 132 __vrcmu_supply(CMUMSKSSIU | CMUMSKSIU, 1); 133 if (find_comenableport_from_cfdata(&port)) 134 __vrgiu_out(port, 1); 135 136 if (!com_vrip_common_probe(iot, iobase)) 137 return (EIO); /* I can't find appropriate error number. */ 138 #ifdef KGDB 139 if (kgdb) 140 return (com_kgdb_attach(iot, iobase, rate, frequency, cflag)); 141 else 142 #endif 143 return (comcnattach(iot, iobase, rate, frequency, cflag)); 144 } 145 146 static int 147 com_vrip_common_probe(iot, iobase) 148 bus_space_tag_t iot; 149 int iobase; 150 { 151 bus_space_handle_t ioh; 152 int rv; 153 154 if (bus_space_map(iot, iobase, 1, 0, &ioh)) { 155 printf(": can't map i/o space\n"); 156 return 0; 157 } 158 rv = comprobe1(iot, ioh); 159 bus_space_unmap(iot, ioh, 1); 160 return (rv); 161 } 162 163 static int 164 com_vrip_probe(parent, cf, aux) 165 struct device *parent; 166 struct cfdata *cf; 167 void *aux; 168 { 169 struct vrip_attach_args *va = aux; 170 bus_space_tag_t iot = va->va_iot; 171 int rv; 172 173 DPRINTF(("==com_vrip_probe")); 174 175 if (va->va_addr == VRIPCF_ADDR_DEFAULT || 176 va->va_intr == VRIPCF_INTR_DEFAULT) { 177 printf(": need addr and intr.\n"); 178 return (0); 179 } 180 181 if (!va->va_cf || !va->va_cf->cf_clock) 182 return 0; /* not yet CMU attached. Try again later. */ 183 184 va->va_cf->cf_clock(va->va_cc, CMUMSKSSIU | CMUMSKSIU, 1); 185 186 if (com_is_console(iot, va->va_addr, 0)) { 187 /* 188 * We have alredy probed. 189 */ 190 rv = 1; 191 } else { 192 rv = com_vrip_common_probe(iot, va->va_addr); 193 } 194 195 DPRINTF((rv ? ": found COM ports\n" : ": can't probe COM device\n")); 196 197 if (rv) { 198 va->va_size = COM_NPORTS; 199 } 200 return (rv); 201 } 202 203 204 static void 205 com_vrip_attach(parent, self, aux) 206 struct device *parent, *self; 207 void *aux; 208 { 209 struct com_vrip_softc *vsc = (void *) self; 210 struct com_softc *sc = &vsc->sc_com; 211 struct vrip_attach_args *va = aux; 212 213 bus_space_tag_t iot = va->va_iot; 214 bus_space_handle_t ioh; 215 216 vsc->sc_pwctl = sc->sc_dev.dv_cfdata->cf_loc[VRIPCF_PWCTL]; 217 218 DPRINTF(("==com_vrip_attach")); 219 220 if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) { 221 printf(": can't map bus space\n"); 222 return; 223 } 224 sc->sc_iobase = va->va_addr; 225 sc->sc_iot = iot; 226 sc->sc_ioh = ioh; 227 228 sc->enable = NULL; /* XXX: CMU control */ 229 sc->disable = NULL; 230 231 sc->sc_frequency = VRCOM_FREQ; 232 /* Power management */ 233 va->va_cf->cf_clock(va->va_cc, CMUMSKSSIU | CMUMSKSIU, 1); 234 /* 235 va->va_gf->gf_portwrite(va->va_gc, GIUPORT_COM, 1); 236 */ 237 /* XXX, locale 'ID' must be need */ 238 config_hook_call(CONFIG_HOOK_POWERCONTROL, vsc->sc_pwctl, (void*)1); 239 240 DPRINTF(("Try to attach com.\n")); 241 com_attach_subr(sc); 242 243 DPRINTF(("Establish intr")); 244 vrip_intr_establish(va->va_vc, va->va_intr, IPL_TTY, comintr, self); 245 246 DPRINTF((":return()")); 247 VPRINTF(("%s: pwctl %d\n", vsc->sc_com.sc_dev.dv_xname, vsc->sc_pwctl)); 248 } 249
Indexes created Tue Sep 30 20:09:53 GMT 2025